Aplicação de códigos de barras de ADN (DNA Barcoding) para a identificação de espécies vegetais de interesse industrial

Autores

DOI:

https://doi.org/10.26461/20.06

Palavras-chave:

ADN, Ervas aromáticas, Ervas medicinais, Classificação

Resumo

O mercado dos produtos botânicos está em crescimento a nível mundial, devido à preferência dos consumidores por produtos naturais. Isto torna-os alvos de adulteração, o que é mais comum e difícil de detectar nos derivados industrializados. É fundamental dispor de procedimentos fiáveis que permitam a sua autenticação. Neste estudo, foram aplicadas ferramentas moleculares baseadas no ADN para gerar informação genómica aplicada para classificar amostras de ervas aromáticas e medicinais frescas e industrializadas. O trabalho baseou-se na estratégia de codificação de barras de ADN utilizando amostras de tecido fresco de identidade taxonómica conhecida (referências) e amostras industrializadas. Os resultados obtidos indicam que os marcadores rbcL e matK são amplificáveis com os iniciadores utilizados, obtendo sequências bidireccionais de alta qualidade no caso do tecido fresco em 83% dos casos para rbcL e em 63% dos casos para matK. Nas amostras industrializadas, os valores foram de 50 e 35%, respectivamente. A ferramenta BOLD permitiu a classificação da maioria das amostras. Esta metodologia é uma ferramenta útil e acessível que permite a classificação em grupos, embora o seu desempenho seja limitado pela representação das espécies nas bases de dados.

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Biografia do Autor

Fabiana Rey Bentos, Latitud, Fundación LATU. Montevideo, Uruguay

Investigador

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Publicado

2020-06-10

Como Citar

Rey Bentos, F., & Capdevielle Sosa, F. M. (2020). Aplicação de códigos de barras de ADN (DNA Barcoding) para a identificação de espécies vegetais de interesse industrial. INNOTEC, (20 jul-dic), 117–138. https://doi.org/10.26461/20.06

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