Guangzhou Special Pressure Equipment Inspection and Research Institute

Institute of Biological and Medical Engineering, Guangdong Academy of Sciences

Juan Liu

Hui Zhang

Bo Yang

Ming Zeng

Maodong Li

Zhigang Chen

Jinmei Lin

Wen Yu

Weiwen Ye

Hua Li

Junming Zhao

Zongjie Yin

Junjia Chen

Chuanli Lu

Nianfang Ma

Peizi Kang

An okra polygalacturonic acid having a uric acid-lowering effect, a method for preparing the same, and use of the same are disclosed. The method includes: smashing an okra, lixiviating the okra in ethanol, and filtering to obtain a filtrate and a residue; removing the filtrate, and lixiviating the residue in heated water to obtain an extraction solution; adding the ethanol into the extraction solution to precipitate okra crude polysaccharides; purifying the okra crude polysaccharides over an anion exchange column by eluting with water or a NaCl solution, a Tris-HCl solution or a NaCl-containing Tris-HCl solution, or a phosphate solution or a NaCl-containing phosphate solution, and collecting a fraction eluted by the NaCl solution, the NaCl-containing Tris-HCl solution, or the NaCl-containing phosphate solution; and concentrating, dialyzing and drying the fraction to obtain the okra polygalacturonic acid.

Method for preparing okra polygalacturonic acid having uric acid-lowering effect

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

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Guangzhou, China

Juan Liu