The process and formula of purple cereal-potato mixed paste for infants

The best formula and the main process parameters of purple cereal-potato mixed paste (a kind of cereal-based complementary food for infants) using rice,purple rice,purple sweet potato and Chinese yam as materials were studied.By single and orthogonal experiment, the best process parameters of Chinese yam microwave heating and color protecting were obtained:the microwave output power 1 200 W, microwave heating time 60 s; the formula of color protecting was as following:Vc 0.5%, sodium chloride 1.0%, citric acid 0.6%, color protection time 5 min.The method of maturing for purple rice and purple sweet potato was studied by single factor test:purple rice was boiled 20 min in atmospheric pressure, purple sweet potato was steamed 10 min at 100℃.Using orthogonal test to determine the main formula as follow rice:purple rice:yam=5:2:2 (mass ratio), the amount of purple sweet potato, milk, sugar, salt was respectively 30%, 30%, 6%, 0.2%(the sum of the main wet raw material was 100).The amount of DHA algae oil was 2.0 mg/g.The product was suitable for eight-month-or-more infants.