Deterioration of High-Oleic Safflower Oil Heated in Low Oxygen Atmospheres with Water-Spray
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概要
- 論文の詳細を見る
High-oleic safflower oil was heated at 180°C while spraying water in the atmosphere at four levels of oxgen concentration (2,4,10,20%) modified with nitrogen gas to assess the effects of atmospheric oxygen levels on the oxidative deterioration of deep-frying oils. Acid value, carbonyl value, polar material, linoleic acid and tocopherol content, and oxidative stability were measured to evaluate the qiality of heated oils. In general, all these indices correlated with both heating time and the atmospheric oxygen concentration. The increase in acid and carbonyl values and polar material content, and the decrease in linoleic acid and tocopherols in heated oils were almost proportional to the atmospheric oxygen concentration. Compared with heating without water as reported previously, spraying water accelerated the oxidative deterioration of heated oils in all indices. The acid value in particular changed remarkably, but hydrolysis of triacylglycerols did not occur without oxidation. The increase in the acid value was suggested to be due tu thermal oxidation rather than to simple hydrolysis of triacylglycerols. The oxidative stability of the heated oil at 2% and 4% O2 was well maintained. These results suggested that the rate of oxidative deterioration in deep-frying oil is nearly proportional to the atmospheric oxygen concentration.
- 日本油化学会の論文
- 2001-02-01
著者
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Fujimoto Kenshiro
Graduate School Of Agricultural Science Tohoku University
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Kimura Fumiko
東北大学 農学研究科
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Kimura Fumiko
Grad. Sch. Agr. Sci. Tohoku Univ.
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Endo Yasushi
東北大学 大学院農学研究科
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Endo Yasushi
Grakuate School Of Agricultural Science Tohoku University
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Yasushi Endo
Grakuate School Of Agricultural Science Tohoku University
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Yasushi Endo
Laboratory Of Food And Bio-molecular Science Graduate School Of Agricultural Science Tohoku Universi
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Kimura F
Graduate School Of Agricultural Science Tohoku University
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Mohri Satoshi
Miyagi Prefectural Institute Of Technology
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Fujimoto Kenshiro
Faculty Of Agriculture Tohoku University
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FUJISAKI Mariko
Grakuate School of Agricultural Science, Tohoku University
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FUJIMOTO Kenshiro
Grakuate School of Agricultural Science, Tohoku University
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Kimura F
Laboratory Of Food And Biomolecular Science Graduate School Of Agricultural Science Tohoku Universit
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Fujimoto Kenshiro
Grakuate School Of Agricultural Science Tohoku University
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Kimura Fumiko
Laboratory Of Food And Bio-molecular Science Graduate School Of Agricultural Science Tohoku Universi
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Mohri Satoshi
Industrial Technology Institute Miyagi Prefectural Government
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Fujisaki Mariko
Grakuate School Of Agricultural Science Tohoku University
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