摘要
基于核磁共振定量氢谱(q1H NMR)技术,建立了乳品脂质分析的方法,并对市场上有机牛奶、山羊奶、大豆奶中的ω-3,DHA,EPA等脂质进行定量分析。就ω-3而言,有机牛奶>山羊奶>大豆奶;就DHA而言,山羊奶>有机牛奶>大豆奶;大豆奶中不含EPA,有机牛奶中EPA>山羊奶。此外,对不同种类奶中脂质的积分数据进行偏最小二乘判别分析(PLS-DA)及方差分析(ANOVA),进一步明确了其脂质种类及含量分布的差异,并对其进行初步营养学评价。
A new approach for determination of lipids in different milk matrix by using quantitative 1 H NMR was established. The organic bovine milk, goat i milk and soymilk collected from supermarket were detected. The results showed that the order of ω-3 was organic bovine milk 〉 goat milk 〉 soymilk, and the order of DHA% was goat milk 〉 organic bovine milk 〉 soymilk. The percentage of EPA in organic bovine milk was higher than that in goat milk, and no EPA was detected in soymilk. Besides, the PLS-DA and ANOVA methods were used to further analyze the difference of lipid distribution in the three species of milk and then evaluate the nutrition value
出处
《分析试验室》
CAS
CSCD
北大核心
2016年第2期125-129,共5页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金(31371779)
国家国际科技合作专项(2015DFG31890)项目资助