A lipidomic approach for profiling and distinguishing seed oils of Hibiscus manihot L., flaxseed, and oil sunflower

Author(s):  
Feiyun Yang ◽  
Bao Zhang ◽  
Baiting Chen ◽  
Nafei Yang ◽  
Ruigang Wang ◽  
...  
Keyword(s):  
2019 ◽  
Author(s):  
Chem Int

The physicochemical properties of six imported and one locally produced edible vegetable oils (soybean oil, sunflower oil, sunlit oil, hayat oil, avena oil, USA vegetable oil and Niger oil) purchased from Bahir Dar city, Ethiopia, were examined for their compositional quality. All the oil samples were characterized for specific gravity, moisture content, color, relative viscosity, refractive indices, ash content, peroxide value, saponification value, smoke point, acid value, free fatty acid value and trace metals contents using established methods. The result clearly indicates that some of the oil samples exhibited unacceptable value when compared with physicochemical parameters recommended by the Codex Alimentations Commission of FAO/WHO and the specification of Ethiopian standards. The contents of nickel (Ni), copper (Cu) and iron (Fe) in seven samples were determined using ICP-OES and their concentrations were found in the range of 1.8-20.4, 45.8-82.2 and 136.04-445.0 mg/kg, respectively.


Author(s):  
Ann Kiplagat Jepkorir ◽  
Charles Maina Irungu ◽  
Philip Bett Kendagor

All parts of A. indica (neem) and R. communis (castor) plants have mostly been used as natural remedies in the control and treatment of several ailments, control of pests and insects, animal feeds and production of industrial products globally. The seed oils of A. indica and R. communis are known to have antidiabetic, anti-helminthic, antifertility, antioxidant, antibacterial, anti-inflammatory, anti-cancer, insecticidal and mosquitocidal activity. This study reports for the first time the chemical composition of A. indica and R. communis seed oils from Marigat, Baringo County, Kenya. Seed oils of A. indica and R. communis were   extracted from mature dried seeds through cold pressing and boiling respectively and chemical composition determined using Gas Chromatography (GC)-Mass Spectrometry (MS).  The constituents of both seed oils were dominated by saturated and unsaturated fatty acids, cyclic esters and methyl esters. The predominant constituents of R. communis were (Z)-6-Octadecenoic acid (37.33%), Ricinoleic acid (30.22%) and 13-Hexyloxacyclotridec-10-en-2-one (26.67%) while those of A. indica were 2-hexyl-1-decanol (30.97%), Octadecanoic acid (29.69%) and Oxalic acid, 6-ethyloct-3-yl ethyl ester (15.55%). Oils contained Hexadecanoic acid and Octadecanoic acid which are used in the manufacture of several products such as candles, soaps, lotions, perfumes and cosmetics. Octadecenoic acid is important in control of human diseases and Ricinoleic acid in production of alkyd resins for surface coating and biofuel.  From the results, A. indica and R. communis seed oils constituents have potential in the agricultural, industrial, comestics and pharmaceutical sectors but require further fractionation to isolate the bioactive compounds.


2020 ◽  
Author(s):  
Mark Smith ◽  
Debbie Puttick ◽  
Carlene Sarvas
Keyword(s):  

2021 ◽  
Vol 111 ◽  
pp. 249-260
Author(s):  
Hossein Ahangari ◽  
Jerry W. King ◽  
Ali Ehsani ◽  
Mohammad Yousefi

1940 ◽  
Vol 61 (12) ◽  
pp. 1288-1291 ◽  
Author(s):  
Chuta HATA ◽  
Tatsuki KUNISAKI
Keyword(s):  

2002 ◽  
Vol 43 (6) ◽  
pp. 878-884
Author(s):  
Leon J. Schurgers ◽  
Martin J. Shearer ◽  
Berry A.M. Soute ◽  
Ibrahim Elmadfa ◽  
Julia Harvey ◽  
...  

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