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http://dx.doi.org/10.11002/kjfp.2011.18.5.692

Physicochemical Characteristics of Yanggaeng with Pear Juice and Dried Pear Powder Added  

Park, Yeon-Ok (Pear Research Station, National Institute of Horticultural & Herbal Science)
Choi, Jin-Ho (Pear Research Station, National Institute of Horticultural & Herbal Science)
Choi, Jang-Jeon (Pear Research Station, National Institute of Horticultural & Herbal Science)
Yim, Sun-Hee (Pear Research Station, National Institute of Horticultural & Herbal Science)
Lee, Han-Chan (Pear Research Station, National Institute of Horticultural & Herbal Science)
Yoo, Maeng-Ja (Dept. of Hotel Culinary, Songwon College)
Publication Information
Food Science and Preservation / v.18, no.5, 2011 , pp. 692-699 More about this Journal
Abstract
This study was conducted to investigate the physicochemical characteristics of yanggaeng prepared with pear juice and dried pear powder. The proximate composition and total polyphenol content, antioxidant activities, Hunter's color values, texture, sensory properties of pear yanggaeng variants [pear juice (PJ), pear juice and hot-air-dried pear powder (PJH), pear juice and freeze-dried pear powder (PJF) yanggaeng] were examined. The moisture content was highest (27.9%) in the control (C) yanggaeng, but the latter's energy and carbohydrate content were lower than in the pear yanggaeng variants. The differences between the pear yanggaeng variants were not significant.The total polyphenol content was highest in the 20.7 mg/100g PJF yanggaeng. The antioxidant activities of PJF yanggaeng were higher than those of the other pear yanggaeng varients. The Hunter color value results showed that the lightness (L) values were highest in C yanggaeng whereas the redness(a) and yellowness(b) values were highest in PJH yanggaeng. The springiness in texture was lowest in C yanggaeng and not significant in the others. The hardness and chewiness were highest in PJH and PJF yanggaeng, but adhesiveness was lowest therein. The results of the sensory test showed that PJF yanggaeng was the highest in flavor, color, taste, hardness, chewiness, and overal quality. Based on these results, it can be concluded that pear juice and freeze-dried pear powder yanggaeng has excellent physicochemical and antioxidant activities.
Keywords
antioxidant; polyphenol; texture; sensory properties; yanggaeng;
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Times Cited By KSCI : 10  (Citation Analysis)
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