首页 > 最新文献

Industrial Crops and Products最新文献

英文 中文
Microbial community succession patterns and metabolite profiles in cigar tobacco during different mildew stages 雪茄烟不同霉变阶段的微生物群落演替模式和代谢物特征
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120005
Guanglong Wu , Mingzhu Zhang , Ping Han , Dongfeng Guo , Yaqi Shi , Dongdong Mu , Xingjiang Li , Xuefeng Wu
Mildew in cigar tobacco leaves (CTLs) degrades both quality and market value. This research systematically examines dynamic changes in key metabolic compounds and microbial community succession throughout the mildew process, categorized into three stages: un-mildew (d0), early-mildew (d4 and d8), and late-mildew (d12 and d16). As mildew progresses, carbohydrates decrease, nitrogen metabolism is hindered, the carbon-nitrogen ratio (C/N) declines, and pH rises, making the tobacco weakly alkaline. The total amount of volatile flavor compounds (VFCs) increases, with the proportion of nitrogen-containing compounds such as nicotine rising, while neophytadiene, ketones, and alcohols decrease, leading to a disruption in the coordination of various aroma substances. Microbial diversity declines, with shifts in populations of Staphylococcus, Pseudomonas, Aspergillus, and Sampaiozyma. Six fungal and five bacterial genera are the characteristic dominate microorganisms at different stages. Co-occurrence network analysis shows that complexity decreases and stability declines, while microbial diversity peaks at the early-mold stage and is severely compromised at the late-mold stage in terms of stability and functional diversity. Two-way Orthogonal Partial Least Squares (O2PLS) identified 12 fungal and 3 bacterial genera as key drivers of metabolic changes. Partial Least Squares Structural Equation Modeling (PLS-SEM) emphasized the role of fungi in CTL degradation and the impact of C/N ratio on fungal metabolism. This study, for the first time, elucidates the complex relationship between microbial succession and metabolite compounds during mildew process, providing a reference for dynamic monitoring of fermented tobacco quality.
雪茄烟叶(CTL)霉变会降低质量和市场价值。这项研究系统地考察了整个霉变过程中关键代谢化合物和微生物群落演替的动态变化,分为三个阶段:未霉变(d0)、早霉变(d4 和 d8)和晚霉变(d12 和 d16)。随着霉变的发展,碳水化合物减少,氮代谢受阻,碳氮比(C/N)下降,pH 值上升,烟草呈弱碱性。挥发性香味化合物(VFCs)的总量增加,尼古丁等含氮化合物的比例上升,而新戊二烯、酮类和醇类减少,导致各种香味物质的协调紊乱。微生物多样性下降,葡萄球菌、假单胞菌、曲霉菌和桑巴菌的数量发生变化。六个真菌属和五个细菌属是不同阶段的特征性优势微生物。共现网络分析显示,复杂性降低,稳定性下降,而微生物多样性在早期霉菌阶段达到顶峰,在晚期霉菌阶段稳定性和功能多样性严重受损。双向正交偏最小二乘法(O2PLS)确定了 12 个真菌属和 3 个细菌属是新陈代谢变化的关键驱动因素。偏最小二乘法结构方程建模(PLS-SEM)强调了真菌在 CTL 降解中的作用以及 C/N 比对真菌新陈代谢的影响。该研究首次阐明了霉变过程中微生物演替与代谢物化合物之间的复杂关系,为动态监测发酵烟叶质量提供了参考。
{"title":"Microbial community succession patterns and metabolite profiles in cigar tobacco during different mildew stages","authors":"Guanglong Wu ,&nbsp;Mingzhu Zhang ,&nbsp;Ping Han ,&nbsp;Dongfeng Guo ,&nbsp;Yaqi Shi ,&nbsp;Dongdong Mu ,&nbsp;Xingjiang Li ,&nbsp;Xuefeng Wu","doi":"10.1016/j.indcrop.2024.120005","DOIUrl":"10.1016/j.indcrop.2024.120005","url":null,"abstract":"<div><div>Mildew in cigar tobacco leaves (CTLs) degrades both quality and market value. This research systematically examines dynamic changes in key metabolic compounds and microbial community succession throughout the mildew process, categorized into three stages: un-mildew (d0), early-mildew (d4 and d8), and late-mildew (d12 and d16). As mildew progresses, carbohydrates decrease, nitrogen metabolism is hindered, the carbon-nitrogen ratio (C/N) declines, and pH rises, making the tobacco weakly alkaline. The total amount of volatile flavor compounds (VFCs) increases, with the proportion of nitrogen-containing compounds such as nicotine rising, while neophytadiene, ketones, and alcohols decrease, leading to a disruption in the coordination of various aroma substances. Microbial diversity declines, with shifts in populations of <em>Staphylococcus</em>, <em>Pseudomonas</em>, <em>Aspergillus</em>, and <em>Sampaiozyma</em>. Six fungal and five bacterial genera are the characteristic dominate microorganisms at different stages. Co-occurrence network analysis shows that complexity decreases and stability declines, while microbial diversity peaks at the early-mold stage and is severely compromised at the late-mold stage in terms of stability and functional diversity. Two-way Orthogonal Partial Least Squares (O2PLS) identified 12 fungal and 3 bacterial genera as key drivers of metabolic changes. Partial Least Squares Structural Equation Modeling (PLS-SEM) emphasized the role of fungi in CTL degradation and the impact of C/N ratio on fungal metabolism. This study, for the first time, elucidates the complex relationship between microbial succession and metabolite compounds during mildew process, providing a reference for dynamic monitoring of fermented tobacco quality.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 120005"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of highly stable and durable wood materials by modification of polyacrylamide (PAM)-glyoxal (GLY) 通过改性聚丙烯酰胺(PAM)-乙二醛(GLY)制造高稳定性和耐久性木质材料
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120033
Yuxin He , Guijun Xie , Xingwei Li , Qiaoguang Li , Wanju Li
Facile and efficient protection strategies to improve wood dimensional stability and resistance to mold and termite are urgently needed in the architectural constructional materials market. In this study, polyacrylamide (PAM)-glyoxal (GLY) system impregnation and thermal curing were used to modify Scots pine wood. The results showed that the average anti-swelling efficacy (ASE) of 160-AGE, 160-AGEP, and 200-AGE modified wood was 36.09 %, 26.67 % and 19.00 % in volume, respectively. Compared with the untreated wood, the modified wood exhibited better mold resistance. Furthermore, the modified wood samples show higher termite mortality and lower mass losses, indicating good termite resistance. Among them, the anti-mold efficacy in 200-AGE was 91.10 %, and the termite resistance rating in 160-AGE was 9.2. The modulus of elasticity (MOE) of the modified wood sample was 16–25 % higher than that of the untreated wood. Obtained by infrared spectrum and electron microscope analysis, the acrylamide polymer penetrates into the wood cell cavities and forms polyacrylamide, which is crosslinked to wood cell wall -OH by glyoxal. This study can prove that the polyacrylamide-glyoxal system modifier has great potential as a modifier to improve the mold resistance and dimensional stability of wood.
