The properties and distribution of three gastrointestinal disaccharidases in pig, including maltase, sucrase and lactase, were studied. Growing pigs of Du Jia, a hybrid race, were used. Small intestine was removed immediately after slaughter. The mucosa from stomach fundus, duodenum, upper jejunum and ileum was scraped with a blunt side of knife. Mucosa samples (about 0 5 g) was homogenized with 4 0 ml of cold maleate buffer (0 1 mol/L, pH=6 8). The supernatant was collected by centrifugation (3 0...
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