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Regulatory role of calcium sulfide in ripening delay of postharvest bananas 硫化钙对香蕉采后延迟成熟的调控作用
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-09-06 DOI: 10.1016/j.fochms.2025.100297
Hong Xu , Xueting Bi , Junjie Xing , Mengqian Guo , Haoran Zhang , Xuejie Zhang , Wei Li , Bingfu Lei
Hydrogen sulfide (H₂S) has been demonstrated to delay ripening and senescence in various fruits, offering great capability for postharvest preservation. However, existing application methods face several limitations, such as unstable release, difficulty in dosage control, and safety concerns, and its regulatory mechanisms in fruit systems remain unclear. In this study, calcium sulfide (CaS) was used as a slow-release H₂S donor that gradually releases H₂S through reactions with airborne moisture and carbon dioxide to treat bananas. CaS treatment significantly downregulated key ethylene biosynthetic genes and corresponding enzymes (ACO and ACS), thereby reducing ethylene production. The expression of starch-degrading and cell wall-modifying genes was also suppressed, delaying starch breakdown and cell wall disassembly. Enzyme assays and transcriptomic analyses confirmed that CaS delays banana ripening through coordinated regulation at both transcriptional and biochemical levels. As a result, CaS treatment effectively extended shelf life and maintained fruit quality of bananas. These findings reveal the potential of CaS as a novel H₂S-releasing agent for postharvest preservation.
硫化氢(H₂S)已被证明可以延缓各种水果的成熟和衰老,为采后保存提供了很大的能力。然而,现有的应用方法存在释放不稳定、剂量控制困难、安全性问题等局限性,且其在水果系统中的调控机制尚不清楚。在本研究中,硫化钙(CaS)作为缓释H₂S供体,通过与空气中的水分和二氧化碳反应逐渐释放H₂S来处理香蕉。CaS处理显著下调了关键的乙烯生物合成基因(ACO)和相应的酶(ACS),从而降低了乙烯的产量。淀粉降解和细胞壁修饰基因的表达也受到抑制,延缓了淀粉的分解和细胞壁的破坏。酶分析和转录组学分析证实,CaS通过转录和生化水平的协调调节延迟香蕉成熟。结果表明,CaS处理有效地延长了香蕉的货架期,保持了香蕉的果实品质。这些发现揭示了CaS作为一种新的H₂释放剂用于采后保存的潜力。
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引用次数: 0
Deciphering the metabolic patterns of cashew apple ripening process: A comprehensive non-targeted metabolomics analysis 解读腰果苹果成熟过程的代谢模式:一项全面的非靶向代谢组学分析
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-09-02 DOI: 10.1016/j.fochms.2025.100296
Haijie Huang , Li Zhao , Weijian Huang , Xuejie Feng , Fuchu Hu , Ya Zhao , Huiliang Li , Yunlu Peng , Yuhan Wang , Zhongrun Zhang , Yijun Liu
Metabolite changes during the ripening process of cashew apples are crucial for their quality development. A total of 2379 metabolites were isolated and identified from fresh cashew apples at four different ripening stages using UHPLC-MS. Metabolite set enrichment analysis (MSEA) revealed that the differential metabolites in CA2_vs_CA1, CA3_vs_CA2, and CA4_vs_CA3 comparisons were mainly enriched in amino acids and peptides, steroids, pyrimidines, and fatty acids and conjugates, etc. Volcano plot analysis identified 631, 384, and 392 upregulated metabolites, and 625, 923, and 392 downregulated metabolites in CA2_vs_CA1, CA3_vs_CA2, and CA4_vs_CA3 comparisons, respectively. KEGG pathway enrichment analysis demonstrated that these differential metabolites were primarily involved in aminoacyl-tRNA biosynthesis, purine metabolism, and glycine, etc. Notably, the differential metabolites in CA4_vs_CA3 showed the highest enrichment in d-glutamine and D-glutamate metabolism, as well as phenylalanine. The metabolic profile of cashew apples revealed stage-specific patterns during ripening, offering key insights for optimizing harvest, storage, and processing.
