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Objective To prepare Chuzhou chrysanthemum polysaccharide CCPS-3-1 gel and investigate its relevant properties. Methods Acidic polysaccharide CCPS-3-1 was isolated and purified from Chuzhou chrysanthemum and mixed with CaCl2 solution to form a gel via ionic crosslinking. The gel's characteristics were comprehensively analyzed using scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and differential scanning calorimetry. Additionally, treatment with urea and ethylenediaminetetraacetic acid was employed to further elucidate its gel strength and gelling mechanism. Results CCPS-3-1 solution was relatively stable within a pH range of 6.0-8.0. Upon induction by CaCl2, the CCPS-3-1 gel exhibited good transparency, moderate hardness, and high stability. The gel network had a dense, smooth, and uniform structure. Moreover, the thermal stability and crystalline structure were enhanced. Rheological experiments revealed that as the CaCl2 concentration increased, the apparent viscosity and storage modulus of the CCPS-3-1 gel also increased. In addition, the loss tangent (Tanδ) decreased with increasing CaCl2 concentration, indicating the formation of weak gels at all tested concentrations. Furthermore, electrostatic interactions played a crucial role in the formation of the gel network structure. Conclusion The Chuzhou chrysanthemum polysaccharide CCPS-3-1, isolated and purified in this study, forms a gel upon CaCl2 induction. Its gelling mechanism likely involves the synergistic effects of intermolecular hydrogen bonding and Ca2+ crosslinking. These findings provide a theoretical foundation for the application of CCPS-3-1 gel in food, pharmaceutical, and other fields.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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