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Asian-Australasian Journal of Animal Sciences 2005;18(11): 1646-1654.
DOI: https://doi.org/10.5713/ajas.2005.1646    Published online December 2, 2005.
Properties of Cholesterol-reduced Butter and Effect of Gamma Linolenic Acid Added Butter on Blood Cholesterol
Tae-Hee Jung, Jae-Joon Kim, Sang-Hoon Yu, Joungjwa Ahn, Hae-Soo Kwak
The present study was carried out to develop cholesterol-reduced and gamma linolenic acid (GLA)-added butter and to examine the changes in chemical and sensory properties, and cholesterol lowering effect of GLA addition. The cholesterol removal rate reached 93.2% by 棺-cyclodextrin in butter before GLA addition. The thiobarbituric acid value of cholesterol-reduced and GLA-added butter increased slowly up to 4 week and plauteaued thereafter. TBA value was significantly increased with 2% GLA addition, compared with no GLA addition. The production of short-chain free fatty acids (FFA) increased with storage in all treatments. From 4 weeks storage, the amount of short-chain FFA in 2% GLA-added group was significantly higher than those in other groups. Among sensory characteristics, color, greasiness and overall acceptability were mostly affected by GLA addition, however, the rancidity value of 2% GLA addition was significantly different from those of control and GLA-unadded and cholesterol-reduced butter at 0, 6 and 8 week storage. Among groups, no difference was found in texture in all storage periods. The smallest increase of total blood cholesterol in rats was found in the group fed 2% GLA-added and cholesterol-reduced butter for 8 week, compared with that in controls. The present results showed the possibility of cholesterol-reduced and GLA-added butter development without much difference in chemical, rheological and sensory properties, and indicated a slow increase effect on blood total cholesterol in rats.
Keywords: Cholesterol-reduced Butter; Gamma Linolenic Acid; Blood Total Cholesterol; 棺-Cyclodextrin
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