Method for extracting nutmeg oil

Abstract

The invention provides a method for extracting nutmeg oil. The method comprises the following steps: (i) preparation of nutmeg powder; (ii) pretreatment of nutmeg powder; (iii) extraction; (iv) desolvation separation; (v) recovery of a liquid extractant; and (vi) residue collection. According to the invention, by using the unique dissolving property of the active ingredients of the nutmeg oil through the extractant, the nutmeg oil is extracted and separated, the recycling of a solvent is realized, and the utilization rate of the raw material can be increased; the extraction and separation process of the nutmeg oil can be completed under medium and low pressure conditions, the requirements for production equipment is reduced, safety performance of the production equipment is increased, andthe method is suitable for large scale production; the nutmeg has low cost, so that the production cost is obviously reduced. An extraction process is carried out under medium temperature conditions without destroying the active substance of the nutmeg oil, so that the flavor of the nutmeg can be completely preserved, the quality is good, and the oil yield is high, so that the problem of loss of the nutmeg oil and oxidative deterioration due to high temperature can be solved.

Description

technical field [0001] The invention belongs to a method for extracting natural vegetable oil, in particular to a method for extracting nutmeg oil. Background technique [0002] Nutmeg is the dry seed kernel of the nutmeg plant Nutmeg, warm in nature, pungent in taste, and returns to the spleen, stomach, and large intestine meridians. Warming middle-JIA and promoting qi, astringent intestines for relieving diarrhea. For spleen and stomach deficiency and cold, chronic diarrhea, abdominal distension and pain in the hospital, and vomiting due to lack of food. It is mainly produced in Malaysia, Indonesia, Sri Lanka and other countries. In addition, it is also produced in the West Indies. In addition, in the past, my country only cultivated nutmeg in Taiwan, Yunnan and other places. In recent years, it has been successfully introduced in a large area in Hainan, but most of the medicinal materials are imported. [0003] Nutmeg oil is a volatile oil extracted from nutmeg, which i...

AI Technical Summary

Problems solved by technology

The organic solvent extraction method uses n-hexane or ethanol as a solvent, heat reflux extraction method, the aromatic components are easy to degrade during the extraction, and the obtained essential oil also contains organic solvents, which affects the quality of the product

Moreover, there are many impurity components extracted by solvent method, such as resinous substances and waxy substances are extracted in large quantities, which seriously affects the quality of essential oils.

The composition of nutmeg oil obtained by steam distillation is not comprehensive enough, and some components cannot be extracted, resulting in the loss of the characteristic taste of nutmeg. At the same time, the yield of the product obtained by steam distillation is also low, about 6%.