Evaluation of Factors Affecting Antimicrobial Activity of Bacteriocin from Microencapsulated in Alginate-Gelatin Capsules and Its Application on Pork Meat as a Bio-Preservative.

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2019
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Abstract
Antimicrobial compounds from traditional fermented foods have shown activity against a wide range of pathogen and spoilage microorganisms for several years. In this study, a Lactic acid bacteria (LAB), isolated from Vietnamese traditional fermented yogurt ( SC01), was encapsulated in alginate-gelatin (ALG-GEL) and the effect of incubation temperature, medium pH and surfactants were assessed. The aims of this research were to evaluate antimicrobial activity of bacteriocin produced by SC01. Another aim the research was to study the quality of pork meat treated with its Bacteriocin in 2 h as a bio-preservative at different storage times (0 h, 12 h, 24 h and 48 h) in room temperature, compared to control (treated with salt 40.0%). The antimicrobial activity of SC01 was identified through the inhibition rate of five indicator organisms, including , sp., , , and by co-culture method. The results showed that SC01 microencapsulated in ALG-GEL (2.5% alginate and 6.0% gelatin, /) and 3.0% bacteria supplied into modified MRS medium (MRSOPTSC01) produced highly active compound inhibited the growth of indicator organisms at a density of 10⁴⁻10⁸ CFU/mL. Antibacterial compounds were highly active in a treatment at 80 °C; not to be affected by pH; affected by surfactant as Ethylenediaminetetraacetic acid (EDTA), Sodium dodecyl sulfate (SDS), and Tween. Moreover, LAB obtained from this study show the potent Bacteriocin in its usage as a preservative in food.
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Authors Le, Ngoc Thuy Trang;Bach, Long Giang;Nguyen, Duy Chinh;Le, Tran Hong Xuan;Pham, Khanh Hung;Nguyen, Dai Hai;Hoang Thi, Thai Thanh;
Journal International journal of environmental research and public health
Year 2019
DOI
E1017
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Keywords Keywords not found

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