Influence of Sulfur Fumigation on the Chemical Constituents and Antioxidant Activity of Buds of Lonicera japonica

Molecules

Ai-Li Guo¹  Liang-Mian Chen¹  Yan-Min Wang¹  Xiao-Qian Liu¹  Qi-Wei Zhang¹  Hui-Min Gao¹  Zhi-Min Wang¹  Wei Xiao²  Zhen-Zhong Wang² 

[1] Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; E-Mails:;Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang 222001, China; E-Mails:

关键词: Lonicera japonica Thunb.;    sulfur fumigation;    sulfur dioxide residual;    secologanic acid;    antioxidant activity;   

DOI  :  10.3390/molecules191016640

来源: mdpi

【 摘 要 】

Lonicera japonica flos is widely used as a pharmaceutical resource and a commonly-employed ingredient in healthy food, soft beverages and cosmetics in China. Sometimes, sulfur fumigation is used during post-harvest handling. In this study, a comprehensive comparison of the chemical profile between sun-dried and sulfur-fumigated samples was conducted by HPLC fingerprints and simultaneous quantification of nine constituents, including secologanic acid, along with another eight usually-analyzed markers. Secologanic acid was destroyed, and its sulfonates were generated, whereas caffeoylquinic acids were protected from being oxidized. The residual sulfur dioxide in sulfur-fumigated samples was significantly higher than that in sun-dried samples, which might increase the potential incidence of toxicity to humans. Meanwhile, compared with sun-dried samples, sulfur-fumigated samples have significantly stronger antioxidant activity, which could be attributed to the joint effect of protected phenolic acids and flavonoids, as well as newly-generated iridoid sulfonates.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.