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Lieb VM, Kerfers MR, Kronmüller A, Esquivel P, Alvarado A, Jiménez VM, Schmarr HG, Carle R, Schweiggert RM, Steingass CB. Characterization of Mesocarp and Kernel Lipids from Elaeis guineensis Jacq., Elaeis oleifera [Kunth] Cortés, and Their Interspecific Hybrids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3617-3626. [PMID: 28434221 DOI: 10.1021/acs.jafc.7b00604] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Morphological traits, total lipid contents, and fatty acid profiles were assessed in fruits of several accessions of Elaeis oleifera [Kunth] Cortés, Elaeis guineensis Jacq., and their interspecific hybrids. The latter featured the highest mesocarp-to-fruit ratios (77.9-78.2%). The total lipid contents of both E. guineensis mesocarp and kernel were significantly higher than for E. oleifera accessions. Main fatty acids comprised C16:0, C18:1n9, and C18:2n6 in mesocarp and C12:0, C14:0, and C18:1n9 in kernels. E. oleifera samples were characterized by higher proportions of unsaturated long-chain fatty acids. Saturated medium-chain fatty acids supported the clustering of E. guineensis kernels in multivariate statistics. Hybrid mesocarp lipids had an intermediate fatty acid composition, whereas their kernel lipids resembled those of E. oleifera genotypes. Principal component analysis based on lipid contents and proportions of individual fatty acids permitted clear-cut distinction of E. oleifera, E. guineensis, and their hybrids.
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Affiliation(s)
- Veronika M Lieb
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
| | - Margarete R Kerfers
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
| | - Amrei Kronmüller
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
| | - Patricia Esquivel
- School of Food Technology, Universidad de Costa Rica , 2060 San Pedro, Costa Rica
| | | | - Víctor M Jiménez
- CIGRAS, Universidad de Costa Rica , 2060 San Pedro, Costa Rica
- Food Security Center, University of Hohenheim , 70599 Stuttgart, Germany
| | - Hans-Georg Schmarr
- Dienstleistungszentrum Ländlicher Raum (DLR) Rheinpfalz, Institute for Viticulture and Oenology , Breitenweg 71, 67435 Neustadt an der Weinstraße, Germany
- Faculty of Chemistry, University Duisburg-Essen , Universitätsstraße 5, 45141 Essen, Germany
| | - Reinhold Carle
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
- Biological Science Department, King Abdulaziz University , P.O. Box 80257, Jeddah 21589, Saudi Arabia
| | - Ralf M Schweiggert
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
| | - Christof B Steingass
- Institute of Food Science and Biotechnology, Chair Plant Foodstuff Technology and Analysis, University of Hohenheim , Garbenstraße 25, 70599 Stuttgart, Germany
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Murphy DJ, Mukherjee KD. Biosynthesis of very long chain monounsaturated fatty acids by subcellular fractions of developing seeds. FEBS Lett 2001. [DOI: 10.1016/0014-5793(88)80650-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fehling E, Lessire R, Cassagne C, Mukherjee KD. Solubilization and partial purification of constituents of acyl-CoA elongase from Lunaria annua. BIOCHIMICA ET BIOPHYSICA ACTA 1992; 1126:88-94. [PMID: 1606179 DOI: 10.1016/0005-2760(92)90221-g] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
All the constituent enzymes of acyl-CoA elongase, i.e., beta-ketoacyl-CoA synthase, beta-ketoacyl-CoA reductase, beta-hydroxyacyl-CoA dehydrase and trans-2-enoyl-CoA reductase, have been solubilized from a 15,000 x g particulate fraction from developing seeds of honesty (Lunaria annua) using Triton X-100. All these activities were retained upon subsequent precipitation of the solubilized protein with polyethylene glycol and resuspension of the precipitate followed by ion exchange chromatography of the resulting protein on DEAE-cellulose. A 4.2-fold enrichment of the acyl-CoA elongase was thus obtained. Further chromatography of the DEAE fraction containing all the constituents of acyl-CoA elongase on Ultrogel yielded a major protein fraction exhibiting the activities of beta-ketoacyl-CoA synthase and beta-ketoacyl-CoA reductase only. Almost 30-fold purification of the beta-ketoacyl-CoA synthase was thus achieved. The beta-ketoacyl-CoA synthase was inhibited only at high concentrations of cerulenin, but at very low concentrations of iodoacetamide. Inhibition could be reduced by preincubation with thioesters, indicating that an enzyme thioester intermediate is involved in the condensation reaction of the acyl-CoA elongation.
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Affiliation(s)
- E Fehling
- Federal Centre for Cereal, Potato and Lipid Research, H.P. Kaufmann-Institute, Münster, Germany
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Fehling E, Mukherjee KD. Acyl-CoA elongase from a higher plant (Lunaria annua): metabolic intermediates of very-long-chain acyl-CoA products and substrate specificity. BIOCHIMICA ET BIOPHYSICA ACTA 1991; 1082:239-46. [PMID: 2029543 DOI: 10.1016/0005-2760(91)90198-q] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A particulate fraction (15,000 x g pellet) from developing seeds of honesty (Lunaria annua) was found to synthesize very-long-chain acyl-CoA thioesters in a manner similar to mammalian systems, i.e., via condensation of an acyl-CoA with malonyl-CoA yielding beta-ketoacyl-CoA, which is reduced to beta-hydroxyacyl-CoA, the latter dehydrated to trans-2-enoyl-CoA that is finally reduced to very-long-chain acyl-CoA. Reduced pyridine nucleotides (NADH/NADPH) are required for the reduction steps. In the absence of reduced pyridine nucleotides only the condensation reaction occurs. The acyl-CoA elongase does not exhibit any pronounced specificity for any of the saturated (14:0 to 20:0) or (n - 9)cis-monounsaturated (14:1 to 22:1) acyl-CoA substrates, although both the saturated and monounsaturated acyl-CoA substrates having chain lengths of C18 and C20 are elongated somewhat faster.
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Affiliation(s)
- E Fehling
- Federal Center for Lipid Research, H.P. Kaufmann-Institut, Müster, Germany
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Characterization of the fatty acyl elongation reactions involved in hydrocarbon biosynthesis in the housefly, Musca domestica L. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0020-1790(88)90022-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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