Abstract
A quick, simple, and reliable isocratic ultra-performance supercritical fluid chromatography-photodiode array detector (UPSFC-DAD) method was developed and validated to determine lycopene in different horticultural products. The effects of stationary phase, co-solvent, pressure, temperature, flow rate, and mobile phase additive on the separation of lycopene were evaluated. The developed method involved BEH-2EP—2.1 × 150 mm, 5 µm as the stationary phase, and CO2/MeOH 85:15 (v/v) with formic acid as the additive at 0.10% as the mobile phase. The column temperature was maintained at 45 °C, ABPR at 1800 psi, and the mobile phase’s flow rate was maintained at 1 mL/min. Under the optimized conditions, lycopene was successfully separated within 0.722 ± 0.001 min. The standard curve assayed over a range of 10 to 100 µg/mL resulted in a correlation coefficient of 0.998. The mean recoveries between 97.38% and 102.67% at different spiking levels with RSD < 2.5% were achieved. The intra and inter-day precision expressed as relative standard deviations (RSD) were found to range from 1.27% to 3.28% and from 1.57% to 4.18%, respectively. Robustness in terms of retention time (tR) and RSD were found to be 0.93 ± 0.23 min and less <2.80%, respectively. The limits of detection and quantification were 0.14 µg/mL and 0.37 µg/mL, respectively. This method was successfully applied to determine lycopene extracted from papaya, grapefruit, and bitter melon.
Highlights
IntroductionOpen chain, unsaturated carotenoid with 13 double bonds, 11 of which are conjugated and arranged in a linear array
Lycopene is an acyclic, open chain, unsaturated carotenoid with 13 double bonds, 11 of which are conjugated and arranged in a linear array
Several recent studies have been conducted among the carotenoids utilizing lycopene for food applications, such as food emulsion, extraction for fortification, and lipid oxidation [11,12,13,14,15]
Summary
Open chain, unsaturated carotenoid with 13 double bonds, 11 of which are conjugated and arranged in a linear array. It is one of the most promising bioactive compounds because of its potential to inhibit invasion of free radicals at the membrane surface, which triggers the primary defense mechanism of the human body against several chronic diseases [1,2,3,4,5]. Studies depict lycopene as a phytochemical that can play a significant role in cancer prevention and cardiovascular health [6,8,9,10]. Several recent studies have been conducted among the carotenoids utilizing lycopene for food applications, such as food emulsion, extraction for fortification, and lipid oxidation [11,12,13,14,15]
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