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Brahim Marzouk - One of the best experts on this subject based on the ideXlab platform.
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Lipid and volatile composition of Borage (Borago officinalis L.) leaf
2017Co-Authors: Wissem Aidi Wannes, Baya Mhamdi, Moufida Saidani Tounsi, Brahim MarzoukAbstract:Lipid and volatile composition of Borago officinalis L. leaf was investigated. The results showed that α-linolenic acid was the major fatty acid followed by stearidonic acid. Total lipids were composed of neutral and polar lipids. Polar lipids were mainly composed of phosphatidylcholine as the major phospholipid, whereas monogalactosyldiacylglycerol was the major galactolipid. Quant to neutral lipids, they were mainly composed of triacylglycerols. The volatile composition exhibited the presence of many green note compounds such as hexanal, (E)-2-hexenal, hexanol, (Z)-3-hexenol, (E)-2-hexenol and nonanol. Borage leaf appears to be an important source of essential fatty acids, phospholipids, glycolipids and green note volatile compounds for food, cosmetic, pharmaceutical and biomedical applications.
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variation in anthocyanin and essential oil composition and their antioxidant potentialities during flower development of borage Borago officinalis l
Plant Biosystems, 2014Co-Authors: Nidhal Salem, M. Hammami, Kamel Msaada, Ferid Limam, G. Vasapollo, Brahim MarzoukAbstract:The aim of this study was to examine the chemical composition and antioxidant activities of the essential oils and anthocyanin of Borago officinalis flowers. At the flowering stage, the essential oil yield in Korba (0.95 ± 0.03%) was higher than that in Beja (0.29 ± 0.03%, w/w). The essential oil composition was characterized by high proportions of (E,E)-decadienal, the main compound of monoterpene aldehydes class. The reverse phase–high-performance liquid chromatography–mass spectrometry analysis indicated that flower anthocyanins were extracted and analysed for the first time and petunidin 3,5 diglucoside (58.8% in Korba and 54.93% in Beja) was the major anthocyanin followed by delphinidin 3,5 diglucoside (36.45% in Korba and 44.45% in Beja). During the development of borage flower, anthocyanin yield increased significantly (P < 0.05) from budding to full flowering stages in the two studied regions. Antioxidant activity of anthocyanin extracts and essential oil followed the same trend as anthocyanin and...
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Variation in anthocyanin and essential oil composition and their antioxidant potentialities during flower development of Borage (Borago officinalis L.)
Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 2013Co-Authors: Nidhal Salem, M. Hammami, Kamel Msaada, Ferid Limam, G. Vasapollo, Brahim MarzoukAbstract:The aim of this study was to examine the chemical composition and antioxidant activities of the essential oils and anthocyanin of Borago officinalis flowers. At the flowering stage, the essential oil yield in Korba (0.95 ± 0.03%) was higher than that in Beja (0.29 ± 0.03%, w/w). The essential oil composition was characterized by high proportions of (E,E)-decadienal, the main compound of monoterpene aldehydes class. The reverse phase–high-performance liquid chromatography–mass spectrometry analysis indicated that flower anthocyanins were extracted and analysed for the first time and petunidin 3,5 diglucoside (58.8% in Korba and 54.93% in Beja) was the major anthocyanin followed by delphinidin 3,5 diglucoside (36.45% in Korba and 44.45% in Beja). During the development of borage flower, anthocyanin yield increased significantly (P
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Growth and Fatty Acid Composition of Borage (Borago officinalis L.) Leaves and Seeds Cultivated in Saline Medium
Journal of Plant Growth Regulation, 2012Co-Authors: Khaoula Jaffel-hamza, Salma Sai-kachout, Jamel Harrathi, Mokhtar Lachaâl, Brahim MarzoukAbstract:The effects of salinity on growth and fatty acid composition of borage (Borago officinalis L.) leaves and seeds grown in hydroponic medium were investigated. Three different levels of NaCl (25, 50, and 75 mM) were applied. The first results showed that salinity significantly reduced plant growth by 56.5 % at 75 mM compared with the control, suppressed seed yield at 50 and 75 mM, and increased lipid peroxidation. Raising NaCl concentrations led to an important decrease in total fatty acid (TFA) content by 77 % at 75 mM NaCl. Moreover, the polyunsaturated fatty acid (PUFA) content decreased, whereas the saturated fatty acids increased with respect to increasing salinity. The 25 mM NaCl level did not modify the fatty acid composition of seeds and their contents.
