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      Rendimento, composição química e atividades antimicrobiana e antioxidante do óleo essencial de folhas de Campomanesia adamantium submetidas a diferentes métodos de secagem Translated title: Content, chemical composition and antimicrobial and antioxidant activities of the essential oil from leaves of Campomanesia adamantium submitted to different drying methods.

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          Abstract

          RESUMO Campomanesia adamantium é muito utilizada na medicina popular no tratamento de hipertensão, reumatismo e diabetes. Objetivou-se com o presente trabalho avaliar o rendimento, a composição química, e as atividades antimicrobiana e antioxidante do óleo essencial de folhas de C. adamantium submetidas a diferentes métodos e tempos de secagem. O delineamento utilizado foi inteiramente casualizado, com oito tratamentos e três repetições. O óleo essencial foi extraído por hidrodestilação das folhas e analisado por CG-EM. O tipo de secagem das folhas de C. adamantium influenciou no teor e na composição química do óleo essencial. Os constituintes espatulenol, óxido cariofileno e germacreno-B apresentaram maior concentração na maioria das procedências avaliadas. O óleo essencial das folhas de C. adamantium apresentou moderada atividade antibacteriana em relação a todos os micro-organismos testados. A atividade antioxidante se deu empregando-se o método de redução do radical estável DPPH, sendo observada fraca atividade antioxidante por meio do ensaio utilizado.

          Translated abstract

          ABSTRACT C. adamantiumis widely used in popular medicine for thetreatment of hypertension, rheumatism and diabetes. This study looked to evaluate the essential oil yield, the chemical composition and the antimicrobial and antioxidant activities of the essential oil from leaves of C. adamantium. A completely randomized design was used with eight treatments and three replications. The essential oil obtained by hydrodestillation of the leaves was analyzed by GC-MS. The results show that the drying type and the processing of the leaf influence the content and chemical composition of the essential oil. The compounds spathulenol, caryophyllene oxide and germacrene-B have higher concentrationsin mostorigins. The essentialoil from theleaves of C.adamantiumshowed moderate bacterial activityagainst all tested microorganisms. The antioxidant activity was determined by the methods of reduction of the DPPH stable radical. The antioxidant activity was weak in the test used.

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          Screening of Brazilian plant extracts for antioxidant activity by the use of DPPH free radical method.

          Brazilian plant extracts belonging to 16 species of 5 different families (71 extracts) were tested against the stable DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) free-radical. The ability to scavenge DPPH radical was measured in these experiments by the discoloration of the solution. Ginkgo biloba and rutin, commonly used as antioxidants for medical purposes, were used as standards. Based on our results, we can say that as a general rule the ethanol extracts of plants belonging to the Verbenaceae family showed lower EC(50) values than the other plant extracts. Among the partitions, the more polar ones (ethyl acetate and n-butanol) are those that generally have higher antioxidant activity (AA). Copyright 2001 John Wiley & Sons, Ltd.
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            Identification of essential oil components by gas chromatography/quadrupole mass sprestroscopy

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              Óleos voláteis de espécies de Myrcia nativas do Rio Grande do Sul

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbpm
                Revista Brasileira de Plantas Medicinais
                Rev. bras. plantas med.
                Sociedade Brasileira de Plantas Medicinais
                1983-084X
                June 2016
                : 18
                : 2
                : 502-510
                Affiliations
                [1 ] Instituto Federal Goiano Brazil
                [2 ] Instituto Federal do Sul de Minas Gerais Brazil
                [3 ] Universidade de Franca Brazil
                Article
                S1516-05722016000200502
                10.1590/1983-084X/15_206
                8fcf5c10-f3d8-4ad8-b83a-c4a87c614464

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-0572&lng=en
                Categories
                PHARMACOLOGY & PHARMACY

                Pharmacology & Pharmaceutical medicine
                Campomanesia adamantium,Myrtaceae,drying,sesquiterpenes,antibacterial activity,DPPH,secagem,sesquiterpenos,atividade antibacteriana

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