通过与碳氧甲基纤维素结合而导致β-乳糖球蛋白的功能变化
Tatsuya Arai1,2, Moeko Ono2, Maiko Yoneda2
1Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.
Cytotechnology
|March 18, 2025
概括
将β-乳糖球蛋白 (BLG) 与碳氧甲基纤维素 (CMC) 结合,可以改善其乳化特性并降低免疫性,特别是在食品应用中使用高分子量CMC时.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生化学
- 材料科学 材料科学 材料科学
背景情况:
- β-乳糖球蛋白 (BLG) 是一种主要的乳清蛋白,具有在食品中有价值的功能性质.
- BLG的应用受到其在酸性条件下的低乳化能力和盐的存在以及其免疫性所限制.
- 碳氧甲基纤维素 (CMC) 是一种具有改变蛋白质功能潜力的多糖化合物.
研究的目的:
- 使用EDC将BLG与CMC结合在一起,以增强BLG的功能特性.
- 研究CMC含量和分子量对BLG-CMC结合特性的影响.
- 评估BLG-CMC结合物的改善乳化特性和降低免疫性,用于食品应用.
主要方法:
- 使用1-乙基-3-(3-二甲基亚胺) 碳二胺 (EDC) 结合BLG和CMC.
- 使用SDS-PAGE,CD光谱和光光谱对BLG-CMC结合物的表征.
- 视网醇结合活性和抗体结合亲和力的评估 (ELISA).
- 在酸性pH值和盐的条件下对乳化特性进行评估.
- 在BALB/c小鼠中的免疫性评估.
主要成果:
- 通过SDS-PAGE证实了BLG与CMC的成功结合.
- BLG的二次结构和基形状在很大程度上保持了.
- 视网醇结合部位和特定抗体表位 (大约125Thr-135Lys) 发生了变化.
- 在酸性pH和高盐条件下,BLG的乳化特性显著改善.
- 在小鼠中,BLG的免疫性降低了,特别是高分子量CMC.
- BLG高分子量CMC结合物显示出显著的乳化改善和免疫性降低.
结论:
- 与CMC的结合是提高BLG在食品应用中的功能性质的有效策略.
- 高分子量CMC是可取的,以实现卓越的乳化特性和降低免疫性.
- BLG-CMC结合物为开发具有更高稳定性和安全性的改进食品成分提供了一个有希望的途径.
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