A - Human Necessities – 23 – C
Patent
A - Human Necessities
23
C
99/1, 195/40, 99
A23C 21/00 (2006.01) A61K 8/99 (2006.01) A61K 47/46 (2006.01) A61Q 11/00 (2006.01) C07K 14/325 (2006.01) C12N 1/14 (2006.01) C12N 1/16 (2006.01) C12N 1/20 (2006.01) C13K 5/00 (2006.01)
Patent
CA 1202812
ABSTRACT OF THE DISCLOSURE A process is provided for preparing a dry powder microbiological culture medium which can be reconstituted with water and autoclaved to form a clear, pH neutral culture medium capable of supporting the growth of micro- organisms under suitable growth conditions. The process comprises (a) rais- ing the pH of a dairy whey lactose permeate having a pH below 7 to a selected pH between pH 8 and pH 10 at which essentially all of the dissolved solids which would become insoluble when the permeate is autoclaved for 10-20 min- utes at 121 degrees C and 15 psi precipitate as microcrystalline solids; (b) separating the supernatant from the resulting precipitate to form a microcrystalline solid phase consisting essentially of the previously dis- solved solids; (c) removing components having a molecular weight above 100 kdal from the supernatant to form a lactose-rich supernatant which is essentially free of the dissolved solids; and (d) drying the resultant lac- tose-rich supernatant to form the dry powder microbiological culture medium. This dry powder microbiological culture medium is useful itself and as a basic formulation for preparing a wide variety of microbiological culture media. The precipitate formed is useful as a food grade additive to cause clouding, stabilization, emulsification, and thickening of food, pharmaceuti- cal, cosmetic, and other compositions.
436528
Davis Ann C.
Keggins Kathleen M.
Mays Thomas D.
Milch Robert A.
Sybert Edward M.
Borden Ladner Gervais Llp
Igi Biotechnology Inc.
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