Targeted Metabolite Analysis and Biological Activity of Pieris brassicae Fed with Brassica rapa var. rapa

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

David M Pereira (Autor) Outra; Alexandra Noites (Autor) Outra; Patricia Valentao (Autor) FFUP; Federico Ferreres (Autor) Outra; Jose A Pereira (Autor) Outra; Luis Vale Silva (Autor) Outra; Eugenia Pinto (Autor) FFUP; Paula B Andrade (Autor) FFUP

Revista

Título: Journal of Agricultural and Food Chemistry

Vol. 57 Nº 19

Páginas: 483-489

ISSN: 0021-8561

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 15 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: P-003-NQJ

DOI: 10.1021/jf8031638

Resumo (PT): For the first time, an insect−plant system, Pieris brassicae fed with Brassica rapa var. rapa, was tested for its biological capacity, namely, antioxidant (DPPH•, •NO, and O2•− radicals) and antimicrobial (bacteria and fungi) activities. Samples from the insect’s life cycle (larvae, excrements, exuviae, and butterfly) were always found to be more efficient than the host plant. Also, P. brassicae materials, as well as its host plant, were screened for phenolics and organic acids. The host plant revealed higher amounts of both compounds. Two phenolic acids, ferulic and sinapic, as well as kaempferol 3-O-sophoroside, were common to insect (larvae and excrements) and plant materials, with excrements being considerably richer. Detection of sulfated compounds in excrements, absent in host plant, revealed that metabolic processes in this species involved sulfation. Additionally, deacylation and deglycosilation were observed. All matrices presented the same organic acids qualitative profile, with the exception of excrements <br> <br> <a target="_blank" href="http://pubs.acs.org/doi/abs/10.1021/jf8031638"> Texto integral </a> <br> <br>

Abstract (EN): For the first time, an insect-plant system, Pieris brassicae fed with Brassica rapa var. rapa, was tested for its biological capacity, namely, antioxidant (DPPH(center dot), (center dot)NO, and O(2)(center dot-) radicals) and antimicrobial (bacteria and fungi) activities. Samples from the insect's life cycle (larvae, excrements, exuviae, and butterfly) were always found to be more efficient than the host plant. Also, P. brassicae materials, as well as its host plant, were screened for phenolics and organic acids. The host plant revealed higher amounts of both compounds. Two phenolic acids, ferulic and sinapic, as well as kaempferol 3-O-sophoroside, were common to insect (larvae and excrements) and plant materials, with excrements being considerably richer. Detection of sulfated compounds in excrements, absent in host plant, revealed that metabolic processes in this species involved sulfation. Additionally, deacylation and deglycosilation were observed. All matrices presented,the same organic acids qualitative profile, with the exception of excrements.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7