食品科学 ›› 2013, Vol. 34 ›› Issue (4): 104-108.

• 工艺技术 • 上一篇    下一篇

牛乳超滤及工艺条件改变对切达干酪促熟及其品质的影响

孙卓1,刘鹭2,张佳程3,孔凡丕4,李红娟5,吕加平4   

  1. 1. 光明乳业股份有限公司技术中心
    2. 中国农业科学院农产品加工所
    3. 青岛农业大学
    4. 中国农业科学院农产品加工研究所
    5.
  • 收稿日期:2011-11-30 修回日期:2013-01-14 出版日期:2013-02-25 发布日期:2013-01-29
  • 通讯作者: 孙卓 E-mail:zhuosun0532@163.com

Effects of Process Condition on Ripening and Quality of Ultrafiltration Cheddar Cheese

  • Received:2011-11-30 Revised:2013-01-14 Online:2013-02-25 Published:2013-01-29
  • Contact: Zhuo SUN E-mail:zhuosun0532@163.com

摘要: 采用超滤技术对牛乳进行浓缩预处理,再制作干酪。选择不同升温时间、成熟温度,研究其对切达干酪的组成和产率、蛋白质分解以及质构的影响。结果表明,延长升温时间有利于干酪产率提高。通过测定各干酪pH 4.6 SN及12%TCA 可溶性氮质量分数发现,提高成熟温度均能加快实验组干酪的蛋白质分解。经质构仪测定由超滤浓缩乳制作的干酪弹性、凝聚性、粘性差异均不显著,而提高温度使各干酪质地的弹性、凝聚性、粘性都有所降低,且差异显著(P<0.05),与其在同等条件下的蛋白质水解度有一定关系。结合感官评定,提高成熟温度后,苦味的出现使干酪的滋味和气味的整体评分降低;同时提高成熟温度也降低质地的整体评分,其干酪硬度降低,咀嚼性较差。

Abstract: Cheese were made with ultrafiltrated and microfiltrated milk. The influence of different heating time, mature temperature on the composition, proteolysis and texture of cheddar cheese were studied. The results show that yield increased due to the extended heating time. By measuring the pH 4.6 SN and 12% TCA soluble nitrogen, the proteolysis of the cheeses with elevating maturation temperature could accelerate. The texture was determined by TA-XT2.The differences of flexibility, cohesion, viscosity of ultrafiltrated milk cheese were not significant comparing with the control cheese. Flexibility of cheese texture, cohesion, viscosity are reduced and the difference was significant (P <0.05) while raising the ripening temperature, which was related to protein degree of hydrolysis under the same conditions. Combined with sensory evaluation, the cheese with higher ripening temperature have low flavor score due to bitter taste; meanwhile, the overall score of texture were lower possibly because lower hardness, poor chewiness.

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