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      Constituents and antioxidant activity of two varieties of coconut water (Cocos nucifera L.) Translated title: Constituintes químicos e atividade antioxidante de duas variedades de água de coco (Cocos nucifera L.)

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          Abstract

          An analysis of the constituents of coconut (Cocos nucifera L.) water from two fruit varieties (green and yellow) by hydrodistillation and solvent extraction showed the presence of alcohols, ketones, thiols, carboxylic acids, phenols, and esters. Substantial antioxidant activity was observed, using the DPPH assay, for the samples obtained by hydrodistillation and petroleum ether extraction of both coconut varieties.

          Translated abstract

          Uma análise dos componentes da água-de-coco (Cocos nucifera L.) de duas variedades da fruta (verde e amarelo) por hidrodestilação e extração com solvente, mostrou a presença de álcoois, cetonas, tióis, ácidos carboxílicos, fenóis, e ésteres. Significativa atividade antioxidante foi observada, usando o método DPPH, para as amostras obtidas por hidrodestilação e extração de éter de petróleo para ambas as variedades do coco.

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          Antioxidant activity of Nigella sativa essential oil.

          The essential oil of black cumin seeds, Nigella sativa L., was tested for a possible antioxidant activity. A rapid evaluation for antioxidants, using two TLC screening methods, showed that thymoquinone and the components carvacrol, t-anethole and 4-terpineol demonstrated respectable radical scavenging property. These four constituents and the essential oil possessed variable antioxidant activity when tested in the diphenylpicrylhydracyl assay for non-specific hydrogen atom or electron donating activity. They were also effective.OH radical scavenging agents in the assay for non-enzymatic lipid peroxidation in liposomes and the deoxyribose degradation assay. GC-MS analysis of the essential oil obtained from six different samples of Nigella sativa seeds and from a commercial fixed oil showed that the qualitative composition of the volatile compounds was almost identical. Differences were mainly restricted to the quantitative composition. Copyright 2000 John Wiley & Sons, Ltd.
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            Nutrient composition of kopyor coconuts (Cocos nucifera L.)

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              Filtration resistances in non-thermal sterilization of green coconut water

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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
                Role: ND
                Journal
                rbfar
                Revista Brasileira de Farmacognosia
                Rev. bras. farmacogn.
                Sociedade Brasileira de Farmacognosia (Curitiba )
                1981-528X
                March 2009
                : 19
                : 1b
                : 193-198
                Affiliations
                [1 ] Universidade Federal do Ceará Brazil
                [2 ] Natural Products Inc. United States
                Article
                S0102-695X2009000200002
                10.1590/S0102-695X2009000200002
                1f3de3a9-3c1f-4e45-a1c2-b02c9326f84e

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-695X&lng=en
                Categories
                PHARMACOLOGY & PHARMACY

                Pharmacology & Pharmaceutical medicine
                Cocos nucifera,Arecaceae,coconut water,chemical composition,antioxidant activity,água-de-coco,composição química,atividade antioxidante

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