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Journal of Rare Earths 2016年第3期34卷 268-275页

作者：杨波沈岳松曾燕伟沈树宝祝社民 college of Materials Science and engineering Nanjing Tech University college of biotechnology and pharmaceutical engineering Nanjing Tech University

A series of copper-doped Ti-Ce-O_x complex oxide catalysts were synthesized by sol-gel method and evaluated for selective catalytic reduction of NO by NH_3 at low temperature. The promotional effect of copper doping on their structure, acidity and catalytic activity were investigated by means of Brumauer-Emmett-Teller（BET）, temperature-programmed reduction（H_2-TPR）, X-ray diffraction（XRD）, scanning electron microscopy（SEM）, temperature programmed desorption（NH_3-TPD） and pyridine adsorption infrared spectrum（Py-IR） technologies. Results showed that the copper additives could improve the low temperature catalytic performance for selective catalytic reduction of Ti-Ce-O_x catalyst and the NO conversion efficiency of Ti-Cu-Ce-O_x catalyst reached above 90% at 150-250 oC（Ti/Cu=4）. The introduction of copper could enhance the redox property of the Ti-Ce-O_x complex oxide catalyst, refine the particle size caused by lattice distortion and oxygen vacancy defect and enhance the acid amount of the Lewis acid site. Moreover, Ti-Cu-Ce-O_x complex oxide catalyst also had good anti-sulfur ability and anti-water influence, when injecting 300 ppm SO_2 and 10 vol.%H_2O, the NO conversion efficiency of Ti-Cu-Ce-O_x catalyst reached 80%.

关键词： Ti-Cu-Ce-Ox catalyst selective catalytic reduction low temperature Cu doping rare earths

Recent advance of chemoenzymatic catalysis for the synthesis of chemicals: Scope and challenge

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Chinese Journal of Chemical engineering 2021年第2期34卷 146-167页

作者： Mengjiao Xu Zhuotao Tan Chenjie Zhu Wei Zhuang Hanjie Ying Pingkai Ouyang college of biotechnology and pharmaceutical engineering Nanjing Tech UniversityNanjing 211816China

Chemoenzymatic catalysis can give full play to the advantages of versatile reactivity of chemocatalysis and excellent chemo-,regio-,and stereoselectivities of *** chemoenzymatic methods can not only save resource,cost,and operating time but also reduce the number of reaction steps,and avoid separating unstable intermediates,leading to the generation of more products under greener circumstances and thereby playing an indispensable role in the fields of medicine,materials and fine *** incompatible challenges between chemocatalyst and biocatalyst remain,strategies such as biphasic system,artificial metalloenzymes,immobilization or supramolecular host,and protein engineering have been designed to overcome these *** this review,chemoenzymatic catalysis according to different chemocatalysis types was classifiably described,and in particular,the classic dynamic kinetic resolutions(DKR)and cofactor regeneration were ***,the bottlenecks and development of chemoenzymatic catalysis were summarized,and future development was prospected.

关键词： Chemoenzymatic Dynamic kinetic resolution Cofactor regeneration Biocatalysis Chemocatalysis

Regeneration of the deactivated TiO_2-ZrO_2-CeO_2 /ATS catalyst for NH_3-SCR of NO_x in glass furnace

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Journal of Rare Earths 2013年第2期31卷 130-136页

作者：杨波沈岳松沈树宝祝社民 college of Materials Science and engineering Nanjing University of Technology biotechnology and pharmaceutical engineering Nanjing University of Technology

Larger amounts of alkalis, alkali earth metals and sulfides in flue gas from glass furnace were easier to deactivate selective catalytic reduction （SCR） catalyst compared to the flue gases from other stationary sources. Catalyst regeneration has been an emerging research topic for flue gas denitrification in glass furnace. Regeneration of the deactivated TiO2-ZrO2-CeO2 /Al2TiO 5 -TiO2-SiO2 （ATS） complex phase ceramics catalysts used for NH3 -SCR of NO x in glass furnace was studied in this work. Effects of regeneration methods, including washing with different aqueous solutions and sulfuric acid, thermal regeneration, thermal reduction regeneration, and thermal regeneration with SO2 , on catalytic performance were comparatively investigated. In comparison of catalytic activities between the catalysts before and after regeneration, results showed that washing was the most effective regeneration method, and the sulfuric acid concentration of the washing solution was an important factor. Washing time directly affected catalyst regeneration efficiency and catalyst life. The regenerated TiO2-ZrO2 -CeO2 /ATS catalyst regained more than 90% NO conversion after being washed with 10 wt.% H2SO4 for 30 min.

