Method for refining paprika red pigment

Abstract

The invention discloses a method for refining paprika red pigment. The method comprises the following steps of: dissolving capsicum oleoresin with distilled water; mixing ethanol with ammonia water to prepare a hot remover; adding twice quantities of hot remover into the capsicum oleoresin for stirring and separating to obtain the paprika red pigment; and adding 1-3 times of the quantity of the distilled water into the paprika red pigment to uniformly mix and deodorize for 2-3h under a vacuum condition to finish a refining process. By the method, each index of the paprika red pigment is effectively improved; a color value reaches 200-250; the capsaicine content is less than or equal to 0.005 percent; the acetone-insoluble substance content is less than or equal to 0.2 percent; and the solvent residues are less than 25 mg / kg without obvious characteristic smell. The used edulcoration agent, the hot remover and the deodorant are toxicity-free and harmless solvents, so that the method is simple in required equipment during the whole refining process, low in cost, simple in process and easy to operate, and lays a foundation for large-scale industrial production; and the exhaustion of waste gas and the drainage of waste water are substantially avoided.

Description

technical field [0001] The invention belongs to the field of natural organic chemistry, and in particular relates to a method for refining capsanthin. Background technique [0002] As colorants, natural plant pigments are widely used in industries closely related to human health, such as food processing, medicine and cosmetics. With the development of biotechnology, people pay more and more attention to the research and development of natural plant pigments, and their application prospects are very broad. [0003] Capsanthin is a natural food coloring with good safety, certain nutritional value and pharmacological effects. As early as the "Seventh Five-Year Plan" period, it was listed as one of the four natural pigments for key development by the state. In recent years, with the rise of people returning to nature, pursuing health and green consumption trends, those chemically synthesized pigments that were once widely used, despite their bright color, strong coloring power,...

AI Technical Summary

Problems solved by technology

Small-scale production using supercritical CO 2 Extraction deodorization, its advantage is that deodorization is thorough, as Chinese patent CN1267684A, after adding entraining agent several times, can remove peculiar smell preferably, but limit industrialization implementation with supercritical fluid technology; Chinese patent CN1272385C uses dehydrated alcohol and isopropyl The mixed solvent of alcohol is a deodorizer, which can also remove odors well, but there are problems such as large solvent consumption and long deodorization time