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Antimicrobial activity and chemical constituents of essential oils and oleoresins extracted from eight pepper species Ciência Rural
Martinelli,Laira; Rosa,Jessica Miranda; Ferreira,Carolina dos Santos Bragine; Nascimento,Gustavo Marcelo da Luz; Freitas,Mateus Silveira; Pizato,Luiz Carlos; Santos,Wanderson de Oliveira; Pires,Ricardo Francisco; Okura,Mônica Hitomi; Malpass,Geoffroy Roger Pointer; Granato,Ana Claudia.
ABSTRACT: Essential oils are the most important compounds produced during secondary metabolism in aromatic plants. Essential oils are volatile, have characteristic odor and are used as defensive agents by plants. In pepper, it is possible to say that essential oils are the “flavor fingerprint” of each species. In the present article, eight species of pepper were studied in order to extract their essential oils and oleoresins, test their antibacterial and antifungal activities and also to identify the compounds present in the most bioactive samples. Results demonstrated that two essential oils [Pimenta dioica (L.) Merr. and Schinus terebinthifolius] and three oleoresins (Schinus terebinthifolius and Piper nigrum white and black) recorded significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Peppers; Essential oil; Oleoresins; Antimicrobial activity; GC-MS.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500451
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Antimicrobial wound dressing films containing essential oils and oleoresins of pepper encapsulated in sodium alginate films Ciência Rural
Rosa,Jessica Miranda; Bonato,Letícia Bicudo; Mancuso,Carolina Bragine; Martinelli,Laira; Okura,Mônica Hitomi; Malpass,Geoffroy Roger Pointer; Granato,Ana Claudia.
ABSTRACT: Medicated wound dressings are important barriers to avoid contamination and, when they contain antimicrobial additives, can be used as treatment for infected wounds. There are several types of polysaccharide materials that serve as matrices for medicated wound dressings, among them, sodium alginate. For the preparation of the films studied in this paper, sodium alginate was employed in combination with essential oils/oleoresins (EO/OL) of six peppers that are commonly used in cooking. The EO/OL were incorporated at three different concentrations (low, intermediate and high). Most of the films prepared had better dispersion of the EO/OL at the intermediate concentration. All films studied in this research were dissolved in water at different...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medicated wound dressings; Alginate-based films; Essential oils; Oleoresins; Antibacterial activity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000300453
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Edible active coatings incorporated with Cinnamomum cassia and Myristica fragrans essential oils to improve shelf-life of minimally processed apples Ciência Rural
Santos,Sabrina Miqueletti dos; Malpass,Geoffroy Roger Pointer; Okura,Mônica Hitomi; Granato,Ana Claudia.
ABSTRACT: The effect of the incorporation of cinnamon (Cinnamomum cassia) and nut meg (Myristicafragrans) essential oils in alginate-based edible coatings that were applied on minimally processed apples, is reported. The minimum inhibitory concentrations were 1.25mg.mL-1 (cinnamon) and 2.50mg.mL-1 (nutmeg), against both Escherichia coli and Penicillium commune. Over storage periods there was a significant reduction in the E. coli and P. commune counts compared to the control. The extent of enzymatic browning was also significantly reduced in the coated samples. In the coated minimally processed apples sensory tests, the flavor had the lowest rating of the properties analyzed, for both treatments, followed by aroma and firmness.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sodium alginate; Cinnamon; Nut meg; Malus domestica; Food security.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200751
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