
Keywords: Blackgram; Idli; Raffinose family oligosaccharide; Response surface methodology; Soaking; Acetonitrile (PubChem CID: 6342); Lactic acid (PubChem CID: 612); Petroleum ether (PubChem CID: 241); Raffinose (PubChem CID: 10542); Sodium hydroxide (PubChem CID: