Preparing method for thuja-sutchuenensis hydrolat product and application thereof

Abstract

The invention provides a preparing method for a thuja-sutchuenensis hydrolat product. The preparing method includes the following steps that (1) aged thuja sutchuenensis is cleaned and sliced, the obtained product is soaked for 16 hours to 24 hours with distilled water of 4 fold to 10 fold to be subjected to reduced pressure distillation, condensation is carried out, and oil-water mixed liquid isobtained; (2) the oil-water mixed liquid obtained in step (1) is subjected to standing and layering, and an oil phase and a water phase are separated, wherein the oil phase is huja-sutchuenensis essential oil, and the water phase is a hydrolat crude product; (3) the hydrolat crude product obtained in step (2) is subjected to membrane separation and purification, and the thuja-sutchuenensis hydrolat product is obtained, wherein in membrane separation, a nanofiltration membrane is used for filtering, and products on the concentrated water side are collected; the nanofiltration membrane of membrane separation is a polyamide membrane, and pressure during membrane separation is 0.8 MPa to 1.2 MPa. The thuja-sutchuenensis hydrolat product obtained with the method comprises cedrol ingredients inthuja-sutchuenensis essential oil, also comprises water soluble substances in a plant, has the low-concentration characteristic, is good in permeability, is easily absorbed by the skin, and can be directly used for a skin care product.

Description

technical field [0001] The invention relates to a preparation method of a thuja pure dew product, which belongs to the technical field of biological extraction. Background technique [0002] Platycladus orientalis (L.) Franco belongs to the green tree, Cupressaceae plant, also known as cypress, cypress, etc., is a special product of our country. Arborvitae has a long lifespan, and there are often ancient trees of hundreds of years or more. "Compendium of Materia Medica" defines cypress as "top-grade fragrant wood", and "Historical Records" even defines cypress as "the best of all trees". The arborvitae that grow on rocks or cliffs are commonly known as thuja. Because Thuja mostly grows in areas with poor nutrition and harsh environment, its root system winds among the rocks, so its wood density is high and oily. Thuja is mainly distributed in the Taihang Mountains, Qinling Mountains, and Daba Mountains in my country. The refined thuja essential oil is often used as an im...

AI Technical Summary

Problems solved by technology

However, the distilled liquid after extraction of thuja essential oil has a strong pungent smell, and it is also irritating to the skin when used as a skin care product, so it cannot be used as a pure dew product.

The pure dew purification method in the prior art cannot effectively remove the irritating components in the distillation stock solution

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