A simple method for determination of erythritol, maltitol, xylitol, and sorbitol in sugar‐free chocolates by capillary electrophoresis with capacitively coupled contactless conductivity detection

Abstract

In this work, a novel and simple analytical method using capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C D) is proposed for the determination of the polyols erythritol, maltitol, xylitol, and sorbitol in sugar-free chocolate. CE separation of the polyols was achieved in less than 6 min, and it was mediated by the interaction between the polyols and the borate ions in the background electrolyte, forming negatively charged borate esters. The extraction of the polyols from the samples was simply obtained using ultra-pure water and ultrasonic energy. Linearity was assessed by calibration curves that showed R varying from 0.9920 to 0.9976. The LOQs were 12.4, 15.9, 9.0, and 9.0 μg/g for erythritol, maltitol, xylitol, and sorbitol, respectively. The accuracy of the method was evaluated by recovery tests, and the obtained recoveries varied from 70 to 116% with standard deviations ranging from 0.2 to 19%. The CE-C D method was successfully applied for the determination of the studied polyols in commercial samples of sugar-free chocolate.

Recent advances in the application of capillary electromigration methods for food analysis and Foodomics

“…However, their determination is quite problematic due to their high pka values (in the range of 12–14), their high hydrophily and the lack of a chromophore group in their structure. Nevertheless, two different CE methodologies developed within the period covered by this work have been applied with success to the determination of different alditols in sugar‐free chocolate or alditols‐containing products (such as xylitol mother liquor, orange juice, peanut milk and chewing gum) . On the one hand, erythriol, maltitol, xylitol and sorbitol were simultaneous analyzed in sugar‐free chocolate samples by using a CZE‐C 4 D method .…”

“…Nevertheless, two different CE methodologies developed within the period covered by this work have been applied with success to the determination of different alditols in sugar‐free chocolate or alditols‐containing products (such as xylitol mother liquor, orange juice, peanut milk and chewing gum) . On the one hand, erythriol, maltitol, xylitol and sorbitol were simultaneous analyzed in sugar‐free chocolate samples by using a CZE‐C 4 D method . To do that, polyols were extracted from real sample by a simple procedure based on the use of water an ultrasonic energy.…”

Contactless conductivity detection for analytical techniques: Developments from 2016 to 2018

“…CE‐C 4 D determination of erythritol (1), maltitol (2) and xylitol (3), (IS = HEPES), in four commercial sugar‐free chocolate samples according to . Reproduced with permission from Wiley.…”

“…Although present in most examined samples, their concentrations were considerably below the safety limits [68]. (3), (IS = HEPES), in four commercial sugar-free chocolate samples according to [69]. Reproduced with permission from Wiley.…”

Magnetic resonance studies of copper (II) sorbitol complex, in solution, reveal a supramolecular structure compatible to the crystal structure

“…Sorbitol (Sorb), a hexitol stereoisomer (C 6 H 14 O 6 ), found in fruits or synthesized through the fructose reduction has been used in medicine, food, cosmetic, and chemistry . In some of these applications, sorb is employed as metal ion chelating agent (M‐Sorb) to improve the quality of electrodeposits, as building block in inorganic and organic synthesis and in medicine to treat copper and iron deficiency diseases …”