Quantitative analysis of triterpenes friedelan-3-?-ol and friedelin in Maytenus aquifolium by high-resolution gas chromatography and high- temperature capillary gas chromatography

Nossack, Ana C.; Vasconcelos, Eliane Carvalho de; Vilegas, Janete Harumi Yariwake; Lanças, Fernando Mauro; Roque, Nı́dia Franca

doi:10.1002/1099-1565(200007/08)11:4<243::aid-pca520>3.0.co;2-q

“…Phytchemical studies carried out in plants of the genus Maytenus revealed the triterpenes friedeline and friedelol can be considered chemosystematic markers of the genus (NOSSACK et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Microbiological evaluation of isolated compounds from the bark of Maytenus guianensis Klotzsch ex Reissek (Celastraceae)

Lima

¹

,

Hurtado

²

,

Meneguetti

³

et al. 2016

REGET

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0

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Maytenus guianensis Klotzsch ex Reissek is a brazilian Amazon plant widely used in tradicional medicine to treat malaria, leishmaniasis and cancer. Due to the increasing number of resistant strains of microorganisms to known antimicrobial substances, various extracts of medicinal plants are being assayed with the purpose of developing new compounds with antimicrobial activities. Thus, the present work aimed to evaluate the biological potential of isolated substances of the bark of M. guianensis on bacteria. The barks were collected at the Reserva Florestal Adolpho Ducke, in Manaus-AM. After, they were dried and grinded, being subjected to Soxhlet extraction with different solvants according to their polarity degree. The isolated substances were diluted with DMSO 2 %, and for the evaluation of the antibacterial potential, the agar well diffusion technique was used. The design was totally randomized with two replicas per treatment. The evaluation consisted on measuring bacteria colonial growth after 24 hours of the beginning of the experiment. The results obtained from the isolated substances of M. guianensis presented inhibitory effect against at least four out of the five bacteria tested, where satisfactory inhibition halos were noted. The results highlight the antimicrobial potential of this plant, which may be promising for the development of new drugs.

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“…The pharmacological potential of cork lies in its low molecular weight components, but to date, only its friedelin and friedelin derivatives have been studied. [157][158][159][160] Friedelin and related compounds extracted from other natural products have been studied 76,78,157,161,162 and reported to show antioxidant, antistaminic, antiulcer, 159 anti-inflammatory 86 or even anticancer effects. 80 Betulinic acid, a triterpene like friedelin has been studied 163 for prevention and treatment of cancer and HIV infection.…”

Section: Pharmacological Potentialmentioning

confidence: 99%

Cork: properties, capabilities and applications

Silva¹,

Sabino²,

Fernandes³

et al. 2005

International Materials Reviews

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Cork is a natural, renewable, sustainable raw material that has been used for many centuries. As a result of this very long term interest, the scientific literature on cork is extensive. The present review focuses on the chemical composition, physical and mechanical properties of cork and on its products and sub-products. The substantial efforts to fully characterise cork, as well as new developments and evolving research, are reviewed, beginning with its histology, growth and morphology (at macro-and microscales). The chemical structure is analysed in detail, covering both the materials that form the wall structure and the low molecular weight, extractable components. The unique properties of cork are discussed and correlated with current knowledge on morphology and chemical structure. Finally, the important industrial applications of cork are reviewed, in the context of research to provide cork with novel, high added-value applications.

show abstract

“…[157][158][159][160] Friedelin and related compounds extracted from other natural products have been studied 76,78,157,161,162 and reported to show antioxidant, antistaminic, antiulcer, 159 anti-inflammatory 86 or even anticancer effects. 80 Betulinic acid, a triterpene like friedelin has been studied 163 for prevention and treatment of cancer and HIV infection.…”

Section: Pharmacological Potentialmentioning

confidence: 99%

Cork: properties, capabilities and applications

Silva¹,

Sabino²,

Fernandes³

et al. 2008

International Materials Reviews

View full text Add to dashboard Cite

Cork is a natural, renewable, sustainable raw material that has been used for many centuries. As a result of this very long term interest, the scientific literature on cork is extensive. The present review focuses on the chemical composition, physical and mechanical properties of cork and on its products and sub-products. The substantial efforts to fully characterise cork, as well as new developments and evolving research, are reviewed, beginning with its histology, growth and morphology (at macro-and microscales). The chemical structure is analysed in detail, covering both the materials that form the wall structure and the low molecular weight, extractable components. The unique properties of cork are discussed and correlated with current knowledge on morphology and chemical structure. Finally, the important industrial applications of cork are reviewed, in the context of research to provide cork with novel, high added-value applications.

show abstract

Quantitative analysis of triterpenes friedelan-3-?-ol and friedelin in Maytenus aquifolium by high-resolution gas chromatography and high- temperature capillary gas chromatography

Cited by 9 publications

References 8 publications

Microbiological evaluation of isolated compounds from the bark of Maytenus guianensis Klotzsch ex Reissek (Celastraceae)

Microbiological evaluation of isolated compounds from the bark of Maytenus guianensis Klotzsch ex Reissek (Celastraceae)

Cork: properties, capabilities and applications

Cork: properties, capabilities and applications

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