19-08-2014, 10:29 AM
The whey generated during the processing of buffalo milk into Shrikhand and Paneer is usually drained off imposing serious pollution problem due to high chemical oxygen demand (COD). Whey contains around 4-5 % and 0.5 % (w/v) lactose and whey proteins respectively and if recovered will not only reduce the COD load of the discarded whey but also add substantially add to the economy of the industry.
The whey generated during the processing of buffalo milk into Shrikhand and Paneer is usually drained off imposing serious pollution problem due to high chemical oxygen demand (COD). Whey contains around 4-5 % and 0.5 % (w/v) lactose and whey proteins respectively and if recovered will not only reduce the COD load of the discarded whey but also add substantially add to the economy of the industry.
The main objective of the present work was to develop a scaled up bench top continuous process for recovery of the proteins and lactose from whey, the process parameters for which where already optimized at lab scale. Different aspects important in terms of scaling up of the process such as batch kinetics and effect of agitation on size distribution as well as kinetics was studied for both heat induced deproteination and anti-solvent based lactose crystallization. Both processes were also tried under continuous condition, and effect of different residence time and agitation on conversion was studied.
Sonocrystallization of lactose for rapid recovery was also tried in both batch and continuous process.