Capsaicin determination and chili sauce discrimination using low-cost and portable electrochemical sensors based on all graphite pencil electrodes. Issue 39 (8th September 2016)

• Record Type: Journal Article
• Authors: Wu, Shixin; Zeng, Jiamin; Xie, Hong; Ng, Sum Huan
• Is Part Of: Analytical methods. Volume 8:Issue 39(2016)
• Page Start: 7025
• Page End: 7029
• Publication Date: 2016-09-08
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c6ay01754a
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : Determination of capsaicin using home-made electrochemical cells with all graphite pencil electrodes (GPEs) and successful discrimination of chili sauces by principal component analysis (PCA) and k -means clustering were performed. Abstract : We developed an electrochemical cell based on all graphite pencil electrodes (GPEs) for the detection of capsaicin. The cell produced a larger detection range of 0.1–100 μM compared to other reported studies, which is necessary for real sample testing. In addition, the cell was adopted for the analysis of capsaicinoid contents in chili powder and sauces bought from the supermarket. Through data processing by principal component analysis (PCA) and k -means clustering, it is possible to differentiate between the different brands of chili sauce. The low-cost and small construction of the cell may lead to a portable electronic tongue for on-site analysis of chili products.