现场Ca2+交联效应对新鲜拉斯伯里保存的pectin-tragacanth膜
Renata Dobrucka1, Lukas Vapenka2, Mikołaj Pawlik1
1Department of Non-Food Products Quality and Packaging Development, Institute of Quality Science, Poznan University of Economics and Business, al. Niepodległości 10, Poznan 61-875, Poland.
Colloids and surfaces. B, Biointerfaces
|February 6, 2026
概括
活性包装薄膜由乳-龙舌虫制成,与化 (CaCl2) 交叉连接,显著提高了树的保质期. 这些膜提高了水果的色彩稳定性,并减少了储存期间的亮度变化.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 活性包装膜对于延长新鲜农产品的保质期至关重要.
- pectin和tragacanth是天然的多糖化合物,有可能形成膜.
- 交联可以改变多糖膜的物理和屏障特性.
研究的目的:
- 研究离子与pectin-tragacanth膜在现场交叉连接对膜的特性的影响.
- 评估这些活性包装薄膜对新鲜树的储存质量的影响.
- 为了比较不同源 (CaCl2和酸盐) 作为交联剂的有效性.
主要方法:
- 用不同度的CaCl2和酸制备了皮膜.
- 测量了薄膜的性能,包括拉伸强度 (TS) 和氧气透度.
- 易岩树在开发的活性包装膜中存储了7天.
- 评估了树的质量属性,如颜色稳定性和酸盐含量.
主要成果:
- 交叉连接 (0.125%w/w) 显著增加了薄膜强度 (TS:对CaCl2来说45.58 MPa).
- CaCl2交联薄膜表现出优越的屏障性能,降低了氧气透率.
- 用CaCl2薄膜包装的树在储存7天后显示出最佳的色彩稳定性和最小的亮度变化.
- 酸薄膜保持了红色强度,但具有更高的酸变异性.
结论:
- 在现场交叉链接的乳清 - 虫与CaCl2有效地提高了活性包装膜的特性.
- 基于CaCl2的活性包装显著提高了Easy Rock树的储存质量和颜色稳定性.
- 交叉连接保护了树的细胞结构,延长了它们的保质期.
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