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effect of harvesting time on phenolic compounds and antiradical scavenging activity of Borago officinalis seed extracts
Industrial Crops and Products, 2010Co-Authors: Baya Mhamdi, Aidi W Wannes, Jazia Sriti, I Jellali, Riadh Ksouri, Brahim MarzoukAbstract:Abstract Borage seeds ( Borago officinalis L . ) were sampled in Amdoun region (North of Tunisia) during their ripening stage in order to analyse their phenolic compounds and to ascertain their antiradical scavenging activity. The harvesting time effect on some physical properties of borage seed was significant. The increase of dry weight (from 10 to 90%) during ripeness was correlated negatively with that of moisture content (from 90 to 10%). Seed phenolic contents ranged from 2.45 to 10.98 mg GAE/g DW. HPLC analysis permitted to identify nine phenolic acids during seed maturation with the predominance of rosmarinic, syringic and sinapic acids. Total phenolic contents and IC 50 values in seed during their maturation, allowed to conclude that antioxidant activity does not depend on the high content of total phenolics but on the phenolic composition.
Baya Mhamdi - One of the best experts on this subject based on the ideXlab platform.
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Lipid and volatile composition of Borage (Borago officinalis L.) leaf
2017Co-Authors: Wissem Aidi Wannes, Baya Mhamdi, Moufida Saidani Tounsi, Brahim MarzoukAbstract:Lipid and volatile composition of Borago officinalis L. leaf was investigated. The results showed that α-linolenic acid was the major fatty acid followed by stearidonic acid. Total lipids were composed of neutral and polar lipids. Polar lipids were mainly composed of phosphatidylcholine as the major phospholipid, whereas monogalactosyldiacylglycerol was the major galactolipid. Quant to neutral lipids, they were mainly composed of triacylglycerols. The volatile composition exhibited the presence of many green note compounds such as hexanal, (E)-2-hexenal, hexanol, (Z)-3-hexenol, (E)-2-hexenol and nonanol. Borage leaf appears to be an important source of essential fatty acids, phospholipids, glycolipids and green note volatile compounds for food, cosmetic, pharmaceutical and biomedical applications.
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Effect of harvesting time on phenolic compounds and antiradical scavenging activity of Borago officinalis seed extracts
Industrial Crops and Products, 2010Co-Authors: Baya Mhamdi, Jazia Sriti, I Jellali, Riadh Ksouri, W. Aidi Wannes, Brahim MarzoukAbstract:Abstract Borage seeds ( Borago officinalis L . ) were sampled in Amdoun region (North of Tunisia) during their ripening stage in order to analyse their phenolic compounds and to ascertain their antiradical scavenging activity. The harvesting time effect on some physical properties of borage seed was significant. The increase of dry weight (from 10 to 90%) during ripeness was correlated negatively with that of moisture content (from 90 to 10%). Seed phenolic contents ranged from 2.45 to 10.98 mg GAE/g DW. HPLC analysis permitted to identify nine phenolic acids during seed maturation with the predominance of rosmarinic, syringic and sinapic acids. Total phenolic contents and IC 50 values in seed during their maturation, allowed to conclude that antioxidant activity does not depend on the high content of total phenolics but on the phenolic composition.
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effect of harvesting time on phenolic compounds and antiradical scavenging activity of Borago officinalis seed extracts
Industrial Crops and Products, 2010Co-Authors: Baya Mhamdi, Aidi W Wannes, Jazia Sriti, I Jellali, Riadh Ksouri, Brahim MarzoukAbstract:Abstract Borage seeds ( Borago officinalis L . ) were sampled in Amdoun region (North of Tunisia) during their ripening stage in order to analyse their phenolic compounds and to ascertain their antiradical scavenging activity. The harvesting time effect on some physical properties of borage seed was significant. The increase of dry weight (from 10 to 90%) during ripeness was correlated negatively with that of moisture content (from 90 to 10%). Seed phenolic contents ranged from 2.45 to 10.98 mg GAE/g DW. HPLC analysis permitted to identify nine phenolic acids during seed maturation with the predominance of rosmarinic, syringic and sinapic acids. Total phenolic contents and IC 50 values in seed during their maturation, allowed to conclude that antioxidant activity does not depend on the high content of total phenolics but on the phenolic composition.
