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桑椹中白藜芦醇及白藜芦醇苷测定方法的建立及含量比较

作  者:
赵康;苏政荣;杨碧文;谈锋;邓君
单  位:
西南大学药学院;西南大学生命科学学院;重庆西里蚕种场
关键词:
桑椹;白藜芦醇;白藜芦醇苷;含量测定;高效液相色谱(HPLC)
摘  要:
目的:建立同时测定桑椹中白藜芦醇(Res)和白藜芦醇苷(PD)的HPLC方法,探索Res和PD在桑椹成熟过程中的变化规律,以及两者在不同品种中的含量差异。方法:phenomenex C18色谱柱(150mm×4.6mm,4μm),甲醇-水为流动相梯度洗脱,检测波长305nm,流速0.8mL/min,测定处于不同成熟期的红果2号桑椹以及红果1号、西农1号、嘉陵30号1系、嘉陵30号2系成熟桑椹的Res和PD含量。结果:Res在进样量0.5~50μg/mL、PD在2~100μg/mL范围内均呈良好的线性关系,加标回收率分别为99.0%、98.28%,RSD分别为3.86%、1.18%;在桑椹发育全程中PD的含量始终高于Res,桑椹中的Res和PD含量均为红果中期最高,紫果时下降;5个桑椹品种中,西农1号红果的总白藜芦醇含量最高,达94.5μg/g。结论:该方法能快速准确地测定Res和PD的含量;桑椹不论红果还是紫果,白藜芦醇含量均较高,其最佳采摘期为红果刚转紫时。
译  名:
Determination of Resveratrol and Polydatin in Mulberry
作  者:
ZHAO Kang1,2,SU Zheng-rong3,YANG Bi-wen3,TAN Feng2,DENG Jun1,(1.College of Pharmaceutical Sciences,Southwest University,Chongqing 400716,China;2.College of Life Science,Southwest University,Chongqing 400715,China;3.Chongqing Xili Silkworm Factory,Chongqing 400707,China)
关键词:
mulberry;resveratrol;polydatin;determination;high-performance liquid chromatography (HPLC)
摘  要:
An analytical method was established to determine the contents of resveratrol (Res) and polydatin (PD) in mulberry using HPLC with phenomenex C18 column (150 mm × 4.6 mm,4μm) based on gradient elution with MeOH/H2O at a rate of 0.8 mL/min and detection at 305 nm.The method exhibited good linearity over concentration ranges from 0.5 to 50μg/mL for Res and from 2 to 100 μ g/mL for PD.The mean recoveries (n = 3) for Res and PD at 3 spike levels were 99.0% and 98.28%,respectively,with corresponding RSDs of 3.86% and 1.18%.The content of PD was always higher than that of Res throughout the whole maturation phase.Both compounds reached their separate maximum levels in mid-red period;however,a slight reduction was observed in the purple period.Meanwhile,Xinong 1 had the highest level of total Res (original Res plus Res derived from hydrolyzed PD),reaching up to 94.5μg/g.Therefore,mulberry is rich in Res and the best harvest time should be the initial period of fruit color change from red to purple.

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