title: Validation and comparable analysis of aluminum in the popular Chinese fried bread youtiao by wavelength dispersive XRF.
abstract: Aluminum (Al) is an element in alum commonly used as a raising agent for Chinese flour products, especially for a typical fried food youtiao. In the present study, the feasibility of wavelength dispersive X-ray fluorescence spectrometry (WDXRF) for analysis of aluminum levels in youtiao was examined. Youtiao samples spiked with known amounts of aluminum were used for calibration. Linearity, accuracy, precision, and detection and quantification limits were tested, based on three calibration curves. For further validation, test youtiao samples were analyzed by both WDXRF and inductively coupled plasma optical emission spectrometry (ICP-OES). Comparison of the two methods showed that measurement performance was not significantly different. Taken together, these results indicate that WDXRF can form the basis of a rapid and simple methodology for measuring the aluminum content of youtiao, and that it is a good candidate for replacing ICP-OES for analyzing Al-containing flour products.
authors.affiliation: Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Dongchuan Road 800, Shanghai 200240, China.
authors.forename: Hongying
authors.initials: H
authors.lastname: Hua
authors.affiliation: Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Dongchuan Road 800, Shanghai 200240, China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Jiang
authors.affiliation: Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China; Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Dongchuan Road 800, Shanghai 200240, China; Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China. Electronic address: wushimin@sjtu.edu.cn.
authors.forename: Shimin
authors.initials: S
authors.lastname: Wu
mesh_terms: D000535:Aluminum / Q000009:adverse effects / Q000032:analysis*; D001939:Bread / Q000032:analysis*; D013052:Spectrometry, X-Ray Emission / Q000379:methods*
chemical_list: D000535:Aluminum
keywords: Aluminum; Flour products; Inductively coupled plasma optical emission spectrometry; Wavelength dispersive X-ray fluorescence; Youtiao