Energy-saving preparation method for high-purity baical skullcap root extract

Abstract

The invention discloses an energy-saving preparation method for a high-purity baical skullcap root extract. The method mainly comprises the following steps: cleaning and selecting, enzyme deactivation and slicing, extraction and filtering, primary precipitation and filtering, refining and filtering, secondary precipitation and filtering, acid rinsing and drying, fusing and filtering, liquid medicine concentration, liquid medicine drying, medicine dreg processing and the like. According to the invention, a mechanical steam recompression concentration process is adopted for liquid medicine concentration; a combined drying process is adopted for liquid medicine drying; the method has the characteristics of energy conservation, consumption reduction and carbon emission reduction, as for each ton of baical skullcap root extract, 5-7 tons of standard coal is saved, 100-120 tons of waste water is processed, 80-100 tons of distilled water with the temperature of 40-50 DEG C is recycled, and the energy-saving indicator is improved by more than 30 percent. Due to the adoption of the method, zero emission of waste water and dregs of the manufacturing technology is realized; no external additive or organic menstruum is used in the extraction process of the baical skullcap root extract, and accordingly the cost is obviously saved, and the resource consumption is reduced.

Description

technical field [0001] The invention relates to a method for preparing an extract, in particular to a method for extracting substances from Scutellaria baicalensis. Background technique [0002] Scutellaria baicalensis is the dry root of Scutellaria baicalensis Georgi, a plant of the Labiatae family. It is widely distributed in my country and is produced in Heilongjiang, Jilin, Liaoning, Henan, Hebei, Shandong, Sichuan, Yunnan, Shanxi, Shaanxi, Gansu and Inner Mongolia. Scutellaria baicalensis mainly has the following functions: clearing heat and dampness, purging fire and detoxification, hemostasis, anti-abortion; it is used to treat mainly damp-warm, summer-dampness, chest tightness and nausea, damp-heat fullness, diarrhea, jaundice, lung-heat cough, high fever and polydipsia, Blood heat spits nosebleed, carbuncle sores, and fetal restlessness; Scutellaria baicalensis also has anti-inflammatory, anti-allergic, anti-microbial effects, antipyretic, antihypertensive, diuretic...

AI Technical Summary

Problems solved by technology

[0004] Up to now, in the reported preparation processes of Scutellaria baicalensis extract, single-effect or double-effect evaporators are mostly used in the concentration process, and the energy consumption is high; some preparation processes produce sewage without recycling, and the discharge of waste water and waste residues is large, which is harmful to the environment. Pollution; some preparation processes are complicated, the cost of extracting and separating baicalin is high, and the preparation process consumes a large amount of organic solvents such as ethanol

Some preparation processes are simple, but the product quality is unstable and cannot meet user needs

Images