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George K. Psaras - One of the best experts on this subject based on the ideXlab platform.
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development and structure of drought tolerant leaves of the mediterranean shrub Capparis spinosa l
Annals of Botany, 2003Co-Authors: Sophia Rhizopoulou, George K. PsarasAbstract:Capparis spinosa (caper), a winter-deciduous perennial shrub, is a consistent floristic element of Mediterranean ecosystems, growing from May to October, i.e. entirely during the prolonged summer drought. The internal architecture of young and fully expanded leaves was studied, along with certain physiological characteristics. Capparis spinosa possesses thick, amphistomatic and homobaric leaves with a multilayered mesophyll. The latter possesses an increased number of photosynthesizing cells per unit leaf surface, a large surface area of mesophyll cells facing intercellular spaces (Smes) and a low percentage of intercellular space per tissue volume. Smes and chlorophyll content attain their maximum values synchronously, slightly before full leaf expansion. Nitrogen investment is also completed before full leaf expansion. The structural features, in combination with the water status, could contribute to enhanced rates of transpiration and photosynthesis under field water shortage conditions.
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Development and Structure of Drought‐tolerant Leaves of the Mediterranean Shrub Capparis spinosa L.
Annals of botany, 2003Co-Authors: Sophia Rhizopoulou, George K. PsarasAbstract:Capparis spinosa (caper), a winter-deciduous perennial shrub, is a consistent floristic element of Mediterranean ecosystems, growing from May to October, i.e. entirely during the prolonged summer drought. The internal architecture of young and fully expanded leaves was studied, along with certain physiological characteristics. Capparis spinosa possesses thick, amphistomatic and homobaric leaves with a multilayered mesophyll. The latter possesses an increased number of photosynthesizing cells per unit leaf surface, a large surface area of mesophyll cells facing intercellular spaces (Smes) and a low percentage of intercellular space per tissue volume. Smes and chlorophyll content attain their maximum values synchronously, slightly before full leaf expansion. Nitrogen investment is also completed before full leaf expansion. The structural features, in combination with the water status, could contribute to enhanced rates of transpiration and photosynthesis under field water shortage conditions.
Sophia Rhizopoulou - One of the best experts on this subject based on the ideXlab platform.
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development and structure of drought tolerant leaves of the mediterranean shrub Capparis spinosa l
Annals of Botany, 2003Co-Authors: Sophia Rhizopoulou, George K. PsarasAbstract:Capparis spinosa (caper), a winter-deciduous perennial shrub, is a consistent floristic element of Mediterranean ecosystems, growing from May to October, i.e. entirely during the prolonged summer drought. The internal architecture of young and fully expanded leaves was studied, along with certain physiological characteristics. Capparis spinosa possesses thick, amphistomatic and homobaric leaves with a multilayered mesophyll. The latter possesses an increased number of photosynthesizing cells per unit leaf surface, a large surface area of mesophyll cells facing intercellular spaces (Smes) and a low percentage of intercellular space per tissue volume. Smes and chlorophyll content attain their maximum values synchronously, slightly before full leaf expansion. Nitrogen investment is also completed before full leaf expansion. The structural features, in combination with the water status, could contribute to enhanced rates of transpiration and photosynthesis under field water shortage conditions.
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Development and Structure of Drought‐tolerant Leaves of the Mediterranean Shrub Capparis spinosa L.
Annals of botany, 2003Co-Authors: Sophia Rhizopoulou, George K. PsarasAbstract:Capparis spinosa (caper), a winter-deciduous perennial shrub, is a consistent floristic element of Mediterranean ecosystems, growing from May to October, i.e. entirely during the prolonged summer drought. The internal architecture of young and fully expanded leaves was studied, along with certain physiological characteristics. Capparis spinosa possesses thick, amphistomatic and homobaric leaves with a multilayered mesophyll. The latter possesses an increased number of photosynthesizing cells per unit leaf surface, a large surface area of mesophyll cells facing intercellular spaces (Smes) and a low percentage of intercellular space per tissue volume. Smes and chlorophyll content attain their maximum values synchronously, slightly before full leaf expansion. Nitrogen investment is also completed before full leaf expansion. The structural features, in combination with the water status, could contribute to enhanced rates of transpiration and photosynthesis under field water shortage conditions.
Abdelhamid Khaldi - One of the best experts on this subject based on the ideXlab platform.
