Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Carbohydrases in two species of littorines
Student Author(s): Farnum, Corneila
Pages: 14
Location: Final Papers Biology 175H
Date: June 1964
Keywords: periwinkle
Abstract: 1. Enzyme extract of the esophagus and midgut of Littorina planaxis and Littorina scutulata were found to contain amylases capable of splitting starch and glycogen. Only one strain of bacteria isolated from these organs could digest starch. 3. Alpha glucosidase activity was detected on maltose and sucrose. The alpha 1,3 glucose galactose linkage in turnaose was split by the esophagus of both species. 3. Esophagus extracts showed galactosidase activity on agar and melibiose. 4. No cellulose digesting bacteria were detected. However, cellulase activity was found in the midgut extracts and cellobiase activity in both tissues of both species.