Method for extracting silymarin by using food-grade ethanol as an extracting solvent

Abstract

The invention provides a method for extracting silymarin by using food-grade ethanol as an extracting solvent. The method is characterized by comprising the following steps: (1) removing fatty oil from silybum marianum seeds; (2) grinding oil-pressed cake, and putting into an extraction tank; (3) injecting a proper amount of food-grade ethanol from the top end of the extraction tank; (4) putting an extracting solution which is immersed with cake powder into an evaporation tank after static immersion, and injecting a fresh solvent into the charge layer in the extraction tank from the top end of the extraction tank to dynamically balance solvents flowing in and out of the extraction tank; (5) dynamically extracting; (6) concentrating; (7) stopping concentrating until the density is 1.2g/ml, and transferring fluid extract obtained by concentration into an extract washing machine; (8) degreasing for the second time; (9) baking; (10) grinding, and screening products with different specifications for users. According to the method, food-grade ethanol is used as an extracting agent instead of chemical raw materials in the prior art, so that obstacles in the march of silymarin forward to the field of health foods are cleared.

Description

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AI Technical Summary

Benefits of technology

The technical effect that this new process solves by eliminating certain chemicals from an extraction agent used during production or processing it's use. This makes it possible to make some types of nutrients like silymeerin inside meals without containing any harmful substances found on their ownerself.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to produce pure yarrow seed oil (YL) without containing harmful ingredients like Silymeerae Benthispidium Seabrightness Stabilizing Forsythaginaceae Boletus Anibe varies among different plants grown throughout Western Hemisphere countries including India. Existing methods involve collecting crude oils obtained through traditional techniques involving burning roots collected during harvesting operations on land near sources where water supply may be limited due to environmental concerns associated therewith. Therefore, new solutions must address issues related to current extractions technologies while maintain their safety features.