NDLI: NMR spectroscopy as a screening tool to validate nutrition labeling of milk, lactose-free milk, and milk substitutes based on soy and grains

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NMR spectroscopy as a screening tool to validate nutrition labeling of milk, lactose-free milk, and milk substitutes based on soy and grains

Content Provider	Springer Nature Link
Author	Monakhova, Yulia B. Kuballa, Thomas Leitz, Jenny Andlauer, Claudia Lachenmeier, Dirk W.
Copyright Year	2011
Abstract	Lactose-free milk and milk substitutes based on soy, oat, or rice are widely marketed to lactose-intolerant consumers. In this study, 400 MHz $^{1}$H nuclear magnetic resonance (NMR) spectroscopy was used in the context of food surveillance to validate the “lactose-free” claims labeled on these beverages. Using soft independent modeling of class analogy (SIMCA) analysis, a qualitative classification according to the type of beverage (lactose-containing milk, lactose-free milk, oat, soy, and rice milk substitutes) was possible. Furthermore, quantitative data regarding nutrition labeling parameters were predicted from the same spectra using partial least squares (PLS) regression. The models obtained for carbohydrate, sugars, protein, fat, saturates, and energy (R $^{2}$ = 0.89–0.97) were suitable for a screening analysis. Using nicotinamide as an internal standard, quantitative determination of lactose with a detection limit of 0.03 g.L$^{–1}$ was also possible using direct integration of the signals (linear range, 0.05–50.0 g.L$^{−1}$, R > 0.999). The relative standard deviations for the lactose-free milks were below 10%. NMR spectroscopy was judged to be suitable for the rapid routine analysis of milk and milk substitutes.摘要脱乳糖乳和以大豆、燕麦和谷物为基料的代乳食品是乳糖不耐症消费者广泛青睐的食品。本研究利用核磁共振波谱(400 MHz $^{1}$H)检测那些标注“无乳糖”饮料的合法性。利用软独立建模(SIMCA)分类法对饮料的类型(含乳糖乳,脱乳糖乳以及大豆、燕麦和谷物为基料的代乳食品)进行了定性分类。而且,关于这些营养标注产品的定量数据可以从相同的光谱中利用偏最小二乘回归(PLS)来预测。该模型的建立对碳水化合物、糖、蛋白质、脂肪、饱和烃以及能量(R $^{ 2 }$=0.90–0.97)都可以用来进行检测分析。以烟碱作为内标物,乳糖定量分析的检测限是0.03 g. L$^{-2}$,可以直接对检测信号进行积分(线性范围为0.05–50.0 g.L, R > 0.999)。脱乳糖乳产品检测的相对标准偏差低于10%,因此,NMR光谱法适合对乳以及代乳食品进行快速常规的分析。
Starting Page	109
Ending Page	120
Page Count	12
File Format	PDF
ISSN	19585586
Journal	Dairy Science & Technology
Volume Number	92
Issue Number	2
e-ISSN	19585594
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-12-15
Publisher Place	Paris
Access Restriction	Subscribed
Subject Keyword	NMR spectroscopy Lactose Lactose intolerance Milk Milk substitutes Soy milk Dairy products Agriculture Microbiology Food Science
Content Type	Text
Resource Type	Article
Subject	Biochemistry Food Science

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