Process for extracting composite collagen from bones

Abstract

The invention provides a process for extracting composite collagen from bones, which belongs to preparation methods for nutrition and health products. Bone collagen molecules have a unique triple-strand supercoil structure; each of three polypeptide chains spirals leftwards to form a left-handed supercoil and then the three polypeptide chains engage with each other through hydrogen bonds to form a firm right-handed supercoil such that the triple-strand supercoil structure is formed; and the triple-strand supercoil structure is very stable and cannot be decomposed through low temperature heating and short-time heating. The invention provides the process for extracting collagen, and the process comprises the following steps of fragmenting bones, adding water into the bones, grinding an obtained mixture with a colloid mill to obtain minced bones with a particle size of 0.02 to 0.04 mm, pumping the minced bones into a fermentation tank with a pump, carrying out fermentation for 20 to 24 hours, adding hydrochloric acid to adjust the pH value of a fermentation product to be 5 to 7, adding air with a temperature of 95 to 120 DEG C into the fermentation tank by using an air pump and carrying out filtration to extract crystals when the crystals appear in the tank, wherein the crystals are composite collagen. Compared with the prior art, the invention has the following advantages: 1, the process is simple; 2, used time is short; and 3, high yield is obtained.

Description

technical field [0001] The invention belongs to a preparation method of nutraceuticals, in particular to a process method for extracting composite collagen from bones. Background technique [0002] Because bone is an ideal cheap protein resource, and the processed products have high economic value and nutritional health effects, poultry bones have been processed into bone powder, bone paste, etc. in foreign countries and applied to sausages, bread and other foods as Nutritional fortifiers may be further processed into health products for sale to meet people's growing needs. However, since the main component of protein in poultry bone is collagen, the collagen molecule has a unique 3-strand superhelical structure, that is, each of the 3 polypeptide chains forms a left-handed rotation to the left, and the 3 polypeptide chains are formed by Hydrogen bonds interlock to form a strong right-handed superhelix. This superhelix structure is very stable and cannot be decomposed by lo...

AI Technical Summary

Problems solved by technology

The hydrolyzed animal protein powder "yak bone strengthening powder" currently on the market is mostly produced by simple processing of by-products, waste bones, and minced meat from livestock and poultry processing plants. The resource utilization rate is low, and the ratio of calcium to phosphorus Unreasonable, not easy for human body to absorb

[0003] In the prior art, the extraction process of collagen basically adopts the extraction process of low temperature and long time soaking. Generally, 0.5M acetic acid is soaked at 4°C for 72-96 hours. The extraction time is long, and the yield is low and the energy consumption is high.