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Phytochemistry
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7991-2009
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2009 v.70 no.11-12
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- Author:
- Kumar, Manmeet; Rawat, Preeti; Rahuja, Neha; Srivastava, Arvind Kumar; Maurya, Rakesh
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1448-1455
- ISSN:
- 0031-9422
- Subject:
- Laurales; esters; catechol; glycosides; lignans; acetylation; medicinal properties; glycemic effect; chemical structure; spectral analysis; acid hydrolysis; glucose tolerance; diabetes mellitus
- Abstract:
- ... Bioactivity-guided separation of an antihyperglycemic extract from the leaves of Dodecadenia grandiflora afforded two phenylpropanoyl esters of catechol glycosides (1 and 4) and two lignane bis(catecol glycoside)esters (2 and 3). Their structures were established on the basis of extensive spectroscopic analysis (1D and 2D-NMR, MS). Compounds 2 and 3 are believed to be derived from dimerization via ...
- DOI:
- 10.1016/j.phytochem.2009.07.029
- PubMed:
- 19700178
- https://doi.org/10.1016/j.phytochem.2009.07.029
- Author:
- Torres-Castillo, J.A.; Mondragon Jacobo, C.; Blanco-Labra, A.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1374-1381
- ISSN:
- 0031-9422
- Subject:
- insect pests; trypsin inhibitors; Opuntia ficus-indica; isoelectric point; pest control; Periplaneta americana; spectral analysis; Acheta; Gryllus; enzyme activity; Prostephanus truncatus; plant proteins
- Abstract:
- ... A trypsin inhibitor from Opuntia streptacantha Lemaire (Prickly pear) seeds was purified and characterized. Of several proteases tested, this inhibitor showed specificity to trypsin-like enzymes. The major inhibitor present in these seeds showed distinctive characteristics, most notably a low molecular weight of 4.19 kDa, as determined by MALDI TOF, and an unusually high thermal stability, retaini ...
- DOI:
- 10.1016/j.phytochem.2009.08.009
- PubMed:
- 19765785
- https://doi.org/10.1016/j.phytochem.2009.08.009
- Author:
- He, Fei; Xiao, Wei-Lie; Pu, Jian-Xin; Wu, Ying-Li; Zhang, Hai-Bo; Li, Xiao-Nian; Zhao, Yong; Yang, Li-Bin; Chen, Guo-Qiang; Sun, Han-Dong
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1462-1466
- ISSN:
- 0031-9422
- Subject:
- humans; phytochemicals; cytotoxicity; medicinal plants; diterpenoids; Isodon (Lamiaceae); spectral analysis; cell proliferation; chemical structure; stereochemistry; anticarcinogenic activity; China
- Abstract:
- ... Five (1-5) ent-kaurane diterpenoids and 17 other known ones, were isolated from the leaves and stems of Isodon sinuolata. Their structures were determined on the basis of spectroscopic methods including 1D and 2D NMR spectroscopic analysis. All compounds were evaluated for cytotoxicity against a small panel of cell lines. Some compounds exhibited significant cytotoxicity. ...
- DOI:
- 10.1016/j.phytochem.2009.07.037
- PubMed:
- 19712947
- https://doi.org/10.1016/j.phytochem.2009.07.037
- Author:
- Yu, Hyun Young; Kittur, Farooqahmed S.; Bevan, David R.; Esen, Asim
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1355-1365
- ISSN:
- 0031-9422
- Subject:
- Zea mays; corn; beta-glucosidase; isozymes; molecular cloning; gene expression regulation; lectins
- Abstract:
- ... β-Glucosidases (Glu1 and Glu2) in maize specifically interact with a lectin called β-glucosidase aggregating factor (BGAF). We have shown that the N-terminal (Glu50-Val145) and the C-terminal (Phe466-Ala512) regions of maize Glu1 are involved in binding to BGAF. Sequence comparison between sorghum β-glucosidases (dhurrinases, which do not bind to BGAF) and maize β-glucosidases, and the 3D-structur ...
