The invention discloses a lotus root
starch manufacturing technology based on complete utilization of
lotus root. The technology comprises the following steps: washing fresh
lotus roots, peeling,
grinding, then soaking the lotus roots in a color fixing solution, adding pectase,
cellulase and glucoamylase to carry out
enzymatic hydrolysis, squeezing the
mixed solution obtained after the
enzymatic hydrolysis with a frame squeezer so as to obtain
lotus root juice and
lotus root dreg, carrying out vacuum condensation on the
lotus root juice with a double-effect externally-heated vacuum
evaporator so as to obtain lotus root condensed juice, adding lotus seed
polysaccharide and lotus leaf
flavones into the lotus root condensed juice, and
freeze drying so as to obtain the lotus root juice
powder;
vacuum drying the lotus root dreg, then carrying out a
superfine grinding process on the dried lotus root dreg so as to obtain the lotus root dreg
powder; mixing the lotus root juice
powder and the lotus root dreg powder, carrying out a
microwave sterilization treatment on the mixed powder, and packing so as to obtain the lotus root
starch. The technology utilizes composite
enzyme to carry out
enzymatic hydrolysis, improves the juice yield; individually processes the lotus root juice and the lotus root dreg, finally mixes the lotus root juice powder and the lotus root dreg powder, thus the original nutrients in lotus root can be maximally preserved, and the
nutrient recovery rate is high.