Hydrolysis of caseins by extracts of Cynara cardunculus precipitated by ammonium sulfate

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Silva, SV (Author) Other; Barros, RM (Author) Other; F. Xavier Malcata (Author) Other

Journal

Title: Journal of Food Science

Vol. 67 No. 5

Pages: 1746-1751

ISSN: 0022-1147

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-000-P6S

DOI: 10.1111/j.1365-2621.2002.tb08717.x

Abstract (EN): Polyacrylamide gel electrophoresis (in the presence of urea) and gel permeation chromatography were employed to assess the profile of hydrolysis of caseins and the activity of enzymes contributed by the flowers of the plant Cynara cardunculus on bovine caseins, after previous precipitation with ammonium sulfate or in a plain crude aqueous extract. Results indicated that the qualitative degradation profile of bovine caseins by plant enzymes (cardosins) remains essentially unchanged upon extraction, and quantitative analysis showed that the precipitated fractions had a higher coagulant-to-proteolytic activity ratio; hence, the results showed that inexpensive precipitation with ammonium sulfate can successfully be used as a purification method in the production of that plant coagulant in standardized form.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6