کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4564278 | 1330932 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Properties and safety aspects of Enterococcus faecium strains isolated from Chungkukjang, a fermented soy product
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
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چکیده انگلیسی
Enterococcus faecium isolated from Chungkukjang, a Korean traditional fermented soybean food was studied for their functional characteristics as potential new starter culture and safety. Microbiological analysis of ripened Chungkukjang revealed the presence of an enterococcal population in numbers of up to 6Â log CFU per g. Seven isolates with higher activity were selected for further study and the strains were identified as E. faecium. The E. faecium strains showed resistance against simulated gastrointestinal conditions such as acidic environment and the presence of bile salts. These strains also showed bile salt hydrolase activity but neither hemolytic activity nor virulence determinant such as gelE and efaAfm. All strains were susceptible to glycopeptides and lacked potential as vancomycin-resistant enterococci (VRE). Two strains, S2C10 and S2C11, showed inhibited the viability of Listeria monocytogenes in vitro. The ability was probably due to the production of bacteriocin. The lipase activity influenced the stability, while either acidic condition or high temperature did not play a significant role in the activity of the antimicrobial substances. The strains also produced thermostable listericidal antimicrobial substance. For this reason, the strains could be used as selected starters or protective cultures in soybean fermented food production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Food Science and Technology - Volume 41, Issue 5, June 2008, Pages 925-933
Journal: LWT - Food Science and Technology - Volume 41, Issue 5, June 2008, Pages 925-933
نویسندگان
Mi Young Yoon, Young Jun Kim, Han-Joon Hwang,