کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7585928 | 1492043 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microfluidic paper-based chip platform for benzoic acid detection in food
ترجمه فارسی عنوان
پلت فرم تراشه مبتنی بر میکرو فلوئیدی برای تشخیص اسید بنزوئیک در غذا
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
An integrated microfluidic platform comprising a microfluidic paper-based analytical device (µPAD) and a portable detection system is proposed for the concentration detection of benzoic acid via Janovsky reaction theory. In the proposed approach, the reaction zone of the µPAD is implanted with 5â¯N sodium hydroxide and dried at 30â¯Â°C for 20â¯min. The benzoic acid sample is derived to 3,5-Dinitrobenzoic acid using KNO3 and H2SO4 at 40â¯Â°C for 40â¯min and is then dripped on the reaction zone of the µPAD. Finally, the µPAD is transferred to the portable detection system and heated at a temperature of 45â¯Â°C for 20â¯min on a hot plate to prompt a Janovsky reaction. The resulting color change of the detection zone is observed using a CMOS camera. The reaction color image is delivered to a smartphone via a connector and the benzoic acid concentration is determined using self-written RGB analysis software. The experimental results obtained using control samples with known benzoic acid concentrations in the range of 500-4000â¯ppm show that the R(ed)â¯+â¯B(lue) intensity (Y) and benzoic acid concentration (X) are related as Yâ¯=â¯â¯â0.0264 Xâ¯+â¯408.79. Moreover, the correlation coefficient is equal to R2â¯=â¯0.9953. The proposed detection platform is used to measure the benzoic acid concentrations of twenty-one commercial food samples. It is shown that the concentration measurements deviate by no more than 6.6% from those obtained using a standard HPLC macroscale method. Overall, the results presented in this study show that the proposed integrated microfluidic paper-based chip platform provides a compact and reliable tool for benzoic acid concentration measurement purposes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 249, 30 May 2018, Pages 162-167
Journal: Food Chemistry - Volume 249, 30 May 2018, Pages 162-167
نویسندگان
Chan-Chiung Liu, Yao-Nan Wang, Lung-Ming Fu, Kuan-Lin Chen,