Abstract
Abstract Exopolysaccharides (EPSs), produced by lactic acid bacteria (LAB), have been used primarily to improve the quality and taste of food, also possess a variety of unique biological functions, such as immunoregulation and anti-tumor activities. The diversity of molecular structural characteristics of LAB-generated EPSs represents one of the main factors responsible for this plethora of functions. Accordingly, the structural analysis of the EPSs produced by LAB is the prerequisite and basis for examining its functional and structure-activity relationships. In this report, we summarized the current progress of key methodologies involved in the structural analysis of LAB-generated EPSs, including their isolation, purification, primary structure and advances in structural research. A comprehensive discussion regarding the application of chemical analysis, instrument analysis and computer aided technology in the structure analysis of LAB-generated EPSs was provided. Further, the future development of the research on the structure of LAB-generated EPSs was also presented.
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