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http://dx.doi.org/10.5352/JLS.2005.15.1.066

Antimicrobial Effect of Grapefruit Seed Extract on Preservation for Carrot and Spinach  

Kim Mi-Kyung (Division of Food Science and Biotechnology, Kyungnam University)
Park Mi-Suk (Division of Food Science and Biotechnology, Kyungnam University)
Choi Sun-Uk (Division of Food Science and Biotechnology, Kyungnam University)
Park Hae-Ryong (Division of Food Science and Biotechnology, Kyungnam University)
Hwang Yong-Il (Division of Food Science and Biotechnology, Kyungnam University)
Publication Information
Journal of Life Science / v.15, no.1, 2005 , pp. 66-70 More about this Journal
Abstract
In order to preserve the freshness of vegetables and to reduce the rate of decay, grapefruit seed extract (GFSE), a natural microorganism growth inhibiting agent, was applied during the preservation process of heat treated carrot and spinach. To investigate synergic effect of heat and GFSE treatment, carrots and spinaches were treated with or without 10 ppm of GFSE at $70^{\circ}C$. Surface color, texture and microbial counts of the samples were measured during storage at $4^{\circ}C$. GFSE showed an effective inhibitory activity against aerobic bacteria and yeast which might be involved in the decay of vegetables. Heat treatment at 2 min at $70^{\circ}C$ could also well preserve the color and texture of the vegetables. From the results, optimal concentrations of GFSE were 10 ppm and 50 ppm with heat treatment of 2 min $70^{\circ}C$ for the growth inhibitory effect to aerobic bacteria and yeast and preservation of color and texture.
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