Ohmic heating can be suitably used for production of acceptable yellowish coloured ginger paste. Electrical conductivity increases and time of heating decreases with increasing salt level of ginger paste. Temperature of 80 C is sufficient for ohmic heating of ginger paste. Microbial load is negligible in ohmically treated ginger paste for all the combinations of salt levels and voltage gradients. Ohmic heating treatment keeps the pH and TSS of ginger paste well within the acceptable range. Optimization of process parameters indicates that the optimum conditions of voltage gradient, salt level...

Carrot is one of the important root crops cultivated throughout the world for freshly edible roots.. Drying is the most important method for preservation of carrots with an ultimate aim of improving storability by reducing its moisture content. Total drying time considerably reduced with increase in drying temperature from 55 to 75 0C. The constant rate period was found to be absent, only falling rate period was observed in all the experimental conditions. The Page model described the drying behavior of carrot cubes satisfactorily. The rehydration ratio increased with increased drying...

Green chilli (Capsicum annuum L.) is perishable and deteriorates after harvesting; hence there is need to apply an appropriate post harvest technology to prolong the shelf life of the green chilli. The Exponential model described the drying behaviour of green chilli satisfactorily. Drying time, dehydration ratio, carotene, chlorophyll, and color were taken as dependent variables in the study. The moisture of fresh green chilli varied from 523.17 to 871.31 % (d. b.) while moisture content of dried green chilli was in the range of 44.48 to 5.38% (d. b.). Total drying time ranged between 150 to...