La vitamine E : état actuel des connaissances, rôle dans la prévention cardio-vasculaire, biodisponibilité

Léger, Claude‐Louis

doi:10.1051/ocl.2000.0258

Cited by 14 publications

(8 citation statements)

References 44 publications

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“…They are able to reduce the risk of cardiovascular diseases, cancer and age-related macular degeneration [25]. In nature, four different derivatives of tocopherols and tocotrienols (a-, b-, g-, d-) can be found, differing in the methylation of the chroman ring.…”

Section: Tocopherolsmentioning

confidence: 99%

Virgin hemp seed oil: An interesting niche product

Matthäus

Brühl

2008

Euro J Lipid Sci & Tech

137

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Virgin hemp seed oil is not widespread on the market, although it is characterised by an interesting fatty acid composition with a high content of polyunsaturated fatty acids. Linoleic acid is the predominant fatty acid, which comes, together with α‐linolenic acid (18:3n‐3), to approximately 80% of the total fatty acids. From a nutritional point of view, up to 7% γ‐linolenic acid (18:3n‐6) and 2.5% stearidonic acid (18:4n‐3) are very interesting. The total amount of tocopherols is high between 80 and 110 mg/100 g, with γ‐tocopherol as the main tocopherol (85%). Due to the high amount of unsaturated fatty acids, hemp seed oil is very susceptible to oxidative deterioration, which results in a fast impairment of the oil during storage. In addition, the high amounts of chlorophyll in the oil due to harvesting of high amounts of immature seeds require light protection, which is often neglected because of merchandising purposes. The virgin oil is characterised by a nutty taste with a slightly bitter aftertaste. The use of virgin hemp seed oil is recommended during mild processing of food without heat.

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Section: Tocopherolsmentioning

confidence: 99%

Virgin hemp seed oil: An interesting niche product

Matthäus

Brühl

2008

Euro J Lipid Sci & Tech

137

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“…Hemp seed (HS, Cannabis sativa) cultivars with low tetrahydrocannabinol concentrations are a desirable source of bioactive substances. Hemp oil is also an important source of tocopherols, which can reduce cardiovascular disease, cancer and age-related macular degeneration [5]. The variability in oil, tocopherol and fatty acid levels in hemp varieties was described by Kriese et al [6], who examined seeds of 51 hemp genotypes from two consecutive harvests.…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Hemp Seed and Flaxseed on Growth Performance, Meat Fatty Acid Compositions, Liver Tocopherol Concentration and Bone Strength of Cockerels

Skřivan

Englmaierová

Taubner

et al. 2020

Animals

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The aim of the study is to determine the effect of hemp seed (HS) of the nonpsychotropic variety Futura and extruded flaxseed (EF) in the diet of cockerels on cockerel growth performance, breast muscle and liver α- and γ-tocopherol concentrations, breast muscle fatty acid concentrations and tibia strength. Five hundred and forty one-day-old male Ross 308 cockerels are equally allocated into six groups. Each group has three replicates of 30 cockerels in pens with litter. The formulated diets are isoenergetic (the metabolisable energy ranged from 12.4 to 12.8 MJ/kg) and isonitrogenic (the protein concentration ranged from 209.7 to 210.9 g/kg) and provided ad libitum. During the experiment, which lasts 35 days, the control group is fed a diet without EF or HS. Rapeseed oil was the lipid source in the control diet. The diet for the second group contains EF at 60 g/kg, the diet for the third group contains HS at 40 g/kg, and the diets for the fourth to sixth groups contain HS and EF at 30 and 60 g/kg, 40 and 60 g/kg and 50 and 60 g/kg, respectively. At the end of the experiment, 15 cockerels of average weight are slaughtered per group, and the breast muscle, liver and tibia bone are dissected for chemical analyses. The all dietary combination of HS and EF increases (p < 0.001) cockerel body weight (2375–2493 g) more than HS alone (2174 g) or EF alone (2254 g). A similar finding is observed for the diet composition and tocopherol content in the liver, but the doses of HS required to achieve this effect are higher (40 and 50 g/kg). The tocopherol content in the breast muscle is not influenced by the diet. The dietary combination of 60 g/kg EF and 40 g/kg HS results in the most promising findings of the experiment, since it leads to the lowest n-6/n-3 polyunsaturated fatty acids ratio (p < 0.001; 1.75). Incorporation of HS into the diet increases cockerel tibia strength (p < 0.001), which is of great practical importance due to the frequent occurrence of limb fractures. To conclude, the dietary supplementation with 40 g/kg HS and 60 g/kg EF improves cockerel performance, meat and bone quality and deposition of α-tocopherol in the liver.

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“…The potential health benefits of these two polyunsaturated FA (PUFA) are interesting owing to their anti-inflammatory, antithrombotic, antiarrhythmic and hypolipidemic properties [8]. Hempseed oil also contains appreciable amounts of tocopherols, which are reported to exhibit antioxidant activity [2,9]. The presence of cannabidiol (CBD) in hempseed oil is generally linked with its anticonvulsive, anti-epileptic, and antimicrobial attributes [10,11].…”

Section: Introductionmentioning

confidence: 99%

Physicochemical studies of hemp (Cannabis sativa) seed oil using enzyme‐assisted cold‐pressing

Latif

Anwar

2009

Euro J Lipid Sci & Tech

116

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The effects of enzyme-assisted cold-pressing (EACP) on the physicochemical attributes of Cannabis sativa (hemp) seed oil were investigated using five enzyme preparations: Protex 7L, Viscozyme L, Kemzyme, Feedzyme, and Natuzyme. The oil contents (28.4-32.8%) offered by the enzyme-treated hempseeds were found to be significantly (p ,0.05) higher than that determined for the control (26.7%). The protein, fiber, and ash contents of the seeds were unaffected by the enzyme treatment. There were no significant (p .0.05) variations observed for the values of iodine number, refractive index, density, unsaponifiable matter and fatty acid composition between the enzyme-extracted and control hempseed oils. The levels of saponification value, free fatty acids, iodine value and peroxide value were slightly varied between the oils tested. The color intensity of the enzyme-extracted oils was also higher than that of the control oil. A relatively higher level of tocopherols (724.4-788.8 mg/kg) was observed in the enzymeextracted oils compared to the control (691.2 mg/kg), showing an enhancement of ca. 4.8-14.1% in the total tocopherols. The Rancimat profiles and sensory scores of the enzyme-extracted oils were noted to be improved compared to the control. The results of the present analysis (with respect to the control) showed that the enzyme added during the hempseed cold-pressing resulted in considerably higher oil yields, without adversely affecting the quality of the oil.

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La vitamine E : état actuel des connaissances, rôle dans la prévention cardio-vasculaire, biodisponibilité

Cited by 14 publications

References 44 publications

Virgin hemp seed oil: An interesting niche product

Virgin hemp seed oil: An interesting niche product

Effects of Dietary Hemp Seed and Flaxseed on Growth Performance, Meat Fatty Acid Compositions, Liver Tocopherol Concentration and Bone Strength of Cockerels

Physicochemical studies of hemp (Cannabis sativa) seed oil using enzyme‐assisted cold‐pressing

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