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	1. Raman Spectroscopy a Promising Technique for Quantification and Monitoring Heat-induced Formation of Trans Fatty Acids in Oil
	SHI Ruyi,LIU Xiangjiang,XIE Lijuan,YING Yibin
	Chemistry 18 April 2017
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (4K B)

	Abstract:Trans fatty acids (TFAs), a type of unsaturated fatty acids that have been widely used in the food industry, have drawn considerable attention recently since consumption of TFAs significantly increased the risk of coronary heart disease, diabetes, etc. Thus, efficient and reliable detection methods for TFAs are of great importance both in industrial applications and for research purposes. In this paper, we developed a rapid and pretreatment-free quantification approach for TFA in oils using Raman spectroscopy together with some chemometric methods. The results show that the concentration of TFA in various oils can be well predicted based on the Raman spectral features in the region of 1640 - 1680 cm-1 (characteristic to C=C stretching modes), yielding a root mean square error of prediction (RMSEP) equal to 0.47%. Furthermore, in order to understand heat-induced formation of TFA during food preparation, we investigated the TFA's concentrations of the oil heated under different temperatures based on the above predication model. The result indicates its concentration increased sharply when the heating temperature exceeded 169 ℃. All these results suggest that Raman spectroscopy is a promising tool for quantification of TFAs, offering the benefit of avoiding time-consuming, costly, sample pretreatments and laborious chemical analysis.
	TO cite this article:SHI Ruyi,LIU Xiangjiang,XIE Lijuan, et al. Raman Spectroscopy a Promising Technique for Quantification and Monitoring Heat-induced Formation of Trans Fatty Acids in Oil[OL].[18 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725585


	2. Glutathione-Capped Gold Nanoparticles-Based Photoacoustic Sensor for Label-Free Detection of Lead Ions
	SHI Ruyi,LIU Xiangjiang
	Chemistry 18 April 2017
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	Abstract:The photoacoustic signal generated by laser-induced nanobubbles (PA-LINB) proved to be a sensitive tool to monitor aggregation of gold nanoparticles. Here, a simple and label-free photoacoustic method for the rapid detection of Pb2+ in aqueous phase was developed. Due to the high affinity of Pb2+ ions to glutathione, the presence of Pb2+ led to the aggregation of glutathione conjugated gold nanoparticles (GSH-GNPs). Hence, by measuring the variation of the PA-LINB signal after the aggregation of GSH-GNPs, Pb2+ can be quantified. A low detection limit for Pb2+ (42 nM) and a wide linear working range (42 ~ 1000 nM) was achieved. Furthermore, the proposed method showed good selectivity against other metal ions.
	TO cite this article:SHI Ruyi,LIU Xiangjiang. Glutathione-Capped Gold Nanoparticles-Based Photoacoustic Sensor for Label-Free Detection of Lead Ions[OL].[18 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725588


	3. The development of the material for FA detection for Environmental and Health Monitoring
	Bi Anyao,Yang Shuqi,Liu Min,Wang Xiaobo,Zeng Wenbin
	Chemistry 18 April 2017
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	Abstract:Formaldehyde (FA), as a vital industrial chemical, is widely used in building materials and numerous living products. It has become one of the most important air pollutants in residential and industrial occupational environments. Studies have shown FA is easy to react with nucleophilic material leading to the formation of DNA damage. Additionally, the Alzheimer's disease has also related to the intake of FA. The concentration of FA in our surroundings especially in urban environment has attracted increasingly attention. Thus, developing a rapid, sensitive and facile method to determine the concentration levels of FA becomes highly desirable. Up to now, many types of FA sensing methods have been applied to detect and quantify the FA concentration. Herein, we summarized the recent development of the material for FA detection and their application in environmental and health monitoring, with a focus on fluorescent probe, nanomaterials, and biomolecules. Nevertheless, the further trend of related development from lab to indoors was also proposed.
	TO cite this article:Bi Anyao,Yang Shuqi,Liu Min, et al. The development of the material for FA detection for Environmental and Health Monitoring[OL].[18 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4724917


	4. The state of art of novel gene detection technique
	Zhang Hailiang,Liu Xiaohui,Liu Meihui,Gao Tang,Yuzhao Huang,Zeng Wenbin
	Chemistry 14 April 2017
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	Abstract:Gene detection plays an important role in public health and consumer finances cause its prominent functions in precision medicine, pathogens detection and species identification. What's more,the announcement of Precision Medicine Initiative would strengthen its status further in many aspects. Therefore, rapid and simplified

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