超高压处理对奶油奶酪质构、风味及货架期的影响
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(1. 上海电力大学,上海 201306;2. 光明乳业股份有限公司研究院乳业生物技术国家重点实验室,上海 200436)

作者简介:

张园园,女,上海电力大学助理研究员,硕士。

通讯作者:

郑远荣(1983—),男,光明乳业股份有限公司研究院乳业生物技术国家重点实验室教授级高级工程师,硕士。E-mail:Zhang0yuan1yuan@163.com

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上海市国资委企业创新发展和能级提升项目(编号:2022013)


Effect of ultra-high pressure treatment on the texture, flavor and shelf life of cream cheese
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(1. Shanghai University of Electric Power, Shanghai 201306, China; 2. State Key Laboratory of Dairy Biotechnology, Technical Center, Bright Dairy and Food Co., Ltd., Shanghai 200436, China)

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    摘要:

    目的:确定超高压(HHP)处理奶酪的最适条件。方法:以自制奶油奶酪为研究对象,探究超高压处理压力对奶油奶酪质构、风味及货架期的影响。通过质构仪、固相微萃取—气相色谱质谱联用仪及菌落计数法分别对奶酪的质构、风味物质、微生物等进行测定。结果:经HHP处理后,奶油奶酪的硬度、黏性、耐咀性呈降低趋势;当处理压力为300 MPa时,奶酪的弹性达到最高,比未处理奶酪增加了14.0%(P<0.05);当处理压力≥400 MPa时,奶酪挥发性物质的含量和种类明显降低,且200,300 MPa处理奶酪与未处理奶酪均位于第一主成分区域;HHP处理人工染菌后的奶油奶酪,其菌落数显著下降(P<0.05),且处理压力越大,杀菌效果越好;当HHP处理压力≥300 MPa时,奶酪的货架期从7 d延长至21 d。结论:经HHP处理的奶油奶酪有良好的质地和风味,且其货架期有效延长。

    Abstract:

    Objective: This study aimed to determine the optimal conditions for ultra-high pressure (HHP) cream cheese. Methods: The influence of non-thermal processing pressure on the texture, flavor and shelf life of homemade cream cheese were explored. By using the texture profile analysis (TPA), solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS), and colony counting method, the texture, flavor substances, and microorganisms of cheese were identified and evaluated. Results: After HHP treatment, the hardness, adhesiveness, and resilience of cream cheese decreased. The springiness of cheese reached the highest at 300 MPa, significantly increasing by 14.0% (P<0.05). When the pressure is more than or equal to 400 MPa, the content and species of volatile substances in cheese are significantly reduced. Principal component analysis showed that 200 and 300 MPa treated cheese and unpressurized cheese were both in the first principal component area. After HHP treatment of artificially dyed cream cheese, the number of bacterial colonies decreased significantly (P<0.05), and the greater the treatment pressure, the better the bactericidal effect. When the HHP treatment pressure is greater than or equal to 300 MPa, the shelf life of cheese was effectively extended from 7 days to 21 days. Conclusion: The cream cheese treated by HHP has a good texture and original flavor while effectively extending the shelf life.

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张园园,刘振民,郑远荣.超高压处理对奶油奶酪质构、风味及货架期的影响[J].食品与机械,2023,39(8):110-115,174.
ZHANG Yuanyuan, LIU Zhenmin, ZHENG Yuanrong. Effect of ultra-high pressure treatment on the texture, flavor and shelf life of cream cheese[J]. Food & Machinery,2023,39(8):110-115,174.

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  • 收稿日期:2023-04-20
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  • 在线发布日期: 2023-10-20
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