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Characteristics of aroma-forming mutants after prolonged storage in freeze-dried condition

, : Characteristics of aroma-forming mutants after prolonged storage in freeze-dried condition. Biologiya mikroorganizmov i ikh ispol' zovanie v narodnom khozyaistve: 3-13, 119

6 mutant strains of Streptococcus lactis subsp. diacetylactis, and 9 of S. acetoinicus, obtained by exposure to nitrosomethylurethane, UV radiation and ethylenimine singly or in combination were freeze-dried in 1969 and stored for 10 yr in evacuated sealed ampoules - for 7 yr at 4 deg C, and for the remaining 3 yr at room temp.

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