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Zhu Ziqiang

Zhejiang University

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Featured researches published by Zhu Ziqiang.

Biotechnology Techniques | 1994

Recovery of antibiotics by aqueous two-phase partition —Partitioning behavior of pure acetylspiramycin solution in polyethylene glycol/potassium phosphate aqueous two-phase systems

Guan Yixin; Mei Lehe; Zhu Ziqiang

The effects of average molecular weight of PEG, concentrations of PEG and KH2PO4 and pH on the partition equilibrium of acetylspiramycin in PEG/KH2PO4 aqueous two-phase systems were studied in detail. The partition coefficients of acetylspiramycin in PEG/ KH2PO4 systems were measured at room temperature 25 °C. It was found that acetylspiramycin partitioned unevenly in the aqueous two-phase systems composed of PEG and KH2PO4 and could be purified by this technique. A suitable phase-forming system (pH=6.7, 12w/w% PEG2000, 11w/w% KH2PO4) was found out after partition coefficient (Kp=42) , extraction ratio (η=96%) and recovery ratio(R=98.8%) were investigated comprehensively in this paper.

Archive | 2013

Method for preparing surface-closed medicine-carrying porous polymer microsphere based on supercritical fluid technology

Guan Yixin; Tang Chuan; Yu Jinpeng; Liu Qianqian; Yao Shanjing; Zhu Ziqiang

Acta Polymerica Sinica | 2013

FABRICATION OF POROUS POLY(LACTIC ACID- co -GLYCOLIC ACID) SCAFFOLDS USING SUPERCRITICAL CARBON DIOXIDE: FABRICATION OF POROUS POLY(LACTIC ACID- co -GLYCOLIC ACID) SCAFFOLDS USING SUPERCRITICAL CARBON DIOXIDE

Liu Qianqian; Tang Chuan; Du Zhe; Guan Yixin; Yao Shanjing; Zhu Ziqiang

Archive | 2014

Method for preparing medicine-carrying wound dressing based on supercritical fluid technology

Guan Yixin; Tang Chuan; Du Zhe; Shen Yubin; Yao Shanjing; Zhu Ziqiang

Journal of the Chemical Industry and Engineering Society of China | 2010

Preparation of control-released drugs using supercritical solution impregnation process

Zhu Ziqiang

Journal of Zhejiang University(Engineering Science) | 2005

Cellulose/titanium dioxide composite cation exchanger for expanded bed adsorption

Zhu Ziqiang

Archive | 2003

Method for producing recombinant human epidermal growth factor by using gene engineering colibacillus

Yao Shanjing; Zhu Ziqiang; Tong Wangyu

Archive | 2013

Mucous membrane adhesive polymer drug-loaded pasting film preparation method base on supercutical fluid technology

Guan Yixin; Tang Chuan; Yao Shanjing; Zhu Ziqiang

Chemical Industry and Engineering Progress | 2011

Solubility estimation of cholesterol in the mixture of organic solvent and high pressure CO_2 by equation of state

Zhu Ziqiang

Journal of Zhejiang University(Engineering Science) | 2010

Micronization of poly(lactic acid)by supercritical fluid assisted atomization with intensifying two-phase mixing

Zhu Ziqiang

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Yao Shanjing

Zhejiang University

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Guan Yixin

Zhejiang University

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Mei Lehe

Zhejiang University

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