小苍兰花瓣花黄色素组成和含量分析

以6个不同花色的小苍兰品种为实验材料,在量化小苍兰花色表型和初步确定花瓣色素类型的基础上,利用UPLC-Q-TOF-MS技术鉴定花瓣中的花黄色素组成并比较分析各组分含量.结果表明:在小苍兰花瓣中鉴定到13种黄酮及黄酮醇物质,分别为槲皮素、山萘酚、异鼠李素、柚皮素、黄芩素及其糖苷;槲皮素及其糖苷是小苍兰花瓣中重要的黄酮醇...

Analysis of Composition and Content of Anthoxanthins in Petals of Freesia hybrida

In this study, the petal color of Freesia hybrida was measured by the colorimetric card and color meter, then the composition and content of anthoxanthins in petals were analyzed using UPLC-Q-TOF-MS in order to explore the relationship between petal color and the anthoxanthins content. The results showed that 5 flavonoid aglycones, up to 13 flavones and flavonols, were detected in the petals of F. hybrida for the first time. Quercetin and its glycosides proved to be an important flavonol in the petals. During flowering stages, the content of anthoxanthins decreased in general. There were significant differences in the content and components of anthoxanthins among cultivars, namely the content in red and purple cultivars, especially in ‘SN Hongtaige’, ‘Red Passion’ and ‘Castor’, were significantly higher than that in yellow and white cultivars. Significant difference in the content of anthoxanthins between the top and the base petals of ‘Red Passion’ and ‘Castor’ was reported. Correlation analysis showed a significant negative correlation between the accumulation of anthoxanthins and the brightness of the petals. The redness of petals showed a significantly positive correlation with quercetin and isorhamnetin glycosides, and a positive correlation with naringenin and kaempferol glycosides. The saturation of petals was positively correlated with kaempferol glycosides. Anthoxanthins proved to be closely related to flower color.