The invention provides a method for
processing an instant dried sweet potato, which comprises the following steps of: carrying out storage and saccharification pretreatment on a fresh sweet potato; cleaning the sweet potato, removing the peel of the fresh sweet potato and
cutting the sweet potato into strips;
blanching for 15-30 seconds; leaching; adding 1-3 percent by
mass of honey;
steaming for 30-45 minutes in steam;
drying to the
water content of 32-36 percent at 60-70 DEG C in
microwave vacuum; adding 0.2-0.4 percent by
mass of mountain
naphthalene oil;
steaming for 15-30 minutes in steam;
drying to the
water content of 14-18 percent at 50-60 DEG C in
microwave vacuum; storing and dampening to the
water content of 20-24 percent at 4-8 DEG C in a
refrigeration house; and carrying out
microwave sterilization at 30-40 DEG C for 3-6 minutes; and packaging in vacuum. By adopting the
processing method of the invention, the produced instant dried sweet potato has flexible texture and certain
toughness and can be chewed by all people regardless of
age and sex; the product has uniform color, presents red gloss and has the potato
flavor deserved by the variety, palatable
sweetness, no any
food additive, short vacuum microwave
drying time and less loss of
nutrition components; the product has the normal temperature quality guarantee period for 9 months and the
refrigeration quality guarantee period for 12 months; the
quality standard of the product meets the following condition: the total bacterial amount is not more than 1,000 CFU / g, the mould is not more than 50 CFU / G, the
escherichia coli is not more than 30 MPN / 100g, and
pathogenic bacteria are not detected; in addition, the energy consumed for producing the instant dried sweet potato is reduced by more than 30 percent compared with the energy consumed for producing the instant dried sweet potato by hot
air drying.