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Improvement of the properties of essential oil-starch film with whey protein isolated fibril and sodium caseinate 用分离乳清蛋白纤维和酪蛋白酸钠改善精油-淀粉薄膜的性能
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119975
Qianwen Yang , Furun Zheng , Yue Cheng , Ruoxuan Xu , Chao Yuan , Zhengzong Wu , Die Dong , Haibo Zhao , Katsuyoshi Nishinari , Meng Zhao , Bo Cui
Essential oil-starch films are important bioactive films, but their properties are not good enough and need improved. In this work, sodium caseinate (CAS) was utilized to improve the distribution and release of Cinnamon essential oils (CEO), and whey protein isolate fibril (WPIF) of different loadings (0 %, 4 %, 8 % and 12 %, w/w) in starch basis was added to enhance the mechanical properties of starch films. Physical, mechanical, thermal, structural, antibacterial properties, and essential oil release in the films were investigated. CAS-CEO nanoemulsion (190.7±9.4 nm) promoted the compatibility between starch and WPIF. The addition of CAS-CEO nanoemulsion and WPIF synergistically enhanced the tensile strength, stiffness, crystallinity and antibacterial effects, reduced the water vapor permeability of films, and especially delayed the release of essential oil from the films. The starch film composited with CAS-CEO nanoemulsion and appropriate loading of WPIF (8 %) significantly improved the film properties, but the addition of 12 % WPIF disrupted the properties, which might be attributed to the excessive aggregation of WPIF. The work provided useful information for improving the properties of CEO films via adding the emulsifier of CAS and the texture booster of WPIF, which could help to improve the film properties containing oil-soluble bioactive agents.
精油-淀粉薄膜是一种重要的生物活性薄膜,但其性能还不够好,需要加以改进。在这项研究中,利用酪蛋白酸钠(CAS)来改善肉桂精油(CEO)的分布和释放,并在淀粉基础上添加不同负载量(0 %、4 %、8 % 和 12 %,w/w)的乳清蛋白分离纤维(WPIF)来提高淀粉薄膜的机械性能。研究了薄膜的物理、机械、热、结构、抗菌性能和精油释放情况。CAS-CEO 纳米乳液(190.7±9.4 nm)促进了淀粉与 WPIF 的相容性。CAS-CEO 纳米乳液和 WPIF 的加入协同增强了薄膜的拉伸强度、挺度、结晶度和抗菌效果,降低了薄膜的水蒸气渗透性,尤其是延缓了精油从薄膜中的释放。用 CAS-CEO 纳米乳液和适当添加的 WPIF(8%)复合而成的淀粉膜明显改善了薄膜的性能,但添加 12% 的 WPIF 则破坏了薄膜的性能,这可能是由于 WPIF 过度聚集造成的。这项研究为通过添加 CAS 的乳化剂和 WPIF 的质构促进剂来改善 CEO 薄膜的性能提供了有用的信息,有助于改善含有油溶性生物活性剂的薄膜性能。
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引用次数: 0
Carboxylation of lignin by oxidation with hydrogen peroxide and its use as emulsion stabilizer 过氧化氢氧化木质素的羧化及其作为乳液稳定剂的应用
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120019
Jost Ruwoldt , Robert Skunde , Mihaela Tanase-Opedal , Kristin Syverud
This article studied the carboxylation of technical lignin and subsequent use as emulsion stabilizer. Oxidation was conducted with hydrogen peroxide under alkaline conditions. As both titration and Fourier-transform infrared spectroscopy (FTIR) showed, phenolic units were converted to carboxyl groups by oxidation. The treatment was most effective for soda lignin from Arkansas/straw, but also had significant effect on the softwood kraft lignin and softwood soda lignin. An increase in molecular weight by size-exclusion chromatography was further noted, which was less pronounced for the Arkansas/straw lignin. It was argued that one contributing mechanism was the monolignol composition, as the lignin from annual plants also contained S-units in addition to the G-units that mostly made up the softwood lignin. Moreover, purification prior to oxidation, i.e., removal of inorganic components in the lignin, showed no significant effect on the carboxylation process. Emulsion stabilization was studied with respect to the pH using three oxidized kraft lignins. Here, lower pH yielded better emulsion stabilization, unless the lignin precipitated, which switched the stabilization mechanism from interfacial adsorption to particle stabilization. It was argued that the degree of ionization played a key role, as a lower degree of ionization corresponded with better emulsion stability at the same ionic strength. At last, measurements of interfacial tension and interfacial rheology found that oxidized lignin behaved similar to water-soluble lignosulfonates and created viscoelastic interface layers.
