01566naa a2200265 a 450000100080000000500110000800800410001902400430006010000160010324500790011926000090019852008240020765000110103165000190104265000160106165000100107765000150108765000260110265000100112865000170113865000230115565000270117865300150120577300800122015221982025-07-23       1964    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1071/AR96402232DOI1 aBECK, A. B.  aThe oestrogenic isoflavones of subterranean clover.h[electronic resource]  c1964  aAbstract: A number of strains of subterranean clover has been examined for isoflavone content in an attempt to explain the differences of oestrogenic potency in sheep and cattle under field conditions. A method of thin-layer chromatography has been developed which allows a rapid semiquantitative estimation of the main isoflavones present in this species. The isoflavones are present in a combined form, probably as glycosides, and the free isoflavones are rapidly released after crushing the leaf. The percentages of formononetin, genistein, and biochanin A in the leaves are very much higher than reported by earlier workers and vary widely between strains. Moreover, the ratios of the isoflavones differ greatly among strains. The relevance of these plant data to the oestrogenic potency in the animal is discussed.  aCattle  aForage legumes  aIsoflavones  aSheep  aFisiologia  aLeguminosa Forrageira  aOvino  aReprodução  aTrevo Subterrâneo  aTrifolium Subterraneum  aIsoflavona  tAustralian Journal of Agricultural Researchgv. 15, n. 2, p. 223-230, 1964.