Abstract:To improve sanzan gum use in the food industry, it is essential to elucidate the differences in the basic components and processing techniques between two types of sanzan gum (FZ-200 and FZ-400) exhibiting varying functional characteristics. The results showed that moisture and fat contents of FZ-200 were slightly higher than those of FZ-400, whereas their protein and ash contents were relatively similar. The infrared spectra of the two types of sanzan gum were similar, with a large number of bound hydroxyl groups and α- and β-configurations of pyranose. The DSC thermal analysis of FZ-200 showed three exothermic peaks at 122.8, 181.2, and 225.9 ℃, whereas that of FZ-400 showed two peaks at 152.1 ℃ and 228.6 ℃. The low mass fraction of the sanzan gum solution exhibited characteristics of a standard pseudoplastic fluid. When the mass fraction of sanzan gum exceeded 0.3%, gel formation began, and at equivalent mass fractions, the gel strength of FZ-200 exceeded that of FZ-400. With the increase in the mass fraction of sanzan gum, its emulsification index increased, and its emulsifying ability was enhanced. The highest emulsification index occurred at a mass fraction of 0.25% for FZ-200, reaching a maximum of 100%. At equivalent mass fractions of sanzan gum, FZ-200 exhibited superior emulsification index and gel strength than FZ-400, indicating greater suitability for practical applications and customer-specific requirements.