Brush Border Enzymes
About 1-2 L of intestinal juice- clear yellow fluid- is secreted each
day.
Intestinal juice contains water and mucus- helps neutralize gastric
acid in chyme- and is alkaline with pH 7.6.
Both pancreatic and intestinal juices provide a liquid medium that
helps in the absorption of substances from chyme in the small
intestine.
Absorptive cells of small intestines synthesize brush border
enzymes in the plasma membrane of the microvilli.
α- dextrinase α- dextrins Glucose
Maltase Maltose Glucose
Sucrase Sucrose Glucose and
fructose
Lactase Lactose Glucose and
galactose
Enterokinase Trypsinogen Trypsin
Aminopeptidase Amino acids Amino acids
at amino and peptides
ends of
peptides
Dipeptidase Dipeptides Amino acids
Nucleosidases Nucleotides Nitrogenous
and bases,
phosphatases pentoses and
phosphates.
About 1-2 L of intestinal juice- clear yellow fluid- is secreted each
day.
Intestinal juice contains water and mucus- helps neutralize gastric
acid in chyme- and is alkaline with pH 7.6.
Both pancreatic and intestinal juices provide a liquid medium that
helps in the absorption of substances from chyme in the small
intestine.
Absorptive cells of small intestines synthesize brush border
enzymes in the plasma membrane of the microvilli.
α- dextrinase α- dextrins Glucose
Maltase Maltose Glucose
Sucrase Sucrose Glucose and
fructose
Lactase Lactose Glucose and
galactose
Enterokinase Trypsinogen Trypsin
Aminopeptidase Amino acids Amino acids
at amino and peptides
ends of
peptides
Dipeptidase Dipeptides Amino acids
Nucleosidases Nucleotides Nitrogenous
and bases,
phosphatases pentoses and
phosphates.
