摘要:
This invention relates to a process for the production of a purified glucose isomerase enzyme which comprises contacting an enzyme extract containing glucose isomerase and impurities with a first polysulfone membrane not normally permeable to glucose isomerase, in the presence of a salt concentration capable of selectively inducing permeation of glucose isomerase through the membrane, and obtaining a glucose isomerase containing permeate.
摘要:
The disclosure is directed to the resolubilization of an insoluble glucose isomerase-amine complex, wherein the amine has the general formula: ##STR1## The insoluble enzyme complex may be resolubilized to produce a stable concentrated and purified glucose isomerase preparation by reaction with a resolubilizing mixture comprising a cation exchange resin.
摘要:
The present invention relates to a process for the production of a purified glucose isomerase which comprises contacting an impure extract containing glucose isomerase and soluble impurities with a weakly basic ion exchange material known to adsorb glucose isomerase; adding a first salt solution of a concentration which removes unadsorbed and weakly adsorbed impurities, but not glucose isomerase; and adding a second, buffered salt solution which elutes the adsorbed glucose isomerase.
摘要:
Breakfast cereals are sweetened by treating cereal grains or at least one cereal grain fraction such as bran, with enzymes comprising glucoamylase and glucose isomerase to produce fructose while retaining cereal particle discreteness or integrity. Enzymatic treatment with alpha-amylase may be initiated prior to, during, or after cooking. The enzymatically treated, cooked cereal grains are formed into breakfast cereal shapes and the enzymes are inactivated to provide a shelf-stable cereal product. The cereal products exhibit a sweet, pleasing complex-honey-like taste and aroma. Producing fructose provides a greater level of sweetness for a given amount of starch conversion into low molecular weight reducing sugars such as mono- and di-saccharides. In achieving a given level of sweetness, more starch or high molecular weight dextrins may be retained for their matrix forming ability or for improved machineability of the enzymatically treated cereal grains into breakfast cereal shapes. The naturally sweetened cereal products of the present invention may be in shredded, flaked, ground, or extruded form.
摘要:
Process for converting starch to dextrose wherein a partially hydrolyzed starch solution containing at least 10 percent hydrolyzed starch is contacted with an enzyme system under conditions whereby substantially complete conversion of the starch to dextrose is achieved. The enzyme system comprises immobilized glucoamylase and alpha-amylase selected from the group consisting of soluble alpha-amylase, immobilized alpha-amylase and mixtures thereof.
摘要:
The disclosure is directed to the treatment of a glucose isomerase extract with an amine having the general formula: ##STR1## An insoluble complex containing enzyme activity is formed. The insoluble enzyme complex may be resolubilized to produce a stable concentrated and purified glucose isomerase preparation.
摘要:
Enzyme purification is carried out by contacting an impure liquid enzyme preparation containing enzyme and soluble impurities with an ion exchange material in a column to adsorb both the enzyme and impurities by the ion exchange material, adding an additional amount of the impure liquid enzyme preparation whereby the soluble impurities therein are preferentially adsorbed by the ion exchange material and the adsorbed enzyme is displaced from the ion exchange material to produce a purified liquid enzyme preparation containing higher enzyme activity than before purification. The purified enzyme is more highly adsorbed by ion exchange material when immobilizing the enzyme.
摘要:
Process for converting starch to dextrose wherein a partially hydrolyzed starch solution containing at least 10 percent hydrolyzed starch is contacted with an enzyme system under conditions whereby substantially complete conversion of the starch to dextrose is achieved. The enzyme system comprises immobilized glucoamylase and alpha-amylase selected from the group consisting of soluble alpha-amylase, immobilized alpha-amylase and mixtures thereof.
摘要:
A method of generating anthropomorphic vehicle images for a vehicle owner is shown that includes providing a plurality of anthropomorphic vehicle images on a visual display for a vehicle owner to select; receiving a selection of an anthropomorphic vehicle image from the vehicle owner using a wireless device; obtaining vehicle data using one or more vehicle sensors located on the vehicle; altering at least a portion of the selected anthropomorphic vehicle image based on the accessed vehicle data; and displaying the altered anthropomorphic vehicle image on a wireless device to the vehicle owner.
摘要:
A system and method for updating and communicating traffic information to at least one receiving vehicle includes a traffic information center and at least one probe vehicle. In a preferred embodiment, major road sections are represented as links, the center stores and updates a parent map database of links that are associable with a first value of a condition, each probe vehicle is configured to receive a copy of the database either periodically or upon request, determine a second value of the condition, and compare the first and second values to determine a condition discrepancy. Where the discrepancy surpasses a threshold, each probe vehicle is further configured to upload at least the second value to the center, so as to update the parent map database.