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用聚合物添加剂增强点颗粒:缓解乳房退化,最大限度地减少牧场奶牛的黄色牛奶颜色
Francisco Vera-Vázquez1, Jacinto Efrén Ramírez-Bribiesca1, Rosy G Cruz-Monterrosa2
1Programa de Ganadería, Colegio de Postgraduados, Km. 36.5, Montecillo, Texcoco 56230, Estado de México, Mexico.
Polymers
|January 11, 2024
概括
这项研究开发了使用点,棕油和糖的受保护微粒,以减少放牧奶牛的黄色牛奶颜色. 该PwPL配方有效地保护了pectin免受降解,并改善了牛奶质量.
科学领域:
- 动物科学动物科学
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
背景情况:
- 热带地区的放牧奶牛因食色素而产生黄色的牛奶,这影响了牛奶的质量和市场价值.
- 牧场中可获得的胡卜素有助于牛奶的黄色色调,需要采取策略来减轻这种影响.
- 保护像pectin这样的料添加剂免受皮退化对于它们在牲畜中的有效性至关重要.
研究的目的:
- 开发一种经济的微粒系统,使用素,棕油和糖来减少胡卜素的可用性和牛奶的黄色.
- 评价微粒配方对乳头微生物降解的保护作用.
- 评估这些微粒对哺乳母牛血液代谢物和牛奶特性的影响.
主要方法:
- 合成了三种基于点的微粒制剂:未受保护 (PnP),棕油保护 (PwP) 和棕油贝保护 (PwPL).
- 使用光谱学 (FTIR,UV-vis) 和电子显微镜 (EDS) 进行微粒的特征分析.
- 在不同的pH值和in situ降解性下评估了pectin释放 (尿酸);在哺乳母牛身上进行了in vivo测试.
主要成果:
- 微粒显示无形结构 (60-265nm或750-3570μm) 与负面电荷 (-11.5到-50.2mV).
- 与PnP (99%) 和PwP (28.4%) 相比,PwPL在现场降解率 (17.7%) 显著较低.
- PwPL降低了血糖,胆固醇和乳酸水平;100克点/动物也减少了牛奶的黄化.
结论:
- 用脂质 (棕油) 和聚合物 (贝) 保护的微粒提供了一种经济有效的方法来防止羊毛中pectin降解.
- 该PwPL配方通过减少黄色和改变血液代谢物来提高牛奶质量的潜力.
- 这种方法提供了一个可行的策略,用于管理在牧场上养的奶牛的牛奶颜色.
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