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Updated: Feb 8, 2026

Light-Controlled Fermentations for Microbial Chemical and Protein Production
Published on: March 22, 2022
Selenium biofortification modulates the structure, digestion, and microbial fermentation characteristics of tea
Zhiliang Jiang1, Fuqing Bai1, Wei Guo1
1State Key Laboratory of Tea Plant Germplasm Innovation and Resource Utilization, Anhui Agricultural University, Hefei 230036, Anhui, PR China; College of Food and Nutrition, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei 230036, Anhui, PR China; Anhui Provincial Joint Construction Key Laboratory of Industrial New-Style Tea Beverage Green Manufacturing, Anhui Agricultural University, Hefei, PR China.
None:
Selenium (Se) biofortification plays a vital role in addressing dietary selenium deficiencies and enhancing the nutritional value of plant-based foods. This study aimed to elucidate the effects of foliar selenium biofortification on the structural and digestive properties of tea proteins. Result showed that Se incorporation significantly altered the secondary structure of tea proteins, characterized by increased proportions of α-helix and β-sheet and a reduced β-turn content. Amino acid profiling showed that selenium-enriched tea proteins (Se-TPs) exhibited a higher total content of essential amino acids. In vitro fermentation analysis demonstrated that Se-TPs promoted the production of lactic acid and short-chain fatty acids. Moreover, Se-TPs selectively enriched beneficial taxa such as Prevotella and Streptococcus salivarius, while significantly suppressing the intestinal pathogen Shigella. These findings provide novel insights into the structure-function-microbiota relationships of selenium-enriched tea proteins and highlight their potential as functional food ingredients for gut health promotion and selenium supplementation.
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