腰果成熟过程中代谢物的变化对其品质发育至关重要。采用高效液相色谱-质谱法从4个不同成熟期的新鲜腰果中分离鉴定了2379种代谢物。代谢物集富集分析(MSEA)显示,CA2_vs_CA1、CA3_vs_CA2和CA4_vs_CA3的差异代谢物主要富集于氨基酸和多肽、类固醇、嘧啶、脂肪酸和偶联物等。火山图分析在CA2_vs_CA1、CA3_vs_CA2和CA4_vs_CA3比较中分别鉴定出631、384和392个上调代谢物,625、923和392个下调代谢物。KEGG通路富集分析表明,这些差异代谢物主要参与氨酰基trna生物合成、嘌呤代谢、甘氨酸等。值得注意的是,CA4_vs_CA3的差异代谢物在d-谷氨酰胺和d-谷氨酸代谢以及苯丙氨酸中富集程度最高。腰果苹果的代谢谱揭示了成熟过程中特定阶段的模式,为优化收获、储存和加工提供了关键见解。
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引用次数: 0
Proteomic changes associated with health benefit properties in fresh and preserved mustard greens 新鲜和腌制芥菜中有益健康的蛋白质组学变化
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-26 DOI: 10.1016/j.fochms.2025.100295
Charanya Saekampang , Vipawan Pimpak , Poowadol Promwat , Pongsakorn Kruaweangmol , Narumon Phaonakrop , Sittiruk Roytrakul , Ulaiwan Withayagiat , Paiboon Tunsagool

Background

Mustard greens are gaining global popularity, but preservation methods like salting and pickling raise specific concerns related to high sodium content and microbial safety. This study conducted a proteomics analysis to identify health-beneficial proteins in mustard greens.

Objective

To explore protein profiles associated with health benefits in fresh and preserved mustard greens.

Methods

Shotgun proteomics combined with LC-MS/MS was applied to identify proteins, followed by statistical analysis using Welch's t-test with Benjamini–Hochberg false discovery rate correction. Unique proteins were visualized with a Venn diagram, annotated using the Gene Ontology (GO) database, and mapped to functional categories with Sankey diagrams. In silico validation of protein stability and gastrointestinal digestion was performed to assess the release of bioactive peptides.

Results

A total of 118 high-confidence proteins were identified, including 27 unique to fresh, 23 to salted, and 22 to pickled mustard greens. Unique proteins in fresh mustard greens were associated with carbohydrate, amino acid, and nucleotide metabolism. Pickled mustard greens had proteins linked to carbohydrate, lipid, glycerol, vitamin, and cofactor metabolism, while salted mustard greens had proteins involved in amino acid, nucleotide, lipid, and glycerol metabolism. In silico digestion revealed that approximately 19–20 % of peptide fragments contained bioactive motifs, predominantly angiotensin-converting enzyme (ACE) and dipeptidyl peptidase-IV (DPP-IV) inhibitory sequences.

Conclusion

Preserved mustard greens contain unique proteins associated with health benefits based on GO annotations, distinguishing their protein profiles from fresh mustard greens. This study provides insights into their functional properties, addressing concerns related to their consumption.
