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Diao E.,Shandong Agricultural University | Shan C.,Shandong Agricultural University | Hou H.,Shandong Agricultural University | Wang S.,Shandong Analysis and Test Center | And 2 more authors.
Journal of Agricultural and Food Chemistry | Year: 2012

The ozonolysis of aflatoxin B1 (400 μg/mL) in acetonitrile solution was conducted with an ozone concentration of 6.28 mg/L at the flow rate of 60 mL/min for different times. The results showed that ozone was an effective detoxification agent because of its powerful oxidative role. Thin-layer chromatography and liquid chromatography-quadrupole time-of-flight mass spectra were applied to confirm and identify the ozonolysis products of aflatoxin B1. A total of 13 products were identified, and 6 of them were main products. The structural identification of these products provided effective information for understanding the ozonolysis pathway of aflatoxin B1. Two ozonolysis pathways were proposed on the basis of the accurate mass and molecular formulas of these product ions. Nine ozonolysis products came from the first oxidative pathway based on the Criegee mechanism, and the other four products were produced from the second pathway based on the oxidative and electrophilic reactions of ozone. According to the toxicity mechanism of aflatoxin B1 to animals, the toxicity of aflatoxin B1 was significantly reduced because of the disappearance of the double bond on the terminal furan ring or the lactone moiety on the benzene ring. © 2012 American Chemical Society. Source


Li G.,Shandong University of Finance and Economics | Chen Y.,Shandong Analysis and Test Center
Advanced Materials Research | Year: 2013

With the development of Nano research, many excellent performances of nanotechnology are discovered. And the space for application is enlarged. Competitive sports may become another new area for the application of nanotechnology. According to the study of sports facilities and equipments, training and sports scientific instruments, sports fatigue mechanism and recovery, sports injury and nutritional supplements, genetic material, this paper states the application prospects of Nanotechnology, a high-end technology in future competitive sports development. Further more, it strives to provide theoretical support for the future competitive sports development in technological innovation so as to impel the development of future competitive sports. © (2013) Trans Tech Publications, Switzerland. Source


Wu S.,Shandong University | Yue Q.,Shandong University | Qi Y.,Shandong University | Gao B.,Shandong University | And 3 more authors.
Bioresource Technology | Year: 2011

Novel media-ultra-lightweight sludge ceramics (ULSC) employed in an upflow lab-scale biological aerobic filter (BAF) were investigated for pharmaceutical advanced wastewater treatment. The influences of the volume ratio of pharmaceutical wastewater to domestic wastewater (PW/DW), hydraulic retention time (HRT) and air-liquid ratio (A/L) on chemical oxygen demand (CODCr) and ammonium (NH4 +-N) of the effluent were investigated. When PW/DW of 4:1, HRT of 6h, and A/L of 5:1 were applied, the mean effluent concentration of NH4 +-N was 6.2mgL-1, and the maximum CODCr concentration in the effluent was 96mgL-1. Both NH4 +-N and CODCr did not exceed the limits of the national discharge standards (NH4+-N≤15mgL-1, CODCr≤100mgL-1). In addition, the BAF system showed a strong capacity of further removal from NH4 +-N of the effluent. © 2010 Elsevier Ltd. Source


Yu J.-Q.,Shandong Analysis and Test Center | Zhao L.,Reyoung Pharmaceutical Co.
Phytochemistry Letters | Year: 2016

By analyzing the steroidal content of the roots of Cynanchum stauntonii, we isolated three new C21 steroidal glycosides named cynastauosides A-C (1-3), all of which shared the 14,15-secopregnane-type skeleton. Their structures were determined on the basis of detailed spectroscopic analysis, including 2D NMR and qualitative chemical tests. Anti-inflammatory activities of compounds 1-3 were evaluated in vitro, with 2 and 3 inhibiting nitric oxide production in C57bl/6j mouse peritoneal macrophages by 17.0% and 6.9% of inhibition rate at a concentration of 10 μM, respectively. © 2016 Phytochemical Society of Europe. Source


Zhao Y.,Shandong University | Yue Q.,Shandong University | Li Q.,Shandong University | Gao B.,Shandong University | And 3 more authors.
Journal of Hazardous Materials | Year: 2010

In this research, various red mud granular adsorbents (RMGA), which were made from red mud - a kind of waste residue from the alumina industry, were manufactured under different sintering temperatures (ST). For the purpose of investigating the regeneration characteristics of them for phosphate removal, systematic experiments were carried out, including adsorption, desorption (using different desorption reagents) and resorption tests. When RMGA were desorbed by HCl solutions, the desorption efficiencies were relatively higher due to acid erosion, but the corresponding resorption capacities became small owing to extraction of effective components. Although RMGA rarely released phosphate in desorption process when being desorbed by deionised water, it performed well on resorption of phosphate afterwards. It was assumed that the lower pH in resorption process, which was caused by the reductive release of CaO into solution, contributed to a weaker competition of OH- on phosphate resorption. When NaOH solution was employed as the desorption reagent, resorption capacities of RMGA were relatively larger and increased with the increase of NaOH concentration, because OH- might ameliorate the chemical composition on the surface of RMGA potentially. In addition, several RMGA manufactured under lower ST obtained larger resorption capacities than their original adsorption capacities, because of the comparatively unstable crystal structure which led to a stronger amelioration on them. © 2010 Elsevier B.V. Source

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