- DOI:
- 10.1016/j.phytochem.2009.07.026
- https://doi.org/10.1016/j.phytochem.2009.07.026
- Author:
- Williams, David J.; Critchley, Christa; Pun, Sharon; Chaliha, Mridusmita; O'Hare, Timothy J.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1401-1409
- ISSN:
- 0031-9422
- Subject:
- Lepidium sativum; Nasturtium officinale; seeds; nitriles; glucosinolates; thioglucosidase; enzymatic hydrolysis; biochemical pathways; thermal degradation; isothiocyanates; chelating agents; EDTA (chelating agent); deferoxamine
- Abstract:
- ... Glucosinolates are sulphur-containing glycosides found in brassicaceous plants that can be hydrolysed enzymatically by plant myrosinase or non-enzymatically to form primarily isothiocyanates and/or simple nitriles. From a human health perspective, isothiocyanates are quite important because they are major inducers of carcinogen-detoxifying enzymes. Two of the most potent inducers are benzyl isothi ...
- DOI:
- 10.1016/j.phytochem.2009.07.035
- PubMed:
- 19747700
- https://doi.org/10.1016/j.phytochem.2009.07.035
- Author:
- Choudhary, M. Iqbal; Naheed, Nadra; Abbaskhan, Ahmed; Ali, Sajjad; Atta-ur-Rahman
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1467-1473
- ISSN:
- 0031-9422
- Subject:
- Spiraea; medicinal plants; Oriental traditional medicine; phytochemicals; terpenoids; glucosides; chemical structure; spectral analysis; medicinal properties; antioxidant activity
- Abstract:
- ... Five glycosides, 2-(trans-cinnamoyloxy-methyl)-1-butene-4-O-β-d-glucopyranoside (1), 4-(6'-O-trans-cinnamoyl)-(2-hydroxymethyl-4-hydroxy-butenyl-β-d-glucopyranoside (2), 6''-O-trans-p-coumaroyl-(4-hydroxybenzoyl)-β-d-glucopyranoside (3), 6'-O-(4-methoxy-trans-cinnamoyl) α/β-d-glucopyranose (4) 6'-O-(4''-methoxy-trans-cinnamoyl)-kaempferol-3-β-d-glucopyranoside (7) along with six known compounds, ( ...
- DOI:
- 10.1016/j.phytochem.2009.07.013
- PubMed:
- 19747701
- https://doi.org/10.1016/j.phytochem.2009.07.013
- Author:
- Andersson, Derek; Chakrabarty, Romit; Bejai, Sarosh; Zhang, Jiaming; Rask, Lars; Meijer, Johan
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1345-1354
- ISSN:
- 0031-9422
- Subject:
- Arabidopsis thaliana; gene overexpression; recombinant fusion proteins; amino acid sequences; molecular cloning; thioglucosidase; enzyme kinetics; enzyme activity; isozymes
- Abstract:
- ... Myrosinases (EC 3.2.1.147) are β-thioglucoside glucosidases present in Brassicaceae plants. These enzymes serve to protect plants against pathogens and insect pests by initiating breakdown of the secondary metabolites glucosinolates into toxic products. Several forms of myrosinases are present in plants but the properties and role of different isoenzymes are not well understood. The dicot plant mo ...
- DOI:
- 10.1016/j.phytochem.2009.07.036
- PubMed:
- 19703694
- https://doi.org/10.1016/j.phytochem.2009.07.036
- Author:
- Mbaze, Luc Meva'a; Lado, Jean Alexandre; Wansi, Jean Duplex; Shiao, Tze Chieh; Chiozem, David Dako; Mesaik, Muhammad Ahmed; Choudhary, Muhammad Iqbal; Lacaille-Dubois, Marie-Aleth; Wandji, Jean; Roy, Rene; Sewald, Norbert
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1442-1447
- ISSN:
- 0031-9422
- Subject:
- Zanthoxylum; bark; amides; lignans; phytochemicals; chemical structure; spectral analysis; antioxidant activity; cytotoxicity; anticarcinogenic activity
- Abstract:
- ... Two amides, heitziamide A and heitziamide B and two phenylethanoids, heitziethanoid A and heitziethanoid B together with thirteen known compounds were isolated from F. heitzii (Letouzey). The structures of all compounds were established by spectroscopic analysis. Nine compounds were evaluated for oxidative burst inhibitory activity in a chemoluminescence assay and for cytotoxicity against PC-3 pro ...
