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KMID : 0380619900220060681
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Korean Journal of Food Science and Technology
1990 Volume.22 No. 6 p.681 ~ p.685
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Changes in the Physicochemical Characteristics and Trans Acid of Cottonseed Oil during Selective Hydrogenation
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김종수/Kim, Jong Soo
최춘언/안태회/김현위/박기문/심중환/박성준/Choi, Chun Un/Ahn, Tae Hoe/Kim, Hyean Wee/Park, Ki Moon/Shim, Joong Hwan/Park, Seong Joon
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Abstract
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Changes in the physicochemical characteristics and trans acid of cottonseed oil under the condition of selective hydrogenation, temperature 210C, HZ pressure 0.3 kg/㎠, Ni catalyst amount 0.12%(in oil), agitation speed 280 rpm, were investigated. The saturated fatty acid such as palmitic acid and stearic acid did not show any difference, while linoleic acid(50.03%⇒9.38%) were transformed to oleic acid (20.65%⇒60.35%) during hydrogenation. In linoleic acid isomers, cc form were reduced significantly, but ct, tc, tt form showed little change, respectively. In oleic acid isomer, t form increased markedly, whereas there was no significant difference in c form. Meanwhile, melting point(MP) and solid fat content (SFC) were linearly increased, but iodine value(IV) linearly decreased as hydrogenation proceeded. From these results, linear regression equations were obtained as follows. MP & IV : Y=1.59-2.36X(r=-0.96, p$lt;0.05), SFC(at 20C) & MP : Y=2.81+2.01X(r=0.96, p$lt;0.05), SFC (at 20℃) & IV : Y=9.40-5.16X(r=-0.99, p$lt;0.01). SFC(at 20℃) & 18 : It : Y=6.25+8.48X(r=0.97, p$lt; 0.05)
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KEYWORD
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