建筑材料市场迫切需要方便有效的保护策略,以提高木材的尺寸稳定性以及抗霉菌和白蚁的能力。本研究采用聚丙烯酰胺(PAM)-乙二醛(GLY)系统浸渍和热固化技术对苏格兰松木进行改性。结果表明,160-AGE、160-AGEP 和 200-AGE 改性木材的平均体积抗膨胀功效(ASE)分别为 36.09%、26.67% 和 19.00%。与未经处理的木材相比,改性木材具有更好的防霉性能。此外,改性木材样品的白蚁死亡率较高,质量损失较小,表明其具有良好的抗白蚁能力。其中,200-AGE 的防霉效果为 91.10%,160-AGE 的抗白蚁等级为 9.2。改性木材样品的弹性模量(MOE)比未处理木材高出 16-25%。红外光谱和电子显微镜分析表明,丙烯酰胺聚合物渗入木材细胞腔内形成聚丙烯酰胺,并通过乙二醛与木材细胞壁的 -OH 交联。这项研究可以证明,聚丙烯酰胺-乙二醛体系改性剂作为一种改性剂,在提高木材的防霉性和尺寸稳定性方面具有很大的潜力。
{"title":"Fabrication of highly stable and durable wood materials by modification of polyacrylamide (PAM)-glyoxal (GLY)","authors":"Yuxin He ,&nbsp;Guijun Xie ,&nbsp;Xingwei Li ,&nbsp;Qiaoguang Li ,&nbsp;Wanju Li","doi":"10.1016/j.indcrop.2024.120033","DOIUrl":"10.1016/j.indcrop.2024.120033","url":null,"abstract":"<div><div>Facile and efficient protection strategies to improve wood dimensional stability and resistance to mold and termite are urgently needed in the architectural constructional materials market. In this study, polyacrylamide (PAM)-glyoxal (GLY) system impregnation and thermal curing were used to modify Scots pine wood. The results showed that the average anti-swelling efficacy (ASE) of 160-AGE, 160-AGEP, and 200-AGE modified wood was 36.09 %, 26.67 % and 19.00 % in volume, respectively. Compared with the untreated wood, the modified wood exhibited better mold resistance. Furthermore, the modified wood samples show higher termite mortality and lower mass losses, indicating good termite resistance. Among them, the anti-mold efficacy in 200-AGE was 91.10 %, and the termite resistance rating in 160-AGE was 9.2. The modulus of elasticity (MOE) of the modified wood sample was 16–25 % higher than that of the untreated wood. Obtained by infrared spectrum and electron microscope analysis, the acrylamide polymer penetrates into the wood cell cavities and forms polyacrylamide, which is crosslinked to wood cell wall -OH by glyoxal. This study can prove that the polyacrylamide-glyoxal system modifier has great potential as a modifier to improve the mold resistance and dimensional stability of wood.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 120033"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First chromosome-scale genome of Indian tea (Camellia assamica Masters; syn C. sinensis var assamica) cultivar TV 1 reveals its evolution and domestication of caffeine synthesis 印度茶(Camellia assamica Masters; syn C. sinensis var assamica)栽培品种 TV 1 的首个染色体级基因组揭示了其进化和咖啡因合成的驯化过程
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119992
Hukam C. Rawal , Sangeeta Borchetia , Megha Rohilla , Abhishek Mazumder , Madhurjya Gogoi , Pradeep Kumar Patel , R.Victor J. Ilango , Buddhadeb Das , Anirban Basu Mazumder , Tanoy Bandyopadhyay , P.Mohan Kumar , S. Soundararajan , Biswajit Bera , Pradosh Mahadani , Gargi Saha , Sudipta Mukherjee , Santanu Sabhapondit , Anoop Kumar Barooah , Tilak Raj Sharma , Nagendra Kumar Singh , Tapan Kumar Mondal
Botanically, there are two main types of tea i.e. China and Assam type, predominant in China and India, respectively. Different chromosome-level assemblies of China type tea genomes have been reported recently but none for Assam type. Thus, in the present study, genome assembly of most popular Assam type Indian tea cultivar, TV 1 was decoded at chromosome-scale and analyzed to understand the domestication, variations, and evolutionary differences between China and Assam type teas. Whole genome duplication (WGD) study has confirmed close collinearity and recent WGD events between Assam type teas from India (Camellia assamica) and China (C. sinensis var. assamica). Single copy gene-based study has confirmed divergence of TV 1 from China type tea (C. sinensis var. sinensis) approximately 5.5 MYA, and SNP-based analysis of 150 genotypes across the world supports their independent domestication. Moreover, 512 genes in TV 1 were found positively selected during domestication events between caffeine and non-caffeine groups. At 93 fusion genes per species per million years rate, 400 fusion genes were found with no shared recent fusion events between China and Assam type tea. Secondary metabolite profiling has yielded several metabolic compounds such as caffeine, theophylline, and catechins. All these resources were documented in Tea India Genome e-Resource (TIGeR; https://indianteagenome.in/).
