Andrewson TS, Martin LE, Lim J, Penner MH. Chromatographic fractionation of food-grade oligosaccharides: Recognizing and avoiding sensory-relevant impurities.
Food Chem 2023;
401:134071. [PMID:
36115234 PMCID:
PMC9945451 DOI:
10.1016/j.foodchem.2022.134071]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/25/2022] [Accepted: 08/28/2022] [Indexed: 02/08/2023]
Abstract
Flash chromatography utilizing microcrystalline cellulose (MCC) stationary phases and aqueous ethanol mobile phases have shown promise for the production of food-grade oligosaccharides. The current work extends the scope of these systems by demonstrating their use for the production of food-grade maltooligosaccharide preparations enriched in high degree of polymerization (DP) components. Furthermore, it is shown herein that caution must be exercised when using these MCC-based chromatographic systems in order to avoid sensory-relevant contamination of the final oligosaccharide preparations. Such contamination, most notably off-taste, is shown to arise from impurities common to commercially available MCC that manifest under certain chromatographic scenarios. A mitigation strategy based on washing the stationary phase with appropriate aqueous-ethanol solutions (i.e., accounting for the entire mobile phase concentration range) prior to oligosaccharide fractionation is presented as a means by which to avoid contamination.
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