Bontac Bio-engineering (shenzhen) Co., Ltd

Bontac Invitrolife Bio-technology (shenzhen) Co., Ltd

Jiangxi Bonzymes Biotechnology Co., Ltd.

Dongjiang Environmental Co., Ltd.

Xinglin Guo

Rongzhao Fu

Zhenwei Li

Long He

Min Wang

Wenbin Xu

Shanting Li

Kan Tan

Yongjun Xiao

Yanhua Zhang

The present disclosure relates to the field of resource utilization-oriented treatment technologies for wastewater, and more particularly, to a resource utilization-oriented treatment method for a spent electroless nickel plating bath. The method includes oxidation de-complexation, synchronous precipitation of nickel and phosphorus, secondary precipitation of nickel, and resource utilization of sodium salt. In the present disclosure, in a reaction process, no sludge is generated to avoid secondary pollution to the environment. Further, the present disclosure has the advantages of short flow and less chemical use, greatly reducing treatment costs. In this way, this method is a low-cost and clean resource utilization-oriented treatment method capable of achieving resource utilization-oriented recovery of nickel, phosphorus, sodium, sulfate radical, or chlorine in the spent electroless nickel plating bath.

Resource utilization-oriented treatment method for spent electroless nickel plating bath

An acid phosphatase mutant, and method for preparing nicotinamide riboside by same. The mutant is a protein of the following (a), (b) or (c): (a) a protein, having an amino acid sequence shown in SEQ ID NO: 3; (b) a protein, derived from (a), having catalytic activity higher than an acid phosphatase parent having an amino acid sequence shown in SEQ ID NO: 2, obtained by substituting, deleting or adding several amino acids in the amino acid sequence shown in SEQ ID NO: 3, using nicotinamide mononucleotide as a substrate; (c) a protein, having catalytic activity higher than the acid phosphatase shown in SEQ ID NO: 2, having 90% or more homology with the amino acid sequence of the protein defined by (a) or (b), and using nicotinamide mononucleotide as a substrate. It is used to prepare nicotinamide riboside and the conversion rate can be 99%.

Acid phosphatase mutant, use thereof and method for preparing nicotinamide riboside by same

A nicotinamide riboside composition and preparation method thereof, the icotinamide riboside composition comprises nicotinamide riboside and/or a salt thereof and konjac glucomannan or rebaudioside A. The nicotinamide riboside composition provided by the present invention, used to increase the concentration of NAD in cells, thereby preventing and improving various unhealthy conditions caused by NAD deficiency. is stable in property and easy to store and transport.

Stable nicotinamide riboside composition and preparation method thereof

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Guangdong, China

Xinglin Guo