在植物学上,有两种主要的茶叶类型,即中国型和阿萨姆型,分别在中国和印度占主导地位。最近有报道称,中国型茶叶基因组在染色体水平上进行了不同的组装,但阿萨姆型茶叶基因组组装尚无报道。因此,本研究对印度最受欢迎的阿萨姆型茶叶栽培品种 TV 1 的基因组进行了染色体解码和分析,以了解中国和阿萨姆型茶叶之间的驯化、变异和进化差异。全基因组复制(WGD)研究证实了印度阿萨姆型茶(Camellia assamica)和中国阿萨姆型茶(C. sinensis var.)基于单拷贝基因的研究证实了 TV 1 与中国茶叶(C. sinensis var.此外,TV 1 中的 512 个基因在咖啡因组和非咖啡因组之间的驯化过程中被正向选择。按照每百万年每个物种 93 个融合基因的速度计算,发现中国和阿萨姆型茶叶之间有 400 个融合基因,没有共同的近期融合事件。次生代谢物分析发现了多种代谢化合物,如咖啡因、茶碱和儿茶素。所有这些资源都记录在印度茶叶基因组电子资源(TIGeR; https://indianteagenome.in/)中。
{"title":"First chromosome-scale genome of Indian tea (Camellia assamica Masters; syn C. sinensis var assamica) cultivar TV 1 reveals its evolution and domestication of caffeine synthesis","authors":"Hukam C. Rawal ,&nbsp;Sangeeta Borchetia ,&nbsp;Megha Rohilla ,&nbsp;Abhishek Mazumder ,&nbsp;Madhurjya Gogoi ,&nbsp;Pradeep Kumar Patel ,&nbsp;R.Victor J. Ilango ,&nbsp;Buddhadeb Das ,&nbsp;Anirban Basu Mazumder ,&nbsp;Tanoy Bandyopadhyay ,&nbsp;P.Mohan Kumar ,&nbsp;S. Soundararajan ,&nbsp;Biswajit Bera ,&nbsp;Pradosh Mahadani ,&nbsp;Gargi Saha ,&nbsp;Sudipta Mukherjee ,&nbsp;Santanu Sabhapondit ,&nbsp;Anoop Kumar Barooah ,&nbsp;Tilak Raj Sharma ,&nbsp;Nagendra Kumar Singh ,&nbsp;Tapan Kumar Mondal","doi":"10.1016/j.indcrop.2024.119992","DOIUrl":"10.1016/j.indcrop.2024.119992","url":null,"abstract":"<div><div>Botanically, there are two main types of tea i.e. China and Assam type, predominant in China and India, respectively. Different chromosome-level assemblies of China type tea genomes have been reported recently but none for Assam type. Thus, in the present study, genome assembly of most popular Assam type Indian tea cultivar, TV 1 was decoded at chromosome-scale and analyzed to understand the domestication, variations, and evolutionary differences between China and Assam type teas. Whole genome duplication (WGD) study has confirmed close collinearity and recent WGD events between Assam type teas from India (<em>Camellia assamica</em>) and China (<em>C. sinensis</em> var. <em>assamica</em>). Single copy gene-based study has confirmed divergence of TV 1 from China type tea (<em>C. sinensis</em> var. <em>sinensis</em>) approximately 5.5 MYA, and SNP-based analysis of 150 genotypes across the world supports their independent domestication. Moreover, 512 genes in TV 1 were found positively selected during domestication events between caffeine and non-caffeine groups. At 93 fusion genes per species per million years rate, 400 fusion genes were found with no shared recent fusion events between China and Assam type tea. Secondary metabolite profiling has yielded several metabolic compounds such as caffeine, theophylline, and catechins. All these resources were documented in Tea India Genome e-Resource (TIGeR; <span><span>https://indianteagenome.in/</span><svg><path></path></svg></span>).</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119992"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of crop straw for edible and medicinal fungi cultivation: Assessment of lignocellulose preprocessing and spent substrate biofuel properties 农作物秸秆用于食用和药用真菌培养的研究:木质纤维素预处理和废基质生物燃料特性评估
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120004
Yi Yin , Binbin Chen , Shuai Xu , Jinchen Zuo , Yue Xu , Shaojun Xiong , Feng Chen
Pretreatment with white-rot fungi has advantages of low inputs of energy and chemicals for reducing the recalcitrance of woody biomass for cellulosic ethanol production. This study investigated the effects of substrates ranging from wood to wheat straw on edible and medicinal fungi production, lignocellulose degradation, cellulose saccharification and ethanolic fermentation of the produced hydrolysates. Shiitake cultivation resulted in the most substantial degradation of lignin and xylan. Reishi produced a selective degradation pattern in terms of preferential xylan removal. Oyster had poor performance in lignocellulose degradation. Shiitake and reishi had high reactivity of S-lignin. The strong recalcitrance of >10 % wheat straw addition for mushroom cultivation might be attributed to the low S:G ratio of the substrates. Compared with the substrate comprising a single hardwood, 10 % wheat straw addition optimised the integration process, resulting in a generally comparable fruiting body yield and higher lignocellulose degradation. The shiitake-based and reishi-based spent mushroom substrates (SMSs) contained ∼21 % glucan, which released 84.4 % and 33.5 % of potentially achievable glucose upon enzymatic saccharification, respectively. The SMS hydrolysates ensured ethanol yields corresponding to 78.0 %–83.2 % of the theoretical value in fermentation. The lignocellulose degradation–derived by-products following the fungal pretreatment showed a notable difference compared with thermochemical methods and might cause inhibitory effects on yeast. This study provides valuable insights into the cause of crop straws’s inhibition of white-rot fungi production and reveals the potential of fungal pretreatment as a biorefinery approach producing food and biofuel.
