METHOD FOR EXTRACTING CHLOROGENIC ACID FROM EUCOMMIA LEAVES

摘要

Provided is a method for extracting chlorogenic acid from Eucommia leaves, comprising the following steps: a, weighing of Eucommia leaves; b, water extraction; c, pre-treatment; d, filtration; e, loading on a macroporous adsorbent resin; f, concentrating; g, drying: spray drying, an air inlet temperature being 150^oC - 200^oC, and an air outlet temperature being 50^oC - 90^oC, thereby obtaining a chlorogenic acid crude product. The present invention uses water extraction, pre-treatment, loading on a macroporous adsorbent resin column, concentrating and drying to prepare the chlorogenic acid crude product. A water extract liquid is not concentrated, and is directly loaded on the macroporous adsorbent resin for purification treatment after being pre-treated, thereby solving the problem of decomposition caused by chlorogenic acid being concentrated in water for a long time and heated unstably, at the same time as omitting a concentrating process link to shorten the production cycle. In addition, a crude product having 20-60% of various specifications may be produced by controlling concentration parameters of different eluents.