固醇,托科菲醇和生物活性脂肪酸在传统,高品质和有机牛奶之间的差异
M Martini1, I Altomonte2, I Sodi2
1Department of Veterinary Science, University of Pisa, 56121 Pisa, Italy; Interdepartmental Research Center, Nutrafood, Nutraceuticals and Food for Health, University of Pisa, 56121 Pisa, Italy.
Journal of dairy science
|August 29, 2023
概括
通过比较有机,传统和高质量的牛奶,这项研究发现固醇含量没有显著差异. 然而,高品质牛奶的n-3脂肪酸含量高于传统和有机牛奶.
科学领域:
- 乳制品科学 乳制品科学
- 营养生物化学 营养生物化学
- 食品化学 食品化学
背景情况:
- 牛奶的营养价值已经确立,但不同的生产类型中,小成分 (如固醇和维生素) 的研究较少.
- 以前的研究主要集中在总成分和脂肪酸上,忽视了小牛奶成分的潜在功能差异.
研究的目的:
- 调查传统,高质量和有机牛奶的营养差异,重点关注固醇 (动物和植物衍生),多科菲醇和生物活性脂肪酸.
- 为了比较三个不同的商业牛奶类别的醇和脂肪酸概况.
主要方法:
- 对醇成分的分析,包括胆固醇,兰醇,德斯莫醇,布拉西卡斯特醇和β-固醇.
- 脂肪酸概况的量化,特别关注omega-3 (n-3) 脂肪酸.
- 来自传统,高质量和有机 (符合欧盟标准) 生产类型的牛奶样本的比较分析.
主要成果:
- 在这三种牛奶类型中,在总成分或固醇概况上没有发现显著差异.
- 胆固醇水平在271.37至278.76毫克/100克脂肪之间.
- 植物固醇总量在4.43至4.71毫克/100克脂肪之间,其中布拉西卡斯托尔和β-固醇是主要的植物固醇.
- 在脂肪酸概况中发现了显著的差异,高质量的牛奶与传统和有机牛奶相比,具有更高的n-3含量.
结论:
- 生产类型和标签 (传统,高质量,有机) 对商业牛奶的固醇成分的影响最小.
- 虽然固醇样本在很大程度上是一致的,但高质量的牛奶显示出更高的n-3脂肪酸含量,这表明潜在的营养益处.
- 进一步的研究可以探索牛奶中这些微小成分差异的功能影响.
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