使用白腐真菌进行预处理具有能源和化学品投入低的优势,可减少用于纤维素乙醇生产的木质生物质的不稳定性。本研究调查了从木材到小麦秸秆等各种基质对食用和药用真菌生产、木质纤维素降解、纤维素糖化以及水解产物乙醇发酵的影响。香菇栽培对木质素和木聚糖的降解作用最大。灵芝产生了一种选择性降解模式,优先去除木聚糖。牡蛎在降解木质纤维素方面表现较差。香菇和灵芝对 S-木质素有较高的反应活性。在蘑菇栽培中添加 10% 的小麦秸秆会产生强烈的不稳定性,这可能是由于基质的 S:G 比率较低。与含有单一硬木的基质相比,添加 10% 的小麦秸秆可优化整合过程,使子实体产量基本相当,木质纤维素降解率更高。香菇基质和灵芝基质的废蘑菇基质(SMS)含有 21% 的葡聚糖,经酶糖化后分别释放出 84.4% 和 33.5% 的潜在葡萄糖。SMS 水解产物可确保乙醇产量达到发酵理论值的 78.0%-83.2% 。与热化学方法相比,真菌预处理后木质纤维素降解产生的副产品有明显差异,可能会对酵母产生抑制作用。这项研究对作物秸秆抑制白腐真菌产生的原因提供了有价值的见解,并揭示了真菌预处理作为一种生产食品和生物燃料的生物炼制方法的潜力。
{"title":"Investigation of crop straw for edible and medicinal fungi cultivation: Assessment of lignocellulose preprocessing and spent substrate biofuel properties","authors":"Yi Yin ,&nbsp;Binbin Chen ,&nbsp;Shuai Xu ,&nbsp;Jinchen Zuo ,&nbsp;Yue Xu ,&nbsp;Shaojun Xiong ,&nbsp;Feng Chen","doi":"10.1016/j.indcrop.2024.120004","DOIUrl":"10.1016/j.indcrop.2024.120004","url":null,"abstract":"<div><div>Pretreatment with white-rot fungi has advantages of low inputs of energy and chemicals for reducing the recalcitrance of woody biomass for cellulosic ethanol production. This study investigated the effects of substrates ranging from wood to wheat straw on edible and medicinal fungi production, lignocellulose degradation, cellulose saccharification and ethanolic fermentation of the produced hydrolysates. Shiitake cultivation resulted in the most substantial degradation of lignin and xylan. Reishi produced a selective degradation pattern in terms of preferential xylan removal. Oyster had poor performance in lignocellulose degradation. Shiitake and reishi had high reactivity of S-lignin. The strong recalcitrance of &gt;10 % wheat straw addition for mushroom cultivation might be attributed to the low S:G ratio of the substrates. Compared with the substrate comprising a single hardwood, 10 % wheat straw addition optimised the integration process, resulting in a generally comparable fruiting body yield and higher lignocellulose degradation. The shiitake-based and reishi-based spent mushroom substrates (SMSs) contained ∼21 % glucan, which released 84.4 % and 33.5 % of potentially achievable glucose upon enzymatic saccharification, respectively. The SMS hydrolysates ensured ethanol yields corresponding to 78.0 %–83.2 % of the theoretical value in fermentation. The lignocellulose degradation–derived by-products following the fungal pretreatment showed a notable difference compared with thermochemical methods and might cause inhibitory effects on yeast. This study provides valuable insights into the cause of crop straws’s inhibition of white-rot fungi production and reveals the potential of fungal pretreatment as a biorefinery approach producing food and biofuel.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"223 ","pages":"Article 120004"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel design of highly biocompatible and dual-network hydrogel films containing apple polyphenol and its potential application in functional package 含有苹果多酚的高生物相容性双网络水凝胶薄膜的新型设计及其在功能性包装中的潜在应用
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119971
Jie Liu , Youliang Cheng , Changqing Fang , Xin Zhang , Mengyao Li , Kun Xiang
Biocompatible hydrogel as environmentally friendly materials have been applied in food packaging, pharmaceuticals, and biosensors. However, single-function and relatively poor comprehensive performance for most of biocompatible hydrogel films seriously restricted its practical application in modern food packaging. In the light of these factors, novel biocompatible hydrogel films with highly antimicrobial activity and oxidation resistance were prepared by incorporating apple polyphenols (APP) into polyvinyl alcohol (PVA) and polyacrylamide (PAM) in this work. PAM formed a covalent crosslinked network due to the copolymerization of AM monomers. Furthermore, hydrogen bonds between the hydroxyl groups in APP and the hydroxyl groups in both PVA and PAM contributed to a dual interpenetrating network of PVA/PAM/APP, resulting in a hydrogel composite film with good elongation (301 %) and tensile strength (12.83 MPa). Moreover, the prepared PVA/PAM/APP hydrogel films exhibited excellent antimicrobial properties with antimicrobial diameters of 12 mm and 20 mm against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), respectively. Interestingly, the films also possessed good antioxidant and ultraviolet resistance properties. This dual-network hydrogel film addressed the problems of single function and poor comprehensive performance for traditional biocompatible hydrogel films. Therefore, as-prepared multifunctional and biocompatible hydrogel films in this work have great potential application in the food packaging filed.
生物相容性水凝胶作为一种环保材料,已被应用于食品包装、制药和生物传感器等领域。然而,大多数生物相容性水凝胶薄膜功能单一、综合性能较差,严重制约了其在现代食品包装中的实际应用。有鉴于此,本研究在聚乙烯醇(PVA)和聚丙烯酰胺(PAM)中加入苹果多酚(APP),制备出了具有高抗菌活性和抗氧化性的新型生物相容性水凝胶薄膜。由于 AM 单体的共聚作用,PAM 形成了共价交联网络。此外,APP 中的羟基与 PVA 和 PAM 中的羟基之间的氢键促成了 PVA/PAM/APP 的双重互穿网络,使水凝胶复合膜具有良好的伸长率(301%)和拉伸强度(12.83 兆帕)。此外,制备的 PVA/PAM/APP 水凝胶薄膜还具有优异的抗菌性能,对金黄色葡萄球菌(S. aureus)和大肠杆菌(E. coli)的抗菌直径分别为 12 毫米和 20 毫米。有趣的是,这些薄膜还具有良好的抗氧化和抗紫外线性能。这种双网络水凝胶薄膜解决了传统生物相容性水凝胶薄膜功能单一、综合性能差的问题。因此,本研究制备的多功能生物相容性水凝胶薄膜在食品包装领域具有巨大的应用潜力。
{"title":"Novel design of highly biocompatible and dual-network hydrogel films containing apple polyphenol and its potential application in functional package","authors":"Jie Liu ,&nbsp;Youliang Cheng ,&nbsp;Changqing Fang ,&nbsp;Xin Zhang ,&nbsp;Mengyao Li ,&nbsp;Kun Xiang","doi":"10.1016/j.indcrop.2024.119971","DOIUrl":"10.1016/j.indcrop.2024.119971","url":null,"abstract":"<div><div>Biocompatible hydrogel as environmentally friendly materials have been applied in food packaging, pharmaceuticals, and biosensors. However, single-function and relatively poor comprehensive performance for most of biocompatible hydrogel films seriously restricted its practical application in modern food packaging. In the light of these factors, novel biocompatible hydrogel films with highly antimicrobial activity and oxidation resistance were prepared by incorporating apple polyphenols (APP) into polyvinyl alcohol (PVA) and polyacrylamide (PAM) in this work. PAM formed a covalent crosslinked network due to the copolymerization of AM monomers. Furthermore, hydrogen bonds between the hydroxyl groups in APP and the hydroxyl groups in both PVA and PAM contributed to a dual interpenetrating network of PVA/PAM/APP, resulting in a hydrogel composite film with good elongation (301 %) and tensile strength (12.83 MPa). Moreover, the prepared PVA/PAM/APP hydrogel films exhibited excellent antimicrobial properties with antimicrobial diameters of 12 mm and 20 mm against Staphylococcus aureus (<em>S. aureus</em>) and Escherichia coli (<em>E. coli</em>), respectively. Interestingly, the films also possessed good antioxidant and ultraviolet resistance properties. This dual-network hydrogel film addressed the problems of single function and poor comprehensive performance for traditional biocompatible hydrogel films. Therefore, as-prepared multifunctional and biocompatible hydrogel films in this work have great potential application in the food packaging filed.