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中国精品科技期刊2020
橙汁主要营养成分及温度处理对脂环酸芽胞杆菌生长的影响[J]. 食品工业科技, 2013, (10): 299-303. DOI: 10.13386/j.issn1002-0306.2013.10.066
引用本文: 橙汁主要营养成分及温度处理对脂环酸芽胞杆菌生长的影响[J]. 食品工业科技, 2013, (10): 299-303. DOI: 10.13386/j.issn1002-0306.2013.10.066
Effect of nutritional ingredient and temperature-treatment of orange juice on the growth of Alicyclobacillus[J]. Science and Technology of Food Industry, 2013, (10): 299-303. DOI: 10.13386/j.issn1002-0306.2013.10.066
Citation: Effect of nutritional ingredient and temperature-treatment of orange juice on the growth of Alicyclobacillus[J]. Science and Technology of Food Industry, 2013, (10): 299-303. DOI: 10.13386/j.issn1002-0306.2013.10.066

橙汁主要营养成分及温度处理对脂环酸芽胞杆菌生长的影响

Effect of nutritional ingredient and temperature-treatment of orange juice on the growth of Alicyclobacillus

  • 摘要: 本文研究了橙汁主要营养成分和加工中温度处理等因素对两种引起已灭菌果汁腐败的主要病原微生物酸土脂环酸芽孢杆菌(Alicyclobacillus acidoterrestris)和酸热脂环酸芽孢杆菌(Alicyclobacillus acidocaldarius)生长的影响。结果表明,柠檬酸、蔗糖、矿质元素(钙、镁和钾元素)等橙汁中的主要营养成分在一定浓度范围内均可以促进两种脂环酸芽孢杆菌的生长。酸热脂环酸芽孢杆菌和酸土脂环酸芽孢杆菌在蔗糖浓度分别高于25%和20%时,生长受到抑制。当环境中钾浓度高于1000mg/L时,酸土脂环酸芽孢杆菌生长的生长受到抑制。在不同橙汁含量的饮料中,橙汁原汁最适合两种脂环酸芽孢杆菌的生长,而浓缩果汁中两种菌的生长量最少。温度处理实验表明,两种脂环酸芽孢杆菌分别经(-20、4、30、50、70、90℃)处理30min后,仍能保持良好的生长状态。当菌体经121℃处理30min时,生长几乎完全受到抑制。因此,橙汁饮料及橙汁原汁更容易感染酸土脂环酸芽孢杆菌和酸热脂环酸芽孢杆菌;通过巴氏杀菌很难彻底杀灭橙汁中的脂环酸芽孢杆菌,有必要寻求新型非热杀菌方法来控制橙汁中脂环酸芽孢杆菌。 

     

    Abstract: The objective of this study was to evaluated the effects of nutritional ingredient, concentration and temperature treatment of orange juice on the growth of Alicyclobacillus acidoterrestris and Alicyclobacillus acidocaldarius, which associated with the spoilage of pasteurized fruit juice. The results showed citric acid, sugar, mineral element (calcium, magnesium, potassium) could increase the growth of A.acidoterrestris and A. acidocaldarius in a certain concentration range. While the growth of A.acidoterrestris and A.acidocaldarius would be inhibited when sugar content in the medium was above 20% and 25% separately. The medium with potassium content above 1000mg/L was not good for the microbial growth. Among the different concentration orange juice drink, orange juice was most suitable for the growth of the microbe. The biomass of the microbe in the orange juice concentration was least. In the temperature treatment, the microbe could maitain normal growth at the range of (-20, 4, 30, 50, 70, 90℃) for 30min, and it was nearly inhibited completely at the 121℃, 30min.According to the results, it would be concluded the orange juice drink was suitable for the growth of the A.acidoterrestris and A.acidocaldarius. Temperature treatment was not an effective way to control the A . acidoterrestris , and it was necessary to find the new non-thermal sterilization method to control the A. acidoterrestris in the orange juice.

     

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