芥菜在全球越来越受欢迎,但腌制和酸洗等保存方法引起了人们对高钠含量和微生物安全的具体担忧。本研究对芥菜中有益健康的蛋白质进行了蛋白质组学分析。目的探讨新鲜和腌制芥菜中与健康益处相关的蛋白质谱。方法采用shotgun蛋白质组学联合LC-MS/MS对蛋白质进行鉴定,采用Welch’st检验进行统计学分析,并进行Benjamini-Hochberg错误发现率校正。使用Venn图可视化独特的蛋白质,使用基因本体(GO)数据库进行注释,并使用Sankey图映射到功能类别。通过计算机验证蛋白质稳定性和胃肠道消化来评估生物活性肽的释放。结果共鉴定出118个高信度蛋白,其中新鲜芥菜特有27个,腌制芥菜特有23个,腌制芥菜特有22个。新鲜芥菜中的独特蛋白质与碳水化合物、氨基酸和核苷酸代谢有关。腌制芥菜中含有与碳水化合物、脂质、甘油、维生素和辅助因子代谢有关的蛋白质,而腌制芥菜中含有与氨基酸、核苷酸、脂质和甘油代谢有关的蛋白质。硅酶切结果显示,约19 - 20%的肽片段含有生物活性基序,主要是血管紧张素转换酶(ACE)和二肽基肽酶- iv (DPP-IV)抑制序列。结论根据GO注释,保存的芥菜含有与健康有益的独特蛋白质,其蛋白质谱与新鲜芥菜不同。这项研究提供了对其功能特性的见解,解决了与消费相关的问题。
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引用次数: 0
Comparative analysis of curcuminoid content, antioxidant capacity, and target-specific molecular docking of turmeric extracts sourced from Thailand 泰国姜黄提取物的类姜黄素含量、抗氧化能力和靶向分子对接的比较分析
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-25 DOI: 10.1016/j.fochms.2025.100291
Shisanupong Anukanon , Komgrit Saeng-ngoen , Yawanart Ngamnon , Ngamnetr Rapan , Weerasak Seelarat , Pannraphat Takolpuckdee , Nisa Pakvilai , Yaiprae Chatree
Curcuminoids are the active compounds richest in turmeric rhizomes (Curcuma longa L.), comprising curcumin I, demethoxycurcumin (curcumin II), and bisdemethoxycurcumin (curcumin III). This study hypothesized that particular curcumin derivatives could mitigate oxidative stress and inflammation response by targeting specific inflammatory mediators. Therefore, this study aimed to quantify the concentrations of these curcuminoid forms in local turmeric extracts from Thailand. Subsequently, the study analyzed their in vitro antioxidant properties, alongside molecular docking and dynamics simulations targeting key oxidative stress- and inflammation-related proteins. Samples were collected from three representative cultivated areas in Thailand: the eastern, southern, and northern regions. The ethanolic extracts from all samples exhibited relatively high total curcuminoid content (eastern: 15.1 %, southern: 25.9 %, and northern: 31.6 % w/w in extract), as determined by high-performance liquid chromatography. Curcumin I emerged as the predominant variant, followed closely by curcumin II and III. The ethanolic extracts from the three cultural areas demonstrated significant antioxidant activity, as assessed by ORAC, FRAP, and DPPH assays. Among the three curcuminoids, curcumin III exhibited the strongest predicted binding affinities in molecular docking studies toward antioxidant and anti-inflammatory targets, including 5-LOX, NRF2, IKK1, NF-κB, and NOX4. Molecular dynamics simulations corroborated these findings, revealing that curcumin III formed the most stable complexes, particularly with IKK1, as indicated by low RMSD values (2–3 Å), and high hydrogen bond occupancy. Thus, curcumin III exhibits potential in silico inhibition of inflammatory mediators, supporting its promise as a natural compound for antioxidant and anti-inflammatory nutraceutical development.