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119971"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green preparation of carbon materials from biomass slag and steam as byproducts of power plants for efficient treatment of lead-containing wastewater 利用发电厂副产品生物质炉渣和蒸汽绿色制备碳材料,高效处理含铅废水
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120011
Yiping Luo , Yuqian Sun , Zhichen Zhao , Zhengyue Dai , Bin Jiang , Zhicheng Jiang , Xudong Liu , Dong Li , Fang Deng
Green preparation of high-performance and cost-effective carbon materials using biomass slag and steam, which were the byproducts of power plants, for efficient treatment of lead (Pb(II))-containing wastewater was investigated. The optimum carbon material CH500-800 (SBET=818.8 m2/g and Vt=0.46 cm3/g) was produced by one-step steam activation at 800 ℃ for 1 h under a 500 mL/min stream with a heating rate of 5 °C/min. The obtained CH500-800 greatly enhanced the efficiency of Pb(II) removal, achieving the maximum adsorption capacity of 191.1 mg/g. The removal of Pb(II) from wastewater was well described by the Pseudo-second-order, Elovich and Freundlich model, suggesting that it was predominantly governed by chemical adsorption and diffusion on heterogeneous surfaces. The adsorption process demonstrated a synergistic mechanism involving pore and surface adsorption, chemical interactions between oxygen-containing groups (C-O and -OH) and Pb(II), as well as Pb(II)-π interactions, which was responsible for the efficient removal of Pb(II) from wastewater. Moreover, CH500-800 retained a potential for reusability with a high adsorption stability (only 2.5 % Pb(II) desorption after 48 h) and ion selectivity (>93.0 %) in the presence of K(I), Na(I) or Ca(II). Additionally, a circular economic model was proposed to valorize biomass slag and steam in situ for treating Pb(II)-containing wastewater effectively in biomass power plants. This approach provided an innovative solution for utilizing waste to treat hazardous substances within practical engineering applications.
研究了利用发电厂副产品生物质炉渣和蒸汽绿色制备高性能、低成本的碳材料,用于高效处理含铅(Pb(II))废水。在 500 mL/min 的蒸汽流下,以 5 °C/min 的升温速率在 800 ℃ 下一步蒸汽活化 1 小时,制得了最佳碳材料 CH500-800(SBET=818.8 m2/g,Vt=0.46 cm3/g)。得到的 CH500-800 大大提高了对铅(II)的去除效率,最大吸附容量达到 191.1 mg/g。伪二阶、Elovich 和 Freundlich 模型很好地描述了废水中铅(II)的去除过程,表明其主要受异质表面的化学吸附和扩散作用的支配。吸附过程显示出一种协同机制,涉及孔隙和表面吸附、含氧基团(C-O 和 -OH)与 Pb(II)之间的化学作用以及 Pb(II)-π 相互作用,这是高效去除废水中 Pb(II)的原因。此外,CH500-800 还具有很高的吸附稳定性(48 小时后仅有 2.5% 的 Pb(II) 解吸)和离子选择性(93.0%),在 K(I)、Na(I) 或 Ca(II) 存在的情况下,仍具有重复使用的潜力。此外,还提出了一个循环经济模型,以就地对生物质炉渣和蒸汽进行估值,从而有效处理生物质发电厂中的含铅(II)废水。这种方法为在实际工程应用中利用废物处理有害物质提供了一种创新解决方案。
{"title":"Green preparation of carbon materials from biomass slag and steam as byproducts of power plants for efficient treatment of lead-containing wastewater","authors":"Yiping Luo ,&nbsp;Yuqian Sun ,&nbsp;Zhichen Zhao ,&nbsp;Zhengyue Dai ,&nbsp;Bin Jiang ,&nbsp;Zhicheng Jiang ,&nbsp;Xudong Liu ,&nbsp;Dong Li ,&nbsp;Fang Deng","doi":"10.1016/j.indcrop.2024.120011","DOIUrl":"10.1016/j.indcrop.2024.120011","url":null,"abstract":"<div><div>Green preparation of high-performance and cost-effective carbon materials using biomass slag and steam, which were the byproducts of power plants, for efficient treatment of lead (Pb(II))-containing wastewater was investigated. The optimum carbon material CH<sub>500</sub>-800 (S<sub>BET</sub>=818.8 m<sup>2</sup>/g and V<sub>t</sub>=0.46 cm<sup>3</sup>/g) was produced by one-step steam activation at 800 ℃ for 1 h under a 500 mL/min stream with a heating rate of 5 °C/min. The obtained CH<sub>500</sub>-800 greatly enhanced the efficiency of Pb(II) removal, achieving the maximum adsorption capacity of 191.1 mg/g. The removal of Pb(II) from wastewater was well described by the Pseudo-second-order, Elovich and Freundlich model, suggesting that it was predominantly governed by chemical adsorption and diffusion on heterogeneous surfaces. The adsorption process demonstrated a synergistic mechanism involving pore and surface adsorption, chemical interactions between oxygen-containing groups (C-O and -OH) and Pb(II), as well as Pb(II)-π interactions, which was responsible for the efficient removal of Pb(II) from wastewater. Moreover, CH<sub>500</sub>-800 retained a potential for reusability with a high adsorption stability (only 2.5 % Pb(II) desorption after 48 h) and ion selectivity (&gt;93.0 %) in the presence of K(I), Na(I) or Ca(II). Additionally, a circular economic model was proposed to valorize biomass slag and steam <em>in situ</em> for treating Pb(II)-containing wastewater effectively in biomass power plants. This approach provided an innovative solution for utilizing waste to treat hazardous substances within practical engineering applications.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 120011"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating the drying characteristics and curing behavior of bamboo scrimber base unit: Phenolic resin impregnated heat-treated bamboo bundles 研究竹蔑基材的干燥特性和固化行为:酚醛树脂浸渍热处理竹束
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119970
Xiaoman Wang, Jianxiong Lyu, Xianjun Li, Xingong Li, Xiaofeng Hao, Jianzheng Qiao, Yiqiang Wu, Kang Xu
