Generalized linearization of kinetics of glucose isomerization to fructose by immobilized glucose isomerase.
نویسندگان
چکیده
The kinetic parameters of both glucose isomerization to fructose and immobilized glucose isomerase (GI) inactivation calculated under different conditions are compared and discussed. Utilizing these figures, the possibility of generalizing a linear model, previously proposed for the kinetics of glucose isomerization by immobilized glucose isomerase, is investigated, so as to apply them to whole ranges of temperature and concentrations of actual interest in industrial processes. The proposed model is a satisfactory approximation of the more involved Briggs-Haldane approach and substantially simplifies the problem of optimizing an industrial fixed-bed column for high-fructose corn syrup (HFCS) production.
منابع مشابه
Determination of Kinetic Parameters for Catalytic Isomerization of Glucose to Fructose by immobilized Glucose Isomerase in an Aqueous-Ethanol Medium
Catalytic isomerization of glucose to fructose by immobilized glucose isomerase in an aqueous-ethanol medium was studied. Using Michaelis-Menten equation and Haldane relationship, the main kinetic parameters were determined: Kmf, Vmf, Kmr, Vmr. By comparing the aqueous-ethanol medium with an aqueous solution, the measured values of Kmr and Kmf were increased in the aqueous-ethanol solution, whi...
متن کاملDetermination of Kinetic Parameters for Catalytic Isomerization of Glucose to Fructose by immobilized Glucose Isomerase in an Aqueous-Ethanol Medium
Catalytic isomerization of glucose to fructose by immobilized glucose isomerase in an aqueous-ethanol medium was studied. Using Michaelis-Menten equation and Haldane relationship, the main kinetic parameters were determined: Kmf, Vmf, Kmr, Vmr. By comparing the aqueous-ethanol medium with an aqueous solution, the measured values of Kmr and Kmf were increased in the aqueous-ethanol solution, whi...
متن کاملOptimization of HFDS Production from Date Syrup (RESEARCH NOTE)
Fructose is utilized as a common sweetener in many food industries. Today, a large amount of HFCS (high fructose corn syrup, an equilibrium mixture of glucose and fructose) is produced by glucose isomerase, immobilized enzymes from corn starch. There are a lot of date palms in Iran. Date is a favorable source of carbohydrates, and a suitable source for HFDS (high fructose date syrup) production...
متن کاملA Comparative Study of the Activity of Free and Immobilized Enzymes and Its Application to Glucose Isomerase
-We have made an experimental study of the isomerization of fructose and glucose by glucose isomerase in two forms: one soluble and the other immobilized by being fixed in a gel matrix. For the latter technique we used a fixed-bed differential reeirculation reactor, which allowed us to obtain comparable results to those we got with the enzyme dissolved within a batch reactor. We propose a simpl...
متن کاملEffect of Substitution of Sugar by High Fructose Corn Syrup on the Physicochemical Properties of Bakery and Dairy Products: A Review
High fructose corn syrup (HFCS) is commonly found in soft drinks and juice beverages, as well as in many pre-packaged foods such as breakfast cereals, baked goods and dairy desserts. Historically, sucrose (table sugar) was primarily added to processed foods and beverages as the sweetening agent. In recent years, the use of HFCS has significantly increased in popularity due to its sweetness, abi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Biotechnology and bioengineering
دوره 63 3 شماره
صفحات -
تاریخ انتشار 1999