allelopathic effects of orange (citrus sinensis l.) peel essential oil efeitos alelopáticos do óleo essencial da casca da laranja (citrus sinensis l.)

Clicks: 254
ID: 204298
2012
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Abstract
Crop weeds are the main problem in agriculture, causing a worldwide annual loss of about US$95 billion. The principal method for control is the use of synthetic herbicides. The continued use of these products increases crop costs, reduces crop quality, and leaves toxic residues in the environment, which are a threat to human and livestock health. Therefore, there is a demand for environmentally friendly methods of weed control. The use of allelopathic compounds from crop residues is an alternative. Orange is one of the biggest crops in the world, and its cultivation generates large amounts of residues. There is strong evidence of bioactivity in orange peel essential oil. Therefore, the objective in this work was to verify the allelopathic proprieties of this oil. We extracted the oil from the peels of recently discarded oranges using water vapor flow with a Clevenger extractor, and tested it against the growth of Euphorbia heterophylla L. and Ipomoea grandifolia (Dammer) O'Donell seedlings when placed in contact with the oil vapor. The results were both quantitative and qualitative in the inhibition of the seedlings.
Plantas daninhas são o principal problema da agricultura no mundo, causando anualmente um prejuízo de U$95 bilhões. A principal forma de combate às plantas daninhas são os herbicidas sintéticos. Entretanto, o uso continuado desses produtos encarece a produção, reduz a qualidade dos alimentos, deixa resíduos tóxicos no ambiente e ameaça a saúde humana e animal. Existe assim, uma demanda por técnicas menos agressivas de controle. O uso de compostos alelopáticos de descartes de culturas para esse fim é uma alternativa. A laranja é uma das maiores culturas do mundo, e gera grandes quantidades de resíduos. Existem evidências da bioatividade no óleo essencial da casca da laranja. Nesse trabalho, nosso objetivo foi verificar a existência de propriedades alelopáticas desse óleo. Para isto, extraímos o óleo por arraste de vapor de água utilizando o aparelho de Clevenger, e colocamos os produtos volatilizáveis do óleo essencial em contato com plântulas de Euphorbia heterophylla L. e Ipomoea grandifolia (Dammer) O'Donell. O resultado foi inibição tanto quantitativa quanto qualitativa das plântulas
Reference Key
ribeiro2012actaallelopathic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jose Pedro Nepomuceno Ribeiro;Maria Inês Salgueiro Lima
Journal monatshefte für chemie chemical monthly
Year 2012
DOI
10.1590/S0102-33062012000100025
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000100025
Keywords
weeds crop residues allelopathy alelopatia

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