Lipids, Fatty Acids and Sterols of Cystoseira abies - marina (original) (raw)
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Acta Periodica Technologica
Algae are a significant part of biodiversity and studies on their bioactive compounds are numerous. The aim of this work was to study the fatty acid profile of Cystoseira sauvageauana and Laurencia pinnatifida collected from the Algerian coast. Different conventional and alternative methods were used for lipids extraction and GCMS analysis for fatty acids methyl esters identification. The lipids content was low (<1%) for the two species while the highest yield was obtained by Folch method assisted with a pulsed electric field. The identified fatty acids in both species ranged from C14 to C20 carbon atoms, of which palmitic acid was the major compound. Regarding polyunsaturated fatty acids, in C. sauvageauana arachidonic acid (C20:4) was the major constituent in extraction methods using the chloroform: methanol mixture as solvent, while in the method using hexane, linoleic acid (C18:2) was found as the main constituent. In L. pinnatifida, eicosapentaenoic acid (C20:5) was the majo...
Chemical composition of Cystoseira crinita Bory from the Eastern Mediterranean
… fur Naturforschung C- …, 2002
The chemical composition of the brown alga Cystoseira crinita Bory from the Eastern Mediterranean was investigated. Fourteen sterols have been identified, five of them for the first time in algae. The structure of one new sterol was established. The origin of seven sterols with short side chains was discussed. In the volatile fraction 19 compounds and in the polar fraction 15 compounds were identified. The main lipid classes were isolated and their fatty acid composition was established.
Background: This study investigates fatty acids and sterol contents of some seeds used in Asian nutrition culture to prepare functional beverages, foods or fatty acids and sterols source. Objective: Current study presents an overview about some seeds as a valuable source for fatty acids and sterols extraction. Methods: Gas chromatography-mass spectrometry was employed to quantify fatty acids and sterol contents and compare them to standard components. Different ash values, free amino acids, and soluble sugars were investigated. High-performance thin layer chromatography (HPTLC) was employed to detect the components. Inter-and intra-day variations, linearity of the calibration curves, and the CV of accuracy for fatty acids and sterols were generally within the acceptable ranges. Results: The total oil content of the seeds ranged from 0.04% to 7.39%, with blue skullcap seed yielding the highest percentage of oil. The stigmasterol and-sitosterol content of the oils ranged from 1.47 ± 0.03mg/100 g (canary grass seed oil) to 26.20 ± 0.40 mg/100 g (quince seed oil). The major monounsaturated fatty acid (MUFA)-oleic acid-was present in Quercus brantii oil, canary grass, and Crataegus aronia seeds. Linoleic acid was the most abundant polyunsaturated fatty acid (PUFA) in Entada rheedii (60.65 ±0.84%), canary grass (64.43±0.17%), and Cydonia oblonga seed oil (63.55 ±1.30%). Linolenic acid was the major fatty acid in the oil of blue skullcap (90.24 ±0.17%) and Lallemantia royleana seeds (85.18 ± 3.79%). Conclusion: Most of the detected seeds, especially S. lateriflora and L. royleana seeds were rich sources of phytosterols and essential fatty acids.
Ciencias Marinas
A screening of the total lipids and fatty acids (FAs) of 11 brown algae species of the genus Cystoseira (Phaeophyceae, Fucales) from the Tunisian coast is presented and discussed. Cystoseira species showed low total lipid content, ranging from 19.8 to 68.2 mg•g-1 dry weight. Fourteen major FAs were detected in the lipid extract of Cystoseira. The FA profile of lipid extracts was characterized by high amounts of saturated FAs (SFAs) ranging from 40.51% to 57.91% of total FAs, with predominance of the lipid fraction of palmitic acid (>30% of total FAs). The arachidonic acid (C20:4n-6) levels were found to be significantly high, ranging from 8% to 16% of total FAs. Multivariate analyses of FA composition showed low geographic differentiation, providing further evidence of intraspecific diversity. Cystoseira crinita, Cystoseira schiffneri, Cystoseira amentacea var. stricta, and Cystoseira sedoides stood out for their low polyunsaturated fatty acid (PUFA)/SFA ratios, low n-6/n-3 PUFA ratios, high unsaturation, and low atherogenicity and thrombogenicity indices, suggesting high nutritional value.
Chemical and fatty acid composition of Cyperus esculentus
Chemistry of Natural Compounds, 2010
This work was carried out to compare the potential applications of Ricinodendron heudelotii, Cyperus esculentus, Citrullus colocynthis and Irvingia gabonensis oil seeds by investigating their physicochemical parameters. Physicochemical parameters of the extracted oils were respectively as follow: Refractive index (1.49; 1.46; 1.45 and 1.44), acid value (1.35±0.02; 1.87 ± 0.45; 13.85 ± 0.02 and 39.04 ± 0.34 mg KOH/g), peroxide value (37.98 ± 0.01; 86.16 ± 0.32; 48.77 ± 0.22 and 2.34 ± 0.31 meq O 2 /kg), iodine value (142.12 ± 0.34; 75.46 ± 0.35; 120.45 ± 0.29 and 07.42 ± 0.3 g I 2 /100 g), saponification value (154.67 ± 0.28; 175.47 ± 0.30; 175.64 ± 0.28 and 176.03 ± 0.50 mg KOH/g), unsaponifiable matter (1.88 ± 0.04; 0.88 ± 0.03; 0.74 ± 0.03 and 1.26 ± 0.05%), vitamin A (0.00 ± 0.00; 2.78 ± 0.07; 3.66 ± 0.04 and 7.17 ± 0.32 µg/g), cholesterol (0.00 mg/g) for R. heudelotii, C. esculentus, C. colocynthis and I. gabonensis. P-anisidine value (301.17 ± 0.98; 24.47 ± 0.03; 29.04 ± 0.03 and 0.39 ± 0.00). R. heudelotii and C. colocynthis seeds showed relatively high content of linoleic acid (about 26.61 and 53.09% of total fatty acids). The nervonic acid content of the R. heudelotii seed is 45.24 ± 0.02 of total fatty acids. All these interesting characteristics should arouse attention for the usage of these oils seeds in food, pharmaceutical, cosmetic industries and biodiesel. These results suggest that they can be good for table, cooking and frying oils. The high linoleic acid level makes them good oils for the fight against cardiovascular illnesses. In addition, the high content of nervonic acid in R. heudelotii oil could be used in cases of diseases involving demyelination, such as adrenoleukodystrophy and multiple sclerosis where there is a considerable reduction in the levels of nervonic acid in the sphingolipids.
