Method for extracting saponin from soapberry pericarp

Abstract

The invention discloses a method for extracting saponin from soapberry pericarp. The method comprises the following steps of extracting saponin from the soapberry pericarp to prepare a soapberry saponin extracting solution; concentrating the soapberry saponin extracting solution by adopting a membrane concentration method to obtain a concentrated solution; adsorbing the concentrated solution withX-5 macroporous resin to obtain macroporous resin adsorbed with soapberry saponin; performing stepwise elution on the macroporous resin adsorbed with the soapberry saponin, and collecting the eluent;and performing membrane concentration and drying on the eluent to obtain the soapberry saponin. Through the method disclosed by the invention, the energy consumption is greatly reduced through low temperature by adopting membrane concentration, and a large amount of foam is prevented from being generated, and a solvent recovery rate is high; the non-polar X-5 macroporous adsorption resin is adopted for adsorption, the elution is easy, and the stepwise elution is adopted, so that the purity of the obtained soapberry saponin is high, the waste can be changed into valuable, and the economic valueis high; and the whole production process is simple to operate, energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of forest product chemicals, in particular to a method for extracting saponin from sapindus fruit peel. Background technique [0002] Soapberry, also known as Sapinberry, Sapindella oil, and Sapinberry, is a large deciduous tree. It is mainly distributed in the east, south and southwest of my country. It is commonly cultivated in temples, gardens and villages in various places. Sapindus root and fruit have the functions of clearing away heat and detoxification, reducing phlegm and relieving cough; the peel contains saponin, which can replace soap for washing. Sapindus saponin is a non-ionic surfactant with strong surface activity. It has good detergency and foaming properties and is non-toxic to the human body. It can be used in natural shampoos and various toiletries. [0003] Sapindus seed is rich in oil and is an ideal biodiesel raw material oil. Sapindus pericarp produced in seed processing is also a ve...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN2018111838434 discloses a method for two-phase extraction of sapindus saponin in Sapindus chinensis, but the stability of the two-phase system is not good, the added reagents are complicated, and the operation is cumbersome

Chinese patent CN2015101542897 is a method for extracting and refining Sapindus saponin, but the desorption of the highly polar resin used is difficult, and the regeneration of the resin is cumbersome

Chinese patent CN2017100580655 is a two-step method for preparing sapindus saponin, which uses a two-step method of macroporous resin and foam separation to extract and separate high-purity sapindus saponin, but the two-step operation is cumbersome.

The above patents are all concentrated by evaporation. Sapindus sapinsin is a surfactant, which will generate a lot of foam during the solvent evaporation process, which will cause serious problems in production and affect the further processing and use of the extract.