用培养逐步冷却对死后肉肌肉蛋白质分解和软化的影响
1Department of Animal Science, Chinese Culture University, Taipei, Taiwan.
Poultry science
|June 10, 2023
概括
培养增强了肉的柔软性,通过加速calpain活动和蛋白质解体. 这种方法与冷却和老化相结合,为屠宰场提供了一种改善肉质的新方法.
科学领域:
- 食品科学与技术 食品科学与技术
- 肉类科学 肉科学
- 生物化学 生物化学
背景情况:
- 肉的柔软度是影响消费者接受的关键品质属性.
- 卡尔帕因酶在死后肉类软化中起着重要作用.
- 优化死后处理条件可以增强calpain介导的蛋白质分解.
研究的目的:
- 为了研究 (CaCl2) 和EDTA化对的calpain活性和肉软化的影响.
- 为了评估冷却,化和老化对肉柔软性的综合影响.
主要方法:
- 在15°C下用30毫米的CaCl2或30毫米的EDTA在5小时内化的胸部大肌肉.
- 对照样本经过冷却而没有化.
- 卡尔帕因活动,80kDa卡尔帕因-1亚单位和德斯含量,剪切力和肌纤维细胞碎片化指数 (MFI) 在各种死后时间被测量.
主要成果:
- 潜化显著加快了calpain-1和calpain-11活动的下降,以及80kDacalpain-1亚单元和desmin的降解.
- 与对照和EDTA化样本相比,化肉表现出较低的剪切力值和更高的MFI.
- 这些变化是在逐步冷却,化和随后的老化后观察到的.
结论:
- 将逐步冷却 (15°C) 与化和老化 (5°C) 结合起来,可显著增强calpain介导的蛋白质分解,改善肉的柔软度.
- 这种加工策略为商业肉类行业提供了一种可行的方法来提高肉的质量.
- 培养是一种有前途的方法,可以加速禽类的死后软化.
更多相关视频
06:42A Multi-hole Cryovial Eliminates Freezing Artifacts when Muscle Tissues are Directly Immersed in Liquid Nitrogen
Published on: April 6, 2017
11.4K
07:46Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays
Published on: July 12, 2024
587
相关概念视频
Cold Weather Concreting
When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
To counteract the negative impacts of cold weather, ensuring...
Physical Methods for Controlling Microbial Growth: Temperature
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
