A comparative study of cellulase and xylanase activity in freshwater crayfish and marine prawns

Crawford, Allison C., Richardson, Neil R., & Mather, Peter B. (2005) A comparative study of cellulase and xylanase activity in freshwater crayfish and marine prawns. Aquaculture Research, 36(6), pp. 586-592.

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Cellulase and xylanase digestive enzyme activities were compared in four freshwater crayfish (Genus Cherax) and three marine prawn (Genus Penaeus) species.Temperature and pH profiles for cellulase (endoglucanase)were found to be very similar in all species, with maximum activity occurring at 60oC and pH 5.0.Temperature and pH profiles for xylanase (endoxylanase)were also very similar in all cray¢sh species,with maximum activity occurring at 50oC and pH 5.0. Xylanase activity was not detected in the three prawn species examined. In addition, in vitro studies showed thatmost species were able to liberate glucose from carboxymethyl cellulose, indicating that cellulose substrates can be a source of energy for both crayfish and prawn species.

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ID Code: 8714
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal's website (see hypertext link) or contact the author.
Author contact details: p.mather@qut.edu.au
Keywords: cellulase, xylanase, Cherax, Penaeus, digestion, nutrition
DOI: 10.1111/j.1365-2109.2005.01259.x
ISSN: 1355-557X
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > PHYSIOLOGY (060600) > Animal Physiology - Systems (060603)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2005 Blackwell Publishing
Deposited On: 20 Jul 2007 00:00
Last Modified: 29 Feb 2012 13:13

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