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Mathematical Modeling of Infrared Assisted Hot Air Drying of Ginger Slices


Affiliations
1 Central Institute of Fisheries Technology, Cochin (T.N.), India
2 Department of Food and Agricultural Process Engineering, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
     

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Infra-red assisted hot air drying studies were conducted on ginger slices of diameter 20±2.5 mm and thickness 5±0.5 mm. Drying experiments were executed under infra-red and hot air temperature of 60°C with two levels of air velocities: 0.8 m/s and 1.4 m/s. the drying rate was found to increase proportionately with the drying air velocity, thereby minimising the total drying time. Time taken for drying ginger slices from an initial moisture content of 442 per cent (d.b.) to a final moisture content of 8.4 per cent (d.b.) at 0.8 m/s air velocity was 300 min. Whereas, it took 210 min to lower the moisture content of ginger from 433.33 per cent (d.b.) to 6.67% (d.b.) under the drying air velocity of 1.4 m/s. Infrared drying temperature of 60°C in combination with air velocity of 0.8 m/s showed better results for quality evaluation with reduced drying times. Logarithmic model fitted the experimental data well for the whole range of temperatures (R2= 0.9989, RMSE= 0.0119 and λ2= 0.000140574).

Keywords

Infra-Red, Ginger Drying, Logarithmic Model, Moisture Ratio, Drying Rate.
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  • Afzal, T.M., Abe, T. and Hikida, Y. (1999). Energy and quality as-pects during combined FIR-convective drying of barley. J. Food Engg., 42 : 177-182.

  • Akpinar, E.K., Bicer, Y. and Yildiz, C. (2003). Thin layer drying of red pepper. J. Food Engg., 59 : 99–104.

  • Ayensu, A. (1997). Dehydration of food crops using a solar dryer with convective heat flow. Solar Energy, 59(4-6) : 121-126.

  • Chakraverty, A. (1988). Post harvest technology of cereals, pulses and oilseeds. Oxford & IBH Publ.New Delhi. ISBN: 8120402898 9788120402898.

  • Giri, S.K. and Prasad, S. (2007). Drying kinetics and rehydration characteristics of microwave-vacuum and convective hot air dried button mushrooms. J. Food Engg.,78 : 512-521.

  • Hall , A.S., Holowenko, A.R. and Laughlin, H.G. (1980). Theory and problems of machine design. Schaum’s outline series. McGraw – Hill International Book Company: Singapore. 113 – 130pp.

  • Hebbar, U.H., Vishwanathan, K.H. and Ramesh, M.N. (2004). Development of combined infrared and hot air dryer.J. Food Engg., 65 : 557-563.

  • Henderson, S.M. and Pabis, S. (1969). Grain drying theory.I. Temperature effect on drying co-efficient. J. Agric. Engg. Res., 6 : 169–174.

  • Hii, C.L., Law, C.L. and Cloke, M. (2009). Modelling using a new thin layer drying model and product quality of cocoa. J Food Engg., 90 : 191–198.

  • Hoque, M.A., Bala, B.K., Hossain, M.A. and BorhanUddin,M. (2013).Drying kinetics of ginger rhizome. Bangladesh J. Agric. Res., 38 (2) : 301-319.

  • Jayashree, E., Visvanathan, R. and Zachariah, J. (2014). Quality of dry ginger (Zingiber officinale) by different drying methods. J. Food Sci. & Technol., 51 : 3190-3198.

  • Mazza, G. and Lemaguer, M. (1980). Dehydration of onion: some theoretical and practical considerations. J. Food Technol., 15:181–194.

  • Midilli, A. (2001).Determination of pistachio drying behaviour and conditions in a solar drying system. Internat. J. Energy Res., 25 : 715–725.

  • Mongpraneet, S., Abe, T. and Tsurusaki, T. (2002). Accelerated drying of welsh onion by far infrared radiation. J. Food Engg., 55 : 147-156.

  • Page, G. (1949). Factors influencing the maximum rates of air drying shelled corn in thin-layer. M.S. Thesis, Purdue University West Lafayette, Indiana: USA.

  • Peter, F. and Ann, H. (1992). Small scale food processing. Intermediate Technology Publication, 103 – 105 Southampton Row, London WciB4HH, UK. 60-64pp.

  • Poernomo, A. (1986). Drying behaviour of salted sardines. I. Model fitting of drying curves. J. Post-Harvest Fisher. Res., 53 : 27–43.

  • Praveenkumar, D.G., Hebbar, U.H., Debnath, S.D. and Ramesh, M.N. (2005).Infrared and hot-air drying of onions.Jornalof FoodProcesing and Preservation. Pres., 29, 132-150.

  • Sundari, A. R.U., Neelamegam, P. and Subramanian, C. V. (2013). Study and analysis of drying characteristics of ginger using solar drier with evacuated tube collectors. Res. J. Pharmac. Biological & Chem. Sci., 4:1258–1267.

  • Verma, S.V.S. and Singh, R. (1985). Nutritional value of fermented guar meal for broilers. World Rev. Anim. Prod., 21: 47-50.

  • Wang, C.Y. and Singh, R.P. (1978). Use of variable equilibrium moisture content in modelling rice drying. Transac. ASAE, 11: 668 – 672.

  • Yaldiz, O., Ertekin, C. and Uzun, H. I. (2001). Mathematical modelling of thin layer solar drying of Sultana grapes. Energy, 26 : 457–465.

  • Zuggaramundi, A. and Lupin, H. M. (1980). A model to explain observed behaviour on fish salting. J. Food Sci., 45 : 1305– 1311.


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  • Mathematical Modeling of Infrared Assisted Hot Air Drying of Ginger Slices

Abstract Views: 686  |  PDF Views: 6

Authors

P. V. Alfiya
Central Institute of Fisheries Technology, Cochin (T.N.), India
S. Ganapathy
Department of Food and Agricultural Process Engineering, Tamil Nadu Agricultural University, Coimbatore (T.N.), India

Abstract


Infra-red assisted hot air drying studies were conducted on ginger slices of diameter 20±2.5 mm and thickness 5±0.5 mm. Drying experiments were executed under infra-red and hot air temperature of 60°C with two levels of air velocities: 0.8 m/s and 1.4 m/s. the drying rate was found to increase proportionately with the drying air velocity, thereby minimising the total drying time. Time taken for drying ginger slices from an initial moisture content of 442 per cent (d.b.) to a final moisture content of 8.4 per cent (d.b.) at 0.8 m/s air velocity was 300 min. Whereas, it took 210 min to lower the moisture content of ginger from 433.33 per cent (d.b.) to 6.67% (d.b.) under the drying air velocity of 1.4 m/s. Infrared drying temperature of 60°C in combination with air velocity of 0.8 m/s showed better results for quality evaluation with reduced drying times. Logarithmic model fitted the experimental data well for the whole range of temperatures (R2= 0.9989, RMSE= 0.0119 and λ2= 0.000140574).

Keywords


Infra-Red, Ginger Drying, Logarithmic Model, Moisture Ratio, Drying Rate.

References