Bachtiar, N.A. and Sarmidi, Mohamad Roji (1997) Spray drying as the alternative method for production of tropical fruit powder. In: Regional Symposium on Chemical Engineering 1997 in conjunction with 13th Symposium of Malaysian Chemical Engineers, 13-15 October 1997, Hyatt Regency, Johor, Malaysia.
Mango puree was encapsulated with gum arabic using a laboratory scale spray dryer at inlet and outlet air temperatures ranging from 160 degree C to 220 degree C and 79 degree C to 110 degree C respectively. A preliminary drying run was done at 160 degree C inlet and 106 degree C exit air temperatures with a flow rate of 900 ml/hr using the laboratory scale spray dryer. The temperature and flow rate were adjusted until a high product yield with low moisture content is achieved. Optimum operating condition for spray drying of mango puree using a laboratory scale spray dryer were at a flow rate of 900ml/hr, inlet temperature of 200 degree C and outlet temperature of 134 degree C. The powders were analysed for starch, vitamin C and moisture content. These data is used determine the optimum operating condition for a pilot-scale spray dryer. The optimum operating condition of a laboratory scale spray dryer was then applied to the pilot scale spray dryer. Similar analysis on the powder were conducted. This optimum operating condition was applied to a pilot scale spray dryer. From the trial runs, it was found the optimum operating condition for pilot scale spray dryer was at a flow rate of 1200ml/hr, inlet temperature of 160 degree C and outlet temperature of 96 degree C. The powder dried at this operating condition was found possible for commercial production of tropical fruit powder.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Mango puree, moisture content, spray drying, starch, tropical fruit powder, vitamin C|
|Subjects:||T Technology > T Technology (General)|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Norhani Jusoh|
|Deposited On:||13 Dec 2007 10:23|
|Last Modified:||01 Jun 2010 03:19|
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