Dynamics of polyphenolics formation in different plant parts and different growth phases of selected buckwheat cultivars

Abstract

The changes of dynamics of total polyphenolics formation in various anatomical parts (stems, leaves, flowers and seeds) of common buckwheat (Fagopyrum esculentum Moench.) during vegetation period were surveyed. Six cultivars were analysed: Pyra, Spacinska, Emka, Kasho, Jana C1 and Hrusowska. The content of total polyphenolics was evaluated in growth phase I. (formation of buds), in phase II. (at the beginning of flowering), in phase III. (full blossoming) and in phase IV. (full ripeness). The total polyphenolics content was assessed by using Folin-Ciocalteau assay spectrophotometrically on Shimadzu UV-1800. When evaluating all four anatomical parts of common buckwheat we can state that the flowers contained the highest concentration of total polyphenolics where the values were in range from 14.93 to 25.16 mg.g -1. In last phase (IV. phase) where stems, leaves, and seeds were evaluated, buckwheat leaves exerted the highest content of these compounds, and the values were in range from 68.74 to 90.27 mg.g -1. Maximal increase of total phenolics content was manifested in each variety in phase IV., i.e. at the end of the vegetation period. From the standpoint of the content of total polyphenolics in individual anatomical parts the cultivars Pyra, Hrusowska and Emka were the most suitable ones as functional foods.

Temporal, Plant Part, and Interpopulation Variability of Secondary Metabolites and Antioxidant Activity of Inula helenium L.

“…The concentration of phenolic compounds in a particular plant organ depends upon the phenolic synthesis in those organs. The variation in the quantity of these compounds relies on the difference in morphological and anatomical structures, as well as in the numerous physiological processes that occur in different plant organs [26].…”

INFLUENCE OF METEOROLOGICAL PARAMETERS ON THE YIELD AND CHEMICAL COMPOSITION OF COMMON BUCKWHEAT (Fagopyrum esculentum Moench)

“…Starch was determined by polarimetric method described by Ewers (ISO 6493), contents of lipids were determined by ISO 6492, contents of ash was determined by ISO 5984, and contents of cellulose was determined by Kürschner-Hanack (Kulić and Radojičić, 2011). The total phenolic contents of ethanolic extracts were measured by using of Folin Ciocalteau reagent as described by Bystrická et al (2010). Statistical analyses were made using SPSS 22 software program.…”

Organ-oriented phytochemical profiling and radical scavenging activity of Alcea spp. (Malvaceae) from Iran

“…Results showed that the content of anthocyanins markedly varied, as influenced by genetic structure of the examined taxa, environmental condition and the organ of choice [16][17][18][19]. As shown in Table 2, the flowers contained markedly higher TAC in comparison to the herbage of the examined taxa.…”