近红外光谱法结合化学计量学方法鉴别山药粉及其掺杂品
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- 英文论文题名：Near infrared spectroscopy combined with chemometrics to authenticate yams powder and the adulteration
- 论文作者：郭瑛 ; 倪永年
- 英文论文作者：Ying Guo ; Yongnian Ni ; College of Chemistry ; Nanchang University
- 年：2016
- 作者机构：南昌大学化学学院;
- 论文关键词：山药粉 ; 近红外 ; 化学计量学方法 ; 掺杂
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十五分会：化学信息学与化学计量学
- 语种：中文
- 分类号：O657.33;TS207.3
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十五分会 ; 化学信息学与化学计量学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：236k
- 原文格式：D
- 会议级别：全国
摘要
山药(Yams)是世界上许多热带国家重要的主食,此外,在东方国家山药被广泛用于保健食品,改善胃肠道功能~([1])。山药除富含淀粉、膳食纤维以外,还含有蛋白质、脂肪、各种维生素、矿物质以及对人体有益的保健成分多糖、氨基酸、黄酮类物质~([2])。市场上山药粉常掺入便宜淀粉,如木薯、甘薯、马铃薯和玉米淀粉。本文采用一种快速,无损,绿色的近红外漫反射光谱法结合化学计量学方法区分和鉴别掺杂了不同比例马铃薯淀粉的山药粉,其中PCA(主成分分析),LDA(线性判别分析),PLS(偏最小二乘)用于样品的模式识别,同时RBF-PLS(径向基函数-偏最小二乘)用于对其掺假比例进行预测。
Yams(the tubers of the Dioscorea spp.) is a basic food in Asia and especially China.The yam contains phytochemicals such as polysaccharides,sapogenins,saponins,starch,mucopolysaccharides,proteins,amino acids,and flavonoids,among many other substances.Unfortunately,for economical reasons,in the market,pure yam products are sometimes adulterated with some cheaper starches,such as cassava,sweet potato,potato and maize starches.Near infrared spectroscopy(NIRs),a rapid nondestructive and green technique was combined with chemometrics to authenticate yams powder and the adulteration,in which principal component analysis(PCA),linear discriminant analysis(LDA),partial least square(PLS) were used for pattern recognition of samples.On the same time,radial basis function-partial least square(RBF-PLS) was used to predict the adulteration ratio.
Yams(the tubers of the Dioscorea spp.) is a basic food in Asia and especially China.The yam contains phytochemicals such as polysaccharides,sapogenins,saponins,starch,mucopolysaccharides,proteins,amino acids,and flavonoids,among many other substances.Unfortunately,for economical reasons,in the market,pure yam products are sometimes adulterated with some cheaper starches,such as cassava,sweet potato,potato and maize starches.Near infrared spectroscopy(NIRs),a rapid nondestructive and green technique was combined with chemometrics to authenticate yams powder and the adulteration,in which principal component analysis(PCA),linear discriminant analysis(LDA),partial least square(PLS) were used for pattern recognition of samples.On the same time,radial basis function-partial least square(RBF-PLS) was used to predict the adulteration ratio.
引文
[1]Yang,M.H;Yoon,K.D.;Chin,Y.W.;Park,J.H.;Kim.Bioorg.Med.Chem.2009,17(7):2689.
[2]Ju,Y.;Xue,Y.;Huang,J.L.;Zhai,Q.Z.;Wang,X.H.Int.J.Biol.Macromol,2014,66:81
[2]Ju,Y.;Xue,Y.;Huang,J.L.;Zhai,Q.Z.;Wang,X.H.Int.J.Biol.Macromol,2014,66:81