Changes in the content of polyphenols in barley grains and pea seeds after controlled accelerated ageing treatment
1997
Lachman, J. | Pivec, V. | Hosnedl, V. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic))
In three barley and three pea cultivars from two different localities changes in total polyphenol content and catechol, resorcinol and phloroglucinol type polyphenols caused by accelerated ageing test with increased temperature and moisture were investigated. The total polyphenols were determined by means of Folin-Ciocalteau reagent and catechol, resorcinol and phloroglucinol type polyphenols with p-dimethylaminocinnamaldehyde. The process of deterioration caused significant increase both total polyphenols and catechol, resorcinol and phloroglucinol type polyphenols in barley grains and total polyphenols in pea seeds, too. There were great differences in total polyphenol contents in barley grains (103.88 mg in 100 g fresh matter) and in pea seeds (32.55 mg in 100 g fresh matter). There were significant differences in total polyphenols contents and catechol, resorcinol and phloroglucinol contents among barley and pea cultivars and localities where the plants were cultivated.
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