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Effects of Anticaking Agents on the Physicochemical Properties of Freeze-dried Kiwifruit Powders  

Oh, Hyun-Jeong (Biotechnology Regional innovation center, Jeju National University)
Lim, Ja-Hun (Biotechnology Regional innovation center, Jeju National University)
Lee, Ju-Yeon (Biotechnology Regional innovation center, Jeju National University)
Oh, Young-Ju (Dept. of Hotel Culinary Arts, Cheju Halla University)
Lim, Sang-Bin (Dept. of Food Bioengineering, Jeju National University)
Publication Information
Culinary science and hospitality research / v.20, no.1, 2014 , pp. 178-188 More about this Journal
Abstract
Two kinds of anticaking agents (dextrin, polydextrose) were combined with kiwifruit paste at 5% w/w ratio and freeze-dried to prepare a powdered material. The physiochemical characteristics of kiwifruit powders with anticaking agents were compared with those without anticaking agents as the control. The yield was higher in the powders with anticaking agents than the control. Moisture content, acidity, and total phenolics were lower in the powders with anticaking agents than the control. The contents of vitamin C was higher in the powders with anticaking agents than the control, but was no significant difference with different anticaking agent types. There were no significant differences in free sugar content (fructose, glucose, total sugar) and organic acid content (oxalic acid, lactic acid, total) depending on the anticaking agent types. Hunter's L-value was significantly high in the order of the samples with dextrin, the control, and polydextrose, while a-value showed an opposite tendency. Browning index, water solubility, and swelling power didn't show any significant difference. However, the hygroscopicities with elapsed time were lower in the powders with anticaking agents than the control. Therefore, the kiwifruit powder combined with dextrin or polydextrose as an anticaking agent at 5% w/w ratio could be used as a food biomaterial with a good quality in moisture, vitamim C, color value, browning index, water solubility, and hygroscopicity.
Keywords
freeze-dried kiwifruit powder; anticaking agent; dextrin; polydextrose; physiochemical charateristics;
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