Degradation mechanism of Saccharomyces cerevisiae β-D-glucan by ionic liquid and dynamic high pressure microfluidization

Abstract

The insolubility of Saccharomyces cerevisiae β-D-glucan in most common solvents seriously restricts its applications and recovery. In this work, ionic liquids (ILs) were used for dissolution and modification under high pressure microfluidization (HPM). ILs 1-ethyl-3-methylimidazolium acetate (EmimAc) showed good β-D-glucan dissolving capacities, which can facilitate its structural modifications to recycle under environmentally friendly conditions. However, the synergistic effect of ionic liquid and high pressure microfluidization on physiochemical properties and structure of S. cerevisiae β-D-glucan were unclearly. The objectives of this study were: 1) to study the physiochemical properties of β-D-glucan after treating by ILs and HPM; 2) to compare the essential structure and conformation of β-D-glucan after treating by ILs and HPM; 3) to provide theoretical basis for precise regulation and green manufacturing of soluble S. cerevisiae β-D-glucan.

Keywords: High pressure microfluidization; Ionic liquid; Physiochemical properties; S. cerevisiae β-D-glucan; Structure.