The PHB serves as the fundamental unit of bamboo scrimber, with its drying rate, moisture content (MC) distribution, and post-drying curing degree being crucial factors for enhancing production efficiency, ensuring high-quality hot pressing, and optimizing the physical-mechanical properties of bamboo scrimber. This study investigated the impact of drying temperatures (50 ℃, 60 ℃, 70 ℃, 80 ℃) and stacking patterns (P1, P3, P6, P12) on the drying rate and MC distribution uniformity in PHB. Additionally, the curing behavior of PHB was examined using the differential scanning calorimetry (DSC) method. The results revealed that both the drying temperature and stacking patterns had a significant effect on the drying rate and MC distribution uniformity in PHB (P < 0.001). The MC of PHB exhibited significant variations at different locations during low-temperature drying, whereas increasing the temperature not only improved the uniformity in MC distribution. The greater number of layers made it easier for PHB to intertwine with each other, thereby reducing the flow channels for dry media and impeding heat/mass exchange. Consequently, this resulted in a decrease in both drying rate and MC distribution uniformity. Compared to PF resin (155.95 kJ/mol), the apparent activation energy of PHB decreased (104.78 kJ/mol) and the curing reaction rate increased. Within the temperature range of 50 ℃ to 80 ℃, under identical conditions, PHB exhibited a significantly higher degree of curing compared to PF resin. The differences in final curing degrees between them were 0.47, 0.31, 0.10, and 0.01 respectively. This indicated that PHB was more susceptible to undergoing a curing reaction during the drying process. Therefore, it is recommended to maintain the drying temperature at 60 ℃ and employ the P3 stacking pattern. The findings of this paper hold great significance in informing the design and optimization of the PHB drying process.
PHB是竹材的基本单位,其干燥速率、含水率(MC)分布和干燥后的固化程度是提高生产效率、确保热压质量和优化竹材物理机械性能的关键因素。本研究探讨了干燥温度(50 ℃、60 ℃、70 ℃、80 ℃)和堆叠模式(P1、P3、P6、P12)对 PHB 干燥速率和 MC 分布均匀性的影响。此外,还使用差示扫描量热法(DSC)研究了 PHB 的固化行为。结果表明,干燥温度和堆叠模式对 PHB 的干燥速率和 MC 分布均匀性均有显著影响(P < 0.001)。在低温干燥过程中,PHB 的 MC 在不同位置有明显的变化,而提高温度不仅能改善 MC 分布的均匀性,还能提高干燥速度。更多的层数使 PHB 更容易相互缠绕,从而减少了干燥介质的流动通道,阻碍了热量/质量交换。因此,这导致了干燥速率和 MC 分布均匀性的降低。与 PF 树脂(155.95 kJ/mol)相比,PHB 的表观活化能降低(104.78 kJ/mol),固化反应速率增加。在 50 ℃ 至 80 ℃ 的温度范围内,在相同条件下,PHB 的固化度明显高于 PF 树脂。它们的最终固化度分别相差 0.47、0.31、0.10 和 0.01。这表明 PHB 在干燥过程中更容易发生固化反应。因此,建议将干燥温度保持在 60 ℃,并采用 P3 堆积模式。本文的研究结果对 PHB 干燥过程的设计和优化具有重要意义。
{"title":"Investigating the drying characteristics and curing behavior of bamboo scrimber base unit: Phenolic resin impregnated heat-treated bamboo bundles","authors":"Xiaoman Wang,&nbsp;Jianxiong Lyu,&nbsp;Xianjun Li,&nbsp;Xingong Li,&nbsp;Xiaofeng Hao,&nbsp;Jianzheng Qiao,&nbsp;Yiqiang Wu,&nbsp;Kang Xu","doi":"10.1016/j.indcrop.2024.119970","DOIUrl":"10.1016/j.indcrop.2024.119970","url":null,"abstract":"<div><div>The PHB serves as the fundamental unit of bamboo scrimber, with its drying rate, moisture content (MC) distribution, and post-drying curing degree being crucial factors for enhancing production efficiency, ensuring high-quality hot pressing, and optimizing the physical-mechanical properties of bamboo scrimber. This study investigated the impact of drying temperatures (50 ℃, 60 ℃, 70 ℃, 80 ℃) and stacking patterns (P<sub>1</sub>, P<sub>3</sub>, P<sub>6</sub>, P<sub>12</sub>) on the drying rate and MC distribution uniformity in PHB. Additionally, the curing behavior of PHB was examined using the differential scanning calorimetry (DSC) method. The results revealed that both the drying temperature and stacking patterns had a significant effect on the drying rate and MC distribution uniformity in PHB (P &lt; 0.001). The MC of PHB exhibited significant variations at different locations during low-temperature drying, whereas increasing the temperature not only improved the uniformity in MC distribution. The greater number of layers made it easier for PHB to intertwine with each other, thereby reducing the flow channels for dry media and impeding heat/mass exchange. Consequently, this resulted in a decrease in both drying rate and MC distribution uniformity. Compared to PF resin (155.95 kJ/mol), the apparent activation energy of PHB decreased (104.78 kJ/mol) and the curing reaction rate increased. Within the temperature range of 50 ℃ to 80 ℃, under identical conditions, PHB exhibited a significantly higher degree of curing compared to PF resin. The differences in final curing degrees between them were 0.47, 0.31, 0.10, and 0.01 respectively. This indicated that PHB was more susceptible to undergoing a curing reaction during the drying process. Therefore, it is recommended to maintain the drying temperature at 60 ℃ and employ the P<sub>3</sub> stacking pattern. The findings of this paper hold great significance in informing the design and optimization of the PHB drying process.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119970"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An integrated strategy of reusing acid hydrolysate combining adapted Bacillus coagulans fermentation for comprehensive utilize carbohydrates of Chinese fir sawdust 结合凝结芽孢杆菌发酵综合利用杉木锯屑碳水化合物的酸水解物再利用综合策略
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119994
Shuiping Ouyang , Jiaming Fu , Chao Liu , Zhaojuan Zheng , Jia Ouyang
In this study, an efficient and economical method for fractionation and sequential utilization of whole components of Chinese fir sawdust (CFS) was explored. By reusing hemicellulose hydrolysate, 54 % sulfuric acid was saved during the pretreatment process. Additionally, a robust strain of Bacillus coagulans CC17B was obtained through adaptive evolution, which not only could utilize the 100 % (v/v) reused hydrolysate without detoxification but was also unaffected by carbon catabolism repression. Combined with fed-batch simultaneous saccharification and fermentation, 54.8 % of the carbohydrate of Chinese fir sawdust was finally converted to lactic acid through B. coagulans CC17B. Furthermore, 44.6 % of the lignin was recovered from the liquid fraction, showing potential for efficient conversion to bio-oil. Overall, the hydrolysate reusing process and high robust strain of B. coagulans CC17B was applied to improve the economics of CFS biorefinery, which provides a promising strategy for the complete utilization of softwood biomass.
