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Stable Foam Volume and Pectin Methyl Esterase Activity of Forage Mixtures 1
Author(s) -
Rumbaugh M. D.
Publication year - 1972
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1972.0011183x001200010016x
Subject(s) - trefoil , lotus corniculatus , esterase , pectin , forage , biology , medicago sativa , botany , point of delivery , volume (thermodynamics) , pectinesterase , food science , agronomy , enzyme , biochemistry , pectinase , physics , quantum mechanics
Alfalfa ( Medicago sativa L.), birdsfoot trefoil ( Lotus corniculatus L.), crownvetch ( Cornilla varia L.), sainfoin ( Onobrychis viciaefolia Scop.), and Kentucky bluegrass ( Poa pratensis L.) forage samples were tested individually and in two species component mixtures for stable foamproducing capacity and for pectin methyl esterase activity. Oven drying at 100 C reduced average foam volume by 18% of the wet sample mean. Species interacted in a nonadditive manner during all foam viscosity tests. The magnitude of the deviations from the averages of the component species responses was not as great as observed in an earlier investigation. Liquid viscosities of forage mixtures as expressed by their pectin methyl esterase activities were dependent solely upon the mean values of the component species tested alone. Results of the two types of empirical in vitro procedures were positively and significantly correlated, r̄ = .86.