Optimization of Osmotic Drying Parameters for Button Mushroom (Agaricus bisporus)

Birendra Kumar Mehta, Sanjay Kumar Jain, Gyanendra Prakash Sharma, Vishvambhar Dayal Mudgal, Radha Charan Verma, Anila Doshi, Hemant Kumar Jain

Department of Processing and Food Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur, India.

DOI: 10.4236/am.2012.330186                

Abstract

Response surface methodology was used to investigate the effect of brine concentration (10% - 20%) solution temperature (35℃ - 55℃), and duration of osmosis (30 - 60 min) with respect to water loss (WL) and salt gain (SG). The solu- tion to sample ratio of 5/1 (w/w) was used. The Box-Behnken design of three variables and three levels including seventeen experiments formed by five central points were used for optimizing input parameters. Linear, quadratic and interaction effects of three variables were analyzed with respect to water loss and solid gain. For each response, second order polynomial models were developed using multiple regression analysis. Analysis of variance (ANOVA) was per- formed to check the adequacy and accuracy of the fitted models. The response surfaces and contour maps showing the interaction of process variables were constructed. The optimum operating conditions were: solution temperature 44.89℃, brine concentration of 16.53 per cent and duration of osmosis of 47.59 min. At this optimum point, water loss and salt gain were predicted to be 44.55 per cent and 2.98 percent respectively.

Keywords

Button Mushroom; Osmotic Dehydration; Optimization; Response Surface Methodology; Water Loss; Salt Gain

Conflicts of Interest

The authors declare no conflicts of interest.

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