Standard raw material pre-treatment is the foundation of high-quality food lyophilization finished products; improper pre-processing will cause uneven drying, extended operation time and poor appearance of food after freeze dryer processing.
Solid fruit and vegetable raw materials for industrial freeze dryer need cleaning, peeling, slicing to uniform thickness before freeze-drying, consistent slice thickness ensures synchronous ice sublimation inside vacuum freeze dryer cavity.
Fresh meat and aquatic products need washing, dewatering and even cutting into uniform blocks or fillets, avoiding overly thick raw material leading to incomplete lyophilization inside core parts.
Herbal slices and natural spices should be cleaned and evenly spread without agglomeration before putting into freeze drying machine, clustered materials will trap moisture and form under-dried areas after freeze-drying.
High-sugar fruits, sticky herbal extracts and high-fat meat raw materials need independent pre-freezing treatment before loading into industrial lyophilizer, shortening the pre-freezing time inside vacuum freeze dryer.
Mastering standardized food raw material pre-treatment flow can shorten overall freeze-drying cycle by 20%, raise finished product qualification rate and reduce unnecessary power consumption of freeze dryer equipment.
