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乳业科学与技术 ›› 2019, Vol. 42 ›› Issue (6): 21-24.DOI: 10.15922/j.cnki.jdst.2019.06.004

• 加工工艺 • 上一篇    下一篇

冲调温度对婴儿配方乳粉中益生菌存活率的影响

贾宏信, 揭良, 罗妮   

  1. 光明乳业股份有限公司乳业研究院, 上海乳业生物工程技术研究中心, 乳业生物技术国家重点实验室, 上海 200436, 上海商学院酒店管理学院, 上海, 200235
  • 出版日期:2019-11-01 发布日期:2021-11-09
  • 基金资助:
    “十三五”国家重点研发计划“食品安全关键技术研发”专项（2018YFC1604205）； 上海市科学技术委员会科研计划项目（17391901100）；上海乳业生物工程技术研究中心项目（19DZ2281400）

Effect of Reconstitution Temperature on Survival Rate of Probiotics in Infant Formula

JIA Hongxin, JIE Liang, LUO Ni   

  1. (1.Shanghai Engineering Research Center of Dairy Biotechnology, State Key Laboratory of Dairy Biotechnology, Dairy Research Institute, Bright Dairy and Food Co. Ltd., Shanghai 200436, China; 2.College of Hotel Management, Shanghai Business School, Shanghai 200235, China)
  • Online:2019-11-01 Published:2021-11-09

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摘要： 在不同温度（40、50、60、70 ℃）下对含益生菌的婴儿配方乳粉进行冲调，分析冲调温度和冲调方式 （温水直接冲调或温/凉水两步冲调）对乳粉中益生菌存活率的影响，同时分析婴儿配方乳粉冲调液5 ℃冷藏24 h 期间的微生物变化。结果表明：冲调温度越高，婴儿配方乳粉中益生菌的存活率越低，冲调温度相同时，温/凉 水两步冲调婴儿配方乳粉的益生菌存活率大于温水直接冲调，40 ℃和50 ℃冲调有利于益生菌的存活（存活率＞ 60%）；婴儿配方乳粉冲调液5 ℃冷藏可以有效保证益生菌的存活，并有利于乳粉中其他微生物的控制；含益生菌 的婴儿配方乳粉建议冲调温度控制在40～50 ℃，以保证乳粉中益生菌的存活。

关键词: 冲调温度；益生菌；存活率；婴儿配方乳粉

Abstract: Infant formula (IF) containing probiotics was reconstituted at different temperatures (40, 50, 60 and 70 ℃) in order to analyze the effects of reconstitution temperature and methods (direct reconstitution in warm water and sequential reconstitution in warm and cool water) on the survival rate of probiotics. At the same time, microbial change in reconstituted IF were measured during storage at 5 ℃ for up to 24 h. The results showed that as the reconstitution increased, the survival rate of probiotics decreased. At the same reconstitution temperature, the second reconstitution method resulted in a significantly higher survival rate than did the first one. Reconstitution temperatures of 40 and 50 ℃ were beneficial to the survival of probiotics (survival rate > 60%). Storage at 5 ℃ ensured effectively the survival of the probiotics in reconstituted IF while controlling the growth of other microorganisms. In conclusion, IF containing probiotics is recommended to be reconstituted at 40–50 ℃ so as to ensure the survival of probiotics in the reconstituted IF.

Key words: reconstitution temperature; probiotics; survival rate; infant formula

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