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KMID : 1134820070360111451
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Journal of the Korean Society of Food Science and Nutrition
2007 Volume.36 No. 11 p.1451 ~ p.1457
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Physicochemical Characteristics of Powder from Hot Air and Freeze Dried Leaves and Roots of Acorous calamus L.
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Beom Hee-Ju
Kang Dae-Jin
Lee Byung-Doo
Shon Jin-han
Im Ji Soon
Eun Jong-Bang
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Abstract
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The physical and chemical characteristics of powders from hot air and freeze dried leaves and roots of Acorous calamus L. were investigated. Two parts, upper and lower, of leaves, and two kinds of roots, 4 and 6 years old, were dried at 30 and 40℃, freeze?dried, and ground to make powder. Contents of moisture, ash, crude fat, and crude protein in freeze dried powder of upper leaf were 4.87%, 6.73%, 2.22%, and 3.57%, respectively. Water absorption index (WAI) and water solubility index (WSI) in freeze dried powder of lower and upper leaves were 8.476 and 0.077 g/㎖. Contents of chlorophyll a, chlorophyll b and total chlorophyll in freeze dried powder of upper leaves were 12.18, 16.86, and 29.11 ㎎/100 g, respectively. Contents of total and reducing sugar in freeze dried powder of 4 and 6 years roots were 111.89～119.21 ppm and 5.02～5.22 ppm, 109.92～114.65 ppm and 5.21～5.32 ppm. Contents of total polyphenols and flavonoids in freeze dried powder of upper leaf were 125.02 and 21.02 ㎍/㎎, respectively.
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KEYWORD
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Acorus calamus L., physicochemical characteristics, hot air drying, freeze drying
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