Study of Bixin oxidation by ionizing irradiation
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2017
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WORLD CHEMISTRY CONGRESS, 46th; ANNUAL MEETING OF THE BRAZILIAN CHEMICAL SOCIETY, 40th; IUPAC GENERAL ASSEMBLY, 49th
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Resumo
Brazil is the world's largest producer of annatto, followed by Kenya and Peru (CORLETT, 2007).
The fruit of the annatto tree is constituted by a capsule containing external spines and internal
seeds with reddish coloration, providing a natural pigment which is environmentally efficient,
being able to replace synthetic pigments and dyes. The active substance of the pigment is Bixin,
which is a type of carotenoid which constit utes a greater percentage of pigment in these seeds
and has a lipo soluble character ( CUSTODIO , 2002 ). Bixin reacts with NaOH in a saponification
reaction giving norbixin, which is water soluble. It is known that the destination of the dye
extracted from t he fruit is intended for industry, especially the food industry. The culture of
annatto tree brings prospects of development of agricultural programs for medium and small
producers, which are able to use decadent areas of other crops. In addition to the fo od sector,
new applications for the pigment helps the development of family farming (BERTOLIN, 2016).
The pigment extracted from annatto undergoes a natural oxidation; this work aims to evaluate
this phenomenon and also the oxidation of the pigment after the irradiation process. This work
also evaluates of the how the oxidation process is affected by irradiation and the modifications
introduced to irradiated pigments.
Irradiated and non
irradiated samples were characterized by UV vis s pectrophotometry a nd
infrared spectroscopy (FTIR). The results are then discussed.
Como referenciar
FONSECA, THAIS N.; MOURA, EDUARDO de; GERALDO, AUREA B.C. Study of Bixin oxidation by ionizing irradiation. In: WORLD CHEMISTRY CONGRESS, 46th; ANNUAL MEETING OF THE BRAZILIAN CHEMICAL SOCIETY, 40th; IUPAC GENERAL ASSEMBLY, 49th, July 07-14, 2017, São Paulo, SP. Abstract... Durham, NC, USA: International Union of Pure and Applied Chemistry, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/31180. 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.