不同处理方式对几种中草药亚硝酸盐含量的影响

The Nitrite Content of Several Medicinal Herbs by Different Treatments

[目的]研究不同处理方式对几种中草药中亚硝酸盐含量的影响。[方法]将分别采自田间、路边和荒野的羊蹄、萹蓄、车前草、益母草和蒲公英,经室温散放、恒温烘干和露天晒干3种不同方法处理后,再用格里斯试剂比色法测定煎煮时间对这几种中草药亚硝酸盐含量的影响。[结果]不同贮存时间及处理方式对中草药亚硝酸盐含量有明显影响。室温散放的条件下,这几种中草药亚硝酸盐含量均随储存时间的延长而明显增加;采自路边的中草药经晒干或烘干处理后,亚硝酸盐含量均随煎煮时间的延长而增加。[结论]为提高中草药的药用安全性,宜现采现用,对贮存时间和煎煮时间不同中草药各有要求,在实际操作中需要注意。

[ Objective J To study effects of different treatments on the nitrite content of several medicinal herbs. [ Method]Rumex japomcus Houtt. , Polygonum aviculare Linn. , Plantago asiatica E. , Leonurus japonicus Houtt. and Taraxacum were collected from field, roadside and wilderness. Through three different treatments including scattered in the room temperature, dryed in constant temperatures, and open-air dried, then measure the effect on the nitrite content by Griess reagent colorimetric method. [ Result] Different storage time and treatment have significantly effect on nitrite content of medicinal herbs, the content were significantly increased with storage time raised under the conditions of room temperature, and the content of mdicinal herbs afer dried which collected from roadside also increased by decoction time prolonged. [ Conclusion] In order to improve the medicinal security, medicinal herbs should be fresh used, it should be pay attention to that the storage and decoction time are different for different medicinal herbs in the actual operation.