期刊论文

Rapid determination of fatty acid content in camellia oil based on near infrared spectroscopy technology

中文

湖南农业大学学报(自然科学版)

1007-1032

2016

42

6

676-681

10.13331/j.cnki.jhau.2016.06.017

31401281:国家自然科学基金 14JJ3115:湖南省自然科学基金 2014207:湖南省高等学校科技创新团队支持计划 2016NK2151:湖南省科技计划重点项目

本校为第一机构

为快速准确地测定茶油中脂肪酸含量,建立了应用近红外光谱技术检测茶油中脂肪酸含量的方法。选取市售的156份茶油样品,利用气相色谱仪测定其脂肪酸组成及含量,同时采用近红外光谱仪采集油样的光谱数据,并分析原始(R)光谱、SG平滑(SG)光谱和二阶导数变换(SD)光谱与茶油中脂肪酸含量的相关性,采用偏最小二乘回归法(PLSR)比较全光谱波段与显著性波段对建模精度的影响,优选出茶油中脂肪酸含量的定量检测模型。结果表明:茶油中棕榈酸、油酸和亚油酸含量较高,分别为4.428%~10.931%、78.036%~84.621%、7.013%~9.863%;采集的茶油近红外光谱曲线特征变化较为明显,光谱特征峰的位置分布于8 600~8 200、7 3...

To determine fatty acid content in camellia oil non-destructively and precisely, the method was proposed to determinfatty acid content in camellia oil by near infrared spectroscopy technology. 156 kinds of commercial camellia oil were used as the samples camellia oil fatty acid composition and content was got by using the gas chromatograph, and the near infrared spectrum information collected by using the spectrometer. The correlation between the original spectrum, SG smooth spectral, two derivative transform spectrum and the fatty acid content...