Marie Petrus - Academia.edu (original) (raw)

Papers by Marie Petrus

Research paper thumbnail of Ethnobotanical and pharmacological profile with propagation strategies of <i style="mso-bidi-font-style:normal">Mukia maderaspatana</i> (<span style="mso-ansi-language:EN-IN">L.) M. Roem.–A concise overview </span>

9-26<i style="mso-bidi-font-style: normal">Mukia maderaspatana (<span style=&q... more 9-26<i style="mso-bidi-font-style: normal">Mukia maderaspatana (<span style="letter-spacing: -.2pt;mso-ansi-language:EN-IN">L.) M. Roem. (Family-<span style="letter-spacing:-.2pt;mso-ansi-language: EN-IN">Cucurbitaceae) [syn. Melothria maderaspatana (L.) Cogn.] grows common in village hedges and other open habitats and in the disturbed sites of the semi-evergreen and deciduous forests. It is distributed throughout the tropics and subtropics of the Old World, where different parts of the plant are being utilized for the health-care needs of human beings and livestock. The leaves and tender shoots are also frequently consumed as a part of the South Indian cuisine. Preclinical animal experiments have substantiated a number of traditional and folkloric medicinal claims, including hypotensive, hypolipidemic, hepatoprotective, hypoglycaemic, immunomodulatory, antimicrobial, antiplatelet-aggregation, antiulcer, anxiolytic and local anaestheti...

Research paper thumbnail of Studies on the pharmacognostical and in vitro antioxidant potential of Cleome gynandra Linn. leaves

nopr.niscair.res.in

Cleome gynandra Linn. of Cleomaceae (Capparaceae) family is an annual herb, growing up to 0.6-1m ... more Cleome gynandra Linn. of Cleomaceae (Capparaceae) family is an annual herb, growing up to 0.6-1m in height and is popular in the Ayurveda, Siddha, Folk and Tibetian systems of medicine. The present paper deals with the pharmacognostical study, including the macroscopic, microscopic, fluorescence and phytochemical characteristics, which enables the identification of the leafy vegetable, as well as the determination of the antioxidant potential and the predominant classes of antioxidants that contribute to the activity.

Research paper thumbnail of Studies on the pharmacognostical and in vitro antioxidant potential of the leaves of Cleome gynandra Linn

... T Anbazhagi1, K Kadavul1*,G Suguna2 and AJA Petrus2 1Department of Plant Sciences, 2Departmen... more ... T Anbazhagi1, K Kadavul1*,G Suguna2 and AJA Petrus2 1Department of Plant Sciences, 2Department of Chemistry Kanchi Mamunivar Centre for Post-Graduate Studies, Puducherry-605 008, India *Correspondent author, E-mail: kadavul2004 ... d) Acetone Pale green Pink ...

Research paper thumbnail of Isolation and Characterisation of the Antioxidant Phenolic Metabolites of Boerhaavia erecta L. Leaves

Boerhaavia erecta L. (Nyctaginaceae) is a medicinal weed, indigenous to tropical America, but pre... more Boerhaavia erecta L. (Nyctaginaceae) is a medicinal weed, indigenous to tropical America, but presently pantropical and appear to constitute a functional leafy vegetable of certain communities. The taxon is reported to possess antiparasitic, antifungal, antibacterial, antiviral, antihistaminic, antioxidant and hepatoprotective properties. The residue of the ethanolic leaf-extract was fractionated into diethyl ether, acetone and methanol solubles. All the three fractions of the leaf extract scavenged reactive oxygen and nitrogen species effectively. The most polar methanol fraction was determined to possess Vitamin C equivalent antioxidant capacity (VCEAC) of 64.57±1.07%, which is about 78.4% of the dietary flavonol, rutin. The acetone and ether fractions were determined to possess respectively, 51.5 and 47.1% of the rutin VCEAC. The percent nitric oxide inhibitions of the fractions were respectively found to be 84.0, 56.4 and 51.9% of the rutin capacity for the methanol, acetone and...

Research paper thumbnail of Antioxidant Flavone C-Biosides From The Aerial Parts Of Alternanthera Pungens

Indian Journal of Pharmaceutical Sciences, 2005

From the 2-butanone fraction derived out of the aqueous alcoholic extract of the fresh aerial par... more From the 2-butanone fraction derived out of the aqueous alcoholic extract of the fresh aerial parts of Alternanthera pungens, three C-glycoflavones, vitexin (1), isovitexin (2) and orientin (3) and an yellow solid composed of their 2"-O-I²-D glucopyranosides (4-6) were isolated and characterised. Fully assigned sets of proton and carbon resonances, based on detailed 1D and 2D NMR measurements, including 1H COSY, HMQC and HMBC experiments, enabled the deduction of definitive evidence for the C- and the O-glycosidic linkages of the three biosides. Antioxidant potential of these six compounds was evaluated using two different assays, namely, the Trolox equivalent antioxidant capacity and the coupled oxidation of B-carotene and linoleic acid (autoxidation) assays. Compounds 3 and 6 were fairly active while the others were mildly active in both the assays.

