naa a22 4500 510725546 CHVBK 20180411082933.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11947-011-0774-5 doi (NATIONALLICENCE)springer-10.1007/s11947-011-0774-5 Detection of Pesticides in Fruits by Surface-Enhanced Raman Spectroscopy Coupled with Gold Nanostructures [Elektronische Daten] [Bin Liu, Peng Zhou, Xiaoming Liu, Xin Sun, Hao Li, Mengshi Lin] There is growing concern in recent years for consumers about contamination of pesticides in fruits due to increasing use of pesticides in fruits. The objective of this study was to use surface-enhanced Raman spectroscopy (SERS) to detect and characterize pesticides extracted from fruit surfaces. Gold-coated SERS-active nanosubstrates were used for SERS measurement. Three types of pesticides (carbaryl, phosmet, and azinphos-methyl) widely used in apples and tomatoes were selected. Significantly enhanced Raman signals of pesticides were acquired by SERS from the extract of fruit samples and exhibited characteristic patterns of the analytes. Multivariate statistical methods such as partial least squares and principal component analysis were used to develop quantitative and qualitative models. SERS was able to detect all three types of pesticides extracted from fruit samples at the parts per million level. The study of detection limit demonstrated that at 99.86% confidence interval, SERS can detect carbaryl at 4.51ppm, phosmet at 6.51ppm, and azinphos-methyl at 6.66ppm spiked on apples; and carbaryl at 5.35ppm, phosmet at 2.91ppm, and azinphos-methyl at 2.94ppm on tomatoes. Most of these detection limits meet the maximum residue limits established by Food and Agriculture Organization of the United Nations and World Health Organization. Satisfactory recoveries (78-124%) were achieved for samples with concentrations at and larger than the detection limit. These results demonstrate that SERS coupled with novel SERS-active nanosubstrates is a rapid, sensitive, and reliable method for detection and characterization of chemical contaminants in foods. Springer Science+Business Media, LLC, 2012 Gold nanosubstrates nationallicence SERS nationallicence Pesticide nationallicence Apple nationallicence Tomato nationallicence Liu Bin School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut Zhou Peng School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut Liu Xiaoming School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut Sun Xin Department of Mechanical and Aerospace Engineering, University of Missouri, 65211, Columbia, MO, USA aut Li Hao Department of Mechanical and Aerospace Engineering, University of Missouri, 65211, Columbia, MO, USA aut Lin Mengshi Food Science Program, Division of Food Systems & Bioengineering, University of Missouri, 65211, Columbia, MO, USA aut Food and Bioprocess Technology Springer-Verlag 6/3(2013-03-01), 710-718 1935-5130 6:3<710 2013 6 11947 https://doi.org/10.1007/s11947-011-0774-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11947-011-0774-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Bin School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut NATIONALLICENCE 700 1- Zhou Peng School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut NATIONALLICENCE 700 1- Liu Xiaoming School of Food Science and Technology, Jiangnan University, 214122, Wuxi, Jiangsu Province, China aut NATIONALLICENCE 700 1- Sun Xin Department of Mechanical and Aerospace Engineering, University of Missouri, 65211, Columbia, MO, USA aut NATIONALLICENCE 700 1- Li Hao Department of Mechanical and Aerospace Engineering, University of Missouri, 65211, Columbia, MO, USA aut NATIONALLICENCE 700 1- Lin Mengshi Food Science Program, Division of Food Systems & Bioengineering, University of Missouri, 65211, Columbia, MO, USA aut NATIONALLICENCE 773 0- Food and Bioprocess Technology Springer-Verlag 6/3(2013-03-01), 710-718 1935-5130 6:3<710 2013 6 11947 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer