Evaluation of Preservation and Processing Quality of Zunyi Gastrodia Elata
This paper discusses the best preservation method of gastrodia elata in Zunyi,in order to reduce the effect of processing on the quality of gastrodia elata.The effects of starch coating,sodium diacetate soaking and soil preservation on gastrodin content,p-hydroxybenzyl alcohol content,weight loss rate,hardness and color during storage of gastrodia elata were investigated.The influence of the key factors such as grinding temperature,particle size and method on the quality of gastrodia elata powder was investigated.The results showed that soil preservation had the best effect on the preservation of gastrodia elata in Zunyi,and the quality of gastrodia elata powder could be better maintained by drying at constant temperature and then grinding at low temperature.
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