Full
Outline
To enhance the stability and bioavailability of astaxanthin (AST), soy protein isolates (SPI) were used as the raw material to prepare SPI/chitosan (CS) composite nanoparticles for the encapsulation of AST. The study investigated the effect of CS on the encapsulation efficiency of AST. Ca2+ were then introduced as stabilizer to investigate their effect on the stability of the SPI/CS/AST nanodispersion and to elucidate the underlying mechanism. The results demonstrated that at a CS concentration of 0.6 mg/mL, the encapsulation efficiency of AST reached 59.57%, representing an 11% increase compared to samples without CS. Under this CS concentration, when Ca2+ was added at 0.2 mg/mL, the AST encapsulation efficiency further rose to 73.55%, a 20% improvement over samples without Ca2+. Moreover, at a storage temperature of 4 ℃, the retention rate of AST increased by 14% with Ca2+ addition. Under ultraviolet irradiation, 0.2 mg/mL Ca2+ provided the most effective protection for AST within the nanodispersion, enhancing retention by 23% compared to those without Ca2+. Furthermore, the retention rates of encapsulated AST in simulated gastric and intestinal fluids reached 78.35% and 67.18%, respectively. Ultraviolet and fluorescence spectroscopy analysis revealed that Ca2+ enhanced stability by influencing hydrogen bonds and hydrophobic interactions in the nanodispersion through ionic bridging, electrostatic neutralization, and conformational regulation. In summary, this study successfully established a highly stable AