脂肪酸和二次代谢产物可以预测草地加工的牛肉和补充牛料
Lucas Krusinski1,2, Isabella C F Maciel3, Stephan van Vliet4
1Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA.
NPJ science of food
|October 4, 2024
概括
补充料可以保持草地完成牛肉的营养质量. 代谢学分析准确地识别了牛的饮食,区分了料和料为主的牛肉.
科学领域:
- 农业科学 农业科学
- 营养科学 营养科学
- 分析化学 分析化学
背景情况:
- 在生物多样性的牧场上进行轮回放牧,提高了牛肉的营养价值,并为环境带来了好处.
- 由于季节性料限制,牛生产者需要补充料或被关押.
- 了解不同饮食对牛肉化学特征的影响对于质量评估至关重要.
研究的目的:
- 在不同的补充食方案下,对草地牛肉中的二次代谢物和脂肪酸进行分析.
- 调查使用这些配置文件以验证基于饮食的草地加工牛肉的真实性.
- 评估各种补充料如何影响牛肉的营养成分.
主要方法:
- 这是一项为期两年的研究,涉及115头牛,分为四个饮食组:牧场/禾,牧场/豆,牧场/大豆和封闭式/大豆.
- 使用超高性能液体染色学-并联质谱法 (UHPLC-MS/MS) 分析二次代谢物.
- 使用气色谱-质谱法 (GC-MS) 量化脂肪酸,并使用随机森林模型进行分类.
主要成果:
- 在不同饮食中观察到金素,α-托科菲罗尔,希普酸和酸的显著差异 (p < 0.05).
- 随机森林分类实现了 100% 的准确性,用于牧场/禾, 97% 的限制, 50% 的牧场/,和 41% 的牧场/大豆皮.
- 代谢分析显示,在预测完全以料为基础的饮食与以料为基础的饮食方面,具有很高的确定性.
结论:
- 某些补充料可以保持草地加工牛肉特有的有利营养特征.
- 代谢学作为一种强大的工具,可以根据牛的食历史对牛肉进行高精度的认证.
- 饮食干预提供了一个可行的策略,以保持牛肉的质量,尽管季节性料变化.
更多相关视频
相关概念视频
01:28Overview of Fatty Acid Metabolism
Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
01:06Fats as Energy Storage Molecules
Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis directly...