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结合剂可溶性和可溶性pectins的结构特征:影响果汁质量
Jianing Liu1, Jinfeng Bi2, Xuan Liu3
1Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong SAR, China.
高压均质化改变了果汁的pectin结构,影响了甲基化和侧链. 这些pectin变化影响果汁聚合和物理稳定性,影响整体果汁质量.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 材料科学 是一种材料科学.
背景情况:
- pectin是果汁中重要的结构性多糖体.
- 的结构特征显著影响果汁质量属性.
- 了解点的行为是优化果汁加工和稳定性的关键.
研究的目的:
- 调查果汁中的溶性pectin (CSP) 和溶性pectin (ASP).
- 确定高压均质化 (HPH) 对CSP和ASP结构的影响.
- 与果汁质量属性相关联的pectin结构变化.
主要方法:
- 从果汁中提取和描述CSP和ASP.
- 高压均质化 (HPH) 处理的应用.
- 对pectin结构变化的分析,包括rhamnogalacturonan-I (RG-I) 分支,甲基化程度 (DM) 和乙化程度 (DA).
主要成果:
- 在CSP和ASP中,HPH处理减少了分支RG-I结构.
- HPH降低了CSP的DM和DA,改变了甲基的分布.
- 在CSP中增加非甲基化银酸块与果汁聚合相关.
- CSP侧链结构影响了果汁颗粒大小.
- 在CSP中较低的homogalacturonan与RG-I比率提高了物理稳定性.
结论:
- 在水果果汁中,HPH显著改变了pectin结构.
- 的结构特征,特别是DM和侧链的安排,是果汁聚合,颗粒大小和物理稳定性的关键决定因素.
- 通过HPH对点丁结构的有针对性的修改为控制果汁质量提供了潜力.
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