Antimicrobial activities of high molecular weight water-soluble chitosans against selected gram-negative and gram-positive foodborne pathogens

被引：10

作者：

Rubio, Nancy Katherine ^{[1
]}

Quintero, Rita ^{[1
]}

Fuentes, Jose ^{[1
]}

Brandao, Jose ^{[1
]}

Janes, Marlene ^{[1
]}

Prinyawiwatkul, Witoon ^{[1
]}

机构：

[1] Louisiana State Univ, Ctr Agr, Sch Nutr & Food Sci, Baton Rouge, LA 70803 USA

来源：

INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY | 2018年 / 53卷 / 10期

基金：

美国食品与农业研究所;

关键词：

Antimicrobial properties; chitosan; foodborne pathogens; high molecular weight chitosan; water-soluble chitosan; ANTIBACTERIAL ACTIVITY; SALMONELLA-TYPHIMURIUM; SHELF-LIFE; IN-VITRO; CHITIN; SHRIMP; OLIGOSACCHARIDES; DEACETYLATION; OPTIMIZATION; COMBINATION;

D O I：

10.1111/ijfs.13827

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Antimicrobial activities of high molecular weight water-soluble chitosans (HMWWS) against selected Gram-negative and Gram-positive foodborne pathogens (initial inoculation of ca. 6.5Log CFUmL(-1)) were evaluated. Chitosans with 789kDa and/or 1017kDa were dissolved in aspartic acid (AS) to obtain 1-4% w/v solutions. Among HMWWS, only 4% 789 kDa AS chitosan reduced E.coli counts by 2 Log CFUmL(-1) from 7.33 at 0 h to 5.16 Log CFUmL(-1) at 96h, and they were not effective against S. Typhimurium. Depending on the concentrations, HMWWS completely inhibited V.cholerae, V.vulnificus and V.parahaemolyticus as well as B.cereus and L.monocytogenes after 48h or 96h of incubation. Compared with the control (no HMWWS), 2% or 3% 1017kDa AS chitosans showed about 3 Log CFUmL(-1) lower (4.72-4.86 vs. 7.71) for S.aureus at 96 h of incubation.

引用

页码：2349 / 2356

页数：8

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