Huoshi Machinery Manufacturing Hebei Co., Ltd.

Continuous Hot Air Puffing System

The oil free RTE foods are of more demand amongst health conscious demography and are free from contaminations and are having higher shelf lives. In order to overcome the drawbacks of existing LPG operated batch type hot air puffing system, the Continuous Hot Air puffing system operated using electrical heaters was fabricated. The developed continuous hot air puffing system was found safe and easy to operate. The continuous hot air puffing system enables continuous feeding of raw material and continuous exit of puffed product, hence frequent resetting of temperatures and air velocities is no more required. The continuous hot air puffing system has the five to six folds increased capacity over existing batch type hot air puffing systems besides reduced requirement of energy due to re circulation of used hot air. The continuous hot air puffing system can be set to any puffing temperature from 175 to 300 °C and air velocity of 2.5 to 6 m/s.

The moisture content and protein content of fryums were observed to reduced due to hot air puffing as compared to raw material and air puffed fryums are found to be free of oil.