A Production of Crocodylus Blood Powder by Vacuum Freeze Dryer Method

Abstract

An experimental dryer was developed to determine the characteristics of crocodile blood powder that product from vacuum freeze-drying processes on continuous production. The equipment was consisted of 4 main parts; drying chamber, freezing process, vacuum process and heating process. Drying chamber consists of 6 rectangular stainless steel trays with 250x400x20 mm; freezing process consists of compressor with 1 tons, evaporator unit, condensing unit and expansion valve unit; vacuum process consist of vacuum pump with the capacity of 5x10-4 torr and heating process with 4 sets of 2.5 kW heating plate. The experimental process consists of two process, freezing process (the air blast freezer type) and freeze-drying process (tray method with heating plate type). The temperature of the crocodile blood  were measured from 25ºC until it reached to 30ºC for the three type case studies of freezing temperature were -20, -25 and -30ºC and were continuously recorded during each test.

The result was found that this experimental dryer can produce crocodile blood powder two process, freezing and freeze-drying process by separation hemoglobin and plasma showed that the freezing temperature was approximately about -20 ºC with and the freezing-drying time was approximately about 1,080 min for hemoglobin and 810 min for plasma. The chemical analysis of crocodile blood powder was found that; anti-bacteria condition, anti - oxidant, free radical, peptine  toxication and the physical analysis of color, crystallized were good. While the color  were tend to red and crystallized were bigger when compared with another produce crocodile blood powder solution. The experimental dryer on continuous production can efficiently achieve the sensible result. However, more research is required to study the effects of the production costs, a long time period of properties, for make sure that this method was capable of being use for manufacturing scale an alternative nutrient food in the future.