In the present work the drying characteristics and proximate analysis of
turkey berry (Solanum torvum) were analyzed under open sun drying and
greenhouse drying with two different glazing materials (UV Polyethylene
sheet and Drip lock sheet) under passive and active modes. The drying rate
under different modes of drying are 18.73g/h in drip lock greenhouse active
mode,12.50 g/h in UV polyethylene sheet greenhouse active mode,15.22 g/hin
drip lock sheet greenhouse passive mode, 11.84 g/h in UV polyethylene sheet
greenhouse passive mode and 10.65 g/h in open sun drying. Twelve
mathematical models were chosen to determine the drying characteristics of
Turkey berry. From the statistical analysis it is found that Modified
Henderson and Pabis model is the best drying model describing thin layer
drying characteristics of turkey berry in both open sun drying and green
house drying. The goodness of the fit achieved is based on the values of
coefficient of determination(R2), sum square error(SSE), root mean square
error(RMSE) and reduced chi square (?2).From the proximate analysis of dried
turkey berry it is found that more amount of carbohydrate is retained in UV
polyethylene greenhouse dryer under passive mode. In drip lock greenhouse
dryer under passive mode the retention of vitamins such as protein, vitamin
C and ash content showed a positive sign. In drip lock greenhouse dryer
under active mode the retention of calcium, iron and dietary fibre is found
to be high. Finally it is observed that more amounts of nutrients are
retained in greenhouse drying than in open sun drying.
Mathematical modeling of thin layer drying characteristics and proximate analysis of turkey berry (Solanum torvum)
