Residue levels of food-grade antioxidants in postharvest treated in-pod peanuts during five months of storage |
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Authors: | María A Passone Gustavo J Funes Silvia L Resnik Miriam G Etcheverry |
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Affiliation: | 1. (CONICET) Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36, km 601, 5800, Córdoba, Argentina;2. Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Argentina;3. (CIC) Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Argentina |
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Abstract: | In order to investigate residue levels of butylated hydroxyanisole (BHA), propyl paraben (PP) and butylated hydroxytoluene (BHT) during storage, eight-hundred kilograms of bulk peanuts were treated with the following antioxidant emulsions: BHA (1802 μg g−1), BHA–PP (1802 μg g−1 + 1802 μg g−1) M1 and BHA–PP–BHT mixtures (1802 μg g−1 + 901 μg g−1 + 2204 μg g−1) M2 and (1802 μg g−1 + 1802 μg g−1 + 2204 μg g−1) M3. Residues were determined in peanut pod and seed tissues at 1-month intervals during the storage. While the reduction levels of BHA and PP in pods at the end of the storage period ranged from 66% to 76%, BHT levels were decreased extensively (86%). Twenty-four hours after peanuts were treated, antioxidant emulsions effectively seeped into the seeds and low levels of these chemicals were detected during the assay. Residues of PP in seeds were lower (62%) than the other antioxidants. Although the doses used were higher than those approved for food-grade antioxidants in stored peanuts, the residue levels in seeds (32.8–0.02 μg g−1) did not exceed the maximum residue limits during the storage period. |
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Keywords: | Antioxidant Butylated hydroxyanisole Butylated hydroxytoluene Propyl paraben Peanut Storage HPLC |
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