DETERMINATION OF METHIONINE AND ITS OXIDES IN GELATIN

Authors
TANI S TANI T
Citation
S. Tani et T. Tani, DETERMINATION OF METHIONINE AND ITS OXIDES IN GELATIN, Journal of Photographic Science, 41(5), 1993, pp. 172-175
Citations number
15
Categorie Soggetti
Photographic Tecnology
Journal title
Journal of Photographic Science → ACNP
ISSN journal
00223638
Volume
41
Issue
5
Year of publication
1993
Pages
172 - 175
Database
ISI
SICI code
0022-3638(1993)41:5<172:DOMAIO>2.0.ZU;2-6
Abstract
Methionine, methionine sulphoxide and methionine sulphone in gelatin w ere determined simultaneously by hydrolysis with p-toluenesulphonic ac id and then HPLC using the o-phthalaldehyde method. The IAG gelatins, oxidized gelatins, heat-coagulable substances (HC) and sol fractions ( SF) of some gelatins were analyzed. Almost all the gelatins examined w ere found to have been oxidized. The oxidation ratios of the HC and SF were higher than the gelatins from which they were derived.