Faculty of Biotechnology and Food Sciences in Nitra Journal of Microbiology, Biotechnology and Food Sciences 1338-5178 special issue 3 (Food Sciences) vol. 4 2015-02-02 2015-02-02 CHANGES IN AMARANTH POLYPHENOL CONTENT DURING THE DIFFERENT VEGETATION PHASES 177 180 EN Alena Vollmannová Alena Vollmannová Eva Margitanová Eva Margitanová Judita Bystrická Judita Bystrická Tatiana Bojňanská Tatiana Bojňanská Dana Urminská Dana Urminská Iveta Čičová Iveta Čičová Michaela Benková Michaela Benková Total content of polyphenols was investigated in different anatomical parts of amaranth during different growth periods. Five amaranth cultivars were included in the experiment (Amaranthus hypochondriacus L.: cultivars Annapurna and Koniz, Amaranthus caudatus L.: cultivar Oscar Blanco, Amaranthus cruentus L.: cultivars Golden Giant and Rawa). Analysis were done in 4 growth phases: phase I. – intensive stem growth, phase II. – formation of the flowers and pollination, phase III. – milky ripeness, phase IV. – full ripeness. Based on the determined total polyphenol content in amaranth it is possible to create this anatomical part order: leaves > flowers > seeds > stems. No statistically significant differences were confirmed between phases I., III. and IV. On the other hand the total polyphenol content in amaranth determined in growth phase II. was significantly different in comparison to other growth phases. Statistically significant differences in polyphenolic content were confirmed between all investigated anatomical parts of amaranth.
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