本文研究了工业木质素的羧化及其作为乳液稳定剂的用途。在碱性条件下使用过氧化氢进行氧化。滴定法和傅立叶变换红外光谱法(FTIR)都表明,酚基单位在氧化作用下转化为羧基。这种处理方法对来自阿肯色州/秸秆的苏打木质素最为有效,但对软木牛皮纸木质素和软木苏打木质素也有显著效果。通过尺寸排阻色谱法还进一步发现了分子量的增加,但阿肯色州/秸秆木质素的增加并不明显。有观点认为,造成这种现象的原因之一是单木酚成分,因为一年生植物的木质素除了主要构成软木木质素的 G-单位外,还含有 S-单位。此外,氧化前的净化(即去除木质素中的无机成分)对羧化过程没有明显影响。使用三种氧化牛皮纸木质素研究了乳液稳定性与 pH 值的关系。在这里,pH 值越低,乳液稳定性越好,除非木质素发生沉淀,从而将稳定机制从界面吸附转变为颗粒稳定。有观点认为,电离程度起着关键作用,因为在相同的离子强度下,电离程度越低,乳液稳定性越好。最后,对界面张力和界面流变学的测量发现,氧化木质素的行为与水溶性木质素磺酸盐相似,并产生了粘弹性界面层。
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引用次数: 0
Method development and application for multi-phenolic components in the processing of Dendrobium officinale using UPLC coupled with mass spectrometry and chemometric analysis 利用 UPLC 联用质谱法和化学计量分析法开发和应用铁皮石斛加工过程中多酚类成分的方法
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120009
Xinxin Yang , Pengfei Liu , Fengzhong Wang , Tingting Zhang , Nengbo Li , Cong Lu , Litao Tong , Jiameng Liu , Jing Sun , Bei Fan
Dendrobium officinale (DO) is a perennial herb that has been utilized medicinal and edible purposes for thousands of years, often transforming into 'Fengdou' after drying. Despite its long-standing use, the specific phenolic components present during DO processing have remained elusive. This study established a method for the simultaneous and accurate quantification of 27 phenolic compounds during DO processing employing ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), with 8 reference-free components optimized through an online strategy. Furthermore, correlation analysis and molecular docking were conducted to further screened and validated 6 phenolics with α-glucosidase inhibitory activity, including vanillin, p-coumaric acid, 4-hydroxybenzaldehyde, resveratrol, coniferyl alcohol, and dihydropinosylvin. Notably, resveratrol exhibited the lowest binding energy at −7.7 kcal/mol among these compounds. These findings significantly contribute to the development of the deep-processing techniques for DO and the hypoglycaemic functional food industry by providing data that support the elucidation of medicinal substances in DO.
