贮藏条件对杭白菊功能成分的影响

为探究存储包装材料及温度条件对中药杭白菊中各功能组分的影响，本研究采用产业上最常用的铝箔袋、牛皮纸、透明聚乙烯袋对杭白菊进行包装并在冷冻（?20 ℃）、冷藏（2 ℃）及常温（20 ℃）条件下贮藏。测定杭白菊的水分、多糖、黄酮、绿原酸、木犀草苷及奎宁酸等功能性成分含量及揭示其变化规律。相关性分析结果表明，不同贮藏条件的杭白菊水分含量与贮藏时间呈正相关，但其它四种成分与贮藏时间呈负相关。通过建立功能成分与贮藏温度和贮藏时间的二元非线性回归模型，表明冷冻和冷藏贮藏时不同包装里的杭白菊功能成分均维持较好，包装材料之间差异不显著（P>0.05）。常温贮藏时，杭白菊品质劣变较快，且包装材料之间具有显著差异（P<0.05）。其中，铝箔袋包装的杭白菊各项功能成分相对牛皮纸包装和透明聚乙烯袋变化更小。因此，综合杭白菊的功能成分变化及贮藏经济成本，建议杭白菊使用铝箔袋包装，并在冷藏条件下贮藏。

Effect of Storage Conditions on Functional Compositions of Chrysanthemum morifolium

This work aimed to study the effects of packaging material and storage temperature on the functional components of Chinese herb Chrysanthemum morifolium. Chrysanthemum morifolium samples were stored in aluminum foil, kraft paper and polyethylene packages which were three kinds of widely-used package materials in industry, and then kept at freezing (?20 ℃), cold (2 ℃) and room temperature (20 ℃), respectively. The moisture, total sugar, flavonoids, chlorogenic acid, luteolin and 3, 5-O-dicaffeyl quininic acid of samples were determined for analyzing their variation trends. Correlation analysis (CA) showed that the moisture of samples was closely correlated with its storage time, but other four compositions were negatively correlated with it. By building the Binary nonlinear regression models of compositions against temperature and storage time, the functional compositions of Chrysanthemum morifolium stored in different package materials could kept relatively stable at freezing and cold storage conditions, the difference was not significant (P>0.05). However, at room temperature, the quality indexes of samples went bad more quickly, and the differences between three package materials were significant (P<0.05). Herein, aluminum foil packages made the variations of all compositions of Chrysanthemum morifolium lower than kraft paper and polyethylene package. Therefore, considering the variation rules of functional components and the economic cost of storage, it is suggested that Chrysanthemum morifolium should be packaged in aluminum foil bags and stored in cold storage.