Novel method of propyl gallate determination in rapeseed oil using CdSe/ZnS quantum dots

• DOI: 10.1002/ejlt.201500453
• Publication Date: 2016-03-19T07:21:09Z
• Authors: Krzysztof Dwiecki; Łukasz Tomczyk; Małgorzata Nogala...; Krzysztof Polewski
• Keywords: Propyl gallate

The objective of the study was to develop a CdSe/ZnS quantum dots (QD) based fluorescence method for determination synthetic antioxidant propyl gallate in rapeseed oil. is on quenching as result effective formation host‐guest inclusion complexes between analyte and β‐cyclodextrin (β‐CD) coating dots. developed successfully applied determine PG oil followed by SPE extraction phenolic compounds. average recovery range 100.87–104.87%, what confirms accuracy method. technique selective presence sinapic acid, gallic albumin, glucose, methanol. limit detection 63 μM quantification amounted 184 μM, allows detecting at level 3.15 mg/kg combination with proposed solid phase extraction. Practical applications : thanks simplicity measurement relatively short time analysis may be beneficial alternative HPLC assay. application described includes oils professional manufacture heat‐treated foods, where Maximum Permitted Level established 200 (according EC regulation No 1333/2008) well screening vegetable household use, which use this prohibited. assay easy both industry labs research development.