A kind of preparation method of moss absolute oil with low as content

Abstract

A preparation method of low-As-content tree moss absolute oil comprises the following specific steps that 1, a tree moss raw material is soaked with water of 15-30 times of the amount of the tree moss raw material for 0.5 -2 hours, the soaked tree moss raw material is naturally air-dried, 100-mesh screening is performed after smashing, extraction is performed by using 65%-95% ethyl alcohol or petroleum ether, an extract is concentrated till no solvent is evaporated after extraction, and tree moss extract is obtained; 2, 95% ethyl alcohol 3-6 times of the mass of the extract is added to the tree moss extract for redissolution, freezing is performed at the temperature of 10-30 DEG C for 8-24 hours after full stirring and dissolution, insoluble substances are filtered out, the solution is concentrated till no solvent is dissolved, and the low-As-content tree moss absolute oil is obtained. The preparation method has the advantages that the operation is simple, the As content in the tree moss absolute oil is reduced under the coordinating effect of two treatment processes, no adverse influence is produced on the perfume quality of the final tree moss extract, the fragrance is purer, and the product quality is better. In addition, a preparation method is low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the extraction technology of natural spices, and in particular relates to a preparation method of tree moss absolute with low As content. Background technique [0002] Tree moss, also known as cluster tree flowers, tree cauliflower, epiphytic lichens, is mostly found on pine, fir, oak, spruce or fir trees, and has a unique natural green fragrance and strong resinous smell of liverwort. At present, tree moss extract is widely used in daily chemicals, food, and tobacco flavors, especially more and more tobacco companies use tree moss to give cigarette products a unique aroma style. [0003] Due to the simple structure and strong adsorption capacity of tree moss and other epiphytic bryophytes, it is easy to respond to pollution factors. In recent years, with the intensification of environmental problems such as air pollution, the problem of heavy metals in tree moss is more serious, especially the high content of As . Arsenic is...

AI Technical Summary

Problems solved by technology

Several other methods for removing As are mostly used in food, traditional Chinese medicine or water treatment. These fields are very different from the treatment of spices. The treatment of spices cannot cause a large loss of aroma components, nor can it change the aroma. However, it was found in the experiment that while removing As by adsorption, it has a great influence on the fragrance of the tree moss, and the fragrance of the final product may even be completely changed.