Raw Material Pre‐treatment hian Freeze‐Dried Product Quality a nghawng dan

Vacuum freeze‐drying hian dehydration mode a tichiang a, chutih rualin pre‐treatment hian sorting, cleaning, cutting, blanching, enzyme inactivation leh quick freezing te a huam a ni. Step tin hi final product-ah a lang vek ang. Raw material thlan leh sorting hi a hmasa ber a ni. Raw materials puitlin dan, a tharna leh a chhiatna℃hian finished‐product quality upper limit chu direct-in a rel a ni. Processing hmain a rotten leh bruised part te chu lakchhuah hmasak phawt tur a ni. Faina dik lo chuan bawlhhlawh awmsa a rawn keng tel ang a, end products-te sanitation index a nghawng dawn a ni. Cutting specification pawh a pawimawh hle. Thil thick lutuk hian drying cycle a ti rei a, dehydration inang lo a thlen a; over‐thin slices te hi a tlem a, a inthen awlsam hle. Plant‐based raw materials tan chuan blanching leh enzyme‐killing treatment hi ngaihthah theih a ni lo. Blanching dik tak hian oxidase activity a titawp a, freeze‐drying leh storage laiin browning a veng tha hle. Enzyme inactivation tha tak a awm loh chuan product te hi perfect freeze‐drying hnuah pawh colour darkening leh flavor deterioration an nei awlsam hle. Pre‐freezing link hi pre‐treatment-ah pawh a tel ve bawk. Freezing temperature leh freezing speed dik lo chuan ice crystal lian lutuk a siam ang a, materials chhungril tissue structure a tichhia ang a, chu chuan brittleness leh shrinkage tha lo tak a thlen ang. Production hlawhchhamna tam tak hi freeze‐dryer malfunction vang a ni lo. Pre‐treatment process tihchangtlun hian product yield nasa takin a ti tha thei a, ei tur siamtute tan production loss a ti tlem thei bawk.