铁皮石斛(Dendrobium officinale,DO)是一种多年生草本植物,数千年来一直被用于药用和食用目的,干燥后通常会变成 "凤斗"。尽管铁皮石斛的使用历史悠久,但其加工过程中的特定酚类成分却一直难以确定。本研究采用超高效液相色谱-串联质谱法(UPLC-MS/MS)建立了一种同时准确定量 DO 加工过程中 27 种酚类化合物的方法,并通过在线策略优化了 8 种无参考成分。此外,还进行了相关分析和分子对接,进一步筛选和验证了 6 种具有α-葡萄糖苷酶抑制活性的酚类物质,包括香兰素、对香豆酸、4-羟基苯甲醛、白藜芦醇、针叶醇和二氢白藜芦醇。值得注意的是,在这些化合物中,白藜芦醇的结合能最低,为-7.7 kcal/mol。这些发现为阐明 DO 中的药用物质提供了数据支持,从而大大促进了 DO 深加工技术的发展和降血糖功能食品行业的发展。
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引用次数: 0
Advances in engineered microbes for sustainable biofuel production: Current research and future outlook on lignocellulose utilization 工程微生物在可持续生物燃料生产方面的进展:木质纤维素利用的当前研究与未来展望
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119988
R. Kamalesh, Alan Shaji, A. Saravanan, A.S. Vickram, P.R. Yaashikaa
The upsurge in global warming, combined with the depletion of fossil fuels, has led researchers interested in other fuel sources. The search for alternative fossils moved towards the biological; degradation of waste biomass for the production of biofuels such as biohydrogen, biodiesel and bioethanol. The capability of biofuel production can be enhanced by the utilization of a model strain that holds the ability to operate at high substrate, transport sugar through deregulated pathways, and increase metabolic fluxes for improved production. Biofuel production by microorganisms shares similar properties with petroleum-based fuels. Achieving a sufficiently high yield of fuel necessitates the practical use of engineered microbes. The purpose of this review is to provide a comprehensive overview of the sources, pretreatment strategies, and production technologies involving metabolic engineering for biofuel generation. The lignocellulosic biomass has been identified as the major sources of biomass with physical treatment reported to be the most followed pre-treatment strategy. Metabolic engineering of microbes is preferred over other production techniques due to its higher efficiency, optimization of metabolic pathways, increased enzyme production and reduced by-product formation. The recent advances in engineered microbes focus on the optimization of metabolic pathways, CRISPR/Cas9, Gene Editing and modular engineering. This review also focuses on the economic and environmental concerns of biofuel production on feedstock utilization, management practices, and production scale. Finally, this paper highlights the future endeavours of the implantation of effective low-cost technologies for biofuel production in advancing culture conditions and genetic modification of biofuel-generating microbial species.
全球变暖的加剧,加上化石燃料的枯竭,使研究人员对其他燃料来源产生了兴趣。寻找化石替代品的工作转向了生物降解废弃生物质,以生产生物燃料,如生物氢、生物柴油和生物乙醇。生物燃料生产的能力可以通过利用模式菌株来提高,这种菌株能够在高底物条件下工作,通过失调途径运输糖分,并增加代谢通量以提高产量。微生物生产生物燃料与石油燃料具有相似的特性。要获得足够高的燃料产量,就必须实际使用工程微生物。本综述旨在全面概述生物燃料的来源、预处理策略和涉及代谢工程的生产技术。木质纤维素生物质已被确定为生物质的主要来源,据报道,物理处理是最常用的预处理策略。与其他生产技术相比,微生物代谢工程更受青睐,因为它效率更高、代谢途径更优化、酶产量更高、副产品生成更少。工程微生物的最新进展主要集中在代谢途径优化、CRISPR/Cas9、基因编辑和模块化工程等方面。本综述还重点介绍了生物燃料生产在原料利用、管理方法和生产规模方面的经济和环境问题。最后,本文强调了未来在生物燃料生产中植入有效的低成本技术的努力,以改善生物燃料生成微生物物种的培养条件和基因修饰。
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引用次数: 0
Multifunctional-structural integrated wood cellulose‑based composite with Magpie’s Nest-shaped enhance flame retardancy and electromagnetic interference shielding 鹊巢型多功能结构集成木纤维素基复合材料增强了阻燃性和电磁干扰屏蔽性能
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119989
Qiang Guo , Shuaiqi Hu , Yanfei Pan , Xiaohe Jiang , Zhenhua Xue , Jintian Huang
The construction of multifunctional hydrophobic wood with electromagnetic interference shielding effectiveness had attracted great interest, at the same time, the problem of wood flammability must also be solved. In this study, the effectiveness of DOPO-based P and Zn complexes in improving wood flame retardancy and electromagnetic interference shielding effectiveness, and the outstanding contribution of lignocellulose skeleton and multi-interface to shielding effectiveness was demonstrated. DOPO-based P and Zn complexes with “Needle-punched” structure and much functional groups were loaded on the wood surface, and then micro-nano metal Ni particles were deposited. Through the optimization of the wood surface and itself structure, and the construction of a complete conductive network. Wood/ZnP/Ni composites electromagnetic interference shielding effectiveness couold reach 65.04 dB in the X-band. It was worth noting that the lignocellulose skeleton prepared by the top-down method and multi-interface structure increase electromagnetic interference shielding effectiveness by 10.71 % and 33.89 %, respectively. In addition, the synergistic effect of DOPO-based P and Zn complexes and the introduction of PDMS layer improved the flame retardancy (limiting oxygen index was 35.3 %) and hydrophobicity (contact angle was 133.07°), which avoided the wood poor durability problem in use. There was no doubt that it provided a new strategy for the preparation of novel materials with low-cost and extremely excellent electromagnetic interference shielding properties.
