To explore the synergistic regulatory mechanism of gypsum micronization and the sustained-release modification of sodium hapetaphosphate.
By measuring Ca2+ release kinetics, the effects of coagulation temperature, particle size and modification treatment on gel quality were evaluated.
The results indicated that the 2000-mesh modified gypsum exhibited the best performance at a coagulation temperature of 25 ℃. The tofu achieved a hardness of 74.3 N and a water-holding capacity exceeding 89%. The water retention rate was significantly higher than that of the commercially available gluconic acid-δ-lactone and magnesium chloride groups, and the hardness was comparable to that of the gluconic acid-δ-lactone group and significantly higher than that of the magnesium chloride group (P<0.05). Kinetic analysis confirmed that the interfacial resistance established by sodium hexametaphosphate enabled a smooth and slow release of Ca2+, effectively mitigating the “burst release effect” induced by micronization.
The conclusion indicates that this process retards the rate of the calcium bridging reaction, allowing proteins to complete conformational transitions and arrange in an ordered manner prior to cross-linking. This achieves a kinetic matching between physical dispersion and chemical reaction rates,significantly enhancing the ordering and compactness of the gel structure.
| 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 |