Publication Date
1989
Location
Nice France
Description
The effect of condensed tannins (proanthocyanidins) in ruminant nutrition is complex and needs further interdisciplinary reinvestigations with improved analytical methods. With the « cell rupture » theory of legume pasture bloat (Howarth et al., 1978), the role of condensed tannins seems to be secondary; they are acting as protein precipitants (Goplen et al., 1980) and inhibiting microbiological proliferation in cellular spaces (Howarth et al., 1982). Their assumed interference with digesting enzymes in vivo is doubtful (Mole and Waterman, 1985). On the importance of condensed tannins in nutrition, several reviews were published (McLeod, 1974; Tempel, 1982; Kumar and Singh, 1984 and Mehansho et al., 1987). Several methods have been suggested for the determination of condensed tannins, but none are problem-free. A new, simple, and specific method for the determination of soluble and insoluble condensed tannins in fresh leaf samples follows.
Citation
Telek, L, "Determination of Condensed Tannins in Tropical Legume Forages" (1989). IGC Proceedings (1985-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1989/session7/5)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Determination of Condensed Tannins in Tropical Legume Forages
Nice France
The effect of condensed tannins (proanthocyanidins) in ruminant nutrition is complex and needs further interdisciplinary reinvestigations with improved analytical methods. With the « cell rupture » theory of legume pasture bloat (Howarth et al., 1978), the role of condensed tannins seems to be secondary; they are acting as protein precipitants (Goplen et al., 1980) and inhibiting microbiological proliferation in cellular spaces (Howarth et al., 1982). Their assumed interference with digesting enzymes in vivo is doubtful (Mole and Waterman, 1985). On the importance of condensed tannins in nutrition, several reviews were published (McLeod, 1974; Tempel, 1982; Kumar and Singh, 1984 and Mehansho et al., 1987). Several methods have been suggested for the determination of condensed tannins, but none are problem-free. A new, simple, and specific method for the determination of soluble and insoluble condensed tannins in fresh leaf samples follows.
