Hydrolysis of macroalgae using heterogeneous catalyst for bioethanol production

► Eucheuma cottonii which has no lignin is a potential feedstock for ethanol production. ► Amberlyst 15 was explored as a potential catalyst to hydrolyze carbohydrate from macroalgae. ► Yield of galactose obtained using Amberlyst 15 is superior as compared to H2SO4.