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Unexploited Thapsia garganica , Orlaya maritima , and Retama raetam Seeds: Potential Sources of Unsaturated Fatty Acid and Natural Antioxidants
Author(s) -
Tlili Nizar,
Mejri Houda,
Lajnef Houda Ben,
Feriani Anouer,
Khaldi Abdelhamid,
Nasri Nizar
Publication year - 2015
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-015-2673-9
Subject(s) - chemistry , gallic acid , food science , quercetin , kaempferol , naringin , antioxidant , fatty acid , apigenin , linoleic acid , botany , flavonoid , organic chemistry , biology , chromatography
Total lipid contents, fatty acid compositions, phenolic profiles and antioxidants activities of seeds from Thapsia garganica , Orlaya maritima , and Retama raetam were investigated. The oil values were more than 26 %, except seeds of R. raetam (ca. 3 %). Unsaturated fatty acids accounted for the majority of the fatty acids (more than 75 %). Oleic and linoleic acid were the predominant fatty acids. Total phenolic compounds (24–104 mg GAE g −1 DR), total flavonoids (4–102 mg QE g −1 g DR), total tannins (28–85 mg GAE g −1 DR) and condensed tannins (0.62–131 mg CE g −1 DR) were also determined. The antioxidant activities using different assays were evaluated. The predominant detected classes were the phenolic acids (42–85 %) and the flavonoids (11–48 %). The major phenolic acids were caffeic, trans ‐4‐hydroxy‐3‐methoxycinnamic, p ‐coumaric, and gallic acid. The predominant flavonoids were quercetin, luteolin, naringin, apigenin, and kaempferol. This study brings attention to the medicinal importance of these species as a source of oil and antioxidant molecules.