Estudos sobre a dosagem microbiologica das vitaminas do complexo B - II. Niacina
The microbiological assay method of Snell and Wright for niacine was studied and some modifications of the basal medium were proposed. A maximal growth of the "Lactobacillus arabinosus" was obtained by the addition to the basal medium of 25 mg % asparagine and increasing the percentages of glucose and sodium acetate. Liver and yeast extracts were assayed satisfactory and the niacine added was recovered quantitatively.
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| Main Authors: | , |
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| Format: | Digital revista |
| Language: | Portuguese |
| Published: |
Instituto Oswaldo Cruz, Ministério da Saúde
1945
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761945000100013 |
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| Summary: | The microbiological assay method of Snell and Wright for niacine was studied and some modifications of the basal medium were proposed. A maximal growth of the "Lactobacillus arabinosus" was obtained by the addition to the basal medium of 25 mg % asparagine and increasing the percentages of glucose and sodium acetate. Liver and yeast extracts were assayed satisfactory and the niacine added was recovered quantitatively. |
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