Biosynthesis of selenium nanoparticles of Monascus purpureus and their inhibition to Alicyclobacillus acidoterrestris

被引:32
作者
Sun, Yuhan [1 ,3 ]
Shi, Yiheng [1 ,3 ]
Jia, Hang [1 ,3 ]
Ding, Hao [1 ,3 ]
Yue, Tianli [1 ,2 ,3 ]
Yuan, Yahong [1 ,3 ]
机构
[1] Northwest A&F Univ, Coll Food Sci & Engn, Yangling 712100, Shaanxi, Peoples R China
[2] Northwest Univ, Coll Food Sci & Techonol, Xian 710069, Peoples R China
[3] Minist Agr, Lab Qual & Safety Risk Assessment Agroprod Yangli, Yangling 712100, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Monascus purpureus; Selenium nanoparticles; Alicyclobacillus acidoterrestris; Antibacterial activity; Mechanism; ELEMENTAL SELENIUM; NANO-SELENIUM; ESSENTIAL OIL; INACTIVATION; TEMPERATURE; REDUCTION; SILVER; CELLS;
D O I
10.1016/j.foodcont.2021.108366
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Alicyclobacillus acidoterrestris is a kind of acid-resistant and heat-resistant gram-positive bacteria which can produce undesirable odors, causing fruit juice spoilage. However, conventional industrial sterilization methods cannot kill this bacterium. Antimicrobial nanoparticles could serve as promising antibacterial agents to inhibit A. acidoterrestris. In this work, selenium nanoparticles (SeNPs) were produced in the fermentation process of a selenium-enriched strain Monascus purpureus 2322 which domesticated in laboratory and their antibacterial activity against A. acidoterrestris was investigated. The as synthesized SeNPs was around spherical with a diameter of approximately 48 nm. Moreover, SeNPs could severely damage the integrity of bacterial cell, resulting in the leakage of cellular contents. Therefore, A. acidoterrestris was inhibited in the presence of SeNPs. These results indicate that the generation of SeNPs by fermentation provides a new efficacious way for developing antibacterial agent against A. acidoterrestris.
引用
收藏
页数:8
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