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http://dx.doi.org/10.3746/jkfn.2010.39.9.1328

Development and Physical Properties of Low-Trans Spread Fat from Canola and Fully Hydrogenated Soybean Oil by Lipase-Catalyzed Synthesis  

Kim, Young-Joo (Dept. of Food Science and Technology, Chungnam National University)
Lyu, Hyun-Kyeong (Dept. of Food Science and Technology, Chungnam National University)
Shin, Jung-Ah (Dept. of Food Science and Technology, Chungnam National University)
Lee, Ki-Teak (Dept. of Food Science and Technology, Chungnam National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.39, no.9, 2010 , pp. 1328-1334 More about this Journal
Abstract
Low-trans spread fat (LTSF) was produced by lipase-catalyzed synthesis of canola (CO) and fully hydrogenated soybean oil (FHSBO) at 65:35 (w/w). Blend of CO and FHSBO with 65:35 ratio was interesterified using Lipozyme TLIM (immobilized Thermomyces lanuginosus, 20% of total substrate) in a 1 L-batch type reactor at $70^{\circ}C$ with 500 rpm for 24 hr. Then, physicochemical melting properties of LTSF were compared with commercial spread fat. At $20^{\circ}C$, solid fat contents (SFC) of commercial spread fat as a control and LTSF were similar, showing 19.1 and 18.1%, respectively. Major compositional fatty acids of LTSF were C18:0, C18:1 and C18:2 (29.2, 41.8 and 13.3 wt%, respectively). Trans fatty acid content of the LTSF (0.2 wt%) was lower than that of commercial spread fat (5.5 wt%). In the RP-HPLC analysis from LTSF, major triacylglycerol (TAG) molecules were SOL (stearoyl-oleoyl-linoleyl), SOO, POS/PSP, and SOS. Also, polymorphic form and x-ray diffraction of LTSF showed coexistence of $\beta$' and $\beta$ form crystals.
Keywords
enzymatic interesterification; canola oil; low-trans spread fat; polymorphic form; x-ray diffraction;
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