THIN LAYER DRYING 0F WATERMELON SEEDS (Colocynthis Citullus)

Document Type : Original Article

Authors

1 Assoc. Prof., Ag. Eng. Dept., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

2 Lect., Ag. Eng. Dept., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

Abstract

This research aims to the determination of the optimum temperature and air velocity required for drying a thin layer of watermelon seeds (Colocynthis Citullus). For sitting up of these seeds for snapping. Watermelon seeds were dried under four temperatures which are: 40, 50, 60 and 70 oC. Under each drying temperature, four air velocities were tested. These velocities are: 0.5, 1, 1.5 and 2 m/s. drying time was 7 h for all treatments. The drying rate constant “k” (min-1) was calculated for each of the previously mentioned treatments. The study concluded to that The greatest value of "k" is at 50 oC drying temperature and 2 m/s drying velocity and calculated to be 0.0123 min-1.

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References

Brooker, D . B., F . W. Baker  Arkema and  C . W .Hall ( 1978 ). Drying cereal grian 2nd  Edition AVI publishing Co., Westport,  Conn., INC., USA
Brubai W., A. J. Akor, A. H. Igoni and Y. T. Puyate (2008). Fracture resistance of African nutmeg (Monodora myristica) to compressive loading. Am – Eurasian J. of Sci. Res. 3(1): 15-18.
Doymaz, I. ( 2005). Drying behaviour of green beans Journal of Food Engineering 69: 161- 165.
Hall, W. H. (1980). Drying and storage of agricultural crops. AVI Pub. Co.: 129.
 Karathanos, V . T and Belessiotis, V . G . ( 1997). Sun and artificial air drying kinetics of some agricultural products, J. Food Engineering 31 : 35 – 46.
Krokida, M. K. and Marinos – kouris, D. ( 2003). Dehydration kinetics of dehydrated products – Journal of Food Engineering 57 : 1 – 7.
Li, H. and R. V . Morey ( 1984 ). Thin – layer drying of yellow dent corn. Trans.  ASAE: 581 – 585.
Ministry of Agriculture and Land Rec. Statistical year Book
Oyenuya, V . A .and Fetuga, B . A . ( 1975 ) Some aspects of biochemistry and nutritional value of water melon .Journal of the science of food and Agriculture, 26 ( 6): 843 – 854.
Silayo, V. C. K. (1995). Sun drying of Grains. Univ. of Newcastle – Upon-tyne, Uk. Ph. D. Thesis.   
Togrul, I. T. and Pahlivan. D. (2002). Mathematical modeling of solar drying of apricots in thin layers. J. Food Eng. , 55, 209 : 216

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