本研究探索了一种高效、经济的方法,用于分馏和连续利用杉木锯屑(CFS)的全部成分。通过重复利用半纤维素水解物,在预处理过程中节省了 54% 的硫酸。此外,还通过适应性进化获得了一株强健的凝结芽孢杆菌 CC17B,它不仅可以利用 100% (v/v) 的再利用水解物而无需解毒,而且不受碳分解抑制的影响。结合喂料批次同步糖化和发酵,54.8% 的杉木锯屑碳水化合物最终通过凝结芽孢杆菌 CC17B 转化为乳酸。此外,液态部分回收了 44.6% 的木质素,显示出高效转化为生物油的潜力。总之,水解物再利用工艺和高活性凝结芽孢杆菌 CC17B 的应用提高了 CFS 生物精炼厂的经济效益,为软木生物质的完全利用提供了一种前景广阔的策略。
{"title":"An integrated strategy of reusing acid hydrolysate combining adapted Bacillus coagulans fermentation for comprehensive utilize carbohydrates of Chinese fir sawdust","authors":"Shuiping Ouyang ,&nbsp;Jiaming Fu ,&nbsp;Chao Liu ,&nbsp;Zhaojuan Zheng ,&nbsp;Jia Ouyang","doi":"10.1016/j.indcrop.2024.119994","DOIUrl":"10.1016/j.indcrop.2024.119994","url":null,"abstract":"<div><div>In this study, an efficient and economical method for fractionation and sequential utilization of whole components of <em>Chinese fir</em> sawdust (CFS) was explored. By reusing hemicellulose hydrolysate, 54 % sulfuric acid was saved during the pretreatment process. Additionally, a robust strain of <em>Bacillus coagulans</em> CC17B was obtained through adaptive evolution, which not only could utilize the 100 % (v/v) reused hydrolysate without detoxification but was also unaffected by carbon catabolism repression. Combined with fed-batch simultaneous saccharification and fermentation, 54.8 % of the carbohydrate of <em>Chinese fir</em> sawdust was finally converted to lactic acid through <em>B. coagulans</em> CC17B. Furthermore, 44.6 % of the lignin was recovered from the liquid fraction, showing potential for efficient conversion to bio-oil. Overall, the hydrolysate reusing process and high robust strain of <em>B. coagulans</em> CC17B was applied to improve the economics of CFS biorefinery, which provides a promising strategy for the complete utilization of softwood biomass.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119994"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Converting perennial ryegrass into lipid using the oleaginous yeast Metschnikowia pulcherrima 利用含油酵母 Metschnikowia pulcherrima 将多年生黑麦草转化为脂肪
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119990
Fatma Guler, Hannah S. Leese, Bernardo Castro-Dominguez, Christopher J. Chuck
Grass, a low-cost lignocellulosic feedstock with relatively low lignin content, serves as a potential carbon source for microbial processes due to its polymeric sugar content. However, converting carbohydrates into monomeric sugars presents challenges due to complex lignocellulosic matrix. In this study, a mixture of perennial ryegrass and white clover (RG) was pretreated with alkaline before being enzymatically hydrolysed for use as a fermentable sugar source for the oleaginous yeast Metschnikowia pulcherrima. The dilute alkaline pretreatment approach resulted in a 3 times improvement in the conversion of RG, yielding a fermentable sugar concentration of 56.5 g/L. The yeast exhibited a growth yield (Ym/m) of 0.47, producing 23.7 g/L of dry cell weight at 20°C over 140 hours, with a lipid content of 37 % with a similar composition to high oleic palm oil. These findings suggest that RG can be utilised for formulating an oleaginous yeast medium containing the necessary nutrients.
