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題名 | Effect of Nisin Treatment and Modified Atmosphere Packaging on the Microbial Flora and Gas Composition of Raw Pork Tenderloins=乳酸鏈球菌素及調氣包裝對生豬肉中微生物菌相及氣體成分變化之影響 |
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作者 | 方繼; 林洛瑋; |
期刊 | 食品科學 |
出版日期 | 19940400 |
卷期 | 21:2 1994.04[民83.04] |
頁次 | 頁153-166 |
分類號 | 463.7 |
語文 | eng |
關鍵詞 | 調氣包裝; 乳酸鏈球菌素; 豬肉; 頂隙氣體; 微生物菌相; Modified atmosphere packaging; Nisin; Pork; Headspace gases; Microbial flora; |
中文摘要 | 本研究探討生豬肉貯存於調氣包裝且經乳酸鏈球菌素(nisin)處理後其微生物菌相及氣體成分之變化。生豬肉先以人為接種方式接入每克樣品含103CFU之李斯特菌(Listeria monocytogenes),再經不同濃度之乳酸鏈球菌素(0, 104,及5×104IU/ml)處理後以PET/A1/PE包裝袋包裝,所使用之氣體為100%空氣、100%CO2、及80%CO2/20%空氣,包裝後於4℃下貯存30天或於20℃下貯存10天。結果顯示於調氣包裝中(100%CO2、及80%CO2/20%空氣)樣品之總生菌數低於空氣貯存之菌數。腸內桿菌科菌數、酵母菌數及黴菌數變化亦有同樣之趨勢,且上述各類菌之生長不受乳酸鏈球菌素之影響。對乳酸菌而言,其於調氣包裝中之菌數高於其於空氣貯存中之菌數,且乳酸鏈球菌素能抑制其生長。調氣包裝無法抑制李斯特菌之生長,然而使用乳酸鏈球菌素則能降低其菌數,且此一效應隨乳酸鏈球菌素、二氧化碳濃度之增加及溫度之下降而增加。而調氣包裝中氣體成分之變化主要受微生物生長之影響。 |
英文摘要 | The influence of nisin combined with MA storage on the microbial flora and gas composition of raw pork tenderloin cuts were investigated. The porks were artificially contaminated with Listeria rnonocytogenes Scott A at an initial population of approximately 103 CFU/g. The porks were decontaminated with various concentration of nisin (0, 104, and 5×104IU/ml) and packed in PET/ A1/PE pouches with 100% air, 100% CO2, and 80% CO2/20% air and stored at 20 and 4℃ for 10 and 30 days, respectively. Total aerobic counts of the porks stored in MA (100% CO2 and 80% CO2/20% air) were lower than counts of air-packaged porks. Same patterns were found in Enterobacteriaceae, and yeast and mold counts. The changes of total aerobic counts, Enterobacteriaceae, and yeast and mold counts were not influenced by nisin. Lactio acid bacteria grew better under MA storage than in air storage, while nisin inhibit the growth of this group of microorganism. The modified atmosphere packaging used in this investigation allows L. monoeytogenes to increase in the absence of nisin. However, the population of L. monocytogenes on the loins treated with nisin (104 and 5×104) and stored under air or MA at 4 and 20℃ was lower than the initial number of this pathogen. The antimicrobial effect of nisin increased with increasing concentrations of nisin. The inhibitory effect of nisin combined with MAP to L. monoeytogenes was also increasingly effective with decreasing temperature and increasing carbon dioxide. The principal factor influencing change in the headspace gases uader the conditions of this investigation was the growth of microorganism. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。