基于NIR的银桥牌婴幼儿配方乳粉指纹图谱的建立与应用

发布时间：2018-04-22 15:05

本文选题：银桥牌婴幼儿配方乳粉 + 指纹图谱　；参考：《西北农林科技大学》2017年硕士论文

【摘要】：婴幼儿配方乳粉是非母乳喂养的婴幼儿全部营养来源,对于婴幼儿的正常发育和健康成长有着重要的意义。基于婴幼儿配方乳粉对于婴幼儿成长的重要性,因此婴幼儿配方乳粉市场不断增加,越来越激烈。某些厂家因为利益驱使制造假冒的婴幼儿配方乳粉,造成市面上出现大量的假冒婴幼儿配方乳粉,不仅损害婴幼儿的身体健康,还损害生产商的利益。需要建立简单、快速的鉴定方法,用于婴幼儿配方乳粉品牌假冒鉴定。本文利用近红外光谱技术建立银桥牌婴幼儿配方乳粉的指纹图谱,并与其他品牌的婴幼儿配方乳粉比较,进行婴幼儿配方乳粉品牌假冒的鉴定。主要研究结果如下:(1)研究温度和堆积紧实度对婴幼儿配方乳粉近红外光谱的影响结果表明(a)随着温度的升高,光谱的相对吸收度呈现不严格的下降趋势;(b)在5300~5000 cm-1范围内,对婴幼儿配方乳粉施加压力和没有压力的光谱存在显著差异(P0.05),但在施压的范围内,施加压力的大小对光谱的影响差异不显著(P0.05)。(2)建立了银桥牌的婴幼儿配方乳粉指纹图谱,其9个特征波数是4178.16、4488.73、4746.44、4997.55、5156.14、5341.16、6008.57、6794.91和8268.49 cm-1,银桥牌婴幼儿配方乳粉对应的吸光值的比值是0.240:0.584:0.280:0.184:0.542:0.396:0.881:0.561:1.000,并且实验方法的稳定性、精密度和重现性良好。(3)利用构建的婴幼儿配方乳粉指纹图谱既可以鉴别同一品牌不同使用对象的婴幼儿配方乳粉也可以鉴别同一使用对象不同品牌的婴幼儿配方乳粉。银桥牌婴幼儿配方乳粉的1段与2段、3段可以区分开,但2段和3段区分不开。银桥牌的1、2或3段婴幼儿配方乳粉,均能与其他品牌的相同使用对象的婴幼儿配方乳粉分开。
[Abstract]:Infant formula milk powder is the whole nutrition source of the non breast-feeding infant. It is of great significance for the normal development and healthy growth of infants. Based on the importance of infant formula milk powder for the growth of infants, the infant formula milk powder market is increasing, and the more intense. Some manufacturers are driving the counterfeit because of the benefits. A large number of infant formula milk powder appeared on the market, which not only damages the health of infants and infants, but also damages the interests of the manufacturers. It is necessary to establish a simple and rapid identification method for the brand counterfeit identification of infant formula milk powder. The fingerprint of formula milk powder was compared with other brands of infant formula milk powder, and the brand counterfeit of infant formula milk powder was identified. The main results were as follows: (1) the results of the influence of temperature and accumulation on the near infrared spectrum of infant formula milk powder showed that (a) the relative absorption of the spectrum was not present with the increase of temperature. In the range of 5300~5000 cm-1, the spectrum of infant formula milk powder exerted pressure and no pressure was significantly different (P0.05) in the range of (b) cm-1, but the effect of pressure on the spectrum was not significant (P0.05) in the range of pressure. (2) the fingerprints of infant formula milk powder of the silver bridge were built, and the 9 characteristic waves were established. The number is 4178.164488.734746.444997.555156.145341.166008.576794.91 and 8268.49 cm-1. The ratio of the absorption value of the formula milk powder to the silver bridge infant formula is 0.240:0.584:0.280:0.184:0.542:0.396:0.881:0.561:1.000, and the stability, precision and reproducibility of the experimental method are good. (3) using the constructed infant formula milk powder. The fingerprints can distinguish the infant formula milk powder from the same brand with the same brand, and can identify the infant formula milk powder of the same brand. The 1 and 2 segments of the silver bridge infant formula milk powder can be separated, but the 2 and 3 segments can not be separated. The 1,2 or 3 section infant formula milk powder of the silver bridge brand can all be the same. His brand is separated from the infant formula milk powder of the same object.

【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O657.33;TS252.51

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