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alpha linolenic acid/kartoffel
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15 Ergebnisse
Double hydroperoxidation of alpha-linolenic acid by potato tuber lipoxygenase.
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The potato tuber lipoxygenase preparations convert alpha-linolenic acid not only to 9(S)-HPOTE, but also to some more polar metabolites. Two of these polar products, I and II, with ultraviolet absorbance maxima at 267 nm were purified by HPLC. It was found that metabolites I and II have,
Antisense-mediated depletion of potato leaf omega3 fatty acid desaturase lowers linolenic acid content and reduces gene activation in response to wounding.
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Fatty acid omega3 desaturases act on membrane lipids to catalyse the formation of trienoic fatty acids, the most abundant in plant tissues being alpha-linolenic acid. This fatty acid is a precursor of jasmonic acid, a plant growth regulator involved in the control of wound-induced gene activation in
Differential formation of octadecadienoic acid and octadecatrienoic acid products in control and injured/infected potato tubers.
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Lipoxygenases in plants have been implicated in the activation of defense responses against injury/infection. Pathogen-derived polyunsaturated fatty acids, such as arachidonic acid, eicosapentaenoic acid and their metabolites have been shown to elicit defense responses against pathogen infection in
Characterization of metabolic pathway of linoleic acid 9-hydroperoxide in cytosolic fraction of potato tubers and identification of reaction products.
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Potato tubers are shown to contain a unique lipoxygenase pathway to form 9-hydroperoxy-10,12-octadecadienoic acid (9-HPODE) from linoleic acid. Here, we report the metabolic pathway of 9-HPODE in the cytosolic fraction and the characterization of enzymes involved in the conversion of metabolites.
Feeding of spinach or sweet-potato leaves and growth performance of growing pigs kept on smallholder farms in Central Vietnam.
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We investigated whether the addition of either spinach or sweet-potato leaves to the diet of growing pigs, kept in small holdings in Central Vietnam, would improve growth performance. A control diet was formulated and mixed with each of the vegetables to a final concentration of 15% of the total
Molecular cloning, functional expression, and tissue distribution of a potato sprout allene oxide synthase involved in a 9-lipoxygenase pathway.
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Potato (Solanum tuberosum) plants are rich in 9-lipoxygenase, which converts linoleic acid and alpha-linolenic acid to 9S-hydroperoxy-10E,12Z-octadecadienoic acid (9-HPOD) and 9S-hydroperoxy-10E,12Z,15Z-octadecatrienoic acid (9-HPOT) respectively. The allene oxide synthase (AOS) involved in
Expression of a Flax Allene Oxide Synthase cDNA Leads to Increased Endogenous Jasmonic Acid (JA) Levels in Transgenic Potato Plants but Not to a Corresponding Activation of JA-Responding Genes.
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Both jasmonic acid (JA) and its methyl ester, methyl jasmonate (MeJA), are thought to be significant components of the signaling pathway regulating the expression of plant defense genes in response to various stresses. JA and MeJA are plant lipid derivatives synthesized from [alpha]-linolenic acid
Comparison of fatty acid and polar lipid contents of tubers from two potato species, Solanum tuberosum and Solanum phureja.
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Total and individual fatty acid contents were determined in raw tubers of four genotypes from each of the two species Solanum phureja and S. tuberosum. The four S. phureja genotypes contained statistically significantly higher concentrations of total fatty acids, with their average value being 37%
Postprandial cytokine concentrations and meal composition in obese and lean women.
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The aim of this study was to compare the acute effect of (i) meals rich in saturated fat, oleic acid, and alpha-linolenic acid and (ii) meals rich in starch and fiber on markers of inflammation and oxidative stress in obese and lean women. In a crossover study, 15 abdominally obese women (age, 54
Ethane and ethylene formation by mitochondria as indication of aerobic lipid degradation in response to wounding of plant tissue.
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During aerobic incubation of potato slices or potato mitochondria at acidic pH, ethane and ethylene in a ratio of approx. 50 : 1 are generated from an endogenous substrate. Both ethane and ethylene production are stimulated by the addition of alpha-linolenic acid. Ethane formation from linolenic
[Formation of polyunsaturated fatty acids in plants].
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Higher plants synthesize large amounts of linoleic and alpha-linolenic acids by progressive desaturation of oleic acid. Plant desaturases are active only during a short period of the development of seeds or leaves. 14C-oleate desaturation has been followed experimentally in various plants (Rapeseed,
Effect of a daily snack containing green leafy vegetables on women's fatty acid status: a randomized controlled trial in Mumbai, India.
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OBJECTIVE
There are few data on the fatty acid status of non-pregnant Indian women. Our objective was to investigate the effect of a snack containing green leafy vegetables (GLVs) on women's erythrocyte long chain polyunsaturated fatty acid status (LCPUFA).
METHODS
Non-pregnant women (n=222) aged
Epoxyalcohol synthase activity of the CYP74B enzymes of higher plants
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The CYP74B subfamily of fatty acid hydroperoxide transforming cytochromes P450 includes the most common plant enzymes. All CYP74Bs studied yet except the CYP74B16 (flax divinyl ether synthase, LuDES) and the CYP74B33 (carrot allene oxide synthase, DcAOS) are 13-hydroperoxide lyases (HPLs, synonym:
Double function hydroperoxide lyases/epoxyalcohol synthases (CYP74C) of higher plants: identification and conversion into allene oxide synthases by site-directed mutagenesis.
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The CYP74C subfamily of fatty acid hydroperoxide transforming enzymes includes hydroperoxide lyases (HPLs) and allene oxide synthases (AOSs). This work reports a new facet of the putative CYP74C HPLs. Initially, we found that the recombinant CYP74C13_MT (Medicago truncatula) behaved predominantly as
Nutritional composition and antioxidant activity of four tomato (Lycopersicon esculentum L.) farmer' varieties in Northeastern Portugal homegardens.
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The nutritional and antioxidant composition of four tomato Portuguese farmer' varieties widely cultivated in homegardens was determined. The analysed components included macronutrients, individual profiles of sugars and fatty acids by chromatographic techniques, hydrophilic antioxidants such as
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