禾本科植物是一种木质素含量相对较低的低成本木质纤维素原料,由于其聚合物糖含量高,可作为微生物工艺的潜在碳源。然而,由于木质纤维素基质复杂,将碳水化合物转化为单体糖面临着挑战。在这项研究中,多年生黑麦草和白三叶(RG)的混合物在酶水解前进行了碱性预处理,以用作含油酵母 Metschnikowia pulcherrima 的发酵糖源。稀碱预处理方法使 RG 的转化率提高了 3 倍,产生的可发酵糖浓度为 56.5 克/升。酵母的生长产量(Ym/m)为 0.47,在 20°C 温度条件下,经过 140 小时,可产生 23.7 克/升的干细胞重量,脂质含量为 37%,其成分与高油酸棕榈油相似。这些发现表明,可以利用 RG 来配制含有必要营养成分的含油酵母培养基。
{"title":"Converting perennial ryegrass into lipid using the oleaginous yeast Metschnikowia pulcherrima","authors":"Fatma Guler,&nbsp;Hannah S. Leese,&nbsp;Bernardo Castro-Dominguez,&nbsp;Christopher J. Chuck","doi":"10.1016/j.indcrop.2024.119990","DOIUrl":"10.1016/j.indcrop.2024.119990","url":null,"abstract":"<div><div>Grass, a low-cost lignocellulosic feedstock with relatively low lignin content, serves as a potential carbon source for microbial processes due to its polymeric sugar content. However, converting carbohydrates into monomeric sugars presents challenges due to complex lignocellulosic matrix. In this study, a mixture of perennial ryegrass and white clover (RG) was pretreated with alkaline before being enzymatically hydrolysed for use as a fermentable sugar source for the oleaginous yeast <em>Metschnikowia pulcherrima</em>. The dilute alkaline pretreatment approach resulted in a 3 times improvement in the conversion of RG, yielding a fermentable sugar concentration of 56.5 g/L. The yeast exhibited a growth yield (Ym/m) of 0.47, producing 23.7 g/L of dry cell weight at 20°C over 140 hours, with a lipid content of 37 % with a similar composition to high oleic palm oil. These findings suggest that RG can be utilised for formulating an oleaginous yeast medium containing the necessary nutrients.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119990"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced mechanism of physical and mechanical properties of bamboo scrimber prepared by roller-pressing impregnation method 提高辊压浸渍法制备的竹材修剪刀物理和机械性能的机理
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-08 DOI: 10.1016/j.indcrop.2024.119962
Chen Yang , Yamei Zhang , Yahui Zhang , Wenji Yu
Bamboo Scrimber, as a green and environmentally friendly biomass material, offers advantages such as high resource utilization, high strength, and high added value to products. However, the traditional preparation method for bamboo scrimber(T-BS), which utilizes the traditional cage impregnation method, results in uneven Phenol-Formaldehyde(PF) resin distribution to the oriented bamboo fiber mats(OBFMs). This unevenness can lead to defects such as cracking and deformation in bamboo scrimber products during application. This study employs roller-pressing impregnation technology to prepare bamboo scrimber(R-BS) and investigates the mechanisms by which this process affects the physical properties of bamboo scrimber. By observing the surface morphology, microstructure, resin distribution of OBFMs and surface chemical composition, surface wettability, water resistance, and mechanical properties of bamboo scrimber, the mechanism of the effect of the roller impregnation method on bamboo scrimber is revealed. The results show that, compared to traditional methods, roller-pressing impregnation technology enhances the uniformity of resin distribution and penetration depth within the OBFMs, thereby effectively improving the surface properties of bamboo scrimber. Additionally, this method reduces the average pore size on the surface of bamboo scrimber by 14.87 %, increases the contact angle by 30.92 %, and decreases the water absorption rate (WAR) and thickness swelling rate (TSR) by 13.76 % and 17.67 %, respectively. Furthermore, it enhances MOR by 8.69 % and hardness by 10.33 %. This study offers a reference for optimizing the preparation process of bamboo scrimber and the continuous production of the OBFMs impregnation process.
竹纤维作为一种绿色环保的生物质材料,具有资源利用率高、强度高、产品附加值高等优点。然而,传统的竹纤维毡(T-BS)制备方法采用传统的笼式浸渍法,会导致定向竹纤维毡(OBFM)上的酚醛树脂分布不均匀。这种不均匀会导致竹纤维产品在应用过程中出现开裂和变形等缺陷。本研究采用辊压浸渍技术制备竹集成材(R-BS),并研究了该工艺对竹集成材物理性能的影响机制。通过观察竹材表面形貌、微观结构、OBFMs树脂分布以及竹材表面化学成分、表面润湿性、耐水性和力学性能,揭示了辊压浸渍法对竹材的影响机理。结果表明,与传统方法相比,辊压浸渍技术提高了树脂分布的均匀性和在定向结构材料中的渗透深度,从而有效改善了竹材的表面性能。此外,这种方法还能使竹材表面的平均孔径减小 14.87%,接触角增大 30.92%,吸水率(WAR)和厚度膨胀率(TSR)分别降低 13.76% 和 17.67%。此外,它还提高了 8.69 % 的摩尔值和 10.33 % 的硬度。这项研究为优化竹材清材的制备工艺和 OBFMs 浸渍工艺的连续生产提供了参考。
{"title":"Enhanced mechanism of physical and mechanical properties of bamboo scrimber prepared by roller-pressing impregnation method","authors":"Chen Yang ,&nbsp;Yamei Zhang ,&nbsp;Yahui Zhang ,&nbsp;Wenji Yu","doi":"10.1016/j.indcrop.2024.119962","DOIUrl":"10.1016/j.indcrop.2024.119962","url":null,"abstract":"<div><div>Bamboo Scrimber, as a green and environmentally friendly biomass material, offers advantages such as high resource utilization, high strength, and high added value to products. However, the traditional preparation method for bamboo scrimber(T-BS), which utilizes the traditional cage impregnation method, results in uneven Phenol-Formaldehyde(PF) resin distribution to the oriented bamboo fiber mats(OBFMs). This unevenness can lead to defects such as cracking and deformation in bamboo scrimber products during application. This study employs roller-pressing impregnation technology to prepare bamboo scrimber(R-BS) and investigates the mechanisms by which this process affects the physical properties of bamboo scrimber. By observing the surface morphology, microstructure, resin distribution of OBFMs and surface chemical composition, surface wettability, water resistance, and mechanical properties of bamboo scrimber, the mechanism of the effect of the roller impregnation method on bamboo scrimber is revealed. The results show that, compared to traditional methods, roller-pressing impregnation technology enhances the uniformity of resin distribution and penetration depth within the OBFMs, thereby effectively improving the surface properties of bamboo scrimber. Additionally, this method reduces the average pore size on the surface of bamboo scrimber by 14.87 %, increases the contact angle by 30.92 %, and decreases the water absorption rate (WAR) and thickness swelling rate (TSR) by 13.76 % and 17.67 %, respectively. Furthermore, it enhances MOR by 8.69 % and hardness by 10.33 %. This study offers a reference for optimizing the preparation process of bamboo scrimber and the continuous production of the OBFMs impregnation process.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"223 ","pages":"Article 119962"},"PeriodicalIF":5.6,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Industrial Crops and Products
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1