酸盐和两阶段:影响脂质氧化和柔软性在素白牛肉半倾斜性
Nik Zuhairah Nik Zainal Abidin1, Nurul Aimiza Shamsuddin1, Nur Raudhatul Syahindah Mohd Radzi1
1Division of Food Industry, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut, Malaysia.
概括
三聚酸盐 (STPP) 显著改善了嫩度,并减少了牛肉中的脂质氧化. 较高的STPP度增强肌纤维结构,导致更柔软的牛肉和更好的保质期稳定性.
科学领域:
- 食品科学 食品科学 食品科学
- 肉类科学 肉科学
- 食品化学 食品化学
背景情况:
- 软肉是准备软肉制品的一个流行的方法.
- 众所周知,酸盐添加剂会影响肉质属性.
- 了解酸盐对小牛肉的影响对于产品开发至关重要.
研究的目的:
- 为了评估三聚酸 (STPP) 对牛肉的嫩度和脂质氧化的影响.
- 确定最佳的STPP度和条件,以提高牛肉的质量.
主要方法:
- 牛肉半状切片经过不同度的STPP (0%,0.15%,0.3%) 处理,并在60°C或70°C下煮 sous-vide 3 或 6 小时.
- 使用华纳-布拉茨勒切削力 (WBSF) 评估了柔软度.
- 脂质氧化被测量为硫巴比特酸反应物质 (TBARS).
- 使用扫描电子显微镜 (SEM) 和SDS-PAGE分析了微结构变化.
主要成果:
- STPP显著提高了牛肉的柔软度,由减少的WBSF值表明.
- SEM和SDS-PAGE显示,STPP松动了肌纤维结构,并削弱了肌/动蛋白带.
- 0.3%STPP显著改善了在60°C下6小时的敏感性.
- STPP延迟了脂质氧化,在冷藏4周后观察到较低的TBARS值.
- STPP没有显著影响pH或FTIR频谱.
结论:
- 三聚酸有效地改善了嫩度,并延长了牛肉 sous-vide 的保质期.
- 0.3%STPP的最佳度为肉质提供了显著的好处.
- 通过肌纤维细胞结构修饰,STPP增强了敏感性,并改善了氧化稳定性.
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