Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1979-8-29
pubmed:abstractText
Strains of Geotrichum candidum were isolated from the surface of a commercial sample of Limburger cheese and from raw milk. Growth of the isolates in an acidified tryptone-yeast extract medium was accompanied by a rise in the pH of the medium from 3.5 to above 7.0 Ammonia production, as indicated by Nesslerization, was associated with the deamination of glutamic and aspartic acids. The first reaction in the production of ammonia from glutamic acid, isomerization to beta-methylaspartic acid, required vitamin B12 and the second reaction, the deamination of beta-methylaspartic acid to mesaconic acid and ammonia, was dependent on magnesium and potassium. The conversion of aspartic acid to fumaric acid and ammonia required magnesium. These minerals were in sufficient amounts in the Limburger cheese for optimum deaminase activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-0302
pubmed:author
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
368-72
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Deamination of glumatic and aspartic acids by Geotrichum candidum.
pubmed:publicationType
Journal Article