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Evaluation of stored sunflower oil with the addition of antioxidants
- Source :
- Food Science and Technology, Volume: 28, Issue: 2, Pages: 498-502, Published: JUN 2008, SciELO, Repositório Institucional da UNESP, Universidade Estadual Paulista (UNESP), instacron:UNESP, Food Science and Technology v.28 n.2 2008, Food Science and Technology (Campinas), Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA), instacron:SBCTA
- Publication Year :
- 2008
- Publisher :
- Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2008.
-
Abstract
- Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:53:08Z No. of bitstreams: 1 S0101-20612008000200035.pdf: 152769 bytes, checksum: 05c86cc7f5c7a3ecec6df28476fe03f7 (MD5) Made available in DSpace on 2013-08-22T18:53:08Z (GMT). No. of bitstreams: 1 S0101-20612008000200035.pdf: 152769 bytes, checksum: 05c86cc7f5c7a3ecec6df28476fe03f7 (MD5) Previous issue date: 2008-06-01 Made available in DSpace on 2013-09-30T18:43:08Z (GMT). No. of bitstreams: 2 S0101-20612008000200035.pdf: 152769 bytes, checksum: 05c86cc7f5c7a3ecec6df28476fe03f7 (MD5) S0101-20612008000200035.pdf.txt: 25765 bytes, checksum: f37afe39d84cc4915ec02888b44d727e (MD5) Previous issue date: 2008-06-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T14:02:13Z No. of bitstreams: 2 S0101-20612008000200035.pdf: 152769 bytes, checksum: 05c86cc7f5c7a3ecec6df28476fe03f7 (MD5) S0101-20612008000200035.pdf.txt: 25765 bytes, checksum: f37afe39d84cc4915ec02888b44d727e (MD5) Made available in DSpace on 2014-05-20T14:02:13Z (GMT). No. of bitstreams: 2 S0101-20612008000200035.pdf: 152769 bytes, checksum: 05c86cc7f5c7a3ecec6df28476fe03f7 (MD5) S0101-20612008000200035.pdf.txt: 25765 bytes, checksum: f37afe39d84cc4915ec02888b44d727e (MD5) Previous issue date: 2008-06-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) O trabalho teve como objetivo avaliar os efeitos, isolado e sinergista, dos antioxidantes, extrato de coentro e palmitato de ascorbila, em óleo de girassol submetido ao teste acelerado em estufa. Desta forma, o óleo de girassol isolado e adicionado de 1.600 mg.kg-1 de extrato de coentro, 500 mg.kg-1 de palmitato de ascorbila e da mistura destes antioxidantes foi submetido ao teste acelerado em estufa a 60 °C por 10 dias, cujas amostras foram tomadas nos intervalos de tempo de 0, 2, 4, 6, 8 e 10 dias e analisadas quanto ao índice de peróxidos e dienos conjugados. Os resultados obtidos das determinações analíticas foram submetidos às análises de variância e aos testes de Tukey para as médias a 5%, em esquema fatorial, no delineamento inteiramente casualizado. A partir dos resultados, verificou-se que os antioxidantes extrato de coentro, palmitato de ascorbila e a mistura dos antioxidantes quando adicionados no óleo de girassol apresentaram capacidade em retardar a formação de peróxidos em 16,4, 77,5 e 84,0% e dienos conjugados em 11,2, 56,9 e 60,9%, respectivamente. A mistura dos antioxidantes adicionada ao óleo de girassol apresentou um poder antioxidante maior que os antioxidantes aplicados isolados, comprovando o efeito sinergístico dos antioxidantes estudados. The objective of this work was to evaluate the isolated and synergistic effects of the antioxidants coriander extract and ascorbyl palmitate in sunflower oil, submitted to an accelerated storage test. Thus, sunflower oil (control) and sunflower oil with the addition of 1,600 mg.kg-1 coriander extract, 500 mg.kg-1 ascorbyl palmitate and a mixture of these antioxidants were submitted to an accelerated storage test in an oven at 60 °C for 10 days, where samples were taken at time intervals of 0, 2, 4, 6, 8 and 10 days and analysed for peroxide value and conjugated dienes. The results obtained from the analytical determinations were submitted to analysis of variance and the Tukey test at 5%, in a factorial scheme, following an entirely casualized design. From the results obtained, it was verified that the antioxidants coriander extract, ascorbyl palmitate and the mixture of these antioxidants, when added to sunflower oil, showed the ability to retard the formation of peroxides 16.4, 77.5 and 84.0% and conjugated dienes 11.2, 56.9 and 60.9%, respectively. The antioxidant mixture presented a higher antioxidant potential in sunflower oil than the antioxidants applied alone, which proved the synergistic effect of the antoxidants studied. Universidade Estadual de São Paulo Instituto de Biociências, Letras e Ciências Exatas Departamento de Engenharia e Tecnologia de Alimentos
- Subjects :
- food.ingredient
Antioxidant
medicine.medical_treatment
Ascorbyl palmitate
Antioxidant potential
chemistry.chemical_compound
coriander extract
food
Coriander Extract
ascorbyl palmitate
medicine
índice de peróxidos
Organic chemistry
conjugated dienes
Peroxide value
Food science
extrato de coentro
peroxide value
óleo de girassol
Chemistry
Sunflower oil
palmitato de ascorbila
dienos conjugados
Tukey's range test
sunflower oil
Food Science
Biotechnology
Subjects
Details
- Language :
- Portuguese
- ISSN :
- 01012061
- Database :
- OpenAIRE
- Journal :
- Food Science and Technology, Volume: 28, Issue: 2, Pages: 498-502, Published: JUN 2008, SciELO, Repositório Institucional da UNESP, Universidade Estadual Paulista (UNESP), instacron:UNESP, Food Science and Technology v.28 n.2 2008, Food Science and Technology (Campinas), Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA), instacron:SBCTA
- Accession number :
- edsair.doi.dedup.....bd5ac654f813be309606815e3d67e3c5