Nutritional and sensory qualities of rice flakes (pinipig) and its selected products

Rice flakes made from waxy rice harvested at 95-, 100-, 105- and 110- days of maturity were evaluated for their nutritional and sensory characteristics. Dietary fiber, protein, and phytate content was highest at rice flakes harvested at 100-days. Rice flakes harvested at full maturity or 110-days had the highest amount of moisture, ash, fat, and crude fiber. Iron and calcium content were the same for all the samples regardless of maturity. A nutrient comparison of the 100-day rice flakes versus commercial oats showed that commercial oats had higher nutrient value for crude protein, crude fat, ash, crude fiber, dietary fiber, and calcium. The rice flakes on the other hand, have a lower phytate content. Sensory evaluation of the rice flake-based products namely native cake and rice cookies, showed that color, texture, rice flavor, and rice aroma were attributes of the rice flakes which contributed to the general acceptability of the two test products. The study further shows that there were no significant differences in the nutritional and sensory qualities of rice flakes harvested at the different stages of maturity. However, a combination of the physical, chemical, and sensory data revealed that the rice flakes made from waxy rice harvested at 100-days of maturity is better since it has the highest protein and dietary fiber content as well as the lower phytate content. In terms of percent nutrient adequacy, rice flakes are comparable to commercial oats in meeting the recommended daily allowances of adults. A 30 g serving of rice flakes alone can provide 3.96% of the total energy requirements (Kcalories) per day for males and 6.42% protein for females. Rice flakes likewise contribute 14.0% of the total dietary fiber recommended in a day. Thus, when eaten as a snack food or consumed several times a day would mean that the recommended daily allowances of the individual could be met. Rice flake and its products are locally available at a cheaper price compared to other cereal-based products in the market