Influence of the protein distribution of maize endosperm on ruminal starch degradability
- 1 February 2000
- journal article
- research article
- Published by Wiley in Journal of the Science of Food and Agriculture
- Vol. 80 (3), 404-408
- https://doi.org/10.1002/1097-0010(200002)80:3<404::aid-jsfa541>3.0.co;2-z
Abstract
This study was aimed at determining the influence of the protein distribution of maize endosperm on ruminal starch degradation using 14 maizes differing in endosperm texture (eight dent and six flint maizes). Ruminal starch degradability was determined by an in situ technique on ground samples with a particle size of 3 mm. The distribution of endosperm proteins was assayed by a method based on their differential solubilities in solvents. The (α,β,δ)-zeins and the true glutelins were the predominant proteins in the endosperm. The (α,β,δ)-zeins (66.1 and 70.1 g kg−1 of recovered protein for dent and flint types respectively) and the true glutelins (21.8 and 18.4 g kg−1 of recovered protein for dent and flint types respectively) were related to the vitreousness, ie the ratio of vitreous to floury endosperm. Ruminal starch degradability averaged 619 and 462 g kg−1 for dent and flint maizes respectively. It was correlated negatively with the (α,β,δ)-zeins and positively with the true glutelins. The (α,β,δ)-zeins located in the protein bodies should limit the accessibility of starch granules to ruminal micro-organisms and, as a consequence, the ruminal starch degradability. © 2000 Society of Chemical IndustryKeywords
This publication has 15 references indexed in Scilit:
- Influence of the Biochemical and Physical Characteristics of the Maize Grain on Ruminal Starch DegradationJournal of Agricultural and Food Chemistry, 1998
- Influence of genotype and stage of maturity of maize on rate of ruminal starch degradationAnimal Feed Science and Technology, 1997
- Starch utilization by ruminants: from basics to the bunk.Journal of Animal Science, 1997
- The effect of grain source and grain processing on performance of feedlot cattle: a review.Journal of Animal Science, 1997
- A Simple and Rapid Procedure for Hydrolyzing Minute Amounts of Proteins with AlkaliAnalytical Biochemistry, 1996
- Microbial fermentation of cereal grains in vitroAustralian Journal of Agricultural Research, 1994
- Factors Affecting Starch Digestibility with Special Emphasis on Sorghum and Corn1Journal of Animal Science, 1986
- Limits to Starch Digestion in the Ruminant Small Intestine1,2Journal of Animal Science, 1986
- Distribution and amino acid composition of protein groups located in different histological parts of maize grainJournal of Agricultural and Food Chemistry, 1980
- The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passageThe Journal of Agricultural Science, 1979