- DOI:
- 10.1016/j.phytochem.2009.08.007
- PubMed:
- 19747699
- https://doi.org/10.1016/j.phytochem.2009.08.007
- Author:
- Fellenberg, Christin; Bottcher, Christoph; Vogt, Thomas
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1392-1400
- ISSN:
- 0031-9422
- Subject:
- Arabidopsis thaliana; messenger RNA; buds; phenylpropanoids; spermine; flowers; transcription (genetics); gene expression regulation; acyltransferases
- Abstract:
- ... Phenylpropanoid polyamine conjugates have been identified in flowers of many plant species. Their presence in Arabidopsis thaliana has only been recently established in flower buds and pollen grains. Annotation and location of a cation-dependent O-methyltransferase AtTSM1 specifically to the tapetum of young flower buds enabled the subsequent identification of several genes with a putative role in ...
- DOI:
- .1016/j.phytochem.2009.08.010
- https://doi.org/.1016/j.phytochem.2009.08.010
- Author:
- Hegazy, Mohamed-Elamir F.; Abd El-Razek, Mohamed H.; Nagashima, Fumihiro; Asakawa, Yoshinori; Pare, Paul W.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1474-1477
- ISSN:
- 0031-9422
- Subject:
- Tephrosia purpurea; medicinal plants; chemical constituents of plants; flavonoids; chemical structure; spectral analysis; stereochemistry; Egypt
- Abstract:
- ... Chemical investigations of aerial parts of Tephrosia purpurea yielded the rare prenylated flavonoids, tephropurpulin A (1) and isoglabratephrin (2), in addition to a previously identified flavonoid, glabratephrin (3). Structures were established by 1D and 2D NMR spectroscopy, as well as by HR-MS analysis; for compounds 2 and 3, structures were confirmed by X-ray analysis. ...
- DOI:
- 10.1016/j.phytochem.2009.08.001
- PubMed:
- 19733371
- https://doi.org/10.1016/j.phytochem.2009.08.001
- Author:
- Jabalpurwala, Fatima A.; Smoot, John M.; Rouseff, Russell L.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1428-1434
- ISSN:
- 0031-9422
- Subject:
- flowering; limes; volatile organic compounds; nitrogen compounds; Citrus maxima; spectral analysis; Citrus limon; pollinating insects; lemons; Citrus reticulata; mandarins; Citrus paradisi; grapefruits; Citrus aurantium; Citrus aurantiifolia; principal component analysis; plant-insect relations; insect pollination; Citrus hystrix; chemical composition; monoterpenoids; oranges; Citrus sinensis; pummelos
- Abstract:
- ... The objective of this study was to identify the major volatiles and their relative concentrations in intact grapefruit, sweet orange, sour orange, mandarin, lemon, lime and pummelo blossoms. Volatiles from freshly picked blossoms were collected and concentrated using static headspace solid-phase microextraction and then separated and identified using GC-MS. Seventy volatiles were detected, 66 iden ...
- DOI:
- 10.1016/j.phytochem.2009.07.031
- PubMed:
- 19747702
- https://doi.org/10.1016/j.phytochem.2009.07.031
- Author:
- Suzuki, Minoru; Takahashi, Yoshinori; Nakano, Satoru; Abe, Tsuyoshi; Masuda, Michio; Ohnishi, Toshiyuki; Noya, Yoichi; Seki, Koh-ichi
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1410-1415
- ISSN:
- 0031-9422
- Subject:
- algae; halogenated hydrocarbons; Laurencia; bromination
- Abstract:
- ... The production of labeled brominated metabolites with radioactive 82Br in Laurencia species was investigated as part of a study of the biosynthesis of halogenated metabolites from species belonging to the red algal genus Laurencia (Rhodomelaceae, Ceramiales). Radiobromide [82Br], thin-layer chromatography (TLC), and TLC-autoradioluminography (ARLG) were used. When cultured in artificial seawater m ...
