Name: Cui，Daizong
Degree: Ph.D.
Title: Associate Professor
Position:
Phone number:
E-mail: siyu19831114@163.com
Address: Northeast Forestry University, Shaw (Yifu) Teaching Building
Education and Training:
2002-2006：Northeast Forestry University, China, B.Sc. in Biotechnology
2006-2009：Northeast Forestry University, China, M.Sc. in Microbiology
2009-2012：Northeast Forestry University, China, D.Sc. in Microbiology
Employment:
2012-2022:Northeast ForestryUniversity, Lecturer
2022- now:Northeast ForestryUniversity, Associate Professor
Honors and Awards:
19xx: The Second Class Prize of the State Natural Science Award (1stname)
201x: First Place in Teaching Competition of Heilongjiang Province
Research Specialty:
Microbiology
Courses to Teach:
Microbiology, Modern Microbiology, Special English
Research Interest:
My research interest is Microbial Special Metabolic and Environment Applications. It mainly includes the following aspects:
(1)Synthetic dyes biodegradation
Synthetic dyes have been extensively used in the textile, printing, paper, cosmetics and food industries. Industrial effluents often contain residual dye, and this residual waste usually leads to contamination of the environment. Thus, my studies are focusing on using pure strain and mixed cultue (or sludge) to decolorize various of dyes (especially the azo dyes). On the one hand, we isolate new strains which are capable of decolorizing dyes under areobic and anaerobic conditions. Then, the intracellular enzyme that is responsible for the decolorization of dyes are purified. Moreover, quinone-mediated decolorization of different azo dyes by whole cells and cell extracts from the biodegradation strain under aerobic conditions are investigated. According to the survey, this is the first time to study the quinone-mediated azo dye decolorization system under aerobic conditions. On the other hand, we try to use the mixed bacterial consortia (or sludge) to decolorize dyes. Decolorization studies show that the mixed cultures have better decolorization characteristics as compared to pure strains. In addition, high-throughput sequencing analyses are performed to provide further insight into the microbial diversity of the bacterial mixed cultures. Moreover, GC-MS and LC-MS are used to determine the intermediate products after dye decolorization. Finally, the mechanism of dye biodegradation is investigated by us.
(2)Toxicity of cadmium sulfide (CdS) nanoparticles againstEscherichia coli
It is widely accepted that the CdS nanoparticles which are synthesized by using chemical methods manifest noticeable toxicity to bacterial cells. However, little information is concerned about how some microbes can biosynthesize CdS inside their cells without suffering a badly cell damage. In my research, I chooseEscherichia colias a biomatrix to prepare CdS quantum dots.We found that the mechanisms for CdS QDs’ cytotoxicity under dark or visible light conditions are different. It is beleved that at several possible mechanisms are proposed to explain the toxicity of CdS QDs: (1) release of toxic metals from the core of nanoparticles; (2) generation of reactive oxygen species (ROS); (3) nanoparticle aggregation on the cell surface. However, if the mixture system is exposed to visible light, the generated electron-hole pair may have a vital effect to the cells. To my knowledge, there is no report of comparing the toxicity effects of CdS QDs with or without visible light.
Funding:
(1)National Natural Science Foundation of China (32371688) (P.I.)
01/01/2023 – 12/31/2026,
Title: Study on the supporting effects and mechanisms of the photoelectrons excited from volcanic lava on the microbial ecosystem
(2)National Natural Science Foundation of Heilongjiang, China (LH2022C002) (P.I.)
07/01/2022 – 07/01/2025
Title: Study on the characteristics and mechanism of magnetic hydrothermal carbon enhancement and heavy metal removal
(3)National Natural Science Foundation of Heilongjiang, China (LH2019C010) (P.I.)
07/01/2019–07/01/2021
Title: Enhancement of anaerobic biological decolorization efficiency of azo dyes by anthraquinone intermediaries and its mechanism
Publications:
1.Cui, Daizong; Zhang, Miao; Wang, Jianqi; Wang, He; Zhao, Min* ;Effect of quinoid redox mediators during azo dye decolorization by anaerobic sludge: Considering the catalyzing mechanism and the methane production,Ecotoxicology and Environmental Safety, 2020, 202: 0-110859
2.Yang, Yue; Yang, Kuo; Wang, Jueyu;Cui, Daizong*; Zhao, Min* ; Fabrication and characterization of CdS nanowires templated in tobacco mosaic virus with improved photocatalytic ability,Applied Microbiology and Biotechnology, 2021, 105: 8255-8264
3.Cui, Daizong; Wang, Jianqi; Wang, He; Yang, Yue; Zhao, Min* ; The cytotoxicity of endogenous CdS and Cd2+ions during CdS NPs biosynthesis,Journal of Hazardous Materials, 2021, 409: 0-124485
4.Wang, Yongqi; Jin, Meitong; Wang, Jueyu; Bai, Long; Yang, Yue; Dai, Haibing;Cui, Daizong*; Zhao, Min* ; Light-driven biodegradation of azo dyes byShewanella decolorationis-CdS biohybrid in wastewater lacking electron donors,Applied Microbiology and Biotechnology, 2023, 107: 447-457
5.Daizong Cui, Guofang Li, Dan Zhao, Xiaoxu Gu, Chunlei Wang, Min Zhao*, Microbial community structures in mixed bacterial consortia for azo dye treatment under aerobic and anaerobic conditions,Journal of Hazardous Materials, 2012, 221-222
6.Yu Pan, Na Li, Jianshuai Mu, Runhong Zhou, Yan Xu,Daizong Cui, Yan Wang, Min Zhao*, Biogenic magnetic nanoparticles from Burkholderia sp. YN01 exhibiting intrinsic peroxidase-like activity and their applications,Applied Microbiology and Biotechnology, 2014, 99, 703-705
7.Dan Zhao,Daizong Cui, Xi Zhang, Min Zhao*, Oxidation of aromatic compounds and bioelectrocatalysis of peroxide by a novel white laccase from Myrothecium verrucaria NF-05,Catalysis Communications, 2013, 31, 48-51
8.Daizong Cui,Min Zhao*, Guofang Li, Xiaoxu Gu, Guangyinghui Du, Chunlei Wang, Decolorization of azo dyes by a new strain CD-2 isolated from the textile dye contaminated water,Advanced Materials Research, 2011 , 113, 725-729, 26-28
Daizong Cui, Da Shen, Congrong Wu, Cong Li, Dongjin Leng, Min Zhao*, Biodegradation of aniline by a novel bacterial mixed culture AC.International Biodeterioration and Biodegradation, 2017, 125, 86-96
