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KMID : 0380620140460060769
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Korean Journal of Food Science and Technology
2014 Volume.46 No. 6 p.769 ~ p.772
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Effects of Drying Temperature on the Saponin and Free Sugar Contents of Platycodon grandiflorum Radix
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Lee Byung-Jin
Cho Young-Son
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Abstract
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This study was conducted to provide basic information on the effects of drying temperatures (45, 65, and 85oC) on saponins and free sugar contents of a 5-year-old Platycodon grandiflorum Radix. Platycodin D levels decreased with increase in drying temperature (956, 334, and 197 mg% at 45, 65, and 85oC, respectively). Polygalacin D levels were the highest at 45oC (577 mg%), while platycodin D3 and deapioplatycodin D were high at 65oC (304 and 272 mg%, respectively). Sucrose levels were 3,825 mg% at 85oC and 1,226 mg% at 45oC, and decreased when the drying temperature was decreased. The sucrose content showed significant negative correlation with saponin levels in dried P. grandiflorum (?0.987**, p<0.01). These results suggested that dryingP. grandiflorum at low temperatures is more economically viable.
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KEYWORD
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drying temperature, free sugar, Platycodon grandiflorum, saponin
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