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Advisor(s)
Abstract(s)
Two purified aqueous extracts of Centaurea calcitrapa, a plant from the Compositae family, were
shown to degrade bovine, ovine, and caprine milk caseinates. The corresponding hydrolysis patterns
were monitored by urea-polyacrylamide gel electrophoresis and compared with those of a commercial
mixture of chymosin and pepsin. The plant proteases degraded both Rs- and â-caseins more
extensively than the commercial rennet, thus yielding proteolytic patterns where different
specificities toward such substrates are apparent. The animal rennet was found to display the
greatest clotting power per milligram of protein but the least specificity toward ovine and caprine
caseins. It is, therefore, suggested that the said plant extracts be used as an alternative to
commercial animal rennets especially in the manufacture of caprine and ovine milk cheeses.
Description
Keywords
Centaurea calcitrapa Plant rennet Proteolysis
Citation
TAVARIA, Freni K... [et al.] - Degradation of Caseins from Milk of Different Species by Extracts of Centaurea calcitrapa. Journal of Agricultural and Food Chemistry. ISSN 1520-5118. 45:10 (1997) 3760-3765
Publisher
American Chemical Society