The Development of Ginger Drying Using Tray Drying, Heat Pump–Dehumidified Drying, and Mixed-Mode Solar Drying

Mature ginger was pretreated by soaking in citric acid prior to drying in a single layer in a tray and heat pump dehumidified dryer at three temperatures of 40, 50, and 60°C and in a mixed-mode solar dryer at 62.82°C and a radiation intensity of 678 W/m2. The drying data were applied to the modified Page model. Diffusivities were also determined using the drying data. Quality evaluation by color values, reabsorption, and 6-gingerol content showed best quality for ginger with no predrying treatment and dried at 40°C in a heat pump–dehumidified dryer. At drying temperature of 60 to 62.82°C, no pretreated dried ginger from mixed-mode solar dryer provided the shortest drying time and retained 6-gingerol as high as heat pump–dehumidified dryer.

[1]  S. Prasertsan,et al.  Condenser Coil Optimization and Component Matching of Heat Pump Dryer , 2007 .

[2]  Mohammad Nurul Alam Hawlader,et al.  Comparison of the Retention of 6-Gingerol in Drying of Ginger Under Modified Atmosphere Heat Pump Drying and other Drying Methods , 2006 .

[3]  N. Mohsenin Physical properties of plant and animal materials , 1970 .

[4]  J. L. Woods,et al.  The selection of sorption isotherm equations for wheat based on the fitting of available data , 1994 .

[5]  Atul Sharma,et al.  Solar-energy drying systems: A review , 2009 .

[6]  F. J. Francis,et al.  Food Colorimetry: Theory and Applications , 1975 .

[7]  S. Prasertsan,et al.  Heat pump drying of agricultural materials , 1998 .

[8]  Siaw Kiang Chou,et al.  CONVECTIVE DRYING OF AGRICULTURAL PRODUCTS. EFFECT OF CONTINUOUS AND STEPWISE CHANGE IN DRYING AIR TEMPERATURE , 2001 .

[9]  Md. Khalid Khan,et al.  Calculation Steps for the Design of Different Components of Heat Pump Dryers Under Constant Drying Rate Condition , 2008 .

[10]  Y. Shukla,et al.  Cancer preventive properties of ginger: a brief review. , 2007, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[11]  S. Phoungchandang,et al.  Kaffir Lime Leaf (Citrus hystric DC.) Drying Using Tray and Heat Pump Dehumidified Drying , 2008 .

[12]  Ingvald Strømmen,et al.  A SIMULATION MODEL FOR HEAT PUMP DRYER PLANTS FOR FRUITS AND ROOTS , 1997 .

[13]  Milio Alves-Filho,et al.  The Application of Heat Pump in Drying of Biomaterials , 1996 .

[14]  Somchart Soponronnarit,et al.  MATHEMATICAL MODEL DEVELOPMENT AND SIMULATION OF HEAT PUMP FRUIT DRYER , 2000 .

[15]  John R. Whitaker,et al.  The biochemistry and control of enzymatic browning , 1995 .

[16]  O. Headley,et al.  High pressure liquid chromatographic analysis of the main pungent principles of solar dried West Indian ginger (Zingiber officinale Roscoe) , 1998 .

[17]  Arun S. Mujumdar,et al.  A Control Strategy for a Chemical Heat Pump Dryer , 2005 .

[18]  Trygve Magne Eikevik,et al.  Kinetics and Mass Transfer during Atmospheric Freeze Drying of Red Pepper , 2007 .

[19]  A. S. Mujumdar,et al.  A Study of Coupled Heat and Mass Transfer in Composite Food Products during Convective Drying , 2007 .

[20]  A. Mujumdar,et al.  Osmotic Dehydration Pretreatment in Drying of Fruits and Vegetables , 2003, Proceeding of Proceedings of Symposium on Energy Engineering in the 21st Century (SEE2000) Volume I-IV.

[21]  J. Batsale,et al.  MEASUREMENT ERRORS PROCESSING BY COVARIANCE ANALYSIS FOR AN IMPROVED ESTIMATION OF DRYING CHARACTERISTIC CURVE PARAMETERS , 2002 .

[22]  J. L. Woods,et al.  Moisture Diffusion and Desorption Isotherms for Banana , 2000 .

[23]  Trygve Magne Eikevik,et al.  Single- and Multistage Heat Pump Drying of Protein , 2008 .

[24]  S. Bhattarai,et al.  The stability of gingerol and shogaol in aqueous solutions. , 2001, Journal of pharmaceutical sciences.