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KMID : 0380619940260020167
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Korean Journal of Food Science and Technology
1994 Volume.26 No. 2 p.167 ~ p.171
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Quality Stability of Spinach Powder As Influenced by Microbial Decontamination Treatment
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조한옥/Cho, Han Ok
최종욱/권중호/변명우/Choi, Jong Uck/Kwon, Joong Ho/Byun, Myung Woo
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Abstract
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With a view to improving microbiological quality of spinach powder which is currently used for convenience food production, comparative efficacy of ethylene oxide(EO) fumigation and gamma irradiation was investigated by determining microbial populations and physicochemical quality for treated samples. Spinach powder was contaminated with various microorganisms ranging from 10²/g to 10⁴/g, which composed of thermophiles, acid tolerant bacteria, fungi, coliforms, etc. Microorganisms contaminated were destroyed up to undetected levels by gamma irradiation at below 7 kGy, showing the radiosensitivity D_(10) 2.93 kGy on total aerobic bacteria. Ethylene oxide fumigation, however, was found unsatisfactory for physicochemical quality as well as microbial decontamination of the sample. It has been generally observed that influence of optimum-dose range of irradiation on the physicochemical qualities was insignificant, which was proved in the organoleptic evaluations on the stored sample.
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KEYWORD
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