Vitamin E (α‐, β + γ‐ and δ‐tocopherol) levels in plant oils

Aksöz, Elif; Korkut, Oğuzhan; Akşit, Dilek; Gökbulut, Cengiz

doi:10.1002/ffj.3585

Cited by 33 publications

(17 citation statements)

References 34 publications

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“…The vials were stored in the dark at 40 °C for a week and analyzed after 0.25 (6 h), 1, 2, 3, 5, and 7 days of storage. The ratio and temperature were selected on the basis of our preliminary studies and the literature [ 10 , 29 ]. The obtained results were compared with those of fresh bulk oils.…”

Section: Methodsmentioning

confidence: 99%

Antioxidant Effects of Hemp (Cannabis sativa L.) Inflorescence Extract in Stripped Linseed Oil

et al. 2020

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The ability of hemp (Cannabis sativa L.) inflorescence extract to counteract lipid oxidation was studied in stripped linseed oil. The ethanolic extract was characterized in terms of terpenes (6.00 mg/mL), cannabidiol (4.99% w/w), phenolic compounds (1.80 mg gallic acid equivalents (GAE)/mL), antiradical, and metal ion-chelating activities (50% effective concentration (EC50) of 2.47 mg/mL and 0.39 mg/mL, respectively). The stripped linseed oil, used as control (CO), was mixed with hemp extract (HO) or α-tocopherol (EO) at a ratio of 0.6% (w/w) and stored for 7 days in darkness at 40 °C. Hemp extract reduced the oxidation and lipolysis processes. At the end of the storage, HO showed a significantly higher level of α-linolenic acid (ALA; 26.64 g/100 g), lower peroxide value (PV) (21.19 meq O2/kg oil), and lower hexanal content (7.67 mmol/kg oil) than those found in the control. In contrast, EO showed a marked lipolysis (the free fatty acids increased by 42.57%) and a noticeable oxidation, since the ALA content decreased by 2.10% and a PV of 50 meq O2/kg oil was observed. This study demonstrates that hemp inflorescences can be used as a source of natural antioxidants in vegetable oils and lipid products to retard their oxidation, especially those characterized by a high degree of unsaturation.

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Section: Methodsmentioning

confidence: 99%

Antioxidant Effects of Hemp (Cannabis sativa L.) Inflorescence Extract in Stripped Linseed Oil

et al. 2020

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“…Plant oils are the richest sources of vitamin E. A comparison between seed oils highlighted that DPSO ranks fourth in terms of tocopherol content, after pomegranate (3483.4 mg/kg), wheat germ (3117.5 mg/kg), and fig (1400.2 mg/kg) seed oils [58]. Although date seeds are abundant, their uses have not been maximized for animal feed.…”

Section: Tocopherols Compositionmentioning

confidence: 99%

Assessment of Biochemical Composition and Antioxidant Properties of Algerian Date Palm (Phoenix dactylifera L.) Seed Oil

Harkat

Bοusba

Benincasa

et al. 2022

Plants

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Date palm (Phoenix dactylifera L.) trees are largely cultivated across the Algerian oases; they are principal sources of remuneration and the economic basis for residents of these areas. Date palm fruits are rich sources of essential nutrients, vitamins, minerals, and dietary fibers, with many potential health benefits, yet there are few studies on the chemical composition and biological properties of date palm seed oil. In this study, we present an in-depth characterization of the biochemical composition and antioxidant properties of date palm seed oil (DPSO) produced in Algeria. DPSOs of eight Algerian cultivars, Arechti, Degla-Baida, Deglet-Nour, Ghars, Haloua, Itima, Mech-Degla, and Tentbouchet, were investigated to determine their biochemical compositions and antioxidant properties. The results highlight the potential of DPSO as an alternative food and a natural resource, thanks to several important compounds having high antioxidant capacity. In particular, fatty acids and triacylglycerol (TAGs) analyses showed that oleic (42.74–50.19%), lauric (18.40–22.2%), and myristic (8.83–10.17%) were the major fatty acids, while 1-myristoyl 2-oleoyl 3-linoleoyl glycerol, 1-linolenoyl 2-oleoyl 3-linoleoyl glycerol, 1-2-linolenoyl 3-linoleoyl glycerol, and 1-linolenoyl 2-myristoyl 3-linoleoyl glycerol were the major TAGs. Biophenols and tocopherols analyses revealed the presence of important compounds, such as catechin (22.04–24.92 mg/kg), vanillin (10.67–23.98 mg/kg), and α-tocopherol (443.59 mg/kg), at high remarkable levels. Therefore, a comparison with the literature data concerning other seed oils, including olive oil, confirms that DPSO can be considered a high-quality oil, from a biochemical and biological point of view.

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“…292 Plant oils are an excellent source of vitamin E, with pomegranate seed, wheat germ and fig seeds showing some of the highest levels in plants. 293 The climate in which plants containing vitamin E have also been investigated and therefore the process of growing plants for vitamin E harvesting can be optimised based on the conditions. Some plant species have evolved natural over-expression of key enzymes involved in the biosynthesis of vitamin E and therefore classical breeding has also been used to create species with the ability to produce larger amounts of vitamin E. 294…”

Section: Anti-ageing Ingredientsmentioning

confidence: 99%