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Capparis spinosa leaves extract: Source of bioantioxidants with nephroprotective and hepatoprotective effects.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2017Co-Authors: Nizar Tlili, Nizar Nasri, Anouar Feriani, Ezzeddine Saadoui, Abdelhamid KhaldiAbstract:Capparis spinosa, Capparidaceae, is largely distributed all over the Mediterranean Basin and is traditionally used to treat many illnesses, such as liver and kidney diseases. The aim of the current study was to explore the antioxidant, nephroprotective and hepatoprotective effects of methanolic extract of Capparis spinosa leaves (MECS) associated with its phytochemical content. The levels of total phenolics, flavonoids and condensed tannins were 23.37mgGAE/g, 9.05mgQE/g and 9.35mgTAE/g, respectively. HPLC analysis revealed nine compounds, namely rutin, resveratrol, coumarin, epicatechin, luteolin, catechin, kaempferol, vanillic acid and gallic acid. The MECS showed interesting antioxidant capacity. The MECS-treatment significantly reduced the increased plasma levels of creatinine, urea and uric acid, reduced the elevated MDA levels, significantly reduced the antioxidant enzyme activities and restored the kidney damage, provoked by cisplatin-treatment. Furthermore, MECS-treatment significantly prevented the increase in serum ALT, AST and LDH levels in acute liver damage induced by CCl4, decreased the amount of hepatic malondialdehyde (MDA) formation and elevated the activities of SOD, CAT and GPx, and restored liver injury. This study supports the traditionally use of C. spinosa to cure kidney and liver diseases. The obtained results highlighted the possible use of C. spinosa as a source of phytochemical with important biological advantages.
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Wild Tunisian Capparis spinosa L.: Subspecies and Seed Fatty Acids
2015Co-Authors: Ezzeddine Saadaoui, Nizar Tlili, Arbi Guetat, Chokri Massoudi, Abdelhamid KhaldiAbstract:A B S T R A C T The caper (Capparis spinosa L.) is represented in Tunisia by two subspecies: Capparis spinosa subsp. spinosa in the north of the country and subsp. rupestris (Sibth. & Sm.) Nyman which exists from the North to the South. Fatty acids profiles from nine wild populations belonging to both subspecies were identified using GC-MS. The three major fatty acids were oleic, linoleic and palmitic acids. However, a high variation in the composition of fatty acids was observed among the populations and subspecies. The percentages of stearic, palmitoleic, behenic and arachidic acids were high in C. spinosa subsp. rupestris. Oleic and linoleic acids were more represented in C. spinosa subsp. spinosa. The only representative population of the south, Chenini Tataouine, showed fatty acids composition different from all other populations. The study proves the geography and the subspecies effects in fatty acids composition of Capparis spinosa seeds.
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Subspecific variability of Tunisian wild populations of Capparis spinosa L.
Journal of Medicinal Plants Research, 2011Co-Authors: Ezzeddine Saadaoui, Nizar Tlili, Arbi Guetat, Mohamed El Gazzah, Abdelhamid KhaldiAbstract:Fifteen Tunisian wild populations of caper (Capparis spinosa L.) from different geographical regions, including inerm and thorny morphotypes were assessed for their phenotypical variation using eight morphological traits. The thorny type is restricted to the North of the country, while the inerm is wildly distributed from the North to the South. The data underwent an analysis of variance and a multivariate analysis. Significant differences among populations and among morphotypes for the eight descriptors were observed. The level of variation was high among populations belonging to the inerm type. The PCA and HAC groupings performed on all measured characters showed a clear discrimination between thorny and inerm morphotypes. The subclusters are concordant with the recent botanical subdivision of C. spinosa subsp. spinosa and C. spinosa subsp. rupestris (Sm.) Nyman. These two wild subspecies showed different ecological characteristics. These differences concerned the bioclimate and the soil proprieties, which the electrical conductivity (EC), the chemical composition (Na+, Ca++, Mg++, SO4--, Cl- and HCO3-) and the soil texture. In addition, the ecological location seems to a factor structuring the variability of the inerm populations. Key words: Capparis spinosa L., phenotypical variation, subspecies, Tunisia.
