Abstract：Blakeslea tripora strains is fermented for mycelium full of β-carotene, under the optimal fermentation conditions based on the previous research (the cultivation temperature 28 C, initial pH 6.5, the ratio 1:1 of positive and negative strains，inoculums concentration 6%,cell age 42 hours, the cultivation time 144 hours). The drying and preserving conditions were studied on the feedstuff. Results showed that adding 0.2% BHT could significantly lower the loss of β-carotene under the drying temperature 60C. In the process of preserving, adding the antioxidant BHT, keeping away from the light or storing in the refrigerating can protect the oxidation of β-carotene. The final product is mahogany without any unpleasant smell, emanating a delicate fragrance of carotene. The chief constituent of the products is 41.27% crude fat, 18.25% total sugar and 11.9% crude protein.
Keywords：β-carotene; fermentation conditions; preparation technology; collection
