Cicer a-galactosidase was immobilized onto functionalized graphene with immobilization efficiency of
84% using response surface methodology (Box–Behnken design). The immobilized enzyme had higher
thermal stability than the soluble one, attractive for industrial applications. Immobilization of the
enzyme lowered the Km to 1/3rd compared to the soluble enzyme. Raffinose family oligosaccharides
(RFOs) are mainly responsible for flatulence by taking soybean derived food products. The immobilized
enzyme can be used effectively for the hydrolysis of RFOs. After ten successive runs, the immobilized
enzyme still retained approximately 60% activity, with soybean RFOs. The easy availability of enzyme
source, ease of its immobilization on matrices, non-toxicity, increased stability of immobilized enzyme
and effective hydrolysis of RFOs increase the Cicer a-galactosidase application in food processing
industries.