姜黄素是姜黄根茎(Curcuma longa L.)中最丰富的活性化合物,包括姜黄素I、去甲氧基姜黄素(姜黄素II)和双去甲氧基姜黄素(姜黄素III)。本研究假设特定的姜黄素衍生物可以通过靶向特定的炎症介质来减轻氧化应激和炎症反应。因此,本研究旨在量化泰国当地姜黄提取物中这些姜黄素形式的浓度。随后,该研究分析了它们的体外抗氧化性能,以及针对关键氧化应激和炎症相关蛋白的分子对接和动力学模拟。样本采集自泰国三个具有代表性的种植区:东部、南部和北部地区。通过高效液相色谱法测定,所有样品的乙醇提取物均具有较高的姜黄素总含量(东部:15.1%,南部:25.9%,北部:31.6% w/w)。姜黄素I是主要的变体,其次是姜黄素II和III。通过ORAC、FRAP和DPPH检测,三个培养区的乙醇提取物显示出显著的抗氧化活性。在三种姜黄素中,姜黄素III在抗氧化和抗炎靶点(包括5-LOX、NRF2、IKK1、NF-κB和NOX4)的分子对接研究中表现出最强的预测结合亲和力。分子动力学模拟证实了这些发现,显示姜黄素III形成了最稳定的复合物,特别是与IKK1,正如低RMSD值(2-3 Å)和高氢键占用所表明的那样。因此,姜黄素III显示出对炎症介质的硅抑制潜力,支持其作为抗氧化和抗炎营养品开发的天然化合物的前景。
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引用次数: 0
Genetic and chemical analysis of olive oil produced by Greek olive cultivars: Linking genetic profiles with fatty acid composition and phenolic stability 希腊橄榄品种生产的橄榄油的遗传和化学分析:与脂肪酸组成和酚稳定性的遗传谱联系
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-25 DOI: 10.1016/j.fochms.2025.100292
Annia Tsolakou , Kostas Ioannidis , Sofia Lymperopoulou , Panagiotis Diamantakos , Georgios Kostelenos , Eleni Melliou , Prokopios Magiatis
This pilot study explores the relationship between the genetic profiles of olive cultivars and monounsaturated fatty acid (MUFA) content of their oils, with emphasis on oxidative stability and phenolic integrity. Our working hypothesis was that cultivar-specific genetic variation in MUFA content, directly affects the oxidative stability of key phenolics, particularly oleocanthal and oleacein. To examine the association between genetic clustering and oleic acid content, eighty Greek olive cultivars cultivated under controlled nursery conditions were genotyped using eleven genomic simple sequence repeat (SSR) markers, and their fatty acid composition was determined by 1H NMR. Phenolic stability was tested using oils with contrasting MUFA levels. Genetic analysis identified three clusters. Chemical cluster analysis, by dividing cultivars into three MUFA classes, revealed significant differences among divisions. Linking genetic and lipid profile groups highlighted notable overlap. This study reveals a clear experimental association between MUFA abundance in the olive matrix and its capacity to preserve phenolic integrity. By confirming the role of MUFA content in phenolic stability, our results provide a baseline reference for early-stage cultivar selection and for future breeding programs targeting enhanced olive oil quality.
这项初步研究探讨了橄榄品种的遗传谱与其油中单不饱和脂肪酸(MUFA)含量之间的关系,重点是氧化稳定性和酚完整性。我们的工作假设是MUFA含量的遗传变异直接影响关键酚类物质的氧化稳定性,特别是油酸和油酸。为了研究遗传聚类与油酸含量的关系,利用11个SSR标记对80个栽培条件下的希腊橄榄品种进行了基因分型,并用1H NMR对其脂肪酸组成进行了测定。用不同MUFA水平的油来测试酚稳定性。遗传分析确定了三个簇。化学聚类分析将品种划分为3个MUFA类,发现各类间差异显著。连接遗传和脂质谱组突出了显著的重叠。这项研究揭示了橄榄基质中MUFA丰度与其保持酚完整性的能力之间的明确实验关联。通过确认MUFA含量在橄榄油酚稳定性中的作用,我们的研究结果为早期品种选择和未来针对提高橄榄油品质的育种计划提供了基线参考。
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引用次数: 0
Omics landscapes in molecular mechanisms with Amomum tsaoko as an example 以砂木为例的分子机制组学景观研究
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-25 DOI: 10.1016/j.fochms.2025.100294
Dengke Fu , Yuanzhong Wang , Jinyu Zhang
To improve the quality and efficiency of cultivating Amomum tsaoko (AT), a non-model plant, it is crucial to understand the intrinsic molecular mechanisms underlying its growth. This review summarizes the significance of multi-omics in the study of plant molecular mechanisms and illustrates how multi-omics technology can solve the practical problems of non-model plants using AT as an example. In this review, we argue that nonlinear dimensionality reduction is more suitable for data organization in multi-omics because it is compatible with the nonlinear relationship between the components of systems biology. Subsequently, researchers have verified the strong vitality of multi-omics from three perspectives: the natural communication, breeding, and shade tolerance mechanisms of AT. Finally, we summarized some of the current commonly used plant genome databases and analyzed their utility for such research. We believe that our study makes a significant contribution to the literature because this review summarizes the multi-omics research process in detail, from data processing to application to the use of public databases, and illustrates the potential for the application of multi-omics with the example of a non-model plant, AT.
