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(A) Standards of p-nitrophenyl glucosides on RP-HPLC. The numbers refer to the glucoside chain length. The absorbance of the p-nitrophenyl group at 303 nm is shown in the ordinate. (B) Result from incubating one pair of salivary gland homogenate with 0.1 mM p-nitrophenyloctaglucoside at 0- and 90-min incubation. Note conversion of the octaglucoside to the maltoside derivative.