- DOI:
- 10.1016/j.phytochem.2009.07.038
- PubMed:
- 19733868
- https://doi.org/10.1016/j.phytochem.2009.07.038
- Author:
- Li, Huifeng; Guo, Hongzhu; Tian, Yin; Zhang, Jie; Zhou, Jianping; Hu, Yuchi; Guo, Dean
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1416-1420
- ISSN:
- 0031-9422
- Subject:
- Mucor; triterpenoids; phytochemicals; biotransformation; cytotoxicity; anticarcinogenic activity; humans
- Abstract:
- ... Biotransformation of 20(S)-protopanaxadiol (1) by the fungus Mucor spinosus AS 3.3450 yielded eight metabolites (2-9). On the basis of NMR and MS analyses, the metabolites were identified as 12-oxo-15α,27-dihydroxyl-20(S)-protopanaxadiol (2), 12-oxo-7β,11α,28-trihydroxyl-20(S)-protopanaxadiol (3), 12-oxo-7β,28-dihydroxyl-20(S)-protopanaxadiol (4), 12-oxo-15α,29-dihydroxyl-20(S)-protopanaxadiol (5) ...
- DOI:
- 10.1016/j.phytochem.2009.07.041
- PubMed:
- 19732918
- https://doi.org/10.1016/j.phytochem.2009.07.041
- Author:
- Owens, Daniel K.; McIntosh, Cecilia A.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1382-1391
- ISSN:
- 0031-9422
- Subject:
- Citrus paradisi; grapefruits; glycosyltransferases; molecular cloning; gene expression regulation; recombinant fusion proteins; glycosylation; structure-activity relationships; enzyme activity; substrate specificity; buffers; enzyme kinetics; enzyme inhibitors; thermal stability; amino acid sequences
- Abstract:
- ... Glucosylation is a predominant flavonoid modification reaction affecting the solubility, stability, and subsequent bioavailability of these metabolites. Flavonoid glycosides affect taste characteristics in citrus making the associated glucosyltransferases particularly interesting targets for biotechnology applications in these species. In this work, a Citrus paradisi glucosyltransferase gene was i ...
- DOI:
- 10.1016/j.phytochem.2009.07.027
- PubMed:
- 19733370
- https://doi.org/10.1016/j.phytochem.2009.07.027
- Author:
- Tranquet, Olivier; Saulnier, Luc; Utille, Jean-Pierre; Ralph, John; Guillon, Fabienne
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1366-1373
- ISSN:
- 0031-9422
- Subject:
- antibody formation; cell walls; tissue distribution; wheat; lignification; monoclonal antibodies; aleurone layer; p-coumaric acid; esterification; esters; Triticum aestivum; oligosaccharides; ferulic acid
- Abstract:
- ... p-Coumaric acid is one of the predominant phenolic acids acylating the cell walls of grasses; p-coumarates are mainly esterified by lignins and arabinoxylans. Here we describe the production and characterisation of two monoclonal antibodies against p-coumarates. The 5-O-pCou-Ara(1 leads to 4)Xyl was chemically synthesized and conjugated to a carrier protein. Two interesting antibodies were obtaine ...
- DOI:
- 10.1016/j.phytochem.2009.06.019
- PubMed:
- 19712948
- https://doi.org/10.1016/j.phytochem.2009.06.019
16. Mycorrhization alleviates benzo[a]pyrene-induced oxidative stress in an in vitro chicory root model
- Author:
- Debiane, Djourher; Garcon, Guillaume; Verdin, Anthony; Fontaine, Joel; Durand, Roger; Shirali, Pirouz; Grandmougin-Ferjani, Anne; Sahraoui, Anissa Lounes-Hadj
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1421-1427
- ISSN:
- 0031-9422
- Subject:
- pyrene (hydrocarbon); chicory; vesicular arbuscular mycorrhizae; root systems; mycorrhizal fungi; oxidative stress; lipid peroxidation; superoxide dismutase; pollutants; root growth; Rhizophagus intraradices; enzyme activity; antioxidant activity; Cichorium intybus
- Abstract:
- ... Among chemicals that are widely spread both in terrestrial and aquatic ecosystems, benzo[a]pyrene is a major source of concern. However, little is known about its adverse effects on plants, as well as about the role of mycorrhization in protection of plant grown in benzo[a]pyrene-polluted conditions. Hence, to contribute to a better understanding of the adverse effects of polycyclic aromatic hydro ...
