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KMID : 0380020070220050336
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Korean Journal of Biotechnology and Bioengineering
2007 Volume.22 No. 5 p.336 ~ p.340
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Coffee Deodorization with Supercritical Carbon Dioxide
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Lee Joo-Hee
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Abstract
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Supercritical carbon dioxide was used to remove coffee odors. The odor removal efficiency was tested with coffee drink prepared by the espresso extraction method. Five typical odors in coffee were analyzed with GC and these odors in deodorized coffee were compared to those in control. Supercritical carbon dioxide extraction conditions were optimized as 350 bar and 70 because the solvating power of supercritical fluid is depend on the density which is determined by temperature and pressure. A modified head space method was applied to collect coffee odors in coffee drink prepared by the espresso extraction method. Odors generated in coffee drink made with deodorized coffee powder were reduced by 73% in total mass of typical five coffee odors.
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KEYWORD
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Coffee, deodorization, supercritical carbon dioxide
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