http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전통 발효식초에서 분리한 Lactobacillus harbinensis VF의 프로바이오틱스 활성
정지안 ( Ji An Joung ),유지영 ( Ji-young You ),이성실 ( Sung Sil Lee ),최준호 ( Joon Ho Choi ) 한국산업식품공학회 2023 산업 식품공학 Vol.27 No.2
A novel L. harbinensis VF was isolated from fermented vinegar and identified through biochemical characteristics and 16S rRNA sequencing analysis. Characteristics of probiotics were studied for acid and bile salt tolerances, hemolytic activity, antibiotic resistance, antimicrobial activity, cell surface hydrophobicity, and aggregation. The survival rates of the isolate were maintained at 68.9% and 95.6% after 3 h incubation at pH 2.0 and 2.5 and were over 74% at bile salt concentrations of 0.3% and 0.5%. The hemolytic activity was confirmed to be γ-hemolysis. The isolate showed broad antibiotics-resistance in over 12 antibiotics except for trimethoprim/sulfamethoxazole, compared to L. plantarum (KCTC 3108), used as control, and previously reported L. harbinensis. Antimicrobial activity was confirmed against pathogens, B. cereus, E. coli O157:H7, L. monocytogenes, and S. typhimurium, except S. aureus, and it was attributed to produced organic acids (low pH). The hydrophobicity for xylene and chloroform were 16.7% and 20.4%, respectively, lower than those of L. plantarum (41.2% & 49.9%). The auto-aggregation and co-aggregation with pathogens were 83.8% and 49.2-87.6% at 24 h incubation, respectively, higher than those of L. plantarum. From this study, L. harbinensis VF is likely to be used as a probiotic strain and is a strong candidate for commercial application.