foods Article Simultaneous Quantitative Assessment of Ochratoxin A, Patulin, 5-Hydroxymethylfurfural, and Bisphenol A in Fruit Drinks Using HPLC with Diode Array-Fluorimetric Detection Norfarizah Hanim Hassan 1, Haneen Ibrahim Ahmad Al Othman 1, Nur Rabiatutadawiah Abdul Malek 1, Musfirah Zulkurnain 2 , Bahruddin Saad 3 and Yong Foo Wong 1,* 1 School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia;
[email protected] (N.H.H.);
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[email protected] (N.R.A.M.) 2 Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; musfi
[email protected] 3 Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia;
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[email protected]; Tel.: +60-4653-403-1; Fax: +60-4657-485-4 Received: 28 September 2020; Accepted: 31 October 2020; Published: 9 November 2020 Abstract: The analysis of regulated contaminants in fruit drinks often requires suitable validated and rapid analytical methods for cost-effective food control, and is of considerable interest among the fruit beverage industry. This study demonstrated a rapid and sensitive high-performance liquid chromatography approach for the simultaneous determination of ochratoxin A (OTA), patulin (PAT), 5-hydroxymethylfurfural (HMF), and bisphenol A (BPA) in various fruit drinks. The separations were achieved using a C18 core-shell column with both photo-diode array and fluorimetric detections connected in series. A gradient system consisting of methanol and 0.1% formic acid at a flow rate of 1 1.2 mL min− , thermostated at 35 ◦C, provided fast elution with run time <9 min.