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http://dx.doi.org/10.3746/jkfn.2002.31.2.236

Studies on Characteristics of Ostrich Egg Shell and Optimal Ashing Conditions for Preparation of Calcium Lactate  

고민경 (대구가톨릭대학교 식품공학과)
노홍균 (대구가톨릭대학교 식품공학과)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.31, no.2, 2002 , pp. 236-240 More about this Journal
Abstract
Characteristics of ostrich egg shell and optimal ashing conditions for preparation of calcium lactate were investigated. Average weight, girth, and length of ostrich egg shell with membrane (OESM) were 255.17 g, 39.50 cm, and 15.20 cm, respectively. Ostrich egg shell without membrane (OES) contained 0.35% moisture, 40.98% Ca as a maior mineral, 2.43% protein, and 235.0 mg/100 g of amino acids. Optimal ashing times for preparation of white-colored ashing powder from OES were 12 hr at $700^{\circ}C$, 80 min at 80$0^{\circ}C$, and 15 min at 90$0^{\circ}C$, respectively. These ashing conditions resulted in ashing powder with yields of 54.5~54.6% and color values of 97.26 ~97.51 for $L^{*}$, -0.30~-0.34 for $a^{*}$, and 0.63~0.98 for $b^{*}$. Ashing powders, from three different particle size ranges of OES, did not show significant differences in yield.eld.d.
Keywords
ostrich egg shell; characteristics; ashing powder; calcium lactate;
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Times Cited By KSCI : 1  (Citation Analysis)
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