Research paper thumbnail of Highly Oxygenated and Novel Phenolic Metabolites From Vernonia Membranacea Bedd

Oriental journal of chemistry, 2004

Research paper thumbnail of Ethnobotanical and pharmacological profile with propagation strategies of Mukia maderaspatana ( L.) M. Roem.–A concise overview

village hedges and other open habitats and in the disturbed sites of the semi-evergreen and decid... more village hedges and other open habitats and in the disturbed sites of the semi-evergreen and deciduous forests. It is distributed throughout the tropics and subtropics of the Old World, where different parts of the plant are being utilized for the health-care needs of human beings and livestock. The leaves and tender shoots are also frequently consumed as a part of the South Indian cuisine. Preclinical animal experiments have substantiated a number of traditional and folkloric medicinal claims, including hypotensive, hypolipidemic, hepatoprotective, hypoglycaemic, immunomodulatory, antimicrobial, antiplatelet-aggregation, antiulcer, anxiolytic and local anaesthetic characteristics of the plant extracts. Encouraging results have emerged from clinical investigations also as a chemoprotective plant in subjects suffering from hypertension, diabetes, dyslipidemia and rheumatoid arthritis. The present review aims to offer a concise pioneering account of (i) the ethnomedical uses of the lea...

Research paper thumbnail of Polyphenolic components of Waltheria indica

Research paper thumbnail of Antioxidant Capacity and Lipophilic Constitution of Alternanthera bettzickiana Flower Extract

Oriental Journal of Chemistry, 2014

Alternanthera Forsk 1,2 , belonging to the family Amaranthaceae and comprising of ca. 80 species ... more Alternanthera Forsk 1,2 , belonging to the family Amaranthaceae and comprising of ca. 80 species 3 , is a genus of evergreen, perennial herbs that are native to tropical and subtropical regions. The taxa occur abundantly in Australia and Tropical America and about nine of them are reported from South India 2. The leaves of A. sessilis (L.) and A. bettzickiana (Regel) Nicolson are reported to be

Research paper thumbnail of Note: Novel acylkaempferol glycoside from the endemic species, Vernonia travancorica Hook. f

Journal of Asian Natural Products Research, 2004

Vernonia travancorica Hook. f. is a taxon, endemic to the evergreen forests of Western Ghats (abo... more Vernonia travancorica Hook. f. is a taxon, endemic to the evergreen forests of Western Ghats (above 1000 m), India. From the aqueous EtOH extract of the air-dried corymbose inflorescence a novel secondary metabolite, 3-O-β-[β-(6‴-acetyl)-d-glucopyranosyl(1→2)]-d-glucopyranosyl kaempferol (1), has been isolated, together with three other compounds, viz., 4′-methoxykaempferol (2), its 3-O-β-d-glucopyranoside (3) and kaempferol (4). The structure of the new natural product has

Research paper thumbnail of Antioxidative constitution of Mukia maderaspatana (Linn.) M. Roem. leaves

Indian Journal of Natural …, 2011

Indigenous leafy vegetables of the traditional rural communities are potentially nutritious and c... more Indigenous leafy vegetables of the traditional rural communities are potentially nutritious and contain a vast array of beneficial phytochemicals that offer protection against several chronic and age-related human ailments. The present study was planned to assess the antioxidative constitution of the fresh leaves of Mukia maderaspatana (Linn.) M. Roem. (Family: Cucurbitaceae). The total phenolic, flavonoid, carotenoid and vitamin E contents were determined using specific spectrophotometric methods and the amount of ascorbic acid by titrimetry. The medicinal leafy vegetable was found to be a good dietary source of the low molecular weight antioxidants analysed. The leaf extract exhibited potent in vitro antioxidant/radical scavenging (ABTS •+ and FRAP assays) and metal (Ferrous ion) chelating activities and also inhibited βcarotene bleaching. Saponarin has been isolated and determined as the major phenolic antioxidant by HPLC. The amount of phenolics (292.392 ±1.087 mg GAE), flavonoid (247.079 ± 0.705 QE), carotenoids (0.812 ± 0.075 mg), vitamins C (17.046 ± 0.839 mg) and E (0.194 ± 0.068 mg) and saponarin (220.800 ± 0.944 mg) present and the antioxidant capacities (301.926 ± 0.869 mg vitamin C equivalent antioxidant capacity) are reported for 100 g of fresh leaves. The protective/therapeutic significance of these antioxidant components is also highlighted.

