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US 4,055,666 AGranted
Animal feed yeast supplement from dried whey yeast bran process
AssigneeGeorge A. Jeffreys & Co., Inc.
InventorsGeorge A. Jeffreys, Jean L. Price, James F. Tobey
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Abstract
A method of producing an animal food supplement by growing a yeast that utilizes lactose on a mixture of wheat bran or husks from different grains which are mixed with dried whey, moistened with water, cooled and inoculated with yeast, a dairy culture used in making buttermilk, and Lactobacillus acidophilus, placed on perforated trays, then incubated for 12 to 24 hours at 27.degree. to 34.degree. C. and dried at 43.degree. C. and lower.
Claims6
A process for producing an animal feed supplement by growing a yeast that utilizes lactose, which comprises the steps of
- a. preparing a solid substrate mixture composed of bran husks supplemented with essential nutrients, and 10 to 21% dried whey typically containing 65 to 75% lactose;
- b. moistening said mixture to bring the water-substrate ratio within the range of 50/100 to 70/100, thereby providing a semi-solid substrate;
- c. pasteurizing the moistened mixture and then cooling it to at least 100.degree. F;
- d. inoculating the cooled mixture with a lactose utilizing yeast selected from a group consisting of Kluveromyces fragilis, Kluveromyces lactis, Torulopsis cremoris and Torulopsis spherica;
- e. said lactose utilizing yeast being mixed with a lactic culture selected from a group consisting of Lactobacillus acidophilus, Lactobacillus bulgaricus, Lactobacillus thermophilus, Streptococcus cremoris, and Streptococcus lactis, and
- f. incubating the inoculated mixture at humidities and temperatures conducive to the growth of the yeast for 12 to 24 hours.
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