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KMID : 1007520200290040479
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Food Science and Biotechnology
2020 Volume.29 No. 4 p.479 ~ p.486
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Effects of 1,2-dioleoyl-sn-glycero-3-phosphocholine on moisture content and oxidative stability in soybean oil?water system at different interfaces
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Kwon Yong-Jun
Jo Seung-Been
Na Hee-Sun
Kim Sung-Hwa
Kim Mi-Ja
Lee Jae-Hwan
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Abstract
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Effects of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) on the oxidative stability were determined in soybean oil?water system at different locations including at the interface of air?oil, in the middle of oil, and at the interface of oil?water. Also, profile changes of tocopherols were determined during UV irradiation for 18 days. Although no significant changes in tocopherol profiles were observed at three different locations irrespective of DOPC from 0 to 1250 μmol/kg oil, addition of DOPC increased total tocopherols, α-tocopherol, and δ-tocopherol whereas content of β?+?γ tocopherols did not increase at any locations. Moisture content in water?oil interface was higher than other locations while those were not consistent at different DOPC concentration. Added DOPC significantly decreased oxidative stability from 250 to 830 μmol/kg oil compared to controls (p?
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KEYWORD
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Interface, Tocopherol profile, Phospholipid, Oxidative stability, UV irradiation
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