Trends in the chemistry and technology of lipids

Boelhouwer, C.

doi:10.1007/bf02543540

Cited by 22 publications

(13 citation statements)

References 36 publications

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“…The increased interest in the use of vegetable oil as a replacement for or extender of diesel fuel [7] might be due to the realization that fossil reserves could be exhausted or become shorter in supply and are not renewable. [8] Thus timely efforts directed at looking for alternative sources of food/feed and fats/oils among the less popular cultivars should be considered with renewed impetus.…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition and Fatty Acid Profile of the Lipid Fractions of Selected Nigerian Indigenous Oilseeds

Oyekunle

Omode

2008

International Journal of Food Properties

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Seeds of Cucumeropsis edulis, Hevea brasiliensis, Hura crepitans, Jatropha curcas, Khaya ivorensis and Citrus sinensis were evaluated for their proximate composition, chemical properties and fatty acid profiles. The moisture contents of the seeds ranged from 5.3 to 9.0% while the oil content was between 32.5% for Cucumeropsis edulis and 48.3% for Khaya ivorensis. The ash content ranged between 3.6 and 5.0%. Protein content ranged from 15.8 to 45.9% while the fibre value was in the 8.2-20.5% range. Carbohydrate content varied between 2.4 and 15.4%. The seeds were rich in potassium (349.0-468.6 mg/g of seed) and magnesium (83.7-150.19 mg/g of seed). The extracted oils had saponification value between 202.0 and 210.4; iodine value, 75.6 to 148.2; peroxide value, 4.7 to 13.3; and unsaponifiable matter content, 0.7 to 1.7%. The major fatty acids identified were oleic (14.6-72.1%) and linoleic (10.6-96.3%). Hura crepitans oil was characterized by a high content of linoleic acid (96.3%). The fuel value (Hm) of the extracted oils ranged from 8276.6-8433.2 kJ/kg.

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Section: Introductionmentioning

confidence: 99%

Chemical Composition and Fatty Acid Profile of the Lipid Fractions of Selected Nigerian Indigenous Oilseeds

Oyekunle

Omode

2008

International Journal of Food Properties

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“…The studied extract was characterized by a polyunsaturated/saturated (P/S) ratio of 0.44 inferior to that of olive oil (0.92). Oleic and linoleic acids are extremely important in nervous cell construction because they have fundamental role in cardiovascular diseases prevention …”

Section: Resultsmentioning

confidence: 99%

Hexane Extract of Echinops spinosissimus Turra subsp. spinosus from Tunisia: A Potential Source of Acetylated Sterols – Investigation of its Biological Activities

Bouattour

Fakhfakh

Dammak

et al. 2016

Chemistry & Biodiversity

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The hexane extract of Echinops spinosissimus Turra subsp. spinosus flower heads was analyzed for its fatty acid and sterol composition. Its physicochemical characteristics were also studied. The saponification, iodine and peroxide values were determined as 255 mg KOH/g, 42.57 g I /100 g and 110 m equiv. O /kg of oil, respectively. The oleic (C18:1; 61.14%), palmitic (C16:0; 21.36%) and linoleic (C18:2; 10.45%) acids were the dominant fatty acids. This extract was also found to contain high levels of β-sitosterol and stigmasterol (44.97% and 34.95% of total sterols, respectively). On the other hand, the identification of terpenoid compounds was investigated by using GC/MS, which revealed fourteen major terpenoids mainly taraxasterol, lupeol, pseudotaraxasterol, lup-22(29)-en-3-yl acetate, taraxasteryl acetate, α-amyrin, β-amyrin, pseudotaraxasteryl acetate, hop-20(29)-en3-β-ol, α-amirenone, along with β-sitosterol and stigmasterol. Moreover, we have evaluated the in vitro antibacterial and antifungal activities of the unsaponifiable matter and a fraction isolated from this extract. These activities were conducted using the diffusion disc methods and broth microdilution assay. The resulted fraction from this extract showed the highest antibacterial activity with significant minimum inhibitory concentrations (MIC) values 125.0 μg/ml against Staphylococcus aureus, Micrococcus luteus and Bacillus cereus. However, it did exhibit no substantial antifungal activity.

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“…The oil contains high % of linoleic as seen in table 3.4 below and it is one of the most important essential polyunsaturated fatty acid in human food because of the inability of the body to synthesize it. It's present in the body prevents distinct heart vascular diseases in the body (Boelhouwer, 1983). …”

Section: Resultsmentioning

confidence: 99%

Determination of the Proximate Composition, Physicochemical Analysis and Characterization of Fatty Acid on the Seed and Oil of Gossypium Hirsutum

Okonkwo¹,

Okafor²

2016

IJC

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The proximate composition, physicochemical analysis and characterization of gossypium hirsutum seed and its oil was carried out. The parameters that were studied in proximate analysis include (percentage) % moisture, % crude protein, % crude fiber, % ash content, % lipid. The total % carbohydrate content of the seed was 30.49+0.4 and the estimated % energy value was 435.58. The chemical parameters analyzed on the oil include iodine value, saponification value, free fatty acid (FFA) value and % volatile matter. In the characterization of fatty acid present in the oil with GC-MS Spectroscopy system, the major unsaturated fatty acid values were 14.53% for oleic acid and 55.38% for linoleic acid while the palmitic acid and stearic acid values which were saturated acid are 27.39% and 2.23% respectively. The percentage values of the rest of the fatty acid present in the oil were very low. The parameters determined were within the international and Nigerian industrial standard for vegetable oil.

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Trends in the chemistry and technology of lipids

Cited by 22 publications

References 36 publications

Chemical Composition and Fatty Acid Profile of the Lipid Fractions of Selected Nigerian Indigenous Oilseeds

Chemical Composition and Fatty Acid Profile of the Lipid Fractions of Selected Nigerian Indigenous Oilseeds

Hexane Extract of Echinops spinosissimus Turra subsp. spinosus from Tunisia: A Potential Source of Acetylated Sterols – Investigation of its Biological Activities

Determination of the Proximate Composition, Physicochemical Analysis and Characterization of Fatty Acid on the Seed and Oil of Gossypium Hirsutum

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