Avaliação do teor de Cumarina e atividade antifúngica de frações de Óleo de Cumaru

Sousa, Bruna Cristine Martins de; Barata, Lauro Euclides Soares; Macêdo, Caroline Gomes; Fraga, Sidney Santos; Kasper, Aline Aparecida München; Lourido, Katiane Araújo; Paulino, Geomarcos da Silva; Almeida, Everton Cristo de; Sartoratto, Adilson; Lustosa, Denise Castro

doi:10.6008/cbpc2179-6858.2018.006.0008

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…to 96%, obtaining the highest yield and the isolation of 3.4% of coumarin in the hexanic fraction. However, in the dichloromethane and ethanolic fractions, in addition to simple coumarin, hydrocoumarin (3,4-dihydro-2H-1-benzopyran-2-one or 3,4-dihydrocoumarin) was identified [82]. This substance, belonging to the class of coumarins, has also been reported in the extract of D. punctata seeds [10] and this study found it in the extracts of branches, residues, and seeds.…”

Section: Discussionmentioning

confidence: 50%

Phytochemical Analysis and Antioxidant Activity of Ethanolic Extracts from Different Parts of Dipteryx punctata (S. F. Blake) Amshoff

Sousa,

Gomes,

Viana

et al. 2023

Applied Sciences

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The genus Dipteryx, to which the cumaru tree belongs, contains neotropical species native to Central and South American countries. They are used both in the sale of timber and seeds and for the extraction of the active compound coumarin, used as a flavoring agent. This study evaluated the phytochemical profile and antioxidant activity of extracts of leaves, branches, and fruits (residues and seeds) of the species Dipteryx punctata. The plant material for analysis was collected in five seed-producing areas, in Mojuí dos Campos, Pará, Brazil. The extracts were obtained via Soxhlet extractor using 92.8% distilled ethanol as the solvent and operated till exhaustion (8 h). Chromatographic analyses were performed by thin-layer chromatography (TLC) and gas chromatography coupled to mass spectrometry (GC-MS), followed by phytochemical determination of phenolics and flavonoids and analysis of antioxidant activity (TLC and free radical scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH). The highest extract yields were obtained from D. punctata fruit residues and seeds from all areas, with maximum values of 26.1% and 47.2%, respectively, in Boa Fé (area 3). In the evaluation by TLC, the extracts of leaves, branches, and residues presented the classes of terpenes, condensed and hydrolysable tannins, and flavonoids; coumarin (1,2-benzopyrone) was identified only in residue and seed extracts. The major constituents highlighted in the collection areas were: lupeol in leaves (34.4% in area 5), 4-O-methylmannose in branches and residues (85.5% in area 2 and 90.6% in area 5, respectively), and coumarin in seeds (99.3% in area 3). The best results for the antioxidant action were obtained for extracts from leaves and residues, requiring a concentration of 117.6 µg.mL−1 of the extract from the leaves and 160.4 µg.mL−1 of the extract from the residues to reduce the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical by 50%. This phytochemical study contributes to reducing the scarcity of information on D. punctata. The chemical classes and compounds identified corroborate the antioxidant activity and add value to the species, and the data obtained reinforce the importance of reusing fruit residues, which are chemically rich but discarded in the environment.

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Section: Discussionmentioning

confidence: 50%

Phytochemical Analysis and Antioxidant Activity of Ethanolic Extracts from Different Parts of Dipteryx punctata (S. F. Blake) Amshoff

Sousa,

Gomes,

Viana

et al. 2023

Applied Sciences

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“…Willd., popularly known as cumaru, is a large tree with a wide distribution across the Amazon [26]. The wood has a very high density and the seeds are rich in coumarin [27], which is widely used in the production of pharmaceutical products, cosmetics, herbicides, fungicides, and drinks, among other applications, which justifies the high demand for this species in national and international markets [28].…”

Section: Introductionmentioning

confidence: 99%

Infrared Thermal Profiles in Silvopastoral and Full-Sun Pastures in the Eastern Amazon, Brazil

Cândido,

Guerreiro Martorano,

Cândido

et al. 2023

Forests

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There is a great need to identify interactions among silvopastoral systems and microclimatic indicators that describe the effect of trees compared to conventional pasture systems without trees. The objective of this study was to evaluate thermal conditions in a silvopastoral system and a pasture area exposed to full sunlight in the eastern Amazon, Brazil. The silvopastoral system was composed of the forest tree species Bertholletia excelsa H.B.K., Dipteryx odorata (Aubl.) Willd, and Khaya grandifoliola C.DC.. During the monitoring period, a forest inventory was carried out that included 30 trees from each species for which thermal profiles were created using a high-precision thermographic camera. Near-infrared thermography showed a positive and direct correlation with dendrometric variables. Silvopastoral systems with K. grandifoliola reduced the heat profile the most compared to conditions in a pasture fully exposed to sunlight, which demonstrates the ecosystem service provided by trees for thermal regulation in these systems. The microclimatic conditions explain the greater presence of bovines in the silvopastoral system as they were most likely in search of the thermal comfort provided by the trees during the period of the highest daytime temperatures. The silvopastoral system benefits the caloric balance and thermal comfort of pasture animals.

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Bioactivity of Ethanolic Extracts of Dipteryx punctata on Colletotrichum musae

et al. 2022

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Bioactivity with antifungal properties has already been reported for some species of the genus Dipteryx. However, little is known about Dipteryx punctata. We evaluated the antifungal activity, in vitro and in vivo, of extracts of leaves, branches and fruits of D. punctata on Colletotrichum musae, the causal agent of anthracnose in bananas. The extracts and the coumarin standard were tested in vitro, at concentrations of 10%, 20%, 30%, 40%, and 50% (w/v), added in potato-dextrose-agar (PDA) medium. The experimental design was completely randomized, factorial design, with four replications. The average diameter of the fungal colonies was evaluated daily for eight days, and at the end, the percentage of inhibition and growth rates were calculated. For in vivo tests, the products were tested at concentrations of 40% and 50%, in preventive and curative applications. In these tests, three medium disks (5 mm) containing phytopathogen structures were deposited at opposite points of the fruits, and remained in a humid chamber for 48 h. Anthracnose lesions were measured at an interval of two days, up to eight days after fungus inoculation. In the in vitro essay, the extracts of the branches and residues of the fruits of D. punctata and the coumarin pattern caused the biggest reductions in the average diameter of the colonies of the phytopathogen. D. punctata and coumarin extracts were promising in terms of in vivo antifungal activity, especially in preventive applications, being an important source of investigation for the formulation of natural products as sustainable phytosanitary measures.

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Avaliação do teor de Cumarina e atividade antifúngica de frações de Óleo de Cumaru

Cited by 3 publications

References 7 publications

Phytochemical Analysis and Antioxidant Activity of Ethanolic Extracts from Different Parts of Dipteryx punctata (S. F. Blake) Amshoff

Phytochemical Analysis and Antioxidant Activity of Ethanolic Extracts from Different Parts of Dipteryx punctata (S. F. Blake) Amshoff

Infrared Thermal Profiles in Silvopastoral and Full-Sun Pastures in the Eastern Amazon, Brazil

Bioactivity of Ethanolic Extracts of Dipteryx punctata on Colletotrichum musae

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