Abstract:
Abnormal bowel function such as constipation or diarrhea usually found in patients with long term tube feeding. Intake of dietary fiber can normalize bowel function. This study developed nutritional balanced soy-based medical food supplemented with brown rice fiber. The formula contained full fat soy flour, MCT oil and maltodextrin 8.47, 1.56 and 12.34 percent, respectively. Brown rice fiber was added in the formula 0.55, 0.80, 1.05 and 1.30 percent. Adjusted with water to 100 ml, mixed, heated at 100๐C for 30 minutes, homogenized for 30 minutes, filled in a bottle and pasteurized or sterilized. Physical properties, viscosity, flow rate and pH were examined and the best formulas for both pasteurized and sterilized products were those contains brown rice fiber 1.30 percent. Consequently, corn starch 0.50, 1.00, 1.50 and 2.00 percent were added. The most practical formula of pasteurized and sterilized product contained 1.50 and 0.90 percent, respectively. Lecithin 0.10, 0.20, 0.30, 0.40, 0.50 and 0.70 percent was added. The most practical formula of both products contained lecithin 0.50 percent. The taste of both pasteurized and sterilized products were improved by substituting maltodextrin with sucrose (maltodextrin:sucrose ratio were 100:0, 90:10, 80:20, 70:30 and 60:40). The most palatable formulas contained maltodextrin:sucrose ratio 60:40. The products were flavored by vanilla or banana flavor compared with bland. Vanilla flavored formulas were the most accepted for both pasteurized and sterilized products. In conclusion, the best products found in this study contained full fat soy flour, MCT oil, maltodextrin, brown rice fiber, corn starch, lecithin, sucrose and vanilla flavor 8.47, 1.56, 6.59, 1.30, 1.50, 0.50, 4.39, 0.05 percent, respectively for the pasteurized product and 8.47, 1.56, 6.95, 0.90, 0.50, 4.63 and 0.05 percent, respectively for the sterilized product. The moisture, protein, fat, carbohydrate, ash, crude fiber and dietary fiber contents of pasteurized product were 76.87, 3.68, 3.31, 13.66, 1.44, 1.04 and 1.21 percent, respectively and of sterilized product were 76.49, 3.72, 3.38, 13.37, 1.49, 0.76 และ 1.06 percent, respectively. Energy distribution form protein, fat and carbohydrate of pasteurized product were 14.84, 30.05 and 55.11 percent, respectively and of sterilized product were 15.06, 30.80 and 54.14 percent, respectively. Energy density were 0.99 Kcal/ml for both pasteurized and sterilized product. Viscosity, flow rate and pH of both pasteurized and sterilized products were appropriated for tube feeding. Pasteurized product could be kept at 2-8๐C for 7 days and sterilized product could be kept at room temperature for 30 days without any significant change in physical properties and safe form microbe.