为了提高砂木这种非模式植物的栽培质量和效益,了解砂木生长的内在分子机制至关重要。本文综述了多组学在植物分子机制研究中的意义,并以AT为例说明了多组学技术如何解决非模式植物的实际问题。在这篇综述中,我们认为非线性降维更适合于多组学的数据组织,因为它与系统生物学组成部分之间的非线性关系是兼容的。随后,研究人员从AT的自然交往、育种和耐阴机制三个方面验证了多组学的强大生命力。最后,总结了目前常用的几种植物基因组数据库,并分析了它们在植物基因组研究中的应用价值。我们认为,我们的研究对文献做出了重大贡献,因为本文详细总结了多组学研究的过程,从数据处理到应用到公共数据库的使用,并以非模式植物AT为例说明了多组学的应用潜力。
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引用次数: 0
Integrated multi-omics reveals potential regulatory mechanisms of meat quality 综合多组学揭示了潜在的肉类品质调控机制
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-25 DOI: 10.1016/j.fochms.2025.100293
Jiajia Wang , Jiayu Liao , Kaisen Zhao , Na Shen , Yulin Xu , Jie Wang , Xianbo Jia , Wenqiang Sun , Songjia Lai
We hypothesized that the differences in meat quality stem from breed-specific regulation of muscle metabolic pathways. To explore the molecular mechanisms underlying meat quality differences between Liangshan cattle and Simmental crossbred cattle, we conducted metabolomic and transcriptomic analyses of the longissimus dorsi. Metabolomics revealed that Liangshan cattle exhibited higher l-carnitine levels, which may contribute to enhanced energy metabolism and improved meat quality, as well as a more favorable fatty acid composition. Integrated transcriptomic and metabolomic analysis suggested potential regulatory mechanisms: FASN may enhance fat deposition and tenderness by promoting butanoyl-CoA biosynthesis. Additionally, ALDOC, PFKL, PGAM1, and SDS may modulate citrulline metabolic flux, thereby influencing protein synthesis and promoting lipogenesis. These findings support our hypothesis by clarifying how coordinated gene–metabolite interactions influence meat quality. A potential regulatory model for the genetic-metabolic interaction of beef quality was established, providing a candidate framework for molecular breeding targeting beef quality traits.
我们假设肉质的差异源于对肌肉代谢途径的特定调节。为了探讨梁山牛和西门塔尔杂交牛肉质差异的分子机制,我们对背最长肌进行了代谢组学和转录组学分析。代谢组学研究表明,梁山牛具有较高的左旋肉碱水平,这可能有助于促进能量代谢和改善肉品质,并有利于脂肪酸组成。综合转录组学和代谢组学分析提示了潜在的调节机制:FASN可能通过促进丁烷酰辅酶a的生物合成来促进脂肪沉积和柔软。此外,ALDOC、PFKL、PGAM1和SDS可能调节瓜氨酸代谢通量,从而影响蛋白质合成和促进脂肪生成。这些发现通过阐明协调的基因-代谢物相互作用如何影响肉质来支持我们的假设。建立了牛肉品质遗传代谢相互作用的潜在调控模型,为针对牛肉品质性状的分子育种提供了候选框架。
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引用次数: 0
The potential regulation mechanism of lily extracts responds to AAPH induced oxidative stress in zebrafish 百合提取物对AAPH诱导的斑马鱼氧化应激的潜在调控机制
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-24 DOI: 10.1016/j.fochms.2025.100290
Haoran Shen , Hong Quan , Yixi Cai , Yazhou Lu , Peiyao Yu , Xiaozhong Lan , Xinbo Guo
This study investigated the antioxidant capacity and molecular mechanisms of lily bulb polyphenols using zebrafish (Danio rerio) embryos subjected to AAPH-induced oxidative stress. Two extraction methods—cold (CE) and hot (HE) water extraction—were compared. HE exhibited significantly higher total phenolic content (31 ± 4 %, p < 0.05) and polyphenol abundance (9.8 ± 0.6-fold increase, p < 0.05), particularly regaloside A and p-coumaric acid, than CE. Heat-assisted extraction of lily bulbs