关键词： deactivated TiO 2 -ZrO 2 -CeO 2 /ATS regeneration method catalytic performance glass furnace rare earths

Acid modified carrier on catalytic oxidation of dichloromethane over CeO_(2)/HZSM-5 catalysts

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Journal of Rare Earths 2022年第10期40卷 1564-1572页

作者： Mengxiang Li Jing Mo Xuanyu Gu Yue Zhou Mengjie Fan Shubao Shen Yingwen Chen college of biotechnology and pharmaceutical engineering Nanjing Tech University.Nanjing 210009China

In this study,a series of Hydrogen-Zeolite Socony Mobil-5-X(HZSM-5-X) catalysts were prepared by acid modification,then Ce/HZSM-5-X(X=0,0.2,0.4,1.0,2.0) catalysts were prepared by impregnation *** catalytic performance of the catalysts on dichloromethane(DCM) oxidation was *** different characterizations,HZSM-5-X exhibit high specific surface area,good redox ability,rich acidity and much suitable acidic site distribution after acid *** them,Ce/HZSM-5-0.4 shows better catalytic activity with the lowest by-product and the best CO_(2) *** T_(90) is 302℃ and the CO_(2) yield of T_(90) is more than 80 wt%,which demonstrates that the acid modification of carrier plays the positive effect on the catalytic capacity for DCM oxidation.

关键词： Catalytic oxidation Cerium HZSM-5 zeolite Acid treatment Dichloromethane Rare earths

Protective effect of Zhizi Huangqi Shanzha formula(栀子黄芪山楂方)on aflatoxin poisoning in mice and its effect on intestinal flora

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Journal of Traditional Chinese Medicine 2024年第5期44卷 926-933页

作者： SUN Chuanbo XU Guangpei JIANG Ping HUANG Shipping CHEN Cunwu HE Yanfei college of biotechnology and pharmaceutical engineering West Anhui UniversityLu'an 237012China

OBJECTIVE:To evaluate the protective effect of Zhizi Huangqi Shanzha formula(栀子黄芪山楂方,ZHSF)on aflatoxin-induced liver ***:The protective effect of ZHSF on the aflatoxin-induced liver injury was evaluated by histological observation,blood cell analysis,evaluation of liver function and immunity,and gut microbiota ***:ZHSF can significantly up-regulate the percentage of lymphocytes and eosinophils in the blood of Aflatoxin B1-intoxicated mice,down-regulate the levels of serum aspartate aminotransferase,alanine aminotransferase,and malondialdehyde,and recover the liver tissue *** poisoning induces a variation of the intestinal flora of mice,and ZHSF may recover the variation of intestinal flora induced by Aflatoxin *** analysis showed that the intestinal flora of mice in the intervention group was more similar to that of the control *** analysis showed that Lachnospiraceae,Desulfovibrio,and Lactobacillus may be the key flora for the pharmacological effects of ***:ZHSF may protect against aflatoxininduced liver damage,improve immunity,and inhibit oxidative stress by regulating the composition and relative abundance of intestinal flora,which makes it a promising liver-protective candidate drug.

关键词： protective effect mice liver injury aflatoxicosis gastrointestinal microbiome Zhizi Huangqi Shanzha formula

Production of Fumaric Acid from Raw Starchy Materials by Rhizopus oryzae with SSF

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过程工程学报 2013年第2期13卷 302-305页

作者：高敏徐晓康徐晴李霜 college of biotechnology and pharmaceutical engineering Nanjing University of Technology

To reduce the manufacturing cost of fumaric acid production by fermentation, four kinds of raw starchy materials were investigated, cassava powder, corn powder, degermed corn powder and starch. By comparing the nitrogen contents in them, carbon/nitrogen ratio of raw materials was the key factor affecting the fumaric acid production by Rhizopus oryzae. Based on this point, degermed corn powder was selected as the best raw starchy material for fumaric acid production. In addition, the simultaneous saccharification and fermentation (SSF) process for fumaric acid production was optimized. With degermed corn powder as substrate at 100 g/L total sugar concentration, the fumaric acid production (35.51 g/L), yield (0.355 g/g) and productivity (0.493 [g/(L.h)]) were obtained via SSF process in a 7-L fermentor.

关键词：工程微生物学微生物学研究理论

Synthesis of magnetically modified palygorskite composite for immobilization of Candida sp. 99–125 lipase via adsorption

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Chinese Journal of Chemical engineering 2015年第5期23卷 822-826页

作者： Ya Li Jicheng Hu Pingfang Han college of biotechnology and pharmaceutical engineering Nanjing Tech University Department of Environment and Resource Nantong Science and Technology College

Magnetically modified palygorskite composites were synthesized with γ-Fe2O3 dispersing on the external surface of clay mineral. The magnetic clay was characterized with Fourier transform infrared, X-ray diffrac- tion, transmission electron microscopy, and vibrating sample magnetometer. Candida sp. 99-125 lipase was immobilized on magnetic palygorskite composites by physical adsorption with enzyme loading of 41.5 mg· g^-1 support and enzyme activity of 2631.6 U· （g support）^-1. The immobilized lipase exhibit better thermal and broader pH stability and excellent reusabilitV compared with free lipase.

