THE DIGESTIVE PROCESSES OF HAEMATOPHAGOUS INSECTS: III. INHIBITION OF TRYPSIN BY HONEY AND THE POSSIBLE FUNCTIONS OF THE OESOPHAGEAL DIVERTICULA OF MOSQUITOES (DIPTERA)

Abstract

Honey inhibits esterolytic and proteolytic activity of trypsin fromAedes aegypti,Culex pipiens quinquefasciatus, and cattle. The inhibitor is heat stable and only a portion of the inhibition capacity is lost from the honey by dialysis. Glucose, fructose, and sucrose have no effect upon trypsin but ascorbic acid and riboflavin are inhibitory while gluconic acid is an activator. Nectar from lilies but not from honeysuckles inhibitsC.pipiens quinquefasciatustrypsin.