A method for removing a variety of harmful substances in capsanthin

Abstract

The invention belongs to the field of extraction of natural products, in particular to a method for removing various harmful substances in capsanthin. The method of the invention comprises the following steps: dissolving the capsanthin to be treated in an organic solvent, and then separating the hazardous substances through an organic solvent-resistant nanofiltration membrane; the organic solvent is acetone, vegetable oil extraction solvent or ethyl acetate one or more of them. The method of the invention has the advantages of simple process, high capsanthin yield, and a loss rate of less than 0.5% compared with the non-removal process. The method of the invention can remove a number of harmful components at the same time, including removing benzopyrene in capsanthin, and reducing the level of tens of ppb to <10 ppb; removing illegal dyes such as Sudan red and rhodamine B, from tens to several 100 ppb is removed to less than 10 ppb; pesticide residues are removed from tens of ppm to less than 20 ppb, meeting the quality requirements of high-end products, and the safety is greatly improved.

Description

technical field [0001] The invention belongs to the field of extraction of natural products, in particular to a method for removing various harmful substances in capsanthin. Background technique [0002] Capsanthin is an oily liquid obtained from red pepper through extraction technology, which is rich in natural carotenoids such as capsanthin and capsanthin, which exist in the form of esters with fatty acids. Therefore, capsanthin is an excellent fat-soluble pigment, which is widely used in food, daily chemical and medical coloring. [0003] Benzoapyrene, chemical formula: C 20 H 12 , which means BaP in English, is a kind of pentacyclic polycyclic aromatic hydrocarbons. Crystallized as a yellow solid, this substance is produced under incomplete combustion between 300 and 600°C. Benzopyrene is found in coal tar, which can be found in car exhaust, smoke from tobacco and wood burning, and charcoal-grilled foods. Benzopyrene, a mutagen and carcinogen, has been implicated in...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, adsorbents are usually used to adsorb and remove benzopyrene, total Sudan red, and rhodamine B. Common adsorbents include activated clay, activated carbon, or special adsorbents for firing, and adsorption resins. The characteristics of these adsorbents are often in the adsorption hazard. At the same time, some pigments will be adsorbed, and different adsorbents have different adsorption effects on different harmful substances. If similar technologies are used to directly adsorb capsanthin-related products to remove harmful substances, it will cause a large amount of capsanthin. Adsorption loss, no adsorbent that only adsorbs harmful substances but not capsanthin has not been found

For the removal of pesticide residues, at this stage, the pesticide residues in capsanthin are mainly concentrated in the light phase by molecular distillation to reduce the pesticide residues in the heavy phase, but the temperature of the molecular distillation process is high, the pigment loss is serious, and the energy consumption is high.