3. Results and discussion
3.1. Effect of enzyme pre-treatment on yield of oleoresin and gingerol
The enzyme concentration of 0.5% was found to afford optimal
results both in terms of oleoresin and gingerol yields. The oleoresin
yield was higher (20–21%) on pre-treatment of ginger with cellulase,
amylase, pectinase and viscozyme enzymes at 0.5% concentration
followed by extraction with acetone (Table 1). The gingerol
content in these resins obtained from enzyme treatment was in
the range of 10.1–12.2%. The comparative yield of resin and gingerol
content obtained from ginger without enzyme pre-treatment