Antimicrobial and antioxidant activity of essential oil and different plant extracts of Psidium cattleianum Sabine/Atividade antimicrobiana e antioxidante do oleo essencial e diferentes extratos vegetais de Psidium cattleianum Sabine

The goals of the study were to determine: the antimicrobial and antioxidant activities of essential oil and plant extracts aqueous and ethanolic of Psidium cattleianum Sabine; the chemical composition of the essential oil of P. cattleianum; and the phytochemical screening of aqueous and ethanolic ex...

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Bibliographic Details
Published in:Brazilian journal of biology 2016-02, Vol.76 (1), p.101-101
Main Authors: Scur, M.C, Pinto, F.G.S, Pandini, J.A, Costa, W.F, Leite, C.W, Temponi, L.G
Format: Article
Language:English
Subjects:
Antimicrobial agents
Antioxidants
Bacteria
Flavonoids
Gram-negative bacteria
Klebsiella pneumoniae
Microorganisms
Natural products
Oils & fats
Psidium cattleianum
Streptococcus pneumoniae
Studies
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Summary:The goals of the study were to determine: the antimicrobial and antioxidant activities of essential oil and plant extracts aqueous and ethanolic of Psidium cattleianum Sabine; the chemical composition of the essential oil of P. cattleianum; and the phytochemical screening of aqueous and ethanolic extracts of the same plant. Regarding the antimicrobial activity, the ethanolic extract exhibited moderate antimicrobial activity with respect to bacteria K. pneumoniae and S. epidermidis, whereas, regarding other microorganisms, it showed activity considered weak. The aqueous extract and the essential oil showed activity considered weak, although they inhibited the growth of microorganisms. About the antioxidant potential, the ethanolic and aqueous extracts exhibited a scavenging index exceeding 90%, while the essential oil didn't show significant antioxidant activity. Regarding the phytochemical composition, the largest class of volatile compounds identified in the essential oil of P. cattleianum included the following terpenic hydrocarbons: a-copaene (22%); eucalyptol (15%), 8-cadinene (9.63%) and a-selinene (6.5%). The phytochemical screening of extracts showed the presence of tannins, flavonoids, and triterpenoids for aqueous and ethanolic extracts. The extracts and essential oils inhibit the growth of microrganisms and plant extracts showed significant antioxidant activity. Also, the phytochemical characterization of the essential oil showed the presence of compounds interest commercial, as well as extracts showed the presence of important classes and compounds with biological activities.
ISSN:1519-6984
1678-4375
DOI:10.1590/1519-6984.13714