构建具有电磁干扰屏蔽效能的多功能疏水木材引起了人们的极大兴趣,与此同时,木材的可燃性问题也亟待解决。本研究证明了 DOPO 基 P 和 Zn 复合物在提高木材阻燃性和电磁干扰屏蔽效能方面的有效性,以及木质纤维素骨架和多界面对屏蔽效能的突出贡献。在木材表面负载具有 "针刺 "结构和大量官能团的 DOPO 基 P 和 Zn 复合物,然后沉积微纳米金属 Ni 粒子。通过优化木材表面和自身结构,构建了一个完整的导电网络。木材/ZnP/Ni 复合材料的电磁干扰屏蔽效果在 X 波段可达 65.04 dB。值得注意的是,采用自上而下法制备的木质纤维素骨架和多界面结构的电磁干扰屏蔽效果分别提高了 10.71 % 和 33.89 %。此外,基于 DOPO 的 P 和 Zn 复合物的协同作用以及 PDMS 层的引入提高了阻燃性(极限氧指数为 35.3%)和疏水性(接触角为 133.07°),避免了木材在使用中耐久性差的问题。毫无疑问,这为制备具有低成本和极佳电磁干扰屏蔽性能的新型材料提供了一种新策略。
{"title":"Multifunctional-structural integrated wood cellulose‑based composite with Magpie’s Nest-shaped enhance flame retardancy and electromagnetic interference shielding","authors":"Qiang Guo ,&nbsp;Shuaiqi Hu ,&nbsp;Yanfei Pan ,&nbsp;Xiaohe Jiang ,&nbsp;Zhenhua Xue ,&nbsp;Jintian Huang","doi":"10.1016/j.indcrop.2024.119989","DOIUrl":"10.1016/j.indcrop.2024.119989","url":null,"abstract":"<div><div>The construction of multifunctional hydrophobic wood with electromagnetic interference shielding effectiveness had attracted great interest, at the same time, the problem of wood flammability must also be solved. In this study, the effectiveness of DOPO-based P and Zn complexes in improving wood flame retardancy and electromagnetic interference shielding effectiveness, and the outstanding contribution of lignocellulose skeleton and multi-interface to shielding effectiveness was demonstrated. DOPO-based P and Zn complexes with “Needle-punched” structure and much functional groups were loaded on the wood surface, and then micro-nano metal Ni particles were deposited. Through the optimization of the wood surface and itself structure, and the construction of a complete conductive network. Wood/ZnP/Ni composites electromagnetic interference shielding effectiveness couold reach 65.04 dB in the X-band. It was worth noting that the lignocellulose skeleton prepared by the top-down method and multi-interface structure increase electromagnetic interference shielding effectiveness by 10.71 % and 33.89 %, respectively. In addition, the synergistic effect of DOPO-based P and Zn complexes and the introduction of PDMS layer improved the flame retardancy (limiting oxygen index was 35.3 %) and hydrophobicity (contact angle was 133.07°), which avoided the wood poor durability problem in use. There was no doubt that it provided a new strategy for the preparation of novel materials with low-cost and extremely excellent electromagnetic interference shielding properties.</div></div>","PeriodicalId":13581,"journal":{"name":"Industrial Crops and Products","volume":"222 ","pages":"Article 119989"},"PeriodicalIF":5.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653852","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
Ecological impacts of diversified agroforestry on soil nutrients and bacterial communities in Pinus massoniana plantations in the southern subtropics 多样化农林业对南亚热带马松种植园土壤养分和细菌群落的生态影响
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.119933
Saif Ullah , Xiaomei Han , Izhar Ali , Wannian Li , Tong Wu , Yuanyuan Xu , Mei Yang
