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鱼和鱼样品的冷储存程序:营养成分组成和对保存的影响
Eystein Oveland1, Annbjørg Bøkevoll1, Pedro Araujo1
1Institute of Marine Research, Bergen, Norway.
Journal of food science
|July 26, 2024
概括
冷干燥鱼类同质化物稳定营养物质,在-20°C的冷储存中保持长达一年的时间,为保存鱼类样本进行分析提供了一种经济高效的方法. 这种方法在营养稳定性方面被证明优于湿冷储存.
科学领域:
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
- 营养生物化学 营养生物化学
背景情况:
- 鱼样的长期冷储存对于随后的营养分析至关重要.
- 维生素,氨基酸和脂肪酸的降解可以在冷储存期间发生.
- 优化储存条件对于准确的分析测量至关重要.
研究的目的:
- 评估冷干燥作为一种稳定鱼类肌肉同质物的方法,用于长期冷储存.
- 为了比较不同冷储存温度 (-20°C和-80°C) 的冷干燥和湿鱼样本中的营养稳定性.
- 确定最佳的储存条件,以保持鱼类肌肉均质的关键营养物质长达一年.
主要方法:
- 准备了鱼类肌肉同质物 (大西洋鱼和欧洲白鱼),并将其分为湿和冷组.
- 样品在-20°C和-80°C下保存长达12个月.
- 维生素,氨基酸和脂肪酸在基线和1,3,6和12个月使用经过验证的分析方法量化.
主要成果:
- 冷干燥在两种鱼类中稳定了氨基酸,维生素和脂肪酸,当它们在-20°C下保存长达一年时,其性能优于湿冷存储.
- 与-20°C相比,在-80°C的储存并没有为冷干燥样品提供额外的保存优势.
- 对于湿冷藏样品,建议在-80°C储存,以保持一年的最佳保存,尽管-20°C也显示了几个营养素的良好保存.
结论:
- 冷干燥,然后在-20°C处冷储存是一种可行且具有成本效益的策略,可以在营养分析之前至少保存一年的鱼肌同质物.
- 这种方法确保了氨基酸,脂溶性维生素,水溶性维生素和脂肪酸的稳定性.
- 冷干燥可能会提高提取效率或改变干重,这可能会导致像鱼这样的瘦鱼中某些脂肪酸的测量略有增加.
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