Effect of gamma radiation processing on the antioxidant activity of ginger
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2017
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INTERNATIONAL SYMPOSIUM ON RECENT ADVANCES IN FOOD ANALYSIS, 8th
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Biological activity of ginger, especially antioxidant activity,
has been associated to their bioactive compounds, gingerols,
mainly 6-gingerol. Foods have some key compounds, which
regulate their taste, aroma and nutritional profile, even if they
are present in low concentration. These compounds used to
be sensitive to irradiation in high doses. The aim of this study
was to evaluate the effectiveness of gamma irradiation from
60Co at doses 0, 5, 10, 15 and 20 kGy on ginger (ZINGIBER
officinalle Roscoe), particularly about its antioxidant activity.
The quantification of phenolic compounds was performed by
Folin-Ciocalteu method and assessing the potential of
antioxidant activity by the free radical [2,2 difenil-1-pricrilhidrazil
(DPPH•)] scavenging and by Rancimat® method. The
6-gingerol quantification was performed by High
Performance Liquid Chromatography (HPLC). There were no
significant differences of total phenolic compounds in the
irradiated samples compared to control (p>0,05).
Eventhough, no irradiated extract showed higher ability on
free radical scavenging. The Rancimat® method showed that
antioxidant activity index (AAI) was not significant different
(p>0,05) between analyzed extracts, as well as 6-gingerol
quantification. It could be concluded that gamma radiation
processing may be a feasible alternative for ginger because it
does not significantly alter its major phenolic compounds or
its significant antioxidant potential.
Como referenciar
ALMEIDA, MARIANA C. de; SAMPAIO, GENI R.; BASTOS, DEBORAH H.M.; VILLAVICENCIO, ANNA L.C.H. Effect of gamma radiation processing on the antioxidant activity of ginger. In: INTERNATIONAL SYMPOSIUM ON RECENT ADVANCES IN FOOD ANALYSIS, 8th, November 07-10, 2017, Prague, Czech Republic. Abstract... Prague, Czech Republic: University of Chemistry and Technology, 2017. p. 269-269. Disponível em: http://repositorio.ipen.br/handle/123456789/28809. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.