Endoglucanase activity in Neoteredo reynei (Bivalvia, Teredinidae) digestive organs and its content

Cellulolytic enzymes have been studied in several organisms, such as insects, molluscs and other organisms, which can have enzymes endogenously produced or by symbiotic microorganisms. These enzymes are responsible for breaking down the cellulosic material upon which these organisms feed, probably w...

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Bibliographic Details
Published in:	World journal of microbiology & biotechnology Vol. 34; no. 6; pp. 84 - 9
Main Authors:	de Moraes Akamine, Daniela Toma, de Almeida Cozendey da Silva, Daniel, de Lima Câmara, Gabriela, Carvalho, Thayane Vieira, Brienzo, Michel
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Netherlands 01-06-2018 Springer Nature B.V
Subjects:	Animals Applied Microbiology Biochemistry Biomedical and Life Sciences Biotechnology Bivalvia Bivalvia - chemistry Bivalvia - enzymology Cellulase - chemistry Cellulase - metabolism Cellulolytic enzymes Digestive system Endoglucanase Environmental Engineering/Biotechnology Enzyme Stability Enzymes Fermentation Gastrointestinal Tract - chemistry Gastrointestinal Tract - enzymology Gills Hot Temperature Hydrogen-Ion Concentration Insects Intestine Life Sciences Low temperature Mangrove trees Microbiology Microorganisms Mollusks Nutrients Organisms Organs Original Paper pH effects Saccharification Sugar Temperature requirements Teredinidae Teredinidae Cellulases Wood digestion Endo-β-1,4-glucanase Optimum activity
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Summary:	Cellulolytic enzymes have been studied in several organisms, such as insects, molluscs and other organisms, which can have enzymes endogenously produced or by symbiotic microorganisms. These enzymes are responsible for breaking down the cellulosic material upon which these organisms feed, probably with the aim of assimilating the sugars and nutrients. As Teredinidae bivalves grown in mangrove trees, this study aimed to measure endo-β-1,4-glucanase activity in different organs and its content. Endo-β-1,4-glucanase activity was detected in different organs of the Teredinidae bivalves , including gills and digestive organs tissues and its content. Moreover, organisms such as teredinids grow up inside wood and this process could perhaps be related to creating growth space. All the endoglucanase extracts, from organs tissues and contents, showed maximum activity at 40 °C. The maximum activity was observed at pH 5.5 for all the extracts, except for intestine tissue, which maximum was at pH 6. Moreover, some of the extracts showed a different profile of the activity as a pH influence, suggesting different distribution of enzymes over the digestive system of the teredinids. The results suggested that the endo-β-1,4-glucanase from Teredinidae could be applied in process that requires low temperature, such as, simultaneous saccharification and fermentation, since it presents lower optimum temperature in comparison to enzymes from terrestrial microorganisms.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0959-3993 1573-0972
DOI:	10.1007/s11274-018-2468-x