关键词： Magnetically modified palygorskite Immobilized lipase Adsorption Stability Reusability

Smad8 is involvement in follicular development via the regulation of granulosa cell growth and steroidogenesis in mice

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BIOCELL 2024年第1期48卷 139-147页

作者： DAOLUN YU DEYONG SHE KAI GE LEI YANG RUINA ZHAN SHAN LU YAFEI CAI college of biotechnology and pharmaceutical engineering West Anhui UniversityLu’an237012China Lu’an Academy of Agricultural Sciences Lu’an237001China college of Life Sciences Anhui Normal UniversityWuhu241000China college of Animal Science and Technology Nanjing Agricultural UniversityNanjing210095China

Background:SMAD family proteins(SMADs)are crucial transcription factors downstream of transforming growth factor beta(TGF-ß)/SMAD signaling pathways that have been reported to play a pivotal role in mammalian ***,the role of SMAD family member 8(SMAD8,also known as SMAD9),a member of the SMAD family,in mammalian reproduction remains ***:We employed RNA interference techniques to knock down Smad8 expression in mouse granulosa cells(GCs)to investigate the effects of Smad8 on GC growth and ***:Our findings revealed a significant decrease in the proliferative capacity and a substantial increase in the apoptosis rate of GCs after transfection with Smad8-siRNA for 48 *** hormone assays demonstrated a significant decrease in estradiol(E2)levels,whereas progesterone(P4)remained *** mechanistic analysis showed that the mRNA expression of proliferating cell nuclear antigen(Pcna),Cyclin D2,cell cycle-dependent kinase 4(Cdk4),B-cell lymphoma-2(Bcl-2),estrogen receptor(Er),luteinizing hormone receptor(Lhr)and cytochrome P450 family 19 subfamily A member 1(Cyp19a1)significantly ***,the mRNA of cysteine aspartate proteinase 3(Caspase 3)significantly increased,wheras Bcl2-associated X(Bax),folliclestimulating hormone receptor(Fshr)and cytochrome P450 family 11 subfamily A member 1(Cyp11a1)remained unchanged compared to the ***:This study indicates that Smad8 knockdown inhibits cell proliferation,promotes apoptosis,reduces Er and Lhr transcription,and decreases E2 production in mouse *** findings suggest that Smad8 may serve as a novel genetic marker for mammalian reproduction.

关键词： Mouse Smad8 RNA interference Granulosa cells Growth and steroidogenesis

NaY zeolites modified by La^(3+) and Ba^(2+): the effect of synthesis details on surface structure and catalytic performance for lactic acid to acrylic acid

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Journal of Rare Earths 2010年第5期28卷 803-806页

作者：闫婕余定华李恒孙鹏黄和 college of biotechnology and pharmaceutical engineering Nanjing University of Technology State Key Laboratory of Materials-Oriented Chemical engineering

Modified NaY zeolites have been widely studied and the modification metal element is normally single, while few researches have been conducted on NaY zeolites modified by two kinds of metals. In our study, a series of La3+ and Ba2+ modified NaY zeolites were synthesized through different impregnation procedures. Lactic acid dehydration to acrylic acid was selected as a probe reaction to test the catalytic performance of these zeolites synthesized. The effects of synthesis details on their pore structures an...

关键词： synthesis details acid/base lactic acid dehydration rare earths

Production and characterization of insoluble α-1,3-linked glucan and soluble α-1,6-linked dextran from Leuconostoc pseudomesenteroides G29

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Chinese Journal of Chemical engineering 2021年第11期34卷 211-218页

作者： Yiya Wang Tao Sun Yinzhu Wang Hao Wu Yan Fang Jiangfeng Ma Min Jiang State Key Laboratory of Materials-Oriented Chemical engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211800China

Exopolysaccharides can be produced by various bacteria and have important biological roles in bacterial survival depend on molecular weight,linkage,and *** this study,Leuconostoc pseudomesenteroides G29 was identified and found to produce two types of exopolysaccharides from sucrose including soluble and insoluble *** regulation of pH above 5.5,soluble a-glucan production was increased to 38.4 g∙L^(-1) from 101.4 g∙L^(-1) sucrose with fewer accumulation of lactic acid and acetic ***,the quantity of thick white precipitate,that is insoluble a-glucan,was also ***,a-glucans were prepared by enzymatic reaction with crude glucansucrases from the supernatant of G29 fermentation broth and purified for structure *** on the integration analysis of FT-IR and NMR,it was observed that soluble a-glucan is a highly linear dextran with α-1,6 glycosidic bonds while the insoluble a-glucan has 93%of α-1,3 and 7%of α-1,6 glycosidic *** results extend our understanding of exopolysaccharides production by ***,and this water insoluble α-1,3-glucan might have potential application as biomaterials and/or biochemicals.

关键词： Exopolysaccharide Glucansucrase Leuconostoc pseudomesenteroides Insolubleα-glucan a-1,3 glycosidic bond