在超高温灭菌牛奶中解凝:组成变化和蛋白质化学表征
Kairu He1, Guoxin Yao2, Rina Wu1
1College of Food Science, Shenyang Agricultural University, Liaoning Engineering Research Center of Food Fermentation Technology; Shenyang Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang 110866, PR China.
Food research international (Ottawa, Ont.)
|November 21, 2025
概括
在UHT牛奶中的凝是由等离子体系统调节失调引起的,影响素水解和蛋白质聚合. 这项研究确定了关键蛋白质和潜在的生物标志物,用于早期检测凝风险.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 凝是储存期间超高温 (UHT) 牛奶的主要质量缺陷.
- 素小细胞不稳定和凝网络形成的分子机制尚未完全理解.
- 内生酶活性是已知的UHT奶凝的贡献者.
研究的目的:
- 为提供UHT奶凝的第一个物理化学表征.
- 使用蛋白质组学识别与UHT奶凝相关的潜在生物标志物.
- 阐明UHT牛奶中凝的基础分子机制.
主要方法:
- 超高温牛奶的物理化学表征.
- 蛋白质组分析以确定差异表达的蛋白质.
- 对等离子体系统组件,结合蛋白和脂质代谢调节剂的分析.
主要成果:
- 等离子体系统的失调加速了素的水解,增加了酸度,颗粒大小和粘度.
- 蛋白质组学确定了247种蛋白质,其中113种具有差异表达,包括等离子体系统蛋白质,结合蛋白质和脂质代谢调节剂.
- 等离子体抑制剂的失调,结合蛋白活性变化 (例如,S100-A12) 和脂质代谢障碍有助于不可逆转的凝.
结论:
- 等离子体系统的失调是驱动UHT牛奶中的素水解和凝的核心机制.
- 结合蛋白,特别是S100-A12,在蛋白质聚合和凝网络形成中发挥着重要作用.
- 脂质代谢障碍加剧了凝,鉴定出来的蛋白质作为早期凝风险检测的潜在生物标志物.
相关概念视频
Microbes in Food Production
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
Pasteurization and Food Preservation
Pasteurization is a widely employed thermal processing technique designed to enhance the safety and shelf life of perishable food and beverages. By subjecting products to specific high temperatures for controlled durations, this method effectively inactivates pathogenic microorganisms and spoilage enzymes without significantly compromising sensory qualities. The technique has been pivotal in food safety management, especially for consumables susceptible to microbial contamination such as milk,...


