Screening of antioxidant compounds during sprouting of Brassica oleracea L. var. costata DC

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Carla Sousa (Author) REIT; Lopes, G (Author) Other; David M Pereira (Author) Other; Taveira, M (Author) Other; Patricia Valentao (Author) FFUP; Seabra, RM (Author) Other; Pereira, JA (Author) Other; Baptista, P (Author) Other; Ferreres, F (Author) Other; Paula B Andrade (Author) FFUP

Journal

Title: Combinatorial Chemistry and High Throughput Screening

Vol. 10

Pages: 377-386

ISSN: 1386-2073

Publisher: Bentham

Indexing

ISI Web of Knowledge - 24 Citations

ISI Web of Science

Scopus - 29 Citations

Scientific classification

FOS: Medical and Health sciences > Other medical sciences

CORDIS: Health sciences

Other information

Authenticus ID: P-004-9K7

DOI: 10.2174/138620707781662817

Resumo (PT): The changes in antioxidant compounds of Brassica oleracea L. var. costata DC seeds were monitored during the first twelve days of seedling development. Sprouts were screened at time intervals of two days for phenolic compounds and organic acids. The identified phenolic compounds included esters of sinapic acid with glucose, gentiobiose and kaempferol, as well as sinapoylcholine. The organic acids were oxalic, aconitic, citric, pyruvic, malic, shikimic, and fumaric acids. During germination, a depletion of phenolic compounds was observed, although no qualitative changes were seen. Among individual compounds, kaempferol, choline and glucose esters of sinapic acid showed a marked decrease between days two and six, whereas the changes in gentiobiose esters of sinapic acid were smaller. The total organic acids content increased rapidly during the first four days, with less significant variations thereafter. Malic acid, the major organic acid found in sprouts, greatly contributed to this result though oxalic, pyruvic, and fumaric acids also increased in the same manner. In contrast, aconitic, citric and shikimic acids showed decreases between days two and twelve of germination. <br> <br>

Abstract (EN): The changes in antioxidant compounds of Brassica oleracea L. var. costata DC seeds were monitored during the first twelve days of seedling development. Sprouts were screened at time intervals of two days for phenolic compounds and organic acids. The identified phenolic compounds included esters of sinapic acid with glucose, gentiobiose and kaempferol, as well as sinapoylcholine. The organic acids were oxalic, aconitic, citric, pyruvic, malic, shikimic, and fumaric acids. During germination, a depletion of phenolic compounds was observed, although no qualitative changes were seen. Among individual compounds, kaempferol, choline and glucose esters of sinapic acid showed a marked decrease between days two and six, whereas the changes in gentiobiose esters of sinapic acid were smaller. The total organic acids content increased rapidly during the first four days, with less significant variations thereafter. Malic acid, the major organic acid found in sprouts, greatly contributed to this result though oxalic, pyruvic, and fumaric acids also increased in the same manner. In contrast, aconitic, citric and shikimic acids showed decreases between days two and twelve of germination.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10