liberated more polyphenols (both in terms of content and variety), which translated into measurably greater antioxidant protection in vivo. In vivo assays revealed that both extracts improved embryo survival, restored SOD activity, and reduced ROS accumulation, lipid peroxidation, and cell death, with HE demonstrating superior efficacy. Mechanistically, regaloside A and p-coumaric acid reversed AAPH-induced dysregulation of key oxidative stress-related genes. Specifically, they downregulated keap1a, rela, erk2, and p38 expression while restoring nrf2, sod1, and sod2 levels, indicating modulation of Nrf2, NF-κB, and MAPK pathways. The data support the hypothesis that heating increases polyphenol yield and that lily polyphenols exert antioxidant effects via the stated pathways. These findings provide a mechanistic basis for developing lily-based antioxidant ingredients for functional foods.
本研究利用斑马鱼胚胎进行aaph诱导氧化应激,研究百合球茎多酚的抗氧化能力及其分子机制。比较了冷水(CE)和热水(HE)两种提取方法。HE的总酚含量(31±4%,p < 0.05)和多酚丰度(9.8±0.6倍,p < 0.05)显著高于CE,尤其是雷伽甲苷A和对香豆酸。热辅助提取百合球茎释放出更多的多酚(无论是含量还是种类),这在体内转化为更大的抗氧化保护。体内实验表明,两种提取物均能改善胚胎存活率,恢复SOD活性,减少ROS积累、脂质过氧化和细胞死亡,其中HE表现出更强的功效。在机制上,雷伽甲苷A和对香豆酸逆转了aaph诱导的关键氧化应激相关基因的失调。具体来说,他们下调了keap1a、rela、erk2和p38的表达,同时恢复了nrf2、sod1和sod2的水平,表明nrf2、NF-κB和MAPK通路受到了调节。数据支持加热增加多酚产量的假设,百合多酚通过上述途径发挥抗氧化作用。这些发现为开发百合为基础的功能性食品抗氧化成分提供了机理依据。
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引用次数: 0
Targeted metabolomic and transcriptomic reveal the regulatory network of ultrasound on polyphenol biosynthesis in tender coconut flesh during storage 靶代谢组学和转录组学揭示了超声对鲜嫩椰子果肉贮藏过程中多酚生物合成的调控网络
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-24 DOI: 10.1016/j.fochms.2025.100289
Cheng Fang , Xie Huang , Yanpei Huang , Ming Zhang , Haiming Chen , Weijun Chen , Qiuping Zhong , Jianfei Pei , Ying Lv , Rongrong He , Wenxue Chen
Coconut flesh, the solid endosperm, of coconut, which is rich in fat, protein and polyphenols. To investigate the impact of ultrasound treatment on the biosynthesis of polyphenols in tender coconut flesh during storage, the targeted metabolomic and transcriptomic analyses were employed. A total of 36 phenolic compounds were identified, of which catechin, epicatechin, gossypol and vanillic acid were the most abundant ones in ‘Hainan Tall’ coconut flesh. Ultrasound treatment maintained the levels of syringic acid, catechin and epicatechin, while suppressing the expression of most associated genes. Correlation analysis revealed that, downregulation expressions of FLS, 4CL2, F3′5′H, CHS2 and CHS3 decreased kaempferol, isoliquiritigenin and luteoloside content but increased catechin content. Furthermore, downregulation of CSE, DFR and CHI reduced contents of luteolin, whereas downregulation of LAR and ANS elevated the contents of catechin and epicatechin. Unraveling the effect of ultrasound on phenolic biosynthesis in the tender coconut flesh at metabolite and transcript levels provides technical and theoretical support for the high-value development and utilization of Hainan coconut resources.
