Effects of gama-radiation on white tea volatiles
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2009
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st
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Tea is the second most widely consumed beverages in the world and is processed from two and a bud of
Camellia sinensis (L.). Depending on the processing may give rise to four mainly teas (green, black, oolong and
white tea). The white tea is the one that has recently awakened interest in scientific community due the fact that
this tea has more antioxidant property and activity than green tea. A further industrialization and
commercialization of these plants become a problem of public health. The presence of potentially toxigenic
fungi can be found in these products, indicating a great potential for the presence of mycotoxins that can cause
acute and chronic effects in different organs and systems of the human body. Ionizing radiation is one of the
most effective means disinfecting dry food ingredients. This treatment can inhibit cellular life division, like
microorganisms, promoting a molecular structural modification. The aim of this study was evaluate the effects
of radiation on volatile formation in white tea. Samples were irradiated in room temperature at 60Co source
Gammacell 220 (A.E.C. Ltda) at doses of 0, 5, 10, 15 and 20kGy. The volatiles organic compound was
extracted by hydrodestilation and the extract was separated and identified by gas chromatography–mass
spectrometry (GC–MS) analysis. The results show that the quantities of volatiles formations are directly
proportional to the increase of radiation dose. About 37.86% of the compounds were stable at all radiation doses
and 47.53% of new compounds were identified after irradiation.
Como referenciar
FANARO, GUSTAVO B.; SILVEIRA, ANA P.M.; NUNES, THAISE C.F.; COSTA, HELBERT S.F.; PURGATTO, EDUARDO; VILLAVICENCIO, ANNA L.C.H. Effects of gama-radiation on white tea volatiles. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/16560. 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.