The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 1993
Filed:
Apr. 10, 1991
Kanzaki Paper Mfg. Co., Ltd., Tokyo, JP;
Abstract
A method and apparatus for the determination of the average molecular weight, average chain length or dextrose equivalent of starch and related carbohydrates containing glucose units. The starch is analyzed by determining the free glucose amount (Gf) contained in starch or related carbohydrate sample, determining a gross glucose amount (Gt) rendered by hydrolysis of starch or related carbohydrates, and further determining a glucose amount (Gr) rendered by hydrolysis of a reduced product which is obtained by reduction of reducing terminals contained in starch or related carbohydrate. The average molecular weight, average chain length or dextrose equivalent of the starch is determined using the formulas stated below from the measured amounts of the free glucose amount (Gf), and the glucose amount (Gr). The apparatus preferably utilized immobilized enzymes to conduct the hydrolysis of the starch sample, contains a device for recognizing and storing the measured values and computed data, and contains further a device for computing average molecular weight (Ma), average chain length (Dp) or dextrose equivalent value (DE) according to the following expressions: Dp=2.multidot.Gt/(Gt-Gr+Gf), Ma=18(19.multidot.Gt+Gf-Gr)/(Gt-Gr+Gf), DE=1000(Gt-Gr+Gf)/(19.multidot.Gt-Gr+Gf), or DE=1000/(9.multidot.Dp+1).