Method for extracting aucubin from eucommia bark

Abstract

The invention discloses a method for extracting aucubin from eucommia bark, and belongs to the technical field of aucubin extraction. The method includes the following steps: (1) performing coarse crushing on the fresh eucommia bark, putting the crushed eucommia bark into a sieve basket, immersing the whole basket into liquid nitrogen, and performing repeating for 2 to 3 times in the way; (2) drying the eucommia bark in the step (1) at low temperature, and performing crushing to obtain eucommia bark powder; (3) performing extraction on the eucommia bark powder by using a supercritical CO2 extraction process; and (4) allowing CO2 containing the extract to flow out from an extraction kettle to enter a separation kettle for decompression separation to obtain the eucommia bark aucubin. The method for extracting the aucubin from the eucommia bark provided by the invention avoids considering the loss of the aucubin during the extraction process of the eucommia bark, and improves the qualityand yield of the aucubin extracted from the eucommia bark.

Description

technical field

[0001] The invention relates to a method for extracting aucubin in natural plants, in particular to a method for extracting aucubin from eucommia bark. Background technique

[0002] Eucommia, also known as Bakelite, is a plant of Eucommiaceae. Eucommia contains very few free amino acids, but it contains a small amount of protein, which is a complete protein similar to most foods, and can be hydrolyzed to detect 8 kinds of amino acids necessary for the human body. Eucommia contains zinc, copper, iron and other trace elements And 15 kinds of mineral elements such as calcium, phosphorus, potassium, magnesium and other macro elements. Medicinal eucommia is the dry bark of Eucommia ulmoides, a rare tonic medicinal material in China. It is sweet in taste and warm in nature. It has the effects of nourishing liver and kidney, strengthening tendons and bones, regulating Chong Ren, consolidating meridian and preventing miscarriage. It can treat lumbago and leg pain...