冷冻干燥制品的正确制备过程是
2023-07-01
A.预冻→测定产品低共熔点→升华干燥→再干燥
B.预冻→升华干燥→测定产品低共熔点→再干燥
C.测定产品低共熔点→预冻→升华干燥→再干燥
D.测定产品低共熔点→升华干燥→预冻→再干燥
E.测定产品低共熔点→干燥→预冻→升华再干燥
参考答案:C
B.预冻→升华干燥→测定产品低共熔点→再干燥
C.测定产品低共熔点→预冻→升华干燥→再干燥
D.测定产品低共熔点→升华干燥→预冻→再干燥
E.测定产品低共熔点→干燥→预冻→升华再干燥
参考答案:C
冷冻干燥制品的制备过程为:测定产品低共熔点→预冻→升华干燥(一次升华法或反复预冻升华法)→再干燥,所以答案为C。
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