A kind of comprehensive utilization method of the waste residue produced in oryzanol production process

Abstract

The invention provides a comprehensive utilization method of waste residue produced in the production process of oryzanol, comprising the following steps: 1) thermal melting; 2) reflux hydrolysis of alkali alcohol; 3) cold analysis separation; 4) recovery of solvent and solid-liquid separation; 5) Precipitation and Luo Han Guo pomace were mixed to prepare feed matrix; 6) filtrate was extracted and refined; 7) pH adjustment resin was decolorized; 8) acid separation was separated; 9) natural ferulic acid was prepared by drying. The invention realizes the synthesis of oryzanol production waste residues by preparing natural ferulic acid with a purity of more than 98% from 2-6% low-content oryzanol which is difficult to recycle in waste residues, and using the oil precipitation in the process as raw materials for preparing feed matrix Utilization; reflux saponification of waste residue in solvent dissolution, easy temperature control, high conversion efficiency and less damage; purification is achieved through alkali alcohol, alcohol water different systems and temperature difference, and lye extraction, and the resin only absorbs pigment without desorption to achieve decolorization ; Turning waste into wealth solves the environmental protection problem that the waste residue in oryzanol production is difficult to utilize.

Description

technical field [0001] The invention belongs to plant extraction and separation technology, and in particular relates to a method for comprehensive utilization of waste residue produced in the production process of oryzanol. Background technique [0002] Oryzanol exists in rice bran oil and is a mixture of ferulic acid esters mainly composed of triterpene (en) alcohols. It mainly acts on the autonomic nervous system and endocrine center of the diencephalon, can adjust autonomic nervous function, reduce endocrine balance disorders, and improve symptoms of mental and nervous disorders. It also has various physiological functions such as lowering blood lipids, reducing liver lipids, preventing lipid oxidation, and anti-oxidation. In addition, it also has the effect of resisting arrhythmia, which can reduce the excitability of myocardial muscle by regulating the function of autonomic nerves. The lipid-lowering effect of oryzanol can also improve the blood supply of the myocard...

AI Technical Summary

Problems solved by technology

[0018] The above two patents are saponification reactions carried out in the non-dissolved state of the material. Since the material cannot be dissolved in the aqueous alkali solution, the contact area between the material and the alkaline water is limited. While part of the material is hydrolyzed, it is not contacted and protected by concentrated alkali. Part of the material is destroyed, which seriously affects the hydrolysis effect and conversion rate, and significantly increases the destruction rate

At the same time, when the concentrated alkali aqueous solution is heated by steam in production, it is often easy to heat up to 120 degrees, and there is a phenomenon that the temperature is too high and difficult to control, and the excessive temperature accelerates the destruction of oryzanol in the hydrolysis process