Milk and lactose-hydrolyzed milk

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Abstract
Seven females 18 to 26 years old (mean 23 years) who were lactose malabsorbers as determined by a lactose tolerance test were given two different test meals: 5 ml/kg body weight reconstituted nonfat dry milk and 5 ml/kg body weight reconstituted nonfat dry milk in which 92% of the lactose had been hydrolyzed to glucose and galactose. Lactose malabsorption was determined by the breath H2 test. Tests were done in duplicate for a total of 28 tests. Whether a 3-hr test period or a 5-hr test period was used, the average breath H2 response after the lactose-hydrolyzed nonfat dry milk test meals was significantly lower (P < 0.002) than the average breath H2 response after the nonfat dry milk test meals. There were significant differences among individuals responses (P < 0.06 for the 3-hr test period and P < 0.09 for the 5-hr test period), and no significant differences between duplicate test days.

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