确定和分析Teff蛋白质分片的组成,结构和特性
Zhenyang Quan1, Lili Zhang2, Wenping Chang1
1School of Tourism and Culinary Science, Yangzhou University, Huayang Xilu 196, Yangzhou 225127, China.
Foods (Basel, Switzerland)
|November 14, 2023
概括
在氨基酸组成,结构和热性质上,teff蛋白质分量与小麦的gliadin和glutenin显著不同. 了解这些teff蛋白质特征是开发高质量的teff食品的关键.
科学领域:
- 食品科学与技术 食品科学与技术
- 农业科学 农业科学
- 生物化学 生物化学
背景情况:
- 开发基于teff的食品产品需要对teff蛋白质分数有充分的了解.
- 泰夫蛋白,特别是胺蛋白,对于产品质量至关重要,但它们的特性并未得到很好的描述.
- 与小麦蛋白 (gliadin 和 glutenin) 的比较为teff蛋白的功能提供了一个基准.
研究的目的:
- 为了提取和分析teff蛋白质分数.
- 为了比较teff蛋白与小麦gliadins和glutenins的组成,结构和特性.
- 为开发基于teff的食品产品提供见解.
主要方法:
- 提取和分离的teff蛋白质.
- 分析蛋白质组成,氨基酸概况和异电点.
- 二次结构的特征 (α螺旋,随机线圈,β转),二硫化键,表面疏水性和热稳定性.
- 与小麦的gliadin和glutenin进行比较.
主要成果:
- 泰夫面粉含有9.07%的蛋白质,其中主要分数为胺.
- 与小麦对应物相比,teff prolamin和glutelin具有不同的氨基酸配置和水合特性.
- 泰夫胺的链条长度比小麦胺更短;泰夫胺缺乏高分子量子单元.
- 比小麦的gliadin,teff的prolamin具有更高的α-helices和热稳定性;而teff的glutelin则比小麦的glutenin具有更低的β-turns和热稳定性.
结论:
- 泰夫蛋白质分离物具有独特的结构和功能特性,与小麦的gliadins和glutenins不同.
- 氨基酸组成,链条长度,二次结构和热稳定性的差异会影响teff蛋白的功能.
- 这些发现对于优化Teff蛋白在食品产品开发中的利用至关重要.
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