灵芝
化学
水分
食品科学
保质期
含水量
干果
防腐剂
灵芝
工程类
有机化学
岩土工程
作者
Siew Kian Chin,Chung Lim Law,Christina Vimala Supramaniam,Poh Guat Cheng
标识
DOI:10.1080/07373930902904350
摘要
Ganoderma is normally dried to extend its shelf life without using chemical preservative and to concentrate the medicinal value in the fruiting body. Convective hot air drying characteristics of Ganoderma tsugae Murrill were evaluated in hot air circulated oven at different drying temperatures, sizes, and air flow rates. The drying kinetics of Ganoderma tsugae in kidney shape and slices were investigated and compared at different drying conditions. The variation of effective moisture diffusivity values at decreasing moisture contents during drying was determined from the drying data. Four well-known thin-layer drying models were fitted to the experimental data and the Midilli model was found to satisfactory describe the drying characteristics of kidney-shaped Ganoderma tsugae. Ganoderma tsugae dried at 50°C with air velocity of 1.401 ms−1 showed the highest retention of crude ganoderic acid content compared to other drying conditions.
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