Lactose test apparatus

Details Lactose test apparatus Lactose test apparatus

2007-02-27

2007-02-27

Noguerola, Alex (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S403140, C422S051000, C422S082050

Reexamination Certificate

active

10444657

ABSTRACT:
A test for the presence of lactose in a sample, in which the test comprises a) treating the sample with lactase enzyme thus converting the lactose into glucose and galactose b) testing the sample for the presence of glucose using any one of a variety of prior art tests for the presence of glucose.

REFERENCES:
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patent: 5820551 (1998-10-01), Hill et al.
Fumio et al. (“Simultaneous determination of glucose and lactose in sour milk using an immobilized glucose oxidase electrode combined with a .beta.-galactosidase-attached measuring cell,” Bunseki Kagaku (1990), 39(11), 729-34).
Entry for Beta-Galactosidase ofEscherichi coliin Encylcopedia of Molecular Biology, John Wiley & Sons, Inc. 1999.
Sánchez-Mazanares et al. (“Determination of lactose by an enzymatic method,” Food Chemistry 46(1993) 425-427).
Loechel et al. (“Amperometric bi-enzyme based biosensor for the determination of lactose with an extended linear range,” Z. Lebensm Unters Forsch A (1998) 207:381-385).
Katsu et al. (Simultaneous Determination of Lactose and Glucose in Milk using two working enzyme electrodes, Talanta, vol. 41, No. 6 pp. 843-848).
Photos of two spectrophotometer cells from Analytical Instruments, LLC. downloaded on May 15, 2006.
Entry for “Galactosidase, β-” in the ACS Registry, downloaded May 15, 2006.
Ernest C. Adams, Jr., C. Edwzard Burkhart, and Alfred H. Free, Specificity of a Glucose Oxidase Test for Urine Glucose, Science magazine, pp. 1082-1083, 1957.
Wendell T. Caraway, PH.D. and Nelson B. Watts, M.S., Carbohydrates, pp. 422-447.

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