椰子肉,椰子的固体胚乳,富含脂肪、蛋白质和多酚。为了研究超声处理对储存期间嫩椰子果肉中多酚生物合成的影响,采用了靶向代谢组学和转录组学分析。共鉴定出36种酚类化合物,其中儿茶素、表儿茶素、棉酚和香草酸在海南高椰子果肉中含量最多。超声治疗维持了丁香酸、儿茶素和表儿茶素的水平,同时抑制了大多数相关基因的表达。相关分析显示,下调FLS、4CL2、F3’5’h、CHS2和CHS3的表达可降低山奈酚、异槲皮素和木犀草苷含量,提高儿茶素含量。此外,CSE、DFR和CHI的下调降低了木犀草素含量,而LAR和ANS的下调提高了儿茶素和表儿茶素的含量。从代谢物和转录物水平揭示超声对嫩椰子果肉酚类生物合成的影响,为海南椰子资源的高价值开发利用提供技术和理论支持。
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引用次数: 0
Proteomic insights into collagen remodeling of the calipash in Chinese soft-shelled turtle (Pelodiscus sinensis) under Aeromonas hydrophila challenge: Implications for nutritional quality and oxidative stress response 在嗜水气单胞菌胁迫下中华软壳龟(Pelodiscus sinensis)发质胶原重塑的蛋白质组学研究:营养品质和氧化应激反应的意义
IF 4.7 Q2 FOOD SCIENCE & TECHNOLOGY Pub Date : 2025-08-20 DOI: 10.1016/j.fochms.2025.100288
Jiaxiang Luo, Zilian Deng, Keye Ru, Juntao Zhu, Ji Yu, Guoying Qian, Caiyan Li
The calipash, a collagen-rich tissue in Pelodiscus sinensis, undergoes structural degradation during Aeromonas hydrophila infection, compromising its economic value. This study investigates the underlying collagen alterations. Turtles were challenged with A. hydrophila, and samples were collected at 0 h, 6 h, 1d, 3d, 6d, and 10d post-infection. Results showed progressive collagen degradation, peaking at 10d. Early infection increased collagen content, type I collagen proportion, and collagen-related gene expression, but these declined over time. Essential amino acids decreased, while non-essential amino acids (e.g., glycine, proline) increased. iTRAQ proteomics identified 517 differentially expressed proteins (227 up-, 290 down-regulated), including collagen metabolism regulators (ITGB4, TIMP2, LTBP1 up; COL6A6, FKBP7, COL28A1 down). Protein network analysis revealed ECM stabilization and oxidative stress regulation balances collagen turnover. These findings indicated that P. sinensis modulates collagen biosynthesis and degradation under A. hydrophila stress, altering collagen structure and mitigating oxidative damage.
在嗜水气单胞菌感染过程中,胭脂鱼富含胶原蛋白的组织会发生结构降解,从而降低其经济价值。这项研究调查了潜在的胶原蛋白改变。分别于感染后0 h、6 h、1d、3d、6d和10d采集标本。结果显示胶原蛋白降解进展,在10d达到峰值。早期感染增加了胶原含量、I型胶原比例和胶原相关基因表达,但随着时间的推移,这些都有所下降。必需氨基酸减少,而非必需氨基酸(如甘氨酸、脯氨酸)增加。iTRAQ蛋白组学鉴定出517个差异表达蛋白(227个上调,290个下调),包括胶原代谢调节蛋白(ITGB4、TIMP2、LTBP1上调;COL6A6、FKBP7、COL28A1下调)。蛋白质网络分析显示ECM稳定和氧化应激调节平衡胶原蛋白周转。这些结果表明,在嗜水单胞菌胁迫下,中华单胞菌调节胶原合成和降解,改变胶原结构,减轻氧化损伤。
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Food Chemistry Molecular Sciences
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