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protein lipid aliphatic and triterpenic alcohol content of caper seeds Capparis spinosa
Journal of the American Oil Chemists' Society, 2011Co-Authors: Nizar Tlili, Nizar Nasri, Abdelhamid Khaldi, Taissir El Guizani, Saida TrikiAbstract:Capparis spinosa has a large natural distribution over the Mediterranean basin. It is used in traditional medicines, and it is one of the most commonly found aromatics in the Mediterranean kitchen. In this paper, the total storage protein and lipids of Tunisian Capparis spinosa seeds were investigated, and the quantities were ca. 27% and ca. 33%, respectively. In this study also the composition of the aliphatic and triterpenic alcohols of C. spinosa was characterized for the first time. Aliphatic alcohol contents were ca. 45 mg kg−1 of total extracted lipids. Three compounds were identified, hexadecanol, octadecanol and tetracosanol, of which octadecanol was the major compound (ca. 28 mg kg−1). Triterpenic alcohol content was 396.82 mg kg−1. Citrostadienol was the major compound (ca. 170 mg kg−1). β-Amyrin, gramisterol, cycloartanol and 2,4 methylcycloartenol were also detected and identified.
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phenolic compounds and vitamin antioxidants of caper Capparis spinosa
Plant Foods for Human Nutrition, 2010Co-Authors: Nizar Tlili, Abdelhamid Khaldi, Saida Triki, Sergi MunneboschAbstract:Capparis spinosa shows strong resistance to the adverse Mediterranean conditions and it has nutritional and medicinal value. The aim of this study was to evaluate the contents of total phenolic compounds, rutin, tocopherols, carotenoids and vitamin C in leaves and flower buds of C. spinosa from different locations in Tunisia. Results showed the richness of caper with these compounds, especially phenolic compounds. Interestingly, it was also found the presence of both α- and γ-tocopherol in buds. Moreover, C. spinosa contained an appreciable level of vitamin C. The significant amounts of these antioxidants confirm the nutritional and medicinal value of caper.
Nizar Tlili - One of the best experts on this subject based on the ideXlab platform.
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Capparis spinosa leaves extract: Source of bioantioxidants with nephroprotective and hepatoprotective effects.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2017Co-Authors: Nizar Tlili, Nizar Nasri, Anouar Feriani, Ezzeddine Saadoui, Abdelhamid KhaldiAbstract:Capparis spinosa, Capparidaceae, is largely distributed all over the Mediterranean Basin and is traditionally used to treat many illnesses, such as liver and kidney diseases. The aim of the current study was to explore the antioxidant, nephroprotective and hepatoprotective effects of methanolic extract of Capparis spinosa leaves (MECS) associated with its phytochemical content. The levels of total phenolics, flavonoids and condensed tannins were 23.37mgGAE/g, 9.05mgQE/g and 9.35mgTAE/g, respectively. HPLC analysis revealed nine compounds, namely rutin, resveratrol, coumarin, epicatechin, luteolin, catechin, kaempferol, vanillic acid and gallic acid. The MECS showed interesting antioxidant capacity. The MECS-treatment significantly reduced the increased plasma levels of creatinine, urea and uric acid, reduced the elevated MDA levels, significantly reduced the antioxidant enzyme activities and restored the kidney damage, provoked by cisplatin-treatment. Furthermore, MECS-treatment significantly prevented the increase in serum ALT, AST and LDH levels in acute liver damage induced by CCl4, decreased the amount of hepatic malondialdehyde (MDA) formation and elevated the activities of SOD, CAT and GPx, and restored liver injury. This study supports the traditionally use of C. spinosa to cure kidney and liver diseases. The obtained results highlighted the possible use of C. spinosa as a source of phytochemical with important biological advantages.
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Wild Tunisian Capparis spinosa L.: Subspecies and Seed Fatty Acids
2015Co-Authors: Ezzeddine Saadaoui, Nizar Tlili, Arbi Guetat, Chokri Massoudi, Abdelhamid KhaldiAbstract:A B S T R A C T The caper (Capparis spinosa L.) is represented in Tunisia by two subspecies: Capparis spinosa subsp. spinosa in the north of the country and subsp. rupestris (Sibth. & Sm.) Nyman which exists from the North to the South. Fatty acids profiles from nine wild populations belonging to both subspecies were identified using GC-MS. The three major fatty acids were oleic, linoleic and palmitic acids. However, a high variation in the composition of fatty acids was observed among the populations and subspecies. The percentages of stearic, palmitoleic, behenic and arachidic acids were high in C. spinosa subsp. rupestris. Oleic and linoleic acids were more represented in C. spinosa subsp. spinosa. The only representative population of the south, Chenini Tataouine, showed fatty acids composition different from all other populations. The study proves the geography and the subspecies effects in fatty acids composition of Capparis spinosa seeds.
