Food processing in commercial industry generally aims to extend shelf life, change or increase products’ characteristics (color, flavor, texture), ease treatment and distribution, increase economic value, and maintain or improve quality, particularly nutritional quality, digestibility, and nutritional value. The objective of this research is to determine the shelf life of products made from cassava flour which is fortified by red bean flour, and to understand whether there is a decrease in nutritional value during the storage period, as well as to calculate the Recommended Dietary Allowances (RDA). The Recommended Dietary Allowances of Cassava Flakes with Red Bean Flour for breakfast has a very important function. For instance, children who are in school need plenty of energy to start their activities and stay focused at school. Breakfast food needs to fulfill the 20-25% of the RDA for children, who need a total of 2,000 kilo calories per day. An alternative option for breakfast is nutritious flakes that can be consumed with a quick preparation time. The method to determine the shelf life is carried out using the Accelerated Self Life Testing (ASLT) and critical water activity methods, whereas to determine the proximate nutritional value we used the gravimetric method to determine the ash content and water content. In addition, we used the Kjehdahl method to determine the protein content, the sokhlet method for the fat content, and by difference method for the carbohydrate content. The result obtained for the nutritional value throughout the storage period is that the nutritional value of the flakes decreased after being stored for 10 weeks. The result of determining the shelf life using a critical water activity method is 307.5 days of storage. RDA or the Recommended Dietary Allowance is the percentage of the amount of a nutrient contained in the food consumed based on the daily needs of the healthy person. Generally this daily requirement is based on daily caloric requirement of 2000 kcal, but some also use base 2500 kcal. RDA's guidance in Indonesia can follow the guidance given by POM RI based on Decree of the Head of POM RI No. HK.00.05.52.6291 on Food Label Nutritional Reference.
Critical water activity and critical water content of freeze-dried strawberry powder as affected by maltodextrin and arabic gum
