Quality analysis and heavy metal content evaluation of Gastrodia elata
In order to explore the quality,heavy metal content,and risk of Gastrodia elata,21 Gastrodia elata tubers from different planting bases were used as materials to determine the water content,extract,total content of Gastrodia elata extract and p-hydroxybenzyl alcohol,residual sulfur dioxide,total ash content,and heavy metal content such as lead,cadmium,arsenic,mercury,and copper.The single factor pollution index method and Nemerow index method were used to comprehensively evaluate the heavy metal pollution in 21 Gastrodia elata samples.The results showed that the moisture content,extract content,total amount of gastrodin and p-hydroxybenzyl alcohol,sulfur dioxide residue,and total ash content of most Gastrodia elata samples all met the limit values specified in the 2020 edition of the Chinese Pharmacopoeia;the heavy metal content of lead,cadmium,arsenic,mercury,and copper in Gastrodia elata samples from various bases was lower than the limit values specified in various planting bases of Gastrodia elata,the single factor pollution index of 5 heavy metals was all below 0.7,with a comprehensive index range of 0.08-0.52.The heavy metal pollution status was all at a safe level.
Gastrodia elataextractsulfur dioxideheavy metalNemero index method
NETL
NSTL
万方数据
