Protein bioavailability-lowerring in rats fed high dietary fiber from cereal and nata de coco

• Published in: Witthayāsān Kasētsārt. Sākhā thammācht
• Main Authors: Wanpen Mesomya(Kasetsart Univ., Bangkok (Thailand). Institute of Food Research and Product Development), Yaovadee Cuptapun(Kasetsart Univ., Bangkok (Thailand). Institute of Food Research and Product Development), Duangchan Hengsawadi(Kasetsart Univ., Bangkok (Thailand). Institute of Food Research and Product Development), Plernchai Tangkanakul(Kasetsart Univ., Bangkok (Thailand). Institute of Food Research and Product Development), Sureepan Boonvisut(Department of Health, Bangkok (Thailand). Division of Nutrition), Somsri Poosimuang(Department of Health, Bangkok (Thailand). Division of Nutrition)
• Format: Journal Article
• Language: English
• Published: 01.01.2001
• Subjects: Bioavailability; Cereals; Dietary fibres; Mung beans; NATA DE COCO; Rats
• ISSN: 0075-5192

Comparative effects of 6 different high dietary fiber diets and casein diet on protein bioavailability (protein efficiency ratio, net protein utilization, biological value and digestibility) were investigated by feeding male Sprague - Dawley rats with diets containing unpolished rice, mung bean, sweet corn, nata de coco, milk powder, sugar (formula 1): pumpkin, mung bean, unpolished rice, nata de coco, milk powder, sugar (formula 3): oat, sweetpotato, kidney bean, nata de coco, milk powder, sugar (formula 5): formula 2, 4, 6 containing the same raw materials as formula 1, 3, 5 but without milk powder and sugar. Six experimental diets and control diet (casein) were prepared from 6 formulas by AOAC, contained 10 +-0.3 percent test protein, 8 percent oil, 5 percent water, 5 percent mineral, 1 percent vitamin, 1 percent cellulose, 35 percent sucrose, 35 percent corn starch and different dietary fiber. Total dietary fiber in diet 6 was the highest with it being 20.01g/100 g but the casein diet was the lowest with 6.58 g/100 g whereas in diet 1-5 the dietary fiber ranged from 8.41 to 13.22 g/100 g . The value of protein efficiency ratio in diets 1-7 was 2.44, 1.89, 2.29, 1.66, 2.55, 1.88 and 2.50 respectively whereas net protein utilization and digestibility in diets 1-7 were 63.81 - 77.45 and 70.05-95.52 respectively. Net protein utilization and digestibility in the casein group showed the highest values of 77.45 and 95.52 respectively. The range of biological values in diet 1-7 was 80.29 - 91.76 . The results indicate the highest dietary fiber diet showed the highest content of feces and decreased the value of net protein utilization and digestibility.