The Efficiency of TBHQ, β-carotene, Citric Acid, and Tinuvin 234® on the Sensory Stability of Soybean Oil Packaged in PET Bottles

Authors

  • H.M.C. de Azeredo,

    1. Author de Azeredo is with the Empresa Agroindústria Tropical, RuaDra. SaraMesquita, 2270– Pici, Fortaleza– CE, CEP: 60511–110, Brazil. Authors Faria and da Silva are with the Depto. de Tecnologia de Alimentos—FEA&Mdash;Univ. Estadual de Campinas. C.P. 6121, Campinas/SP, Brazil. CEP 13081970. Direct inquiries to author de Azeredo (E-mail: ette@cnpat.embrapa.br).
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  • J.A.F. Faria,

    1. Author de Azeredo is with the Empresa Agroindústria Tropical, RuaDra. SaraMesquita, 2270– Pici, Fortaleza– CE, CEP: 60511–110, Brazil. Authors Faria and da Silva are with the Depto. de Tecnologia de Alimentos—FEA&Mdash;Univ. Estadual de Campinas. C.P. 6121, Campinas/SP, Brazil. CEP 13081970. Direct inquiries to author de Azeredo (E-mail: ette@cnpat.embrapa.br).
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  • M.A.A.P. da Silva

    1. Author de Azeredo is with the Empresa Agroindústria Tropical, RuaDra. SaraMesquita, 2270– Pici, Fortaleza– CE, CEP: 60511–110, Brazil. Authors Faria and da Silva are with the Depto. de Tecnologia de Alimentos—FEA&Mdash;Univ. Estadual de Campinas. C.P. 6121, Campinas/SP, Brazil. CEP 13081970. Direct inquiries to author de Azeredo (E-mail: ette@cnpat.embrapa.br).
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  • The financial support provided by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil, is gratefully acknowledged.

Abstract

ABSTRACT: The use of plastic packaging for oils permits exposure to light, increasing oxidation. The goal of this work was to maximize sensory stability of soybean oil packaged in PET bottles. A central composite design was used to combine different levels of TBHQ, β-carotene, and citric acid, added to oil, and Tinuvin 234®, added to bottles. After 6 mo of storage, the oxidation degree was assessed by sensory and peroxide tests. TBHQ and Tinuvin 234 were the most effective antioxidants, and the minimum concentrations required to keep a reasonable stability during storage were: 120 ppm of TBHQ; 7 ppm of β-carotene; 15 ppm of citric acid and 0.1% of Tinuvin 234.

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