Research paper thumbnail of An Approach to the Chemosystematics of the Genus Cucumis L

Oriental Journal of Chemistry

Cucurbitaceae is a family of about 120 genera and over 900 species, widely distributed in tropica... more Cucurbitaceae is a family of about 120 genera and over 900 species, widely distributed in tropical and subtropical regions of Africa including Madagascar, South, Southeast and East Asia, Australia as well as Central and South America 1,2. The cucurbits are also among the most diverse plant families, cultivated and naturalised worldwide in a variety of environmental conditions. These include some of the earliest cultivated food plants in both the Old and the New World tropics and subtropics. Examples of some of the World's most important

Research paper thumbnail of Foliar Biophenolic Antioxidant Metabolites of Alternanthera bettzickiana

Oriental Journal of Chemistry, 2014

Alternanthera bettzickiana (Regel) Nicholson (Family: Amaranthaceae) is an erect herb and an orna... more Alternanthera bettzickiana (Regel) Nicholson (Family: Amaranthaceae) is an erect herb and an ornamental pot plant, claimed to be useful in purifying and nourishing blood, in addition to the acclaimed soft laxative, galactagogue, antipyretic and wound healing characteristics. The tender leaves and shoots are commonly consumed like vegetable or spinach and in soups, either cooked alone or mixed with other vegetables and served with a staple food like rice or ugali. From the hydrophilic extract of the fresh leaves that exhibited in vitro antioxidant/radical scavenging (ABTS •+ and FRAP assays) and metal (Ferrous ion) chelating capacities, six biophenolic antioxidants, viz., 7-O-b-D-glucopyranosyl-6-C-b-D-glucopyranosylapigenin, 6-C-b-D-glucopyranosylapigenin, 8-C-b-D-glucopyranosylapigenin, (E)-3-(4-hydroxyphenyl)prop-2-enoic acid, (E)-3-(3,4-dihydroxyphenyl) prop-2-enoic acid and (E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid, have been isolated and characterised for the first time adopting extensive chromatographic and spectral studies.

Research paper thumbnail of Ethnobotanical and pharmacological profile with propagation strategies of <i style="mso-bidi-font-style:normal">Mukia maderaspatana</i> (<span style="mso-ansi-language:EN-IN">L.) M. Roem.–A concise overview </span>

9-26<i style="mso-bidi-font-style: normal">Mukia maderaspatana (<span style=&q... more 9-26<i style="mso-bidi-font-style: normal">Mukia maderaspatana (<span style="letter-spacing: -.2pt;mso-ansi-language:EN-IN">L.) M. Roem. (Family-<span style="letter-spacing:-.2pt;mso-ansi-language: EN-IN">Cucurbitaceae) [syn. Melothria maderaspatana (L.) Cogn.] grows common in village hedges and other open habitats and in the disturbed sites of the semi-evergreen and deciduous forests. It is distributed throughout the tropics and subtropics of the Old World, where different parts of the plant are being utilized for the health-care needs of human beings and livestock. The leaves and tender shoots are also frequently consumed as a part of the South Indian cuisine. Preclinical animal experiments have substantiated a number of traditional and folkloric medicinal claims, including hypotensive, hypolipidemic, hepatoprotective, hypoglycaemic, immunomodulatory, antimicrobial, antiplatelet-aggregation, antiulcer, anxiolytic and local anaestheti...

Research paper thumbnail of Studies on the pharmacognostical and in vitro antioxidant potential of Cleome gynandra Linn. leaves

nopr.niscair.res.in

Cleome gynandra Linn. of Cleomaceae (Capparaceae) family is an annual herb, growing up to 0.6-1m ... more Cleome gynandra Linn. of Cleomaceae (Capparaceae) family is an annual herb, growing up to 0.6-1m in height and is popular in the Ayurveda, Siddha, Folk and Tibetian systems of medicine. The present paper deals with the pharmacognostical study, including the macroscopic, microscopic, fluorescence and phytochemical characteristics, which enables the identification of the leafy vegetable, as well as the determination of the antioxidant potential and the predominant classes of antioxidants that contribute to the activity.

