Effect of the Growth Stage of False Flax (Camelina sativa L.) on the Phenolic Compound Content and Antioxidant Potential of the Aerial Part of the Plant

Abstract

The main by-product of false fl ax seeds are cakes, obtained after seed oil pressing, which can be exploited as a fatand protein-rich ingredient for animal nutrition [Berti et al., 2016]. However, false fl ax cake has also recently been considered as a valuable source of phenolic compounds for a potential use in selected foods or food formulations [Terpinc et al., 2012b; Rahman et al., 2018a, b]. C. sativa cake contains more phenolic compounds than its oil. Terpinc et al. [2012a] reported that the total phenolic content (TPC) in oil and cake was 9.1 and 1666 mg chlorogenic acid eq/100 g of dry matter (DM), respectively. The phenolic compounds identifi ed in cake and defatted meal included mainly fl avonoids and hydroxycinnamic acids [Terpinc et al., 2011; Rahman et al., 2018a]. Sinapine, the ester of sinapic acid and choline, has often been determined as the main phenolic compound in false fl ax cake or meal [Salminen et al., 2006; Terpinc et al., 2011]. Hydroxybenzoic acids have also been identifi ed [Terpinc et al., 2012a; Rahman et al., 2018a], although Salminen et at. [2006] did not fi nd them in false fl ax seed meal. Condensed tannins are another class of phenolic compounds that have been determined in false fl ax cake [Matthäus & Zubr, 2000]. Rahman et al. [2018a] identifi ed several procyanidin dimers among these tannins. The phenolic compound profi le of false fl ax cake determines its signifi cant antioxidant activity [Matthäus, 2002; Quezada & Cherian, 2012]. Rahman et al. [2018b] showed

Sunflower (Helianthus annuus L.) Plants at Various Growth Stages Subjected to Extraction—Comparison of the Antioxidant Activity and Phenolic Profile

“…These coefficients amounted to 0.914 (TEAC/FRAP), −0.920 (TEAC/EC 50 ) and −0.931 (FRAP/EC 50 ) for the extracts and 0.964 (TEAC/FRAP) for the plant FM. Significant correlations between TPC, TEAC, FRAP and EC 50 were also found in a previous study, by means of principal component analysis, on extracts of the aerial parts of other plants (amaranth and false flax) collected at various growth stages [28,46].…”

Effect of Thymol Addition and Withdrawal on Some Blood Parameters, Antioxidative Defence System and Fatty Acid Profile in Rabbit Muscle

“…The Trolox equivalent capacity (TEAC) was determined in thymol and in the experimental feed according with the method described by Karamać et al [ 19 ] using the 2,2’ — Azinobis — (3 — Ethylbenzthiazolin — 6 — Sulfonic Acid (ABTS •+ ) decolorization assay. The results were expressed as mmol Trolox equivalents (TE) per g. Thymol evaporation in the feed was analysed every week during thymol application using High — Performance Liquid Chromatography HPLC according to the modified method of Pisarčíková et al [ 20 ].…”

Variation in the Accumulation of Phytochemicals and Their Bioactive Properties among the Aerial Parts of Cauliflower

“…The profile and content of phytochemicals in plants are usually influenced by plant variety, organ, developmental stage, drought stress, insect feeding and other genotypic and environmental factors [13][14][15][16][17]. Variation of GLS and other bioactive compounds in the edible part of cauliflower has been previously described [1,18,19].…”