| Autor: |
Lars Gunnar Sillén, L. E. Ericson, Georg Andersson, H. Palmstierna, Einar Stenhagen, Monica Sjöstedt |
| Rok vydání: |
1959 |
| Předmět: |
|
| Zdroj: |
Acta Chemica Scandinavica. 13:1711-1712 |
| ISSN: |
0904-213X |
| Popis: |
Solutions of cyanocobalamin in a phosphate buffer of pH 5 were irradiated with doses of 2, 5, and 10 Mrad. Concomitant with a decrease in absorption maxima following irradiation was a tendency for the peaks in the 360 to 550 m mu regions to shift towards lower wave-lentihs. Calculattons indicated that 60% of the vitamin originally present was destroyed by a 2 Mrad dose at 361 m mu and according to microbiological assay approximately 85% was inactivated at 2 Mrad. Paper electrophoresis revealed the presence of at least four compounds in the irradiated solutions which could support the growth of E. coli 113-3. (C.J.G.) |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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