- P-ISSN 1225-0163
- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Article Detail
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Electrochemical Study on Rancidity of a Soybean Oil
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2002, v.15 no.4, pp.388-391
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(2002). Electrochemical Study on Rancidity of a Soybean Oil. Analytical Science and Technology, 15(4), 388-391.
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Abstract
Rancidity of a soybean oil is investigated by an electrochmical method. The redox process of the soybean oil is totally irreversible and diffusion-controlled reaction. As scan rates are faster, the anodic peak potential of the soybean oil is shifted to the positive potential and the anodic current is increased. The anodic peak potentials of the soybean oil is not rarely changed up to open-42 days in the both atmosphere and room temperature. After the open times, the anodic peak potential is largely shifted to a negative direction. This indicates the oxidation of the soybean oil becomes easier. The anodic peak current of the soybean oil is decreased gradually up to open-42 days. But after the open times, the anodic peak current increases suddenly. It must be due to the formation of a carbonyl group owing to rancidity of the soybean oil.
- keywords
- soybean oil, rancidity, cyclic voltammetry
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