揭示了三种pectin分量的结构性质,在桃子加工过程中影响果粉色的变化
Weining Chen1, Jinfeng Bi1, Wenyue Wang1
1Institute of Food Science and Technology, CAAS, Key Laboratory of Agri-Products Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100193, China.
Carbohydrate polymers
|December 5, 2024
概括
桃子的成熟通过改变点结构,增加了棕色的颜色. 像水溶性pectin (WSP) 这样的调节pectin分量,可以帮助控制桃子的棕色化过程.
科学领域:
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
- 植物生理学 植物生理学
背景情况:
- 桃子加工棕色化是一个重要的问题.
- 色中pectin结构变化的作用尚不清楚.
研究的目的:
- 为了研究桃子成熟过程中不同pectin分量的结构变化.
- 确定这些变化和预处理对加工色的影响.
主要方法:
- 分析不同成熟阶段 (24,48,72小时) 的点丁分数 (WSP,CSP,NSP).
- 预处理的评估 (冷冲击,CaCl2,组合).
- 测量棕色化指数,反应性氧物种,酶活性和乳清素的结构参数 (Mw,Mn,线性,分支,化).
主要成果:
- 延长成熟增加了色,反应性氧物种和酶活动.
- pectin 分数在成熟时表现出明显的结构变化,包括分子重量变化,线性,分支和rhamnogalacturonan比例.
- 棕色与特定的点结构特征相关,如分子量,线性和分支程度.
结论:
- pectin结构调制是控制桃子加工色的关键.
- 保持pectin多分散性和rhamnogalacturonan分支可能会抑制棕色化.
- 研究结果提供了通过蛋白操纵来管理桃子色的策略.
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