Research paper thumbnail of Studies on the pharmacognostical and in vitro antioxidant potential of the leaves of Cleome gynandra Linn

... T Anbazhagi1, K Kadavul1*,G Suguna2 and AJA Petrus2 1Department of Plant Sciences, 2Departmen... more ... T Anbazhagi1, K Kadavul1*,G Suguna2 and AJA Petrus2 1Department of Plant Sciences, 2Department of Chemistry Kanchi Mamunivar Centre for Post-Graduate Studies, Puducherry-605 008, India *Correspondent author, E-mail: kadavul2004 ... d) Acetone Pale green Pink ...

Research paper thumbnail of Isolation and Characterisation of the Antioxidant Phenolic Metabolites of Boerhaavia erecta L. Leaves

Boerhaavia erecta L. (Nyctaginaceae) is a medicinal weed, indigenous to tropical America, but pre... more Boerhaavia erecta L. (Nyctaginaceae) is a medicinal weed, indigenous to tropical America, but presently pantropical and appear to constitute a functional leafy vegetable of certain communities. The taxon is reported to possess antiparasitic, antifungal, antibacterial, antiviral, antihistaminic, antioxidant and hepatoprotective properties. The residue of the ethanolic leaf-extract was fractionated into diethyl ether, acetone and methanol solubles. All the three fractions of the leaf extract scavenged reactive oxygen and nitrogen species effectively. The most polar methanol fraction was determined to possess Vitamin C equivalent antioxidant capacity (VCEAC) of 64.57±1.07%, which is about 78.4% of the dietary flavonol, rutin. The acetone and ether fractions were determined to possess respectively, 51.5 and 47.1% of the rutin VCEAC. The percent nitric oxide inhibitions of the fractions were respectively found to be 84.0, 56.4 and 51.9% of the rutin capacity for the methanol, acetone and...

Research paper thumbnail of Antioxidant Flavone C-Biosides From The Aerial Parts Of Alternanthera Pungens

Indian Journal of Pharmaceutical Sciences, 2005

From the 2-butanone fraction derived out of the aqueous alcoholic extract of the fresh aerial par... more From the 2-butanone fraction derived out of the aqueous alcoholic extract of the fresh aerial parts of Alternanthera pungens, three C-glycoflavones, vitexin (1), isovitexin (2) and orientin (3) and an yellow solid composed of their 2"-O-I²-D glucopyranosides (4-6) were isolated and characterised. Fully assigned sets of proton and carbon resonances, based on detailed 1D and 2D NMR measurements, including 1H COSY, HMQC and HMBC experiments, enabled the deduction of definitive evidence for the C- and the O-glycosidic linkages of the three biosides. Antioxidant potential of these six compounds was evaluated using two different assays, namely, the Trolox equivalent antioxidant capacity and the coupled oxidation of B-carotene and linoleic acid (autoxidation) assays. Compounds 3 and 6 were fairly active while the others were mildly active in both the assays.

Research paper thumbnail of Highly Oxygenated and Novel Phenolic Metabolites From Vernonia Membranacea Bedd

Oriental journal of chemistry, 2004

Research paper thumbnail of Ethnobotanical and pharmacological profile with propagation strategies of Mukia maderaspatana ( L.) M. Roem.–A concise overview

village hedges and other open habitats and in the disturbed sites of the semi-evergreen and decid... more village hedges and other open habitats and in the disturbed sites of the semi-evergreen and deciduous forests. It is distributed throughout the tropics and subtropics of the Old World, where different parts of the plant are being utilized for the health-care needs of human beings and livestock. The leaves and tender shoots are also frequently consumed as a part of the South Indian cuisine. Preclinical animal experiments have substantiated a number of traditional and folkloric medicinal claims, including hypotensive, hypolipidemic, hepatoprotective, hypoglycaemic, immunomodulatory, antimicrobial, antiplatelet-aggregation, antiulcer, anxiolytic and local anaesthetic characteristics of the plant extracts. Encouraging results have emerged from clinical investigations also as a chemoprotective plant in subjects suffering from hypertension, diabetes, dyslipidemia and rheumatoid arthritis. The present review aims to offer a concise pioneering account of (i) the ethnomedical uses of the lea...

