Phenolic compounds flaxseed

Amarowicz et al. (1994) studied the phenolic compounds of flaxseed meal extracted into 80% ethanol (v/v) by chromatographic techniques. Both hydrophilic and hydrophobic phenolic compounds were present. The separated hydrophilic fractions had a UV maximum absorption between 270 and 290 nm which was different from that observed for phenolic acids. Meanwhile, the tannin content of flaxseed meal was very low (125 to 137 mg/100 g of defatted meal) when compared to that of high glucosinolate rapeseed and canola (Shahidi and Naczk 1988 Shahidi et al., 1988 Wanasundara and Shahidi, 1994a). 

After hydrolysis, the other phenolic compounds with high maximum values in seeds were secoisolariciresinol (81.7-3236.7), matairesinol (0-52.0), lariciresinol (3.0-36.7), and pinoresinol (3.3-24.6) in flaxseed meal and sesamin (62.72), pinoresinol (29.3-47.1), matairesinol (1.1-39.3), and lariciresinol (9.5-13.1) in sesame seed meal. 

Hao, M. and Trust, B. 2012. Qualitative and quantitative analysis of the major phenolic phenolic compounds as antioxidants in barley and flaxseed huUs using HPLC/MS/MS. J. Sci. Food Agric. DOI 10.1002/jsfa.5582. 

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