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:
Feb. 26, 2019
Filed:
Dec. 04, 2015
Bontac Bio-engineering (Shenzhen) Co., Ltd, Shenzhen, CN;
BONTAC BIO-ENGINEERING (SHENZHEN) CO., LTD, Shenzhen, CN;
Abstract
A method for purifying a salt of reduced form of β-nicotinamide adenine dinucleotide (NADH) includes: sequentially microfiltrating and nanofiltrating a reaction solution obtained after an enzymatic reaction, collecting a concentrate for use; adding an ion pair reagent to the concentrate, and purifying by gradient elution to obtain a purified filtrate using a reverse-phase chromatographic column as a stationary phase, a buffer solution as a phase A, and ethanol as a phase B; changing the cations in the purified filtrate into sodium ions to obtain a filtrate by using a cation exchange resin; and nanofiltrating the filtrate, and freeze drying in a vacuum freeze drier. The method results in an excellent purity and yield of a salt of NADH that meets requirements in industry.