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Dietary pectin and mango pulp effects on small intestinal enzyme activity levels and macronutrient digestion in grower pigs

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Abstract

The effects of refined pectin and mango pulp on macronutrient digestion and small intestinal enzyme activity were studied in grower pigs. Diets based on wheat starch with and without apple pectin or dried mango fruit pulp were fed to 30 grower pigs for 21 days. Pigs were euthanized two hours postprandially, and their gastrointestinal contents recovered. Starch and protein digestion as well as α-amylase activity were all increased in pigs fed pectin. In contrast, fat digestion, lipase and protease (trypsin) activities were all significantly reduced in these pigs. Pigs fed the mango fruit pulp diet had intermediate effects compared with pigs fed refined pectin and control diets. The data suggests that pectin has a significant effect on digestive enzyme activity and subsequent influence on macronutrient digestion. The fact that pectin caused either an increase (α-amylase) or decrease (lipase, protease) in enzyme activity in digesta, which either did (starch, lipid) or did not (protein) associate with residual nutrient differences illustrates the complexity of small intestinal responses to added fibre in diets.

Graphical abstract: Dietary pectin and mango pulp effects on small intestinal enzyme activity levels and macronutrient digestion in grower pigs

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Publication details

The article was received on 21 Apr 2017, accepted on 04 Jan 2018 and first published on 05 Jan 2018


Article type: Paper
DOI: 10.1039/C7FO00602K
Citation: Food Funct., 2018, Advance Article
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    Dietary pectin and mango pulp effects on small intestinal enzyme activity levels and macronutrient digestion in grower pigs

    A. M. Pluschke, B. A. Williams, D. Zhang and M. J. Gidley, Food Funct., 2018, Advance Article , DOI: 10.1039/C7FO00602K

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