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BIOCHEMICAL CHARACTERIZATION OF BORAGE (Borago OFFICINALIS L.) SEEDS
Journal of Food Biochemistry, 2009Co-Authors: Baya Mhamdi, Wissem Aidi Wannes, Soumaya Bourgou, Brahim MarzoukAbstract:Gas chromatography–mass spectrometry analysis of seed Borago officinalis essential oil (EO) revealed the presence of 16 volatile components. β-Caryophyllene (26%) and p-cymene-8-ol (19.7%) represented the major components, while nonadecane (0.7%) and hexanol (0.7%) were the minor ones. The EO composition was characterized by higher abundance of oxygenated monoterpenes (27.7%), followed by sesquiterpenes (26%). Fatty acid composition showed the predominance of linoleic (35.4%), oleic (24.2%) and γ-linolenic (20.4%) acids. Polyphenols were analyzed by reversed-phase high-performance liquid chromatography after acid hydrolysis of phenolic acid esters. Six phenolic acids were identified in seed extract and rosmarinic acid was the predominant one with 1.65 mg/g dry matter weight equivalent to 33% of total phenolic acids. PRACTICAL APPLICATIONS Borage (Borago officinalis L.) is of great interest because of its medicinal and nutritional properties. In fact, thanks to its characteristic composition in fatty acids, particularly high levels of gamma-linolenic acid in its seed oil, borage has gained importance. The potent consumers of this medicinal plant are hypertensive and hypercholesterolemic people. Borage consumption is also recommended for people suffering from rheumatism and eczema. Unfortunately, the knowledge about antioxidative/antiradical properties of borage is very scanty. So, recently, an extensive investigation was focused on the antioxidant properties of borage extracts. These extracts showed excellent antioxidant properties and their effects were attributed to their phenolic constituents. These antioxidants can be concentrated, either as crude extracts or individual phenolic compounds, to be used in highly unsaturated oils such as marine oils. Furthermore, borage consumption has been reported as a possible gastric cancer protective factor.
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Volatiles From Leaves and Flowers of Borage (Borago officinalis L.)
Journal of Essential Oil Research, 2009Co-Authors: Baya Mhamdi, Wissem Aidi Wannes, Wissal Dhiffi, Brahim MarzoukAbstract:Abstract The essential oils obtained from the fresh leaves and flowers of Borago officinalis collected in the region of Amdoun (northwestern Tunisia) were examined by GC and GC/MS. Twenty-three volatile compounds were identified. The oil yields expressed on a dry weight basis were 0.14% and 0.24% for the leaves and flowers, respectively. The main compound determined in flower and leaf oil was (E,E)-2,4-decadienal with 43.4% and 26.9% in the leaf and flower oils, respectively. The oils from the two organs showed the predominance of the aldehyde class which constituted 61.2% and 61.9% in the leaf and flower oils, respectively. Other classes present in important percentages in the two organs were alcohols (22.4%) in the leaf oil and phenols (13.2%) and monoterpene hydrocarbons (12.2%) in the flower oil.
Qasimov Nemat - One of the best experts on this subject based on the ideXlab platform.
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EFFECT OF SALINITY STRESS ON BIOCHEMICAL PARAMETERS AND GROWTH OF BORAGE (Borago OFFICINALIS L.)
