乌天麻外观性状与特征性成分含量相关性研究

Study on the Correlation between the Appearance Characteristics and Content of Characteristic Components of Gastrodia elata f.glauca

关键词:  乌天麻  性状特征  有效成分  颜色  电子舌  电子鼻

Key words:  Gastrodia elata f.glauca  characteristic traits  active ingredients  color  electronic tongue  electronic nose

摘要:

为探究乌天麻(Gastrodia elata f.glauca)外观性状与特征性成分含量之间的关系,本研究通过采集贵州、陕西两地天麻主产区的乌天麻鲜品,测定其长度、宽度、厚度、质量等指标,利用电子感官仪测定样品色、气、味等性状特征值,采用高效液相色谱法测定样品中主要有效成分的含量,以进一步探究两者的相关性。结果表明,乌天麻形、色、气、味等性状特征值与其主要成分含量之间均存在一定的相关性。其中,厚度与天麻素、对羟基苯甲醇、巴利森苷类含量的关联性最强,呈正相关;颜色值a^*与天麻素含量呈极显著负相关,L^*、E^*_ab与对羟基苯甲醇含量呈显著负相关;对羟基苯甲醇含量与电子舌CTS (咸)、ANS (甜)响应值呈极显著正相关,与电子鼻LY型响应值呈显著或极显著负相关,与T型和P型响应值呈显著或极显著正相关。研究结果可为乌天麻质量评价提供参考。

Abstract:

In order to investigate the relationship between the appearance traits and the content of characteristic components of Gastrodia elata f.glauca,this study was carried out by collecting the fresh products of Gastrodia elata f.glauca from the main production areas in Guizhou and Shaanxi,and determining its length,width,thickness,and mass,using electronic sensory instruments to determine the characteristic values of the samples' traits such as color,gas,and taste,and using high performance liquid chromatography to determine the content of the main active ingredients in the samples.The results showed that there was a certain correlation between the characteristic values of the shape,color,gas,taste of G.elata f.glauca and the content of its characteristic components.The tuber thickness was extremely positively correlated with the contents of gastrodin,P-hydroxybenzyl alcohol and parishin;the color value a^* of powder was extremely negatively correlated with the content of gastrodin.L^* and E^*_ab were significantly negatively correlated with the content of P-hydroxybenzyl alcohol.The content of P-hydroxybenzyl alcohol was extremely positively correlated with the CTS (salty) and ANS (sweet) response values of the electronic tongue,significantly or extremely significantly negatively correlated with the electronic nose LY-type response value,and significantly or extremely significantly positively correlated with the T-type and P-type response values.The research results can provide reference for the quality evaluation of G.elata f.glauca.