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Subspecific variability of Tunisian wild populations of Capparis spinosa L.
Journal of Medicinal Plants Research, 2011Co-Authors: Ezzeddine Saadaoui, Nizar Tlili, Arbi Guetat, Mohamed El Gazzah, Abdelhamid KhaldiAbstract:Fifteen Tunisian wild populations of caper (Capparis spinosa L.) from different geographical regions, including inerm and thorny morphotypes were assessed for their phenotypical variation using eight morphological traits. The thorny type is restricted to the North of the country, while the inerm is wildly distributed from the North to the South. The data underwent an analysis of variance and a multivariate analysis. Significant differences among populations and among morphotypes for the eight descriptors were observed. The level of variation was high among populations belonging to the inerm type. The PCA and HAC groupings performed on all measured characters showed a clear discrimination between thorny and inerm morphotypes. The subclusters are concordant with the recent botanical subdivision of C. spinosa subsp. spinosa and C. spinosa subsp. rupestris (Sm.) Nyman. These two wild subspecies showed different ecological characteristics. These differences concerned the bioclimate and the soil proprieties, which the electrical conductivity (EC), the chemical composition (Na+, Ca++, Mg++, SO4--, Cl- and HCO3-) and the soil texture. In addition, the ecological location seems to a factor structuring the variability of the inerm populations. Key words: Capparis spinosa L., phenotypical variation, subspecies, Tunisia.
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protein lipid aliphatic and triterpenic alcohol content of caper seeds Capparis spinosa
Journal of the American Oil Chemists' Society, 2011Co-Authors: Nizar Tlili, Nizar Nasri, Abdelhamid Khaldi, Taissir El Guizani, Saida TrikiAbstract:Capparis spinosa has a large natural distribution over the Mediterranean basin. It is used in traditional medicines, and it is one of the most commonly found aromatics in the Mediterranean kitchen. In this paper, the total storage protein and lipids of Tunisian Capparis spinosa seeds were investigated, and the quantities were ca. 27% and ca. 33%, respectively. In this study also the composition of the aliphatic and triterpenic alcohols of C. spinosa was characterized for the first time. Aliphatic alcohol contents were ca. 45 mg kg−1 of total extracted lipids. Three compounds were identified, hexadecanol, octadecanol and tetracosanol, of which octadecanol was the major compound (ca. 28 mg kg−1). Triterpenic alcohol content was 396.82 mg kg−1. Citrostadienol was the major compound (ca. 170 mg kg−1). β-Amyrin, gramisterol, cycloartanol and 2,4 methylcycloartenol were also detected and identified.
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phenolic compounds and vitamin antioxidants of caper Capparis spinosa
Plant Foods for Human Nutrition, 2010Co-Authors: Nizar Tlili, Abdelhamid Khaldi, Saida Triki, Sergi MunneboschAbstract:Capparis spinosa shows strong resistance to the adverse Mediterranean conditions and it has nutritional and medicinal value. The aim of this study was to evaluate the contents of total phenolic compounds, rutin, tocopherols, carotenoids and vitamin C in leaves and flower buds of C. spinosa from different locations in Tunisia. Results showed the richness of caper with these compounds, especially phenolic compounds. Interestingly, it was also found the presence of both α- and γ-tocopherol in buds. Moreover, C. spinosa contained an appreciable level of vitamin C. The significant amounts of these antioxidants confirm the nutritional and medicinal value of caper.
Ji Yu-bin - One of the best experts on this subject based on the ideXlab platform.
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Study of chemical constituents in n-butyl alcohol extract of Capparis spinosa L.
Journal of Harbin University of Commerce, 2011Co-Authors: Ji Yu-binAbstract:The chemical constituments in n-butyl alcohol extract of Capparis spinosa L.were studied.To provide scientific basis for further explore extract methods of chemical constituents of Capparis spinosa L.The percolation,soxhlet extractor and silica gel column chromatography were used to initially extract the fruit of Capparis spinosa L.The extract of n-butanol alcohol was separated and purificated by column chromatography with silica gel and Sephadex LH-20,and recrystallization.The compounds were identified on the basis of physicochemical constants,spectrum analysis and HPLC-MS.Three obtained compounds were compound Ⅰ(uracil), Ⅱ(p-hydroxybenzoic acid), Ⅲ(stachydrine),respectively.The three compounds were known compounds.Compound Ⅲ(stachydrine) was an active ingredient of alkaloids.
