Differences in the flocculation mechanism ofKluyveromyces marxianus andSaccharomyces cerevisiae
A study of the flocculation mechanism of aKluyveromyces marxianus strain, as compared with a strain ofSaccharomyces cerevisiae, is described. The involvement of cell wall proteins in the yeast's flocculation mechanism was studied by methyl-esterification or pepsin or acid phosphatase incubation of the cells. The influence of several ions on the flocculation mechanism was assayed. The obtained results indicated that the structure and/or the spatial arrangement of the cell wall groups involved in flocculation are not the same inK. marxianus as inS. cerevisiae.
OBJECTIVE:To establish the quality control standard of Xuebao Capsules. METHODS:Applying the technique of TLC to identify the main ingredients Fructus Psoraleae , Radix Polygoni multiflori prepared, Pericarpium Citri reticulatae, Radix Ginseng, Radix Astragali by using chemical reference substance or reference crude drug.RESULTS: Fructus Psoraleae, Radix Polygoni multiflori prepared, Pericarpium Citri reticulatae , Radix Ginseng , Radix Astragali could be detected by TLC.CONCLUSION:The methods were practical, special and reproducible.