Fatty Acids and Sterol Content of Cydonia oblonga ( Quince ; Rosaceae )
Gas chromatography-mass spectrometry was employed to quantify fatty acids and sterol contents and compare them to standard components. Different ash values, free amino acids, and soluble sugars were investigated. High-performance thin layer chromatography (HPTLC) was employed to detect the components. Inter-and intra-day variations, linearity of the calibration curves, and the CV of accuracy for fatty acids and sterols were generally within the acceptable ranges. Results: The total oil content of the seeds ranged from 0.04% to 7.39%, with blue skullcap seed yielding the highest percentage of oil. The stigmasterol and-sitosterol content of the oils ranged from 1.47 ± 0.03mg/100 g (canary grass seed oil) to 26.20 ± 0.40 mg/100 g (quince seed oil). The major monounsaturated fatty acid (MUFA)-oleic acid-was present in Quercus brantii oil, canary grass, and Crataegus aronia seeds. Linoleic acid was the most abundant polyunsaturated fatty acid (PUFA) in Entada rheedii (60.65 ±0.84%), canary grass (64.43±0.17%), and Cydonia oblonga seed oil (63.55 ±1.30%). Linolenic acid was the major fatty acid in the oil of blue skullcap (90.24 ±0.17%) and Lallemantia royleana seeds (85.18 ± 3.79%). Conclusion: Most of the detected seeds, especially S. lateriflora and L. royleana seeds were rich sources of phytosterols and essential fatty acids.
Scientia Marina, 2000
Fatty acids and sterols of gametophytes and sporophytes of Chondrus crispus were isolated and identified. Although chemical variation in the proportions of other natural compounds (eg. different carrageenan type) between gametophytes and sporophytes has already been observed, this is the first comparative study of the lipid composition in both generations. The content of fatty acids and sterols in gametophytes (0.710 and 0.190 mg g-1 dry weight respectively) was higher than in sporophytes (0.622 and 0.113 mg g-1 dry weight). The main fatty acids were palmitic, palmitoleic, oleic, arachidonic and eicosapentaenoic acids. These five fatty acids represented more than 78% of the all fatty acid composition in both generations. In addition unsaturated fatty acids were present in a much greater quantity (>80%) than saturated fatty acids. However, differences in the distribution of fatty acids between the two generations were observed. Gametophytes demonstrated higher amounts of monounsaturated fatty acids while sporophytes had a relatively higher content of saturated and polyunsaturated fatty acids. The major sterol in both generations was cholesterol (>94%). Differences were also observed in the sterol distribution between gametophytes and sporophytes, the former containing smaller amounts of 7-dehydrocholesterol and stigmasterol, while the latter had smaller amounts of 22-dehydrocholesterol, campesterol and sitosterol. Gametophytes were lacking 24-methylenecholesterol. Fatty acids and sterol of algal class, families and sometimes even species are characteristic to those particular taxa, and could be useful as chemotaxonomic markers. The results of this study showed that intra-specific variation in algae can be occured.
Botanica Marina, 2016
Macroalgae are valuable resources for human consumption in many countries. This work reports for the first time a comparative evaluation of the nutritional properties of five edible macroalgae from the genus Cystoseira, namely C. humilis, C. tamariscifolia, C. nodicaulis, C. compressa and C. baccata. For this purpose, their proximate composition was determined in terms of moisture, ash, and total contents of protein, lipids, carbohydrates and mineral profile. Cystoseira tamariscifolia and C. baccata were the species that in general had the higher ash, protein and lipid contents, while the highest levels of moisture and total carbohydrates were detected in C. nodicaulis and C. compressa. Cystoseira species had also high amounts of minerals, especially of potassium, calcium and iron, and a favorable Na/K ratio. The present study shows that Cystoseira has a balanced nutritional composition, suitable for human consumption, and that its intake can contribute to a healthy and well-balanced diet.
Fatty Acids, Sterols and ?-Tocopherol in Isochrysis Galbana
Journal of Food Lipids, 2003
Isochrysis galbana under 24 h and 8 h lighting was studied. The most abundant fatty acids were 14:0, 16:0, 16:1, 18:403, 20:503 and 22:6w3. Higher accumulation of monounsaturated fatty acids was observed in the decay phase whereas in the lag phase polyunsaturated fatty acids (PUFA) were the major group. The shorter light period seemed to increase the production of PUFA. Sitosterol and stigmasterol were the two main sterols detected achieving the levels 246.3 and 220.0 mg/lOO g, respectively. A continuous increase in the level of total sterols was recorded during the life cycle at 24 h lighting. The reduction of the photoperiod led to a decrease in the total sterols produced in the decay phase. An increase in a-tocopherol production during the life cycle was recorded. The reduction of the lighting period considerably decreased the biosynthesis of this antioxidant.