广东省农业科学院机构知识库

Unveiling biotransformation of free flavonoids into phenolic acids and Chromones alongside dynamic migration of bound Phenolics in Lactobacillus-fermented lychee pulp

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文献类型：外文期刊

作者： Huang, Guitao ¹ ; Zhang, Mingwei ¹ ; Zhang, Shuai ² ; Wang, Jidongtian ² ; Zhang, Ruifen ² ; Dong, Lihong ² ; Huang, Fei ² ; Su, Dongxiao ³ ; Deng, Mei ² ;

作者机构： 1.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China

2.Guangdong Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc,Sericultural & Agr, Guangzhou 510610, Peoples R China

3.Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Peoples R China

关键词： Lychee; Flavonoid; Biotransformation; Lactobacillus; Fermentation

期刊名称：FOOD CHEMISTRY （影响因子：9.8；五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2024 年 457 卷

页码：

收录情况： SCI

摘要： Lactobacillus strains have emerged as promising probiotics for enhancing the bioactivities of plant-based foods associated with flavonoid biotransformation. Employing microbial fermentation and mass spectrometry, we explored flavonoid metabolism in lychee pulp fermented separately by Lactiplantibacillus plantarum and Limosilactobacillus fermentum. Two novel metabolites, 3,5,7-trihydroxychromone and catechol, were exclusively identified in L. plantarum-fermented pulp. Concomitant with consumption of catechin and quercetin glycosides, dihydroquercetin glycosides, 2,4-dihydroxybenzoic acid and p-hydroxyphenyllactic acid were synthesized by two strains through hydrogenation and fission of C-ring. Quantitative analysis revealed that bound phenolics were primarily located in water-insoluble polysaccharides in lychee pulp. Quercetin 3-O-rutinoside was partially liberated from water-insoluble polysaccharides and migrated to water-soluble polysaccharides during fermentation. Meanwhile, substantial accumulations in short-chain fatty acids (increased 1.45 to 3.08-fold) and viable strains (increased by 1.97 to 2.00 Log10 CFU/mL) were observed in fermentative pulp. These findings provide broader insight into microbial biotransformation of phenolics and possible guidance for personalized nutrition.

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