食品科学 ›› 2010, Vol. 31 ›› Issue (14): 241-244.doi: 10.7506/spkx1002-6630-201014055

• 分析检测 • 上一篇    下一篇

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

赵 康1,2,苏政荣3,杨碧文3,谈 锋2,邓 君1,*   

  1. 1.西南大学药学院 2.西南大学生命科学学院 3.重庆西里蚕种场
  • 收稿日期:2009-09-21 修回日期:2010-05-11 出版日期:2010-07-15 发布日期:2010-12-29
  • 通讯作者: 邓君 E-mail:dengjcq@163.com

Determination of Resveratrol and Polydatin in Mulberry

ZHAO Kang1,2,SU Zheng-rong3,YANG Bi-wen3,TAN Feng2,DENG Jun1,*   

  1. (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)
  • Received:2009-09-21 Revised:2010-05-11 Online:2010-07-15 Published:2010-12-29
  • Contact: DENG Jun1,* E-mail:dengjcq@163.com

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。

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)

Abstract:

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 100μg/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.

Key words: mulberry, resveratrol, polydatin, determination, high-performance liquid chromatography (HPLC)

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