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在牛奶中进行一项初步研究,通过FTIR和化学测量来区分山羊养方案

Maria Tarapoulouzi¹, Photis Papademas²

¹Department of Chemistry, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus.

The Journal of dairy research

|May 18, 2025

概括

中等红外光谱学可以区分山羊奶与自由放牧和密集养方案. 这种方法准确地识别了动物养做法,这对于原产地保护名称奶酪至关重要.

科学领域:

农业科学农业科学
分析化学分析化学
食品科学食品科学食品科学

背景情况:

自由放牧 (广泛) 奶牛养殖影响了牛奶的特性,特别是风味,因为植物多样化.
保护原产地名称 (PDO) 奶酪通常要求放牧养,需要验证动物饮食的方法.
确定不同的养方案对于乳制品生产的质量控制和真实性至关重要.

研究的目的:

评估中红外光谱 (MIR) 用于区分来自自由放牧和密集养系统的山羊奶.
开发一种基于养方案准确分类牛奶的化学模型.
评估MIR光谱的可行性,以验证奶牛养殖中的动物饮食.

主要方法:

在春季从一个农场收集了65只山羊奶样本,分为自由放牧和密集养组.
使用常规的中红外光谱 (4000-400厘米−1) 与富里埃变换红外技术.
应用直角局部最小平方差分分析 (OPLS-DA) 用于化学测量分析和数据解释.

主要成果:

福利埃变换红外光谱学产生了不同养模式的牛奶的独特光谱谱.
正角部分最小平方差异分析成功建模了光谱数据.
开发的化学测量模型实现了95.4%的正确分类准确度,用于区分密集和自由放牧的山羊奶.

结论:

中红外光谱学与OPLS-DA相结合,是根据养方案区分山羊奶的有效工具.
这种方法可以可靠地识别来自自由放牧的牛奶与密集养系统的牛奶.
这些发现支持MIR光谱的应用,用于验证乳制品生产中的养做法,特别是PDO产品.

关键词:

真实性真实性真实性在FT-IR中,使用的是FT-IR.养养养养羊奶:山羊奶是一种牛奶.

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