A pumpkin yellow pigment yeast product and preparation method thereof

Abstract

The present invention provides a pumpkin yellow pigment yeast product and a preparation method thereof. The invention is characterized in that a fermentation method is used for the preparation of a biological product containing pumpkin yellow pigment and food-yeast hydrolysate. The method comprises the specific steps of: (1) cultivating the food-yeast by fermentation to obtain a fermentation system; (2) adding a pretreated pumpkin pulp in the fermentation system, and continuing to ferment; (3) conducting solid-liquid separation on the fermentation product obtained in the step (2) to obtain a pumpkin pigment clarified liquid; (4) adding purified water to the solid separated from the step (3) to resuspend the yeast mycelium to obtain a yeast enzymolysis liquid; and (5) concentrating, merging and drying the yeast enzymolysis liquid to obtain a solid powder composite pumpkin pigment yeast biological product. The preparation process is simple and pollution-free, the pigment release degree of yellow pigment is high, and the prepared product has high edible security and rich nutrition.

Description

Technical field [0001] The invention belongs to the field of food processing, and more specifically relates to a composite product of pumpkin pigment and edible yeast and a preparation method thereof. Background technique [0002] Pumpkin pulp is rich in polyphenolic flavonoids, such as α-carotene, β-carotene, γ-carotene, and lutein. β-carotene can be converted into vitamin A at any time in the human body. Lutein and zeaxanthin can protect the retina of the eye, and thus play a key role in the prevention and treatment of degenerative eye diseases. At the same time, pumpkin is also rich in dietary fiber, which plays an important role in the health of the digestive system and rectum. At the same time, dietary fiber is also beneficial for maintaining weight and diabetes. Pumpkin seeds are rich in strong antioxidants, minerals and omega-3 fatty acids. It also contains elements such as magnesium, zinc, copper, amino acids, manganese, and selenium. The yellow pigment contained the...

AI Technical Summary

Problems solved by technology

[0005] The existing pumpkin pigment extraction methods all involve the use of organic solvents (ethanol, acetone, ether, etc.), the extraction process requires high temperature, and the extraction and recovery of the extract solution are also required. The disadvantages are that it is not environmentally friendly and requires energy consumption. High, low extraction rate, easy to cause environmental pollution

[0006] In the prior art, there is no literature report on the technical scheme of directly releasing pumpkin pigment and the preparation of biological products through microbial fermentation.