Abstract
The phenolic acid composition in grains of wild-type barley and proanthocyanidin-free mutants in differentant genes was studied. No qualititative differences were detected betweenant mutants and their wild-types. Quantitative differences in phenolic acid content were small. The sum of the six most abundant phenolic acids varied between 5 and 12mg·100g·1 of barley (dry weight). Compared to proanthocyanidins and catechin in wild-type barley, the amount of acetone extractable phenolic acids is small, and the presence of simple phenolic acids in proanthocyanidin-free mutants of the genesant 17 andant 18 cannot explain the high polyphenol values measured according to the method of Jerumains in beers produced from these mutants. Tests according to Jerumanis of fractions obtained from hydrolysed barley grain extracts by HPLC, revealed that the highest polyphenol values were obtained in fractions containing compounds related to flavones. These compounds are more abundant in mutants of the genesant 17 and 18 than in mutants of the geneant 13.
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Abbreviations
- CMC:
-
carboxymethylcellulose
- DHQ:
-
dihydroquercetin
- EDTA:
-
ethylenediamine tetraacetate
- HPLC:
-
high performance liquid chromatography
- TLC:
-
thin layer chromatography
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Accepted by:H. Klenow, E. Lund andS.O. Andersen
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Jende-Strid, B. Phenolic acids in grains of wild-type barley and proanthocyanidin-free mutants. Carlsberg Res. Commun. 50, 1 (1985). https://doi.org/10.1007/BF02910533
DOI: https://doi.org/10.1007/BF02910533