Plant Physiology, 2016Co-Authors: Zahed Chakovari Simin, Enteshari Shekoofeh, Qasimov NematAbstract:Salinity is one of the most important limiting factors for growth and product of plants around the world. Identification of salt tolerant varieties and improvement of plants tolerance are the most effective way to increase its performance. Experiments were conducted in a hydroponic system in order to study the reaction of borage (Borago officinalis L.) to salinity in terms of developmental changes and pigment content. Salinity was applied by 100 mM Sodium Chloride and Sodium Sulfate salts by the ratio of two to one on borage at the 4-leaf stage. Wet and dry weights of shoots and roots, chlorophyll, protein, proline, anthocyanins, soluble carbohydrate, and reducing carbohydrates were determined. Decrease in fresh and dry weights of shoots and roots was observed in the salinity condition and the fresh weight loss in shoots was significant (p
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effect of salinity stress on biochemical parameters and growth of borage Borago officinalis l
Plant Physiology, 2016Co-Authors: Zahed Chakovari Simin, Enteshari Shekoofeh, Qasimov NematAbstract:Salinity is one of the most important limiting factors for growth and product of plants around the world. Identification of salt tolerant varieties and improvement of plants tolerance are the most effective way to increase its performance. Experiments were conducted in a hydroponic system in order to study the reaction of borage (Borago officinalis L.) to salinity in terms of developmental changes and pigment content. Salinity was applied by 100 mM Sodium Chloride and Sodium Sulfate salts by the ratio of two to one on borage at the 4-leaf stage. Wet and dry weights of shoots and roots, chlorophyll, protein, proline, anthocyanins, soluble carbohydrate, and reducing carbohydrates were determined. Decrease in fresh and dry weights of shoots and roots was observed in the salinity condition and the fresh weight loss in shoots was significant (p<0.05). Chlorophyll content also decreased but this was not significant. Salinity stress decreased the amount of protein in shoots and roots compared to control. Proline contents in leaves and roots increased significantly under salt stress compared to control. On the average, in comparison to control, salinity stress decreased the amount of soluble carbohydrates in roots and shoots but this reduction was not significant.The amount of reducing sugars under salinity stress increased in shoots in comparison with control but they decreased in roots. Moreover, the amount of anthocyanin increased under salinity stress in comparison with control plants. It was concluded that borage was able to resist against stress due to the changes in the contents of these compounds under salinity.
Zahed Chakovari Simin - One of the best experts on this subject based on the ideXlab platform.
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EFFECT OF SALINITY STRESS ON BIOCHEMICAL PARAMETERS AND GROWTH OF BORAGE (Borago OFFICINALIS L.)
Plant Physiology, 2016Co-Authors: Zahed Chakovari Simin, Enteshari Shekoofeh, Qasimov NematAbstract:Salinity is one of the most important limiting factors for growth and product of plants around the world. Identification of salt tolerant varieties and improvement of plants tolerance are the most effective way to increase its performance. Experiments were conducted in a hydroponic system in order to study the reaction of borage (Borago officinalis L.) to salinity in terms of developmental changes and pigment content. Salinity was applied by 100 mM Sodium Chloride and Sodium Sulfate salts by the ratio of two to one on borage at the 4-leaf stage. Wet and dry weights of shoots and roots, chlorophyll, protein, proline, anthocyanins, soluble carbohydrate, and reducing carbohydrates were determined. Decrease in fresh and dry weights of shoots and roots was observed in the salinity condition and the fresh weight loss in shoots was significant (p
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effect of salinity stress on biochemical parameters and growth of borage Borago officinalis l
Plant Physiology, 2016Co-Authors: Zahed Chakovari Simin, Enteshari Shekoofeh, Qasimov NematAbstract:Salinity is one of the most important limiting factors for growth and product of plants around the world. Identification of salt tolerant varieties and improvement of plants tolerance are the most effective way to increase its performance. Experiments were conducted in a hydroponic system in order to study the reaction of borage (Borago officinalis L.) to salinity in terms of developmental changes and pigment content. Salinity was applied by 100 mM Sodium Chloride and Sodium Sulfate salts by the ratio of two to one on borage at the 4-leaf stage. Wet and dry weights of shoots and roots, chlorophyll, protein, proline, anthocyanins, soluble carbohydrate, and reducing carbohydrates were determined. Decrease in fresh and dry weights of shoots and roots was observed in the salinity condition and the fresh weight loss in shoots was significant (p<0.05). Chlorophyll content also decreased but this was not significant. Salinity stress decreased the amount of protein in shoots and roots compared to control. Proline contents in leaves and roots increased significantly under salt stress compared to control. On the average, in comparison to control, salinity stress decreased the amount of soluble carbohydrates in roots and shoots but this reduction was not significant.The amount of reducing sugars under salinity stress increased in shoots in comparison with control but they decreased in roots. Moreover, the amount of anthocyanin increased under salinity stress in comparison with control plants. It was concluded that borage was able to resist against stress due to the changes in the contents of these compounds under salinity.
