Determination Of Ash Variation In Production Processing Of Corn Starch Syrup

Starch sugar is starch Futher-processinig production, with starch as raw materials, enzymatic, acid hydrolysis and other methods are be used to hydrolyze starch to produce various hydrolysis sugar. The main variety of starch sugar varied in nature, are widely used in food, fermentation, pharmaceutical and chemical industries. In recent years, as people's living standards improve and biotechnology development, starch sugar industry has been rapid developed, and inevitably will become an development component of sugar industry.In order to provide convenient standard detection reference for starch sugar product quality inspection of starch sugar industry, and a theoretical basis for automatic detection and control of industrial production. Based on the actual industrial production, an systematic experimental research on ash content and conductivity of processing and end production of starch sugar was studied.Ash content and electrical conductivity study of syrup for brewing shown that 25% is the optimum electrical conductivity detection concentration of the syrup for brewing. Ash content of syrup for brewing between 0.1279% with 0.2974%, the average is 0.2042%. Electrical conductivity of syrup for brewing between 246.0μs/cm with 392.0μs/cm. Conductivity-ash formula of syrup for brewing is W灰分=6.67×10-4×(C样液-0.22×C水),but the Chi-square test results show that the conversion factor K did not consistent with the normal distribution. The difference of ash content detection method between sulfate and conductivity is significant. Electric conductivity method is not appropriate for the determination of ash content of syrup for brewing.Concentration on the conductivity curve of high fructose syrup shown that diluted the concentration of 25% for the determination of the optimal concentration of conductivity. Ash content of fructose syrup range is 0.03976%~0.00891%, the average is 0.02121%,accord with national standards. Electrical conductivity range is 14.5μs/cm~52.0μs/cm, that fructose syrup production process, raw material, process parameters are caused a considerable influence to ash content of starch sugar product. The relationship established for conductometric ash in high fructose syrup is: W灰分=7.93×10-4×(C样液-0.39×C水). Conductometric methods provide a simple, rapid, and accurate means of determining ash content of high fructose syrup for industry determining, that can be used to replace the gravimetric method.Study the relationship between ash content and electrical conductivity of glucose syrup, the results show ash content of glucose syrup is 0.01924%~0.00316%, the average is 0.00864%, consistent with national standards. Electrical conductivity of glucose syrup solution (25%) is 7.6μs/cm~35.1μs/cm. By fitting the linear correlation equation, glucose syrup Conductivity ash formula is obtained: W灰分=5.08×10-4×(C样液-0.30×C水). Correlation analysis showed that sulphate method and conductivity method showed no significant difference, and conductivity method has the advantages of convenience and accuracy.Ash content, conductivity, pH, sodium ion concentration of raw material, process production and end production of fructose syrup and glucose syrup were detected. The study and analysis shown, that the ash content of starch is mainly affected by production process and raw material. Changes of ash content in high fructose syrup and glucose syrup production process are not completely consistent with the conductivity, but significantly correlated and consisted with conductivity after the filter. pH adjusting in production process changed ash content in starch sugar, there is big correlation between them. Sodium ions is an important evaluation indicator of ash content in starch sugar.