| 摘要 |
1473487 Making sugars R J REYNOLDS TOBACCO CO 28 Nov 1975 [23 Dec 1974] 49060/75 Heading C2S [Also in Division C3] A dried enzyme-containing microbial cell aggregate capable of effecting enzymatic transformation of a substrate contacted therewith comprises microbial cells, polyelectrolytic flocculating agent and an oxide, hydroxide, phosphate or sulphate of Mg, Ca, Fe and/or Mn sufficient to produce increased hardness in the aggregate as determined by measuring the resistance to compression of 16-20 mesh particles of the aggregate which is sufficiently dry to permit milling and sieving thereof. Examples describe the treatment of microbial cells produced by fermentation of Arthrobacter NRRL B-3728 with MgO. The product was assayed for glucose isomerase activity. An analogous test was done on cells produced from Streptomycesalbus ATCC 21132, and Bacillus coagulans. In addition to the conversion of glucose to fructose, there is mentioned the conversion of lactose to a mixture of glucose and galactose.
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