Research paper thumbnail of Polyphenolic components of Waltheria indica

Research paper thumbnail of Antioxidant Capacity and Lipophilic Constitution of Alternanthera bettzickiana Flower Extract

Oriental Journal of Chemistry, 2014

Alternanthera Forsk 1,2 , belonging to the family Amaranthaceae and comprising of ca. 80 species ... more Alternanthera Forsk 1,2 , belonging to the family Amaranthaceae and comprising of ca. 80 species 3 , is a genus of evergreen, perennial herbs that are native to tropical and subtropical regions. The taxa occur abundantly in Australia and Tropical America and about nine of them are reported from South India 2. The leaves of A. sessilis (L.) and A. bettzickiana (Regel) Nicolson are reported to be

Research paper thumbnail of Note: Novel acylkaempferol glycoside from the endemic species, Vernonia travancorica Hook. f

Journal of Asian Natural Products Research, 2004

Vernonia travancorica Hook. f. is a taxon, endemic to the evergreen forests of Western Ghats (abo... more Vernonia travancorica Hook. f. is a taxon, endemic to the evergreen forests of Western Ghats (above 1000 m), India. From the aqueous EtOH extract of the air-dried corymbose inflorescence a novel secondary metabolite, 3-O-β-[β-(6‴-acetyl)-d-glucopyranosyl(1→2)]-d-glucopyranosyl kaempferol (1), has been isolated, together with three other compounds, viz., 4′-methoxykaempferol (2), its 3-O-β-d-glucopyranoside (3) and kaempferol (4). The structure of the new natural product has

Research paper thumbnail of Antioxidative constitution of Mukia maderaspatana (Linn.) M. Roem. leaves

Indian Journal of Natural …, 2011

Indigenous leafy vegetables of the traditional rural communities are potentially nutritious and c... more Indigenous leafy vegetables of the traditional rural communities are potentially nutritious and contain a vast array of beneficial phytochemicals that offer protection against several chronic and age-related human ailments. The present study was planned to assess the antioxidative constitution of the fresh leaves of Mukia maderaspatana (Linn.) M. Roem. (Family: Cucurbitaceae). The total phenolic, flavonoid, carotenoid and vitamin E contents were determined using specific spectrophotometric methods and the amount of ascorbic acid by titrimetry. The medicinal leafy vegetable was found to be a good dietary source of the low molecular weight antioxidants analysed. The leaf extract exhibited potent in vitro antioxidant/radical scavenging (ABTS •+ and FRAP assays) and metal (Ferrous ion) chelating activities and also inhibited βcarotene bleaching. Saponarin has been isolated and determined as the major phenolic antioxidant by HPLC. The amount of phenolics (292.392 ±1.087 mg GAE), flavonoid (247.079 ± 0.705 QE), carotenoids (0.812 ± 0.075 mg), vitamins C (17.046 ± 0.839 mg) and E (0.194 ± 0.068 mg) and saponarin (220.800 ± 0.944 mg) present and the antioxidant capacities (301.926 ± 0.869 mg vitamin C equivalent antioxidant capacity) are reported for 100 g of fresh leaves. The protective/therapeutic significance of these antioxidant components is also highlighted.

Research paper thumbnail of An Approach to the Chemosystematics of the Genus Cucumis L

Oriental Journal of Chemistry

Cucurbitaceae is a family of about 120 genera and over 900 species, widely distributed in tropica... more Cucurbitaceae is a family of about 120 genera and over 900 species, widely distributed in tropical and subtropical regions of Africa including Madagascar, South, Southeast and East Asia, Australia as well as Central and South America 1,2. The cucurbits are also among the most diverse plant families, cultivated and naturalised worldwide in a variety of environmental conditions. These include some of the earliest cultivated food plants in both the Old and the New World tropics and subtropics. Examples of some of the World's most important

Research paper thumbnail of Foliar Biophenolic Antioxidant Metabolites of Alternanthera bettzickiana

Oriental Journal of Chemistry, 2014

Alternanthera bettzickiana (Regel) Nicholson (Family: Amaranthaceae) is an erect herb and an orna... more Alternanthera bettzickiana (Regel) Nicholson (Family: Amaranthaceae) is an erect herb and an ornamental pot plant, claimed to be useful in purifying and nourishing blood, in addition to the acclaimed soft laxative, galactagogue, antipyretic and wound healing characteristics. The tender leaves and shoots are commonly consumed like vegetable or spinach and in soups, either cooked alone or mixed with other vegetables and served with a staple food like rice or ugali. From the hydrophilic extract of the fresh leaves that exhibited in vitro antioxidant/radical scavenging (ABTS •+ and FRAP assays) and metal (Ferrous ion) chelating capacities, six biophenolic antioxidants, viz., 7-O-b-D-glucopyranosyl-6-C-b-D-glucopyranosylapigenin, 6-C-b-D-glucopyranosylapigenin, 8-C-b-D-glucopyranosylapigenin, (E)-3-(4-hydroxyphenyl)prop-2-enoic acid, (E)-3-(3,4-dihydroxyphenyl) prop-2-enoic acid and (E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid, have been isolated and characterised for the first time adopting extensive chromatographic and spectral studies.