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http://dx.doi.org/10.9721/KJFST.2012.44.1.028

Quality Characteristics of Puffed Snacks (ppeongtuigi) with Purple Sweet Potato Flours Using Different Puffing Conditions  

Cheon, Seon-Hwa (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University)
Hwang, Su-Jung (Faculty of Herbal Food Cuisine & Nutrition, Daegu Haany University)
Eun, Jong-Bang (Department of Food Science and Technology, and Functional Food Research Center, Chonnam National University)
Publication Information
Korean Journal of Food Science and Technology / v.44, no.1, 2012 , pp. 28-33 More about this Journal
Abstract
The effect of puffing conditions on the physical properties and sensory evaluations of a puffed snack (ppeongtuigi) made of purple sweet potato flour was investigated. The snacks consisted of coated artificial rice with purple sweet potato flour with water, tempered to 7%, 9% and 11% moisture. The coated material was puffed at 236, 241, or $246^{\circ}C$ for 4, 5, or 6 s. The $L^*$ value decreased as the heating time increased. The $a^*$ and $b^*$ values, specific volume, and hardness increased with increasing heating temperature and heating time. Puffed snacks produced under conditions of higher moisture (7%), higher heating temperature ($246^{\circ}C$), or longer heating time (5 s) showed high scores for appearance, color, taste, and overall acceptability in sensory evaluations.
Keywords
purple sweet potato; purple sweet potato flour; pellet; puffed snack; purple sweet potato puffed snack;
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Times Cited By KSCI : 8  (Citation Analysis)
Times Cited By SCOPUS : 2
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