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http://dx.doi.org/10.3746/jkfn.2008.37.9.1182

Changes of Free Sugar on Gugija-sugar Leaching Processing from Gugija (Lycii fructus) Raw Fruit  

Lee, Ka-Soon (Geumsan Ginseng & Medicinal Crop Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Kim, Gwan-Hou (Geumsan Ginseng & Medicinal Crop Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Kim, Hyun-Ho (Geumsan Ginseng & Medicinal Crop Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Lee, Hee-Chul (Cheongyang Boxthorn Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Oh, Man-Jin (Dept. of Food Science and Technology, Chungnam National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.37, no.9, 2008 , pp. 1182-1189 More about this Journal
Abstract
Changes of free sugar on Gugija-sugar leaching were investigated by adding sugar on Gugija (Lycii fructus) raw fruit. Gugija were prepared by parboiling ($40{\sim}50$ sec at hot water of $85^{\circ}C$) and unparboiling. Gugija-sugar leaching were leached after preserving (5 and 10 months at $5^{\circ}C$) Gugija-sugar mixture (ratio of raw Gugija and sugar, 1:0.2, 1:0.4, 1:0.6, 1:0.8, and 1:1/w:w). Soluble starch content of Gugija-sugar leaching increased with increasing ratio of sugar without reference to parboiling treatment, having the highest content, 2.5% at UPRGSL-4 (unparboiling Gugija:sugar, 1:0.8 leaching). Maltose content increased with increasing ratio of sugar in PRGSL, being the highest at 12.66% in PRGSL-5 (parboiling Gugija:sugar, 1:1 leaching) at 10 months leaching periods. Most of the sucrose went out of existence with increasing leaching periods; content was 4.22% on PRGSL-5 and 1.36% on UPRGSL-5. Content of glucose and fructose increased with increasing ratio of sugar; glucose content was 7.86% on PRGSL-4 and 26.22% on UPRGSL-5, at 10 months leaching periods. Fructose content was 18.46% on PRGSL-5 and 22.51% on UPRGSL-4 at 10 months leaching periods. Contents of sorbitol and glycerol increased with increasing ratios of sugar.
Keywords
Lycii fructus raw fruit; Gugija-sugar mixture; leaching; sucrose; glucose; fructose;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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