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Inhibition of total oil from Capparis spinosa on proliferation of human gastric carcinoma SGC-7901 cells
Journal of Harbin University of Commerce, 2010Co-Authors: Ji Yu-binAbstract:To investigate the anti-proliferative effect of total oil from Capparis spinosa on SGC-7901 cells.MTT,SRB and colony formation are used to study anti-neoplastic action of total oil on SGC-7901 cells in vitro.The apoptosis morphological changes are observed under laser confocal microscope by staining with FITC-Annexin V/PI.It is found that the oil from Capparis spinosa can inhibit the growth of SGC-7901 cells.The IC50,GI50,LC50 and TGI are 145.5 μg/mL,121.32 μg/mL,900.96 μg/mL and 240.55 μg/mL,respectively.In addition,the IC50 of colony formation is 160.04 μg/mL.After SGC-7901 cells are treated by the total oil in Capparis spinosa for 24 h,morphological changes of apoptosis are observed.The early,middle and final phrases of apoptotic cells are detected after treating with 75,150 and 300 μg/mL of the total oil from Capparis spinosa for 24 h under laser confocal microscope by staining with Annexin V/PI.Oil has significant anti-tumour effect and the mechanism may be attributed to inducing cell apoptosis.
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Effect of Capparis spinosa L. Polar Alkaloids on Reactive Oxygen Species,Ca~(2+) and Caspase-9,3 in HepG-2 Cell
The Chinese Pharmaceutical Journal, 2010Co-Authors: Ji Yu-binAbstract:OBJECTIVE To explore the mechanism of the apoptosis inducing effect of Capparis spinosa L.polar alkaloid on human heptocarcinoma cell Line HepG-2,and to investigate the effects on(reactive oxygen species,ROS),Ca2+ levels and Caspase-9,3 in HepG-2 cells.METHODS The changes of reactive oxygen species(ROS) levels in the HepG-2 cells were studied by flowcytometry.The intracellular Ca2+ levels in the HepG-2 cells were observed by laser confocal microscope.The activities of Caspase-9,3 were measured by enzyme-labeled method.RESULTS The ROS and intracellular Ca2+ levels in HepG-2 cells were increased in various degrees induced by Capparis spinosa L.polar alkaloid.In addition,the activities of Caspase-9,3 were increased by the function of Capparis spinosa L.polar alkaloid.CONCLUSION CSPA can increase the ROS and intracellular Ca2+ levels,cause the overload of intracellular Ca2+ levels and activate the Caspase response,which may induce the apoptosis of HepG-2 cell.
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Study on inhibition of water-soluble alkaloids in Capparis spinosa in proliferation of human HepG-2 cell
Journal of Harbin University of Commerce, 2009Co-Authors: Ji Yu-binAbstract:To study the anti-neoplastic effect of alkaloids.MTT are used to study anti-neoplastic action of oil in vitro.The effect of water-soluble alkaloids on cell apoptosis and different stages of cell cycles in human HepG-2 cells is studied by flow cytometry.The proliferation of HepG-2 cells is inhibited after treated with 10,50,100,150,200 and 300 μg/mL the water-soluble alkaloids in Capparis spinosa for 72 h and the IC50 is 171.5 μg/mL.The apoptotic cells are detected after treating with 180 and 360 μg/mL of the water-soluble alkaloids in Capparis spinosa for 48 h.Cell cycle is also analyzed,with results showing that water-soluble alkaloids in Capparis spinos leads to obstructing of S and G2 stage.Water-soluble alkaloids have significant anti-tumour effect.
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Progress of study on Capparis spinosa
Journal of Harbin University of Commerce, 2006Co-Authors: Ji Yu-bin, Guo Shou-dong, Ji Chen-fengAbstract:To offer scientific basis for its following exploiture and application,summarizing its study on chemistry,pharmacology and clinical application.According to the current researches its ingredients are volatile(isothiocyanate,thymol,palmitic acid etc),indole,flavonoid,sitosterol,glucosinolate and some novel compounds;Capparis spinosa possesses other activities,such as antimicrobial and antifungal,anti-inflammatory,antihepatotoxic,antioxidant,hypolipiddemic and hypoglycaemic,diuretic,treating gout.Capparis spinosa is a kind of traditional medicine worth of being explored not only on chemistry but also on pharmacology.
