Probiotic Potential and Wide-spectrum Antimicrobial Activity of Lactic Acid Bacteria Isolated from Infant Feces

被引：27
作者：
Wang, Xing [1 ]
Wang, Weidong [2 ]
Lv, Haoxin [3 ]
Zhang, Hua [1 ,4 ]
Liu, Yuan [1 ]
Zhang, Miao [1 ]
Wang, Yanping [1 ]
Tan, Zhongfang [1 ]
机构：
[1] Zhengzhou Univ, Sch Agr Sci, Henan Key Lab Ion Beam Bioengn, Zhengzhou, Peoples R China
[2] Xinxiang Med Univ, Affiliated Hosp 3, Xinxiang, Henan, Peoples R China
[3] Henan Univ Technol, Sch Food Sci & Technol, Zhengzhou, Peoples R China
[4] Henan Univ Anim Husb & Econ, Sch Food & Biol Engn, Zhengzhou, Peoples R China
来源：
PROBIOTICS AND ANTIMICROBIAL PROTEINS | 2021年 / 13卷 / 01期
关键词：
Infant feces; Lactic acid bacteria; Antimicrobial activity; Probiotics; IN-VITRO; LACTOBACILLUS-PLANTARUM; ANTIBIOTIC-RESISTANCE; STRAINS; FOODS; SUSCEPTIBILITY; IDENTIFICATION; ENTEROCOCCI; FERMENTUM;
D O I：
10.1007/s12602-020-09658-3
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
In this study, we aimed to characterize lactic acid bacteria strains derived from infants' feces, to evaluate the probiotic potential and explore the wide-spectrum antimicrobial activity. Of 800 isolates, 20 inhibited the growth of enterotoxigenic Escherichia coli K88 and Salmonella enterica ATCC 13076. On the basis of 16S rRNA sequence analysis, the 20 isolates were assigned to Lactobacillus casei (7), Lactobacillus paracasei (2), Lactobacillus plantarum (4), Lactobacillus rhamnosus (2), Enterococcus avium (3), Enterococcus faecium (1), and Enterococcus lactis (1) species. In addition, 12 strains with high antimicrobial activity were investigated for the presence of probiotic properties such as physiological-biochemical characteristics, antimicrobial susceptibility, hemolytic activity, hydrophobicity, and aggregation activity. Wide-spectrum antimicrobial activity analysis revealed that approximately all tested strains inhibited the ten pathogens, and four strains (ZX221, ZX633, ZX3131, and ZX3875) had good probiotic properties and survived after being exposed to simulated gastrointestinal tract conditions. Moreover, we investigated the influence of pH on the wide-spectrum antimicrobial activity and found that four strains inhibited most pathogens at pH 4.5 and pH 5, whereas only ZX633 had an inhibitory effect on Bacillus subtilis ATCC 6633 and Micrococcus luteus ATCC 4698 at pH 5.5. Overall, Lact. casei ZX633 had wide-spectrum antimicrobial activity and could be considered a potential probiotic.
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页码：90 / 101
页数：12
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