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Title: Targeted metabolite analysis and biological activity of Pieris brassicae fed with Brassica rapa var. rapa.
Authors: Pereira, D.M.
Noites, A.
Valentão, P.
Ferreres, F.
Pereira, J.A.
Vale-Silva, Luís A.
Pinto, Eugénia
Andrade, P.B.
Keywords: Brassica rapa var. rapa
Pieris brassicae
Plant-insect interactions
Phenolic compounds
Organic acids
Antioxidant activity
Issue Date: 2009
Publisher: ACS
Citation: Pereira, D.; Noites, A.; Valentão, P.; Ferreres, F.; Pereira, J.A.; Vale-Silva, L.; Pinto, E.; Andrade, P.B. (2009) - Targeted metabolite analysis and biological activity of Pieris brassicae fed with Brassica rapa var. rapa. Journal of Agricultural and Food Chemistry. ISSN 1520-5118. 57:2, p. 483-489
Series/Report no.: 57;
Abstract: 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-Osophoroside, 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.
Peer review: yes
ISSN: 1520-5118
Publisher Version:
Appears in Collections:PTV - Artigos em Revistas Indexados ao ISI/Scopus

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