C. Montaner - One of the best experts on this subject based on the ideXlab platform.
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Genetic diversity in a collection of borage (Borago officinalis) germplasm
Botany, 2008Co-Authors: Ester Sales, C. Montaner, José M. Muniozgurenj.m. Muniozguren, Miguel Carravedom. Carravedo, J. M. AlvarezAbstract:The common borage, Borago officinalis L., is of Euro-Mediterranean origin, but is found extensively in the wild. It is also cultivated as a garden plant, crop vegetable, or pharmaceutical herb. Analysis of random amplified polymorphic DNAs (RAPDs) revealed high levels of genetic diversity among 10 borage wild accessions and seven cultivars, which included five white-flowered selections grown in northern Spain for petiole production, and two blue-flowered lines used medicinally. These latter two cultivars and populations, sampled far from the original habitat of the species, were closely related to wild borage populations from northern Europe. The two medicinal cultivars did not differ from each other, while those used for petiole production differed significantly from their Spanish wild relatives. Differences among the 17 populations accounted for 41.4% of the total genetic variability; this value increased to 50.8% when only the 10 wild populations were considered. Population differentiation and within-p...
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Study of pollen cytology and evaluation of pollen viability using in vivo and in vitro test, in borage (Borago officinalis L.)
Grana, 2003Co-Authors: C. Montaner, Elena Floris, J. M. AlvarezAbstract:Borage (Borago officinalis L.) pollen grains have been ratified as trincellular. The tetrazolium test is a reliable method to evaluate pollen viability in borage. A satisfactory medium for pollen germination and pollen tube growth was achieved in a liquid medium supplemented with 200 g/l of sucrose, 100 ppm of H {\rm _{3}} BO {\rm _{3}} and 300 ppm of Ca(NO {\rm _{3}} ) {\rm _{2}} .4H {\rm _{2}} O at pH 7 and 18°C. The pollen tube pathway after effective pollination is described. The importance of temperature in borage pollen biology is proved.
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Geitonogamy: a mechanism responsible for high selfing rates in borage (Borago officinalis L.)
Theoretical and Applied Genetics, 2001Co-Authors: C. Montaner, Elena Floris, J M AlvarezAbstract:Borage, a species traditionaly defined as allogamous, has revealed a high selfing rate although a mechanism of protandry has been confirmed in this plant. Studies investigating flower behaviour showed that several flowers open every day and that others are also receptive at the same time within a plant. Moreover, pollinator behaviour, mainly by bees, contributes to the selfing rate because it is demonstrated that these insects visit several flowers in a given plant before flying to other plants. The ecological studies reported here reveal the contribution of geitonogamous pollination to the high selfing rate detected in Borago officinalis L.
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IS SELF-COMPATIBILITY THE MAIN BREEDING SYSTEM IN BORAGE (Borago OFFICINALIS L.)
Theoretical and Applied Genetics, 2000Co-Authors: C. Montaner, Elena Floris, J M AlvarezAbstract:The polygenic postzygotic self-incompatible system reported in borage (Borago officinalis L.) is refuted. The behaviour of pollen tubes after self- and cross-pollination, analysis of the crossability coefficient, seed set after continuous generations of self-pollination and the effects of inbreeding depression in borage were studied. Evidence of self-compatibility was established. The influence of protandry in a self-compatible system is also discussed.
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Is self-compatibility the main breeding system in borage (Borago officinalis L.)?
Theoretical and Applied Genetics, 2000Co-Authors: C. Montaner, Elena Floris, J M AlvarezAbstract:The polygenic postzygotic self-incompatible system reported in borage (Borago officinalis L.) is refuted. The behaviour of pollen tubes after self- and cross-pollination, analysis of the crossability coefficient, seed set after continuous generations of self-pollination and the effects of inbreeding depression in borage were studied. Evidence of self-compatibility was established. The influence of protandry in a self-compatible system is also discussed.