Optimization of Vacuum Frying Parameters in Combination with Osmotic Dehydration of Kiwi Slices to Produce Healthy Product

Authors

Abstract

Osmotic dehydration under discontinuous reduced pressure is one of the new methods of preparation fruits and vegetable processing with in view of good health. Processing of foods at high temperatures used to cook them can cause the formation of carcinogenic substances like acrylamide, and this risk remains even if the trans-fat is removed. The low temperatures employed in this method resulted in the products with the desired texture, nutritional, and colour. The purpose of this research was evaluation of the variable effects of osmotic dehydration process (ambient pressure, contact time of product and solution, concentration and temperature of osmotic solution) on the quality factors of product (colour changes, texture, moisture, oil uptake, and water loss to solid gain ratio) and achieving the optimum process conditions. Studying the quality parameters of the product, the temperature range of osmotic solution, pressure, concentration of the osmotic solution and contact time of product and solution were assumed as 30 to 50°C, 500 to 700 mbar, 30 to 50% and 60 to 180 min, respectively. The test plans involving 31 tests were obtained by using response surface statistical models and central composite design. They were fried at the condition of 108ºC, 8 min and 320 mbar by using statistical correlations, 48.71ºC for the osmotic solution temperature, 592.07 mbar for the pressure, 62.92 min for the time and 34.87% for the osmotic solution. Concentrations were obtained as optimum conditions of osmotic dehydration of kiwi slices under reduced pressure. In summary combination of osmotic dehydration and vacuum frying improved the quality of the final fried kiwi, so this method is recommended for production of healthy products.

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References

  1. Maadyrad A., GhiassiTarzi B., Bassiri A., Bamenimoghadam M.,2010. Process Optimization in Vacuum Frying of Kiwi Slices Using ResponseSurface Methodology Journal of Food Biosciences and Technology. 1: 33-40.
  2. Singh B., Kumar A., Gupta A. K., 2005. Study of mass transfer kinetics andeffective diffusivity during osmoticdehydration of carrot cubes, Journal of FoodEngineering, 79 (2), 471-480.
  3. Correa J.L.G., Pereira L. M, Vieira G. S., HubingerM.D., 2010. Mass transfer kinetics of pulsed vacuum osmotic dehydration of guavas.Journal of food engineering.96:498-504.
  4. OzdemirM., Ozen B. F., Dock L. L.,Floros J.D., 2008. Optimization of osmoticdehydration of diced green peppers byresponse surface methodology, Food Scienceand Technology, xx: 1-7
  5. Ertekin F.K., Sultanolu M., 2000. Modeling of mass transfer during osmotic dehydration of apples. Journal of Food Engineering. 46 (4): 243-250.
  6. Martinez Valencia B., Abu Archila M., Cabrera A., Lagunes A., 2011. Pulsed vacuum osmoticdehydration kinetics of melon (Cucumismelo L.)var.cantaloupe.African journal of agricultural research. 6(15):3588-3596.
  7. AOAC.1984.Official methods of analysis.14th ed. Association of official analytical chemists,Washington,DC,USA.
  8. Khin M.M.,Zhou W., PereraC., 2005. Development in the Combined Treatment ofCoating and Osmotic dehydration of Food.
  9. AOCS. 1997. Official Methods and Recommended Practices of the AOCS. 5th ed. The American Oil Chemistsââ‚‌™ Society Champaign, IIlinois.
  10. Krokida M. K., Karathanos V. T., Maroulis Z.B.,Marinos-Kouris D., 2000. Effect of osmotic dehydration on color and sorption characteristics of apple and banana.Drying Technology. 18: 937-950.
  11. Emamjome Z., Alaeddini B., 2005, improvement of quality factors of dried kiwi and it formulation with osmotic dehydration as pretreatment. 36(6): 1421-1427
  12. Kalbasi A., Fatemian H., 2001. Effect of osmotic dehydration properties on quality factorLebanesyellow applebract, agriculture science journal. 31(4):24-31
  13. Kaymak-Ertekin F., Sultanolu M., 2000.Modelling of mass transfer during osmotic dehydration of apples. Journal of food Engineering.46 (4):243-250.
  14. Telis V. R. N.,Murari R. C. B. D. L. F.,Yamashita b., 2003.Diffusion coefficients during osmotic dehydration of tomatoes in ternary solutions.Journal of Food Engineering.61:253-257.

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History

  • Receive Date: 20 April 2014
  • Revise Date: 15 June 2021
  • Accept Date: 29 October 2018

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