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Antimicrobial Activity and Food Storage of LDPE Silica Film Containing Antimicrodial Compounds  

김현수 (계명대학교 자연과학대학 미생물학과)
성림식 (계명대학교 자연과학대학 미생물학과)
이인선 (계명대학교 자연과학대학 식품가공학과)
Publication Information
KSBB Journal / v.17, no.4, 2002 , pp. 350-356 More about this Journal
Abstract
Low density polyethylene(LDPE) film was fabricated with the addition of benzoic acid, or/and JP which contained water-soluble silica adsorbed a natural antimicrobial compounds. The used antimicrobial compounds were isolated from culture broths of methylotropic actinomycetes strains MO-16 and MO-17 which was newly isolated from soils. An antimicrobial compound retained antimicrobial activity after heat treatment at 121$^{\circ}C$ for 5 min. JP, which obtained from Japan as a antimicrobial agent, showed antimicrobial activity in the concentration of 100 mg/mL. The silica LDPE film revealed the growth inhibition of total aerobic bacteria in packaged minced pork compared with commercial film and of E. coil on a contained agar plate. In the storage testing of various packaged foods at room temperature for 30 days, the film showed excellent preservation compared with commercial film in case of small tomato and Agaricus bisporus.
Keywords
Antimicrobial compounds; water-soluble silica; methylotropic actinomycetes; LDPE film; food storage;
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