Converting forests from single-species to mixed-species planting affects soil chemical and biological properties, yet its impacts within medicinal plant-based agroforestry systems remain largely unexamined. This research assessed the soil nutrient spectrum and bacterial community composition in a monoculture Pinus massoniana (CK) and various agroforestry models: (M1) Pinus massoniana and Alpina oxyphylla, (M2) Pinus massoniana and Ficus simplicissima, (M3) Pinus massoniana and Amomum villosum, and (M4) Pinus massoniana and Curcuma longa, within both field soil and rhizosphere environments. Results showed significant (p < 0.05) improvements in soil pH and cation exchange capacity (CEC) in agroforestry systems. Agroforestry models exhibited greater variability in soil macronutrient distribution, including nitrogen, potassium, calcium, magnesium, and sulfur (N, K, Ca, Mg, S), compared to monocultures. Specifically, Curcuma longa (M4C.RS) had 46.12 % higher total N content than monoculture Pinus massoniana. Micronutrients were higher in agroforestry rhizospheres, except for total zinc, which was higher in monoculture Pinus massoniana. Bacterial community analysis revealed dominant phyla including Acidobacteriota, Proteobacteria, Actinobacteria, and Chloroflexi. Agroforestry models had higher abundance of Proteobacteria, while monoculture had higher Acidobacteriota. Alpha diversity metrics, including Chao1 and Shannon indices, indicated higher species richness and evenness in agroforestry models, particularly in the rhizosphere of Amomum villosum (M3A.RS) and Curcuma longa (M4C.RS). Phylogenetic analysis indicated greater genetic diversity in agroforestry models, in terms of species richness and phylogenetic variation especially for Proteobacteria. Cluster analysis and NMDS revealed close grouping of agroforestry models, with dbRDA showing significant associations between environmental variables (pH, CEC, and nutrient profile), emphasizing their critical role in shaping bacterial community composition, supported by Spearman correlation. Functional prediction (PICRUSt2) indicated metabolism as the predominant functional category. Therefore, transition from monoculture to agroforestry, especially with Curcuma longa (M4), significantly enhanced soil fertility and ecosystem sustainability.
将森林从单一树种种植转变为混合树种种植会影响土壤的化学和生物特性,但其对以药用植物为基础的农林系统的影响在很大程度上仍未得到研究。本研究评估了在田间土壤和根瘤菌层环境中,单一种植的马尾松(CK)和各种农林模式(M1)马尾松和Alpina oxyphylla、(M2)马尾松和Ficus simplicissima、(M3)马尾松和Amomum villosum以及(M4)马尾松和莪术)的土壤养分谱和细菌群落组成。结果表明,农林系统的土壤 pH 值和阳离子交换容量(CEC)有明显改善(p < 0.05)。与单一种植相比,农林模式在土壤宏量营养元素(包括氮、钾、钙、镁和硫(N、K、Ca、Mg、S))分布方面表现出更大的差异性。具体而言,莪术(M4C.RS)的总氮含量比单一栽培的马尾松(Pinus massoniana)高 46.12%。农林根瘤菌群中的微量营养元素含量较高,但单一栽培的马尾松中的总锌含量较高。细菌群落分析显示,优势菌门包括酸性杆菌、蛋白质细菌、放线菌和绿杆菌。农林模式中的变形菌较多,而单一栽培模式中的酸性杆菌较多。阿尔法多样性指标(包括 Chao1 和香农指数)表明,农林模式中的物种丰富度和均匀度较高,尤其是在菰(Amomum villosum,M3A.RS)和莪术(Curcuma longa,M4C.RS)的根瘤菌群中。系统发育分析表明,在物种丰富度和系统发育变异方面,农林模式具有更高的遗传多样性,特别是在蛋白细菌方面。聚类分析和 NMDS 显示,农林模式之间的分组关系密切,dbRDA 显示环境变量(pH 值、CEC 和养分状况)之间存在显著关联,强调了这些变量在塑造细菌群落组成方面的关键作用,Spearman 相关性也证明了这一点。功能预测(PICRUSt2)表明,新陈代谢是最主要的功能类别。因此,从单一种植过渡到农林业,特别是使用莪术(M4),可显著提高土壤肥力和生态系统的可持续性。
