不同产地枸杞叶片多糖、总黄酮和总酚含量差异比较分析

为了解我国不同区域宁夏枸杞Lycium barbarum叶片成分差异,收集宁夏、青海、甘肃3个主产区14个种植区域的宁夏枸杞叶片,分析比较多糖、总黄酮和总酚含量。结果显示,不同枸杞种植区域枸杞叶片多糖、总黄酮和总酚含量存在显著差异,多糖以青海香日德镇种植区较高,质量分数为15. 02%,总黄酮以格尔木市大格勒乡含量较高,质量分数为28. 63%,总酚以青海德令哈市柯鲁柯镇种植区含量较高,质量分数为16. 7%;不同采摘期3类物质含量也存在差异,多糖5月(10. 20%)显著高于6月(8. 49%);总黄酮和总酚6月(17. 71%,12. 77%)显著高于5月(14. 15%,11. 19%)。枸杞叶片多糖含量与种植区海拔无显著相关性,而总黄酮和总酚含量与海拔具有一定正相关性。枸杞叶片的综合开发利用应考虑其种植区域和采摘时间。

Variance analysis on polysaccharide,total flavonoids and total phenols of Lycium barbarum leaves from different production areas

To compare the polysaccharides( LBLP),total flavonoids( LBLTF) and total phenols( LBLTP) of Lycium barbarum leaves from 14 production areas from Ningxia,Qinghai and Gansu at different harvesting time. Our results showed that there were significant difference of LBLP,LBLTF and LBLTP among different production areas. The LBLP collected from Xiangride township production area,Dulan,Qinghai was as high as 15. 02%. The LBLTF collected from Dagele township production area,Geermu,Qinghai was as high as28. 63%. The LBLTP collected from Keluke township production area,Delingha,Qinghai was as high as 16. 7%. There were also significant difference of these 3 components between different harvest periods. The average LBLP in May( 10. 20%) was significantly higher than that in June( 8. 49%). However,the average LBLTF( 17. 71%) and LBLTP( 12. 77%) in June was significantly higher than that in May( 14. 15%,11. 19%). The LBLTF and LBLTP have a positive correlation with the altitude of production areas,but there was no significant association between LBLP and altitude. The LBLP,LBLTF and LBLTP in different production areas and harvesting time was significant difference,the results provide some references for furthermore development and utilization of L. barbarum leaves.