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Keywords = Panamanian plant extracts

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15 pages, 676 KiB  
Article
Screening of Panamanian Plant Extracts for Pesticidal Properties and HPLC-Based Identification of Active Compounds
by Niels GULDBRANDSEN, Maria DE MIERI, Mahabir GUPTA, Tobias SEISER, Christine WIEBE, Joachim DICKHAUT, Rüdiger REINGRUBER, Oliver SORGENFREI and Matthias HAMBURGER
Sci. Pharm. 2015, 83(2), 353-367; https://doi.org/10.3797/scipharm.1410-10 - 11 Dec 2014
Cited by 13 | Viewed by 2357
Abstract
A library of 600 taxonomically diverse Panamanian plant extracts was screened for fungicidal, insecticidal, and herbicidal activities. A total of 19 active extracts were submitted to HPLC-based activity profiling, and extracts of Bocconia frutescens, Miconia affinis, Myrcia splendens, Combretum aff. [...] Read more.
A library of 600 taxonomically diverse Panamanian plant extracts was screened for fungicidal, insecticidal, and herbicidal activities. A total of 19 active extracts were submitted to HPLC-based activity profiling, and extracts of Bocconia frutescens, Miconia affinis, Myrcia splendens, Combretum aff. laxum, and Erythroxylum macrophyllum were selected for the isolation of compounds. Chelerythrine (2), macarpine (3), dihydrosanguinarine (5), and arjunolic acid (8) showed moderate-to-good fungicidal activity. Myricetin-3-O-(6''-O-galloyl)-β-galactopyranoside (13) showed moderate insecticidal activity, but no compound with herbicidal activity was identified. Full article
14 pages, 423 KiB  
Article
Screening of Panamanian Plants for Cosmetic Properties, and HPLC-Based Identification of Constituents with Antioxidant and UV-B Protecting Activities
by Niels GULDBRANDSEN, Maria DE MIERI, Mahabir GUPTA, Eleni LIAKOU, Harris PRATSINIS, Dimitris KLETSAS, Eliza CHAITA, Nektarios ALIGIANNIS, Alexios-Leandros SKALTSOUNIS and Matthias HAMBURGER
Sci. Pharm. 2015, 83(1), 177-190; https://doi.org/10.3797/scipharm.1409-12 - 15 Oct 2014
Cited by 9 | Viewed by 2163
Abstract
A library of 600 taxonomically diverse Panamanian plant extracts was screened for DPPH scavenging and UV-B protective activities, and the methanolic extracts of Mosquitoxylum jamaicense, Combretum cacoucia, and Casearia commersionia were submitted to HPLC-based activity profiling. The compounds located in the [...] Read more.
A library of 600 taxonomically diverse Panamanian plant extracts was screened for DPPH scavenging and UV-B protective activities, and the methanolic extracts of Mosquitoxylum jamaicense, Combretum cacoucia, and Casearia commersionia were submitted to HPLC-based activity profiling. The compounds located in the active time windows were isolated and identified as gallic acid derivatives and flavonoids. Gallic acid methyl ester (3) and digallic acid derivatives (2, 6) showed the highest DPPH scavenging activity (<10 μg/mL), while protocatechuic acid (7) and isoquercitrin (10) exhibited the highest UV-B protective properties. Full article
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