- DOI:
- 10.1016/j.phytochem.2009.07.002
- PubMed:
- 19758666
- https://doi.org/10.1016/j.phytochem.2009.07.002
- Author:
- Sweetman, Crystal; Deluc, Laurent G.; Cramer, Grant R.; Ford, Christopher M.; Soole, Kathleen L.
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1329-1344
- ISSN:
- 0031-9422
- Subject:
- genetic transformation; malic enzyme; grapes; malate dehydrogenase; phosphoenolpyruvate carboxylase; glyoxylate cycle; alcoholic fermentation; physiological transport; gluconeogenesis; cell respiration; malic acid; glycolysis; photosynthesis; lactic fermentation; fruiting; tricarboxylic acid cycle
- Abstract:
- ... Organic acids are present in all plants, supporting numerous and varied facets of cellular metabolism. The type of organic acid found, and the levels to which they accumulate are extremely variable between species, developmental stages and tissue types. Acidity plays important roles in the organoleptic properties of plant tissues, where examples of both enhanced and reduced palatability can be asc ...
- DOI:
- 10.1016/j.phytochem.2009.08.006
- PubMed:
- 19762054
- https://doi.org/10.1016/j.phytochem.2009.08.006
- Author:
- Henchiri, Hichem; Bodo, Bernard; Deville, Alexandre; Dubost, Lionel; Zourgui, Lazhar; Raies, Aly; Grellier, Philippe; Mambu, Lengo
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1435-1441
- ISSN:
- 0031-9422
- Subject:
- Teucrium; medicinal plants; phytochemicals; sesquiterpenoids; Plasmodium falciparum; humans; cultured cells; cytotoxicity; anticarcinogenic activity; chemical structure; spectral analysis
- Abstract:
- ... An antiplasmodial bioguided investigation of the EtOAc extract of the aerial parts of Teucrium ramosissimum led to isolation and identification of three sesquiterpenoids, teucmosin, 4α-hydroxy-homalomenol C, 1β,4β,7α-trihydroxy-8,9-eudesmene and two trinorsesquiterpenoids, 4β-hydroxy-11,12,13-trinor-5-eudesmen-1,7-dione and 1β,4β-dihydroxy-11,12,13-trinor-8,9-eudesmen-7-one together with five know ...
- DOI:
- 10.1016/j.phytochem.2009.08.012
- PubMed:
- 19766274
- https://doi.org/10.1016/j.phytochem.2009.08.012
- Author:
- Tanaka, Naonobu; Kim, Sang-Yong; Sekiya, Michiko; Ikeshiro, Yasumasa; Takaishi, Yoshihisa
- Source:
- Phytochemistry 2009 v.70 no.11-12 pp. 1456-1461
- ISSN:
- 0031-9422
- Subject:
- Hypericum; Clusiaceae; xanthones; chemical structure; spectral analysis; stereochemistry; cytotoxicity; anticarcinogenic activity; cultured cells; humans
- Abstract:
- ... A xanthonolignoid, 2-O-demethylkielcorin, and a phenylxanthone, chinexanthone A, were isolated from stems of Hypericum chinense together with four known xanthonolignoids and seven known xanthones. Their structures were established by spectroscopic analysis, as their optical properties and absolute stereochemistry determined. The cytotoxicities of the isolated xanthone derivatives as well as additi ...
- DOI:
- 10.1016/j.phytochem.2009.08.015
- PubMed:
- 19766276
- https://doi.org/10.1016/j.phytochem.2009.08.015