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引用次数: 0
Diversity of chemical compounds in lily fragrance and identification of key sensory markers 百合香味中化学成分的多样性和关键感官标记的鉴定
IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Pub Date : 2024-11-09 DOI: 10.1016/j.indcrop.2024.120034
Yiwei Zhou , Fang Wang , Qin Wang , Yiwei Chen , Jinfeng Dong , Yuanjun Ye , Genfa Zhu , Yanping Fan , Yechun Xu
Lilies are economically significant crops, and their fragrance is a crucial trait for cut flowers. Different lily varieties exhibit a rich diversity of fragrance profiles. To identify chemical markers associated with sensory attributes, this study screened 36 popular cut lily varieties with varying fragrances. Sensory analysis and HS–SPME–GC–MS were used to evaluate their fragrance characteristics. The aroma intensity evaluation showed that OT and O varieties had stronger fragrances, while LA and L varieties had lower fragrance intensities. LO, L, and LA varieties were preferred by evaluators over O, OA, and OT varieties. However, there was no significant correlation between aroma intensity and hedonic tone. A total of 73 VOCs were detected. Methyl benzoate, β-myrcene, (E)-β-ocimene, allo-ocimene, ethyl benzoate, and (Z)-caryophyllene were present in the fragrances of most varieties. PCA and HCA analyses indicated that the relative emission of volatile organic compounds (VOCs) could effectively distinguish the fragrance characteristics of LO, O, and OT varieties, while the proportion of VOCs emissions could differentiate LA, LO, and OT varieties. PLS regression and jackknife analyses identified that the relative emission and proportion of terpinolene, eugenol, and (E)-isoeugenol were positively correlated with aroma intensity. Linalool (proportion) and cyclopentene, 3-isopropenyl-5,5-dimethyl- were positively correlated with hedonic tone, while methyl salicylate (proportion) was negatively correlated with hedonic tone. These findings provide potential chemical markers for the efficient evaluation of cut lily fragrances and offer references for selecting raw materials for lily fragrance oils and hydrosols.
百合是具有重要经济价值的作物,其香味是切花的一个重要特征。不同的百合品种表现出丰富多样的香味特征。为了确定与感官属性相关的化学标记,本研究筛选了 36 个具有不同香味的流行切花百合品种。感官分析和 HS-SPME-GC-MS 被用来评估它们的香味特征。香气强度评估显示,OT 和 O 品种的香气较浓,而 LA 和 L 品种的香气强度较低。与 O、OA 和 OT 品种相比,LO、L 和 LA 品种更受评价者青睐。然而,香气强度与享乐基调之间没有明显的相关性。共检测出 73 种挥发性有机化合物。大多数品种的香气中都含有苯甲酸甲酯、β-月桂烯、(E)-β-ocimene、allo-ocimene、苯甲酸乙酯和(Z)-石竹烯。PCA 和 HCA 分析表明,挥发性有机化合物(VOCs)的相对排放量能有效区分 LO、O 和 OT 品种的香气特征,而 VOCs 的排放比例则能区分 LA、LO 和 OT 品种。PLS 回归和杰克刀分析表明,萜品油烯、丁香酚和(E)-异丁香酚的相对排放量和比例与香气强度呈正相关。芳樟醇(比例)和环戊烯、3-异丙烯基-5,5-二甲基-与享乐调呈正相关,而水杨酸甲酯(比例)与享乐调呈负相关。这些发现为有效评估切花百合香味提供了潜在的化学标记,并为选择百合香精油和水醇的原材料提供了参考。
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引用次数: 0
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。
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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。
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引用次数: 0
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Industrial Crops and Products
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