Storage Stability of CFC/Polyol Premixes

Abstract

of foods modified by enzymatic hydrolysis device structure of proteins. Digestibility of protein was evaluated by the increase of hydrolysis products as a result of enzymatic hydrolysis. Proved that putting of recipes whey protein concentrate and rice flour is appropriate, as it allows to receive soul-milk product "Vitalakt" and cheese's pasta with better performance digestibility. It is shown that the rate of protein digestion of dairy products for baby food higher than the ingredients of these products separately. This protein digestibility milk was higher for the plant. Thus, the rate of digestibility for dairy baby food was within 70-77 %, and rice flour-41,8 %. The use of whey protein concentrate and related processing technology increases the availability of protein for proteolytic enzymes. Abstract Тhe theoretical aspects of determining the homogeneity of mixed feed and the conditions for the manifestation of segregation are considered. The purpose of this study is to investigate the possible segregation of Microtracer ferro-magnetic particles and premix during the storage and delivery of products from its production site to the consumer. In the samples taken (6 samples of 25 g and 4 samples of 200 g) from different locations in the 25 kg paper bag, the Microtracer concentration was determined and the values of the standard deviation and the coefficient of variation were calculated. It was concluded that observed variation between the Microtracer concentrations in 25 g sub-samples are ranging between 0.28 and 0.49%. The variations between the Microtracer concentrations in 200 g sub-samples were relatively small (from 0.49 to 0.52%) and the average value of the coefficient of variation was 3.4%. The average concentration of Microtracer in the 200 g sub-samples was noticeably higher (0.50%) than average concentration from analysis of 25 g sub-samples (0.37%). The results obtained allow us to conclude that the moderate segregation between Microtracer and premix is taking place during shipment of product from the manufacturing site to the customer probably due to difference in particle sizes of these materials. The comparison on segregation data obtained as a result of model tests was made. The role of segregation of individual components of premixes in the process of their production, storage and delivery was analyzed. It was shown that segregation can be manifested as a result of uneven distribution of premix particles which differing in size, shape and density. The contribution of each of these components in the segregation process was discussed. The method of model laboratory segregation tests between premix and ferromagnetic Microtracer which is proposed in this study seems to be a useful tool for investigating the processes of segregation of granular materials.

Accelerated Aging Study of HCFC 141b in Polyurethane Premixes

“…The reaction in Equation (1) can be effectively controlled by the addition of a neutral free radical inhibitor such as alpha-methylstyrene. CFC 11 containing about .25% alphamethylstyrene, CFC 11SBA (stabilized blowing agent), is widely used to give the required stability in many formulations [3]. This paper describes our results to date from stability studies comparing HCFC 141b to CFC 11SBA.…”