Solid ocean red yeast preparation as well as preparation method and application thereof

Abstract

The invention discloses a solid ocean red yeast preparation which is mainly prepared from a composite protective agent and ocean red yeast bacterial sludge according to a mass ratio of (1.5-2.2):1, wherein the cell density of ocean red yeast in the solid ocean red yeast preparation is 200-400 billion / gram, the cell activity is 70-80%, and the protective agent comprises skim milk powder and cane sugar. The invention further discloses a preparation method of the solid ocean red yeast preparation, The preparation method comprises the following steps: firstly, performing high-density cultivation on the ocean red yeast in a cultivation mode of continuous liquid flow layer ventilation, and further drying by using a vacuum freezing drying method. According to the solid ocean red yeast preparation, the survival rate of the ocean red yeast can be increased to be 70-80%, the cell density in the preparation can be 200-400 billion / gram, and the preparation can be also used in aquatic product feeds as an additive as a product of the preparation is in a solid manner, long in expiration date and convenient to transport.

Description

technical field [0001] The invention relates to a solid marine red yeast preparation and its preparation method and application. Background technique [0002] Marine Rhodotorula is a single-celled eukaryotic organism that exists in the natural marine environment. It is rich in protein, glycogen, unsaturated fatty acids, animal larval growth hormone, and carotenoids mainly astaxanthin. Significantly increase the survival rate of cultured animal larvae, improve the effect of adult feeding, and can enhance the immunity of aquatic animals and reduce the amount of antibiotics. It is an excellent additive for ecological farming; in addition, it has good palatability and a cell size between 4 and 6 μm, which is very suitable Instead of traditional bait, single-celled algae are used as opening bait for marine animal larvae and supplementary bait for the entire larval stage. As a biological bait, marine red yeast is widely used in aquatic products such as fish, shrimp, crab, shellfis...

AI Technical Summary

Problems solved by technology

The fresh marine red yeast ecological bait is liquid, and the product has short shelf life and needs to be refrigerated, which is not conducive to long-term storage and long-distance transportation.

Patent Publication No. CN1415738A, the patent on May 7, 2003 is a patent "a starch adsorption fluidized bed drying process for solid marine red yeast"; Patent Publication No. CN1415739A, the patent on May 7, 2003 "A Production Method of Spray Drying of Solid Marine Red Yeast"; Patent Publication No. CN1415740A, the publication date is May 7, 2003 Patent "A Production Method of Bran Adsorption and Drying of Solid Marine Red Yeast", these inventions are described in the specification Disclosed in the culture method of liquid deep-layer aeration continuous fed-batch feeding of marine red yeast, spray drying or carrier adsorption fluidized bed drying production method is adopted for post-treatment, the cell density and viable bacteria rate of the solid marine red yeast product produced by these methods are 50% and 50% respectively. ~10 billion / gram, 20~30%, but there are also the following disadvantages: the solid marine red yeast product has low cell density, and the viable bacteria rate is not high enough