‘Zeitoun Ennour’: A new olive (Olea europaea L.) cultivar in Tunisia with high oil quality

An olive breeding program was started in Tunisia in 1993 in order mainly to improve the fatty acid composition of the local cultivar ‘Chemlali Sfax’. ‘Zeitoun Ennour’ is a new cultivar obtained from a cross between ‘Chemlali Sfax’ and the local dual-purpose use cultivar ‘Chemchali Gafsa’. The morphological study of this cultivar showed that eleven characters dealing with fruit and endocarp differed from ‘Chemlali Sfax’, mainly regarding to their respective weights. This new cultivar had the same sensitivity to Verticillium dahliae Kleb and earlier bearing than the original variety. Its olive production was considered as high as for ‘Chemlali Sfax’ but with partial self-compatibility and late maturity. The new cultivar realized a net improvement in comparison with the original cultivar particularly regarding its fatty acid composition with very high oleic acid content (>75 %) and low palmitic and linoleic acid contents (<10 %). The new cultivar was recently released and will be available for growers as soon as possible.

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Modification of fatty acid composition in soybean seeds to improve soybean oil quality and functionality

10.32469/10355/14220 ◽

2011 ◽

Author(s):

◽

Anh Tung Pham

Keyword(s):

Fatty Acid Composition ◽

Oleic Acid ◽

Fatty Acid ◽

Acid Content ◽

Oil Quality ◽

Soybean Seeds ◽

Oleic Acid Content ◽

High Oleic Acid ◽

Plant Introductions ◽

High Oleic

The purpose of this project is to modify the fatty acid composition in soybean seeds to improve soybean oil quality and functionality. By sequencing the FAD2-1A and FAD2-1B genes in 24 plant introductions, we identified two novel mutant alleles: one for each gene that is responsible for the elevated oleic acid content in four plant introductions. The combination of the newly identified mutant FAD2-1B allele with existing or the novel mutant FAD2-1A alleles created soybean lines with more than 80% oleic acid content. Combination of two mutant FAD2-1A and FAD2-1B with mutant FAD3A or mutant FAD3C or both resulted in high oleic acid content of 80 - 85% and linolenic acid content in the range from 1.5 - 4%. Perfect molecular markers associated with these mutant alleles were designed to help select the soybean lines with genotypes of interest in early generations in breeding. The high oleic acid and high oleic acid low linolenic soybeans produced have an improved stability across growing environments compared to existing sources.

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Effect of growth temperature on the high stearic and high stearic-high oleic sunflower traits

Crop and Pasture Science ◽

10.1071/cp12437 ◽

2013 ◽

Vol 64 (1) ◽

pp. 18 ◽

Cited By ~ 11

Author(s):

N. G. Izquierdo ◽

L. A. N. Aguirrezábal ◽

E. Martínez-Force ◽

R. Garcés ◽

V. Paccapelo ◽

...

Keyword(s):

Fatty Acid Composition ◽

Oleic Acid ◽

Fatty Acid ◽

Acid Composition ◽

Oil Quality ◽

Grain Filling ◽

Effect Of Temperature ◽

Gas Liquid Chromatography ◽

High Oleic ◽

Response To Temperature

We investigated variability in the response of oil fatty acid composition to temperature among high stearic and high stearic-high oleic sunflower (Helianthus annuus L.) genotypes. Two experiments were conducted with high stearic (including the CAS-3 mutation) and high stearic-high oleic inbred lines (including both the CAS-3 and the high oleic Soldatov mutations). Plants were cultivated in pots with soil, irrigated, and fertilised. Plants were exposed to different day/night temperatures during grain filling: 16/16°C, 26/16°C, 26/26°C, and 32/26°C. Oil fatty acid composition was determined by gas–liquid chromatography in seeds harvested after physiological maturity. Higher temperature during grain filling increased palmitic and oleic acid percentages and reduced stearic and linoleic acid percentages, suggesting some modifications on enzymatic activities. When the high oleic mutation was included, the variation in stearic and oleic acid percentages in response to temperature was reduced but not the variation in palmitic acid concentration. Variations in fatty acid composition in high stearic genotypes were mainly associated with night temperature as reported previously for traditional and high oleic hybrids. Knowing the effect of temperature on oil fatty acid composition in traditional and mutated genotypes is useful for selecting the environment in which to produce grains with the desired oil quality.

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Cold-pressed cactus pear seed oil: Quality and stability

Grasas y Aceites ◽

10.3989/gya.0329201 ◽

2021 ◽

Vol 72 (3) ◽

pp. e415 ◽

Cited By ~ 3

Author(s):

M. De Wit ◽

V.K. Motsamai ◽

A. Hugo

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Fatty Acid ◽

Physicochemical Properties ◽

Acid Composition ◽

Oil Content ◽

Seed Oil ◽

Oil Quality ◽

Cactus Pear ◽

Cold Pressed

Cold-pressed seed oil from twelve commercially produced cactus pear cultivars was assessed for oil yield, fatty acid composition, physicochemical properties, quality and stability. Large differences in oil content, fatty acid composition and physicochemical properties (IV, PV, RI, tocopherols, ORAC, % FFA, OSI and induction time) were observed. Oil content ranged between 2.51% and 5.96% (Meyers and American Giant). The important fatty acids detected were C16:0, C18:0, C18:1c9 and C18:2c9,12, with C18:2c9,12, the dominating fatty acid, ranging from 58.56-65.73%, followed by C18:1c9, ranging between 13.18-16.07%, C16:0, which ranged between 10.97 - 15.07% and C18:0, which ranged between 2.62-3.18%. Other fatty acids such as C14:0, C16:1c9, C17:0, C17:1c10, C20:0, C18:3c9,12,15 and C20:3c8,11,14 were detected in small amounts. The quality parameters of the oils were strongly influenced by oil content, fatty acid composition and physicochemical properties. Oil content, PV, % FFA, RI, IV, tocopherols, ORAC and ρ-anisidine value were negatively correlated with OSI. C18:0; C18:1c9; C18:2c9,12; MUFA; PUFA; n-6 and PUFA/SFA were also negatively correlated with OSI. Among all the cultivars, American Giant was identified as the paramount cultivar with good quality traits (oil content and oxidative stability).

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Variability of Seed Fatty Acid Composition to Growing Degree-Days in High Oleic Acid Sunflower Genotypes

Helia ◽

10.1515/helia-2014-0022 ◽

2015 ◽

Vol 38 (62) ◽

Cited By ~ 8

Author(s):

Claudio Ferfuia ◽

Maurizio Turi ◽

Gian Paolo Vannozzi

Keyword(s):

Fatty Acid Composition ◽

Oleic Acid ◽

Fatty Acid ◽

Acid Composition ◽

Inbred Line ◽

Acid Content ◽

Growing Degree Days ◽

Environment Interaction ◽

Oleic Acid Content ◽

Degree Days

AbstractHigh temperature enhances the oleic acid content in the oil of normal cultivars but conflicting results are reported on temperature effects on oleic acid content in HO cultivars: either no effect or an increase in oleic acid content with temperature. To investigate the effects of temperature on HO genotypes under natural field conditions, a three-year field trial was conducted using two sowing dates and three HO genotypes (two inbred lines and one hybrid). To compare our results with previous works, growing degree-days (GDD) were computed (base temperature=6°C). GDD accumulated during the “flowering – 25 days after flowering” period influenced fatty acid composition of seed. Oleic and linoleic acid contents were affected by accumulated GDD in two HO genotypes (one inbred line and the hybrid). There was an increase of about 3% in oleic acid content as response to more high GDD accumulated. Their content was not modified by GDD in the other inbred line. There was a genotype×environment interaction that we suppose depending on modifier genes. These genetic factors affected oleic acid content. This indicated the importance of breeding targeted to select hybrids with a stable oleic acid content and higher than 90%. Saturated fatty acids (palmitic and stearic) were also influenced by temperature, and there was genetic variability among genotypes.

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Comparison of fatty acid composition of oil from original and regenerated populations of wild Helianthus species

Plant Genetic Resources ◽

10.1017/s1479262114000677 ◽

2014 ◽

Vol 13 (1) ◽

pp. 83-89 ◽

Cited By ~ 2

Author(s):

Gerald J. Seiler

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Fatty Acid ◽

Acid Composition ◽

Wild Species ◽

Oil Quality ◽

Wild Sunflower ◽

Breeding Programmes ◽

Precise Relationship ◽

Germplasm Accessions

Monitoring and protecting germplasm in genebanks using in situ collections while preserving its original genetic integrity is a priority of germplasm curation. Many germplasm accessions need to be regenerated due to their demand and/or seed condition. The regeneration of wild Helianthus (sunflower) species poses several challenges due to the diversity of 53 wild species. Fatty acid composition of sunflower oil is an important quality factor for the crop. Since oil quality is environmentally influenced, and evaluation of this trait is usually performed on oil from achenes from the original accessions of wild sunflower species, we conducted a study on 72 accessions of eight annual and four perennial taxa of wild sunflower species to compare the oil quality of the original accessions and those regenerated for genebank maintenance. The results showed that the fatty acid composition profiles of achenes from the original and regenerated accessions are not the same. It seems that selection for specific fatty acids in several species will require the analysis of both populations to identify germplasm accessions for use in breeding programmes. It should be borne in mind that accessions of wild species are open-pollinated segregating populations, so one would expect some variability in each succeeding generation. While there may be differences between the original and regenerated accessions, the interrelationships of fatty acids are generally similar in wild and cultivated sunflower species, so there should be no detrimental effects on oil quality when using the wild species for other traits. As more regenerated accessions become available, a more precise relationship between the original and regenerated accessions should emerge.

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Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of Brassica napus L. Plants

Agronomy ◽

10.3390/agronomy10081186 ◽

2020 ◽

Vol 10 (8) ◽

pp. 1186 ◽

Cited By ~ 4

Author(s):

Ibrahim A. A. Mohamed ◽

Nesma Shalby ◽

Ali M. A. El-Badri ◽

Muhammad Hamzah Saleem ◽

Mohammad Nauman Khan ◽

...

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Fatty Acid ◽

Oxidative Damage ◽

Acid Composition ◽

Salinity Stress ◽

Unsaturated Fatty Acids ◽

Oil Quality ◽

Growth And Yield

Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K+/Na+ homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acids composition. Days required for appearance of first flower and 50% flowering were decreased by MT application. Exogenous MT treatment effectively decreased the oxidative damage by significantly declining the generation of superoxide and hydrogen peroxide under saline and non-saline conditions, as reflected in lowered lipid peroxidation, heightened membrane stability, and up-regulation of antioxidant enzymes (catalase, superoxide dismutase, and ascorbate peroxidase). Furthermore, MT application enhanced the chlorophyll content, photosynthetic rate, relative water content, K+/Na+ homeostasis, soluble sugars, and proline content. Moreover, MT application obviously improved the oil quality of rapeseed cultivars by reducing glucosinolates, saturated fatty acids (palmitic and arachidic acids), and enhancing unsaturated fatty acids (linolenic and oleic acids except erucic acid were reduced). Yield related-traits such as silique traits, seed yield per plant, 1000 seeds weight, seed oil content, and yield biomass traits were enhanced by MT application. The anatomical analysis of leaf and stem showed that stomatal and xylem vessels traits are associated with sodium chloride tolerance, yield, and seed fatty acid composition. These results suggest the supportive role of MT on the quality and quantity of rapeseed oil yield.

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An evaluation of bioactive compounds, fatty acid composition and oil quality of chia (Salvia hispanica L.) seed roasted at different temperatures

Food Chemistry ◽

10.1016/j.foodchem.2020.127531 ◽

2020 ◽

Vol 333 ◽

pp. 127531 ◽

Cited By ~ 1

Author(s):

Kashif Ghafoor ◽

Isam A. Mohamed Ahmed ◽

Mehmet Musa Özcan ◽

Fahad Y. Al-Juhaimi ◽

Elfadıl E. Babiker ◽

...

Keyword(s):

Fatty Acid Composition ◽

Fatty Acid ◽

Acid Composition ◽

Bioactive Compounds ◽

Oil Quality ◽

Salvia Hispanica ◽

Different Temperatures ◽

Salvia Hispanica L

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cholesterol content and fatty acid composition of most consumed turkish hard and soft cheeses

Czech Journal of Food Sciences ◽

10.17221/3387-cjfs ◽

2011 ◽

Vol 23 (No. 4) ◽

pp. 166-172 ◽

Cited By ~ 12

Author(s):

O. Kinik ◽

O. Gursoy ◽

A.K. Seckin

Keyword(s):

Fatty Acids ◽

Fatty Acid Composition ◽

Fatty Acid ◽

Acid Composition ◽

Unsaturated Fatty Acids ◽

Saturated Fatty Acids ◽

Cholesterol Content ◽

Oleic Acid Content ◽

Soft Cheese ◽

The Mean

Cholesterol content and fatty acid composition of 29 different most popular hard (Tulum, Teneke Tulum, aged Kashar, and fresh Kashar cheeses) and soft cheese (White Pickled cheeses) samples from the markets ofIzmirinTurkeywere determined by gas chromatography. Cholesterol content of hard and soft cheeses ranged from 46.47 to 138.99 mg/100 g fat. Relative to the mean cholesterol values, the highest cholesterol content was found in fresh Kashar cheese. The fatty acid composition is quite similar in all samples. As concerns the saturated fatty acids, the most abundant in the cheeses investigated were palmitic (C16:0), stearic (C18:0), and myristic acids (C14:0). Palmitic acid levels were found to be the highest of the saturated fatty acid in all samples. Oleic acid content (5.93–29.38 mg/100 g fatty acids) in all cheeses was considerable higher than those of other unsaturated fatty acids. No specific trend or correlation between cholesterol and individual fatty acids was observed.  

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