As a further consequence, blanching also lowers somewhat the mass of vegetables, so the process profitability can be affected by over treatment. Commercial blanchers used in the vegetable canning industry are relatively intensive in energy
and water consumption. Energy utilization is affected by the equipment used and also by the configuration of the following freezing step.Furthermore, conventional blanching produces wastewater which can reduce the nutritional value of vegetables by leaching of soluble compounds, and subsequently increase the pollutant charge