2nd eureca2014 drying kinetics of medicinal herbs vacuum microwave drying vm 100g of herbs were subjected to a vacuum microwave dryer sm 200 plazmatronikapoland that had a revolving vacuum drum with radius of 018m and length of 027m two magnetrons of 1200w the power is adjustable the drying experiments were performed at 480w with. Drying was performed at a temperature of 43 c and relative humidity of 11 48 a similar air temperature was used in the drying of medicinal herbs in a study conducted by tambunan et al 1 . In this review article the various drying characteristics of medicinal herbs were studied and the quality of the dried products assessed comparison of the different drying protocols such as air drying microwave drying sun drying combined convective and microwave drying infra red drying freeze drying etc are done taking into account . Microwave drying characteristics of coriander leaves at various power outputs were investigated in the present study due to the fact that these informations are needed in designing and modelling heat and mass transfer processes during storage and other possible operations in food and chemical industry. Pdf purpose of review microwave energy can dramatically enhance drying of medicinal and aromatic plants save energy and preserve product quality if properly applied in combination with hot air
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