Author(s):

Gursimran Singh Sangha and Tarsem Chand Mittal

Abstract: An innovative turmeric boiling system based on utilization of steam for curing of turmeric was developed to reduce the fuel requirement, support in steam saving and reduce the overall time and labor requirement for turmeric processing. A mild steel pressure vessel was designed and developed to hold around 150 kg raw turmeric rhizomes. The fabricated pressure vessel was connected to a steam boiler by means of steam pipe for curing raw rhizomes. The developed vessel comprised of loading mechanism, unloading mechanism, pressure gauge, safety valve, steam release valve along with steam distribution system for uniform spreading of steam within the pressure vessel. The developed system was run with optimized conditions of steam pressure and holding time (16 psi & 1.10 minutes) for processing raw turmeric rhizomes. It was found that turmeric powder with maximum recovery (19.44%), color characteristics (L=53.65, a=15.42, b= 38.34) and maximum volatile oil (6.39%), curcumin content (4.18%) and oleoresin content (13.99%) was obtained using the innovative turmeric boiling system.

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