| Literature DB >> 13624719 |
Abstract
Various purification procedures for folic acid were investigated. The criteria of purity were a negative Bratton-Marshall test and the absence of fluorescent spots on paper chromatograms. Since no method provided a pure product, a procedure consisting of cellulose column chromatography followed by filtration through charcoal was developed.Entities:
Keywords: FOLIC ACID
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Year: 1959 PMID： 13624719 DOI： 10.1126/science.129.3344.274
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728