Variation in lipid composition of niger seed (<i>Guizotia abyssinica</i> Cass.) Samples collected from different regions in ethiopia

Dutta, Paresch Chandra; Helmersson, Seved; Kebedu, Eshetu; Alemaw, Getinet; Appelqvist, Lars‐Åke

doi:10.1007/bf02540459

Cited by 66 publications

(68 citation statements)

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“…Also the percentage of the other TAG molecular species seems to be in good agreement with the fatty acid distribution in the corresponding samples: besides LLL, PLL, POL and OLL appear as the other relevant triglycerides. Apart from a slight but significant variation in the OLL and OOO content, the triglyceridic distribution is quite the same for all the oils, irrespective of the geographical origin.The sterol distribution of the Ethiopian oils resembles those of the samples analyzed by Dutta et al [5], while that of the Indian samples has not been already published in the literature. As long as the Indian samples are concerned, we show that the campesterol content (and to a lesser extent the percentages of β-sitosterol and ∆ 5 -avenasterol) is significantly different, passing from a region to another.…”

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confidence: 71%

“…Elution was conducted using isooctane/1,4-dioxane 97:3 (v/v) as the mobile phase at a flow rate of 2 ml/min; the column was thermostated at 30 °C. ChromQuest software was used for calculating peak areas and standard tocopherol samples (Merck) have been eluted to identify the individual peaks: the total tocopherol content was quantitated as the sum of all the individual peaks identified [5]. …”

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Characterization of the lipid fraction of Niger seeds (Guizotia abyssinica cass.) from different regions of Ethiopia and India and chemometric authentication of their geographical origin

Marini¹,

Magrı̀²,

Marini³

et al. 2003

Euro J Lipid Sci & Tech

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The oil extracted from the seeds of niger (Guizotia Abyssinica), collected from 6 different regions of Ethiopia and India, was characterized in terms of its fatty acid, sterol and triglyceride distribution and of its total tocopherol content. Where available, the results have been compared with those reported in the literature or with data on oils from the same botanical family (Compositae). The analytical data have then been elaborated by supervised pattern recognition techniques (Linear Discriminant Analysis (LDA) and Artifical Neural Network (ANN)) in order to authenticate the geographical origin of the samples. Eight and 11 variables were necessary to achieve a complete discrimination respectively of the country and of the region of origin of the oils under exam, when using LDA, whereas ANN required a smaller number of experimental variables (4 and 6), due to its non-linearity

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confidence: 71%

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confidence: 99%

Characterization of the lipid fraction of Niger seeds (Guizotia abyssinica cass.) from different regions of Ethiopia and India and chemometric authentication of their geographical origin

Marini¹,

Magrı̀²,

Marini³

et al. 2003

Euro J Lipid Sci & Tech

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“…Furthermore, the cultivar NC-7 showed lower saponification level means. Tocopherols are also of interest because of their antioxidant activity (Dutta et al 1994). Tocopherol levels for var.…”

Section: Physical and Chemical Properties Of Peanut And Peanut Buttermentioning

confidence: 99%

PhysÄ±cal and chemÄ±cal analysÄ±s and fatty acÄ±d composÄ±tÄ±on of peanut, peanut oÄ±l and peanut butter from ÇOM and NC-7 cultÄ±vars

Özcan¹,

Seven²

2003

Grasas y Aceites

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RESUMENAnálisis físico-químico y composición en ácidos grasos de cacahuete, aceite de cacahuete y manteca de cacahuete de plantaciones ÇOM y NC-7.En las muestras de dos diferentes tipos de cacahuete y manteca de cacahuete, obtenidas de localidades diferentes de la misma región, se han determinado: humedad, proteína, grasa, celulosa, ceniza y energia. Por otro lado, se ha medido el peso de 1000 semillas y sus tamaños. En las muestras se han estudiado mediante un Espectrofotómetro de Emisión Atómica -Plasma con Acoplamiento Inductivo (ICP-AES) el contenido en Na, K, Ca, P, Fe, Zn, Cu, Mg, Mn, Al, As, B, Cs,Cr, Li, Pb, Se y V. En los granos y en la manteca de cacahuete se ha determinado la acidez, el ín-dice de iodo, el índice de peróxido, la densidad relativa, el índice de refracción, los tocoferoles, el índice de saponificación y la materia insaponificable. Por cromatografía de gases se ha determinado en las semillas y en los aceites de manteca de ambas plantaciones los ácidos: mirístico, palmítico, palmitoléico, esteári-co, oleico, linoleico, linolénico, araquídico, gadoléico y behénico. Los ácidos grasos mayoritarios de las mantecas y semillas de cacahuetes en las dos variedades fueron los ácidos oleico, linoleico y palmítico. Ambas variedades mostraron altas concentraciones de ácido oleico. Por consiguiente, las mantecas y semillas de cacahuetes de ÇOM y NC-7 aparecen ricas en aceite, proteína, áci-dos oleico y linoleico y minerales. El aumento de la relación alto oleico/linoleico y del contenido en tocoferoles es muy importante debido a la estabilidad del aceite. También, la manteca de cacahuete es equivalente nutricionalmente al grano de cacahuete. PALABRAS-CLAVE: Aceite -Ácidos grasos -Cacahuete (Arachis hypogaea L.) -Manteca de cacahuete -Propiedades físicas -Propiedades químicas -Minerales. SUMMARY Physical and chemical analysis and fatty acid composition of peanut, peanut oil and peanut butter from ÇOM and NC-7 cultivars.In the samples of two different peanuts and peanut butters which were obtained from different locations of the same region, moisture, protein, oil, cellulose, ash and energy have been determined. Furthermore, the weight of 1000 seeds peanuts and their sizes have been measured. In the samples, Na, K, Ca, P, Fe, Zn, Cu, Mg, Mn, Al, As, B, Cs,Cr, Li, Pb, Se and V amounts have been established by using Inductivelly Coupled Plasma-Atomic Emission Spectrophotometer (ICP-AES). In the kernels and peanut butter, acidity, iodine and peroxide value, relative density, re fractive i nd ex, to co ph ero l, sap on ificat ion number an d unsaponifiable matter have been determined. In the seed and butter oils of ÇOM and NC-7 cultivars, respectively; myristic, palmitic, palmitoleic, stearic, oleic, linoleic, linolenic, arachidic, gadoleic and behenic acids were identified mainly by gas chromatography. The major fatty acids of peanut seeds and butter of both cultivar were oleic, linoleic and palmitic acids. Both variety exhibited higher concentrations of oleic acid.Consequently, peanut seeds and butters of...

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“…The fatty acid composition of niger seed has been the subject of comparative investigations. DUTTA et al (1994) mentioned that, in the samples collected from different regions in Ethiopia, more than 70% of the fatty acids was linoleic acid (C18:2n-6). The other predominant fatty acids were palmitic (C16:0), stearic (C18:0), and oleic (C18:1n-9) acids in a range of 6 to 11% each.…”

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“…The concentration of ST in edible oils has been reported to be little affected by the environmental factors and/or by cultivation of new breeding lines (HIR-SINGER 1989;HOMBERG 1991). Furthermore, phytosterols are of interest due to their antioxidant activity and health benefits (DUTTA et al 1994;RICHARDSON 1996). Recently, phytosterols have been added to vegetable oils to provide an example of a successful functional food (NTANIOS 2001).…”

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Proximate neutral lipid composition of niger (Guizotia abyssinica Cass.) seed

Ramadan¹,

Mörsel²

2002

Czech J. Food Sci.

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Niger (Guizotia abyssinica Cass.) seed was extracted with hexane (H) and chloroform/methanol (CM) (2:1, v/v) to determine the effect of the solvent on the amount and composition of the recovered lipid. The amount of the total lipid (TL) extracted with H was 29.6% of the seed weight, while that extracted with CM was 49.9%. Column and thin-layer chromatographic procedures on Silica Gel were performed to fractionate the main neutral lipid (NL) subclasses. Fatty acid composition of the NL subclasses, triacylglycerol (TAG) molecular species, and sterol (ST) content were estimated. The NL amount was found to be higher (97% of TL) in the H extract than in the CM extract (93% of TL). TAG appeared to be the predominant NL subclass (89.7-91.9% of total NL). Linoleic acid (C18:2n-6) was the main fatty acid followed by oleic acid (C18:1n-9) as the second main unsaturated fatty acid, while palmitic acid (C16:0) was the major saturated fatty acid. With high temperature gas-liquid chromatography using a flame ionization detector (HTGLC/FID) and H 2 as the carrier gas, the actual TAG molecular species according to their carbon numbers were separated. TAG of even carbon numbers 16 and 18 were contained in six TAG molecular species. The major peaks occured at C54:6, and C54:3 corresponding to trilinolein and triolein. Furthermore, TAG molecular specie, expected to contain two molecules of linoleic acid (C54:5), was detected in a high level. Phytosterol pattern was determined without derivatization in the unsaponifiable fractions by HTGLC/FID. ST profile was characterized by a high total amount accounting for 4.22 g/kg of total H extract, and 4.00 g/kg of total CM extract. β-Sitosterol (2.035-1.929 g/kg TL) was the main component in both extracts. The major ST found were, in order of decreasing prevalence, β-sitosterol > campesterol > stigmasterol > ∆5-avenasterol > ∆7-avenasterol > lanosterol.

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Variation in lipid composition of niger seed (Guizotia abyssinica Cass.) Samples collected from different regions in ethiopia

Cited by 66 publications

References 4 publications

Characterization of the lipid fraction of Niger seeds (Guizotia abyssinica cass.) from different regions of Ethiopia and India and chemometric authentication of their geographical origin

Characterization of the lipid fraction of Niger seeds (Guizotia abyssinica cass.) from different regions of Ethiopia and India and chemometric authentication of their geographical origin

PhysÄ±cal and chemÄ±cal analysÄ±s and fatty acÄ±d composÄ±tÄ±on of peanut, peanut oÄ±l and peanut butter from ÇOM and NC-7 cultÄ±vars

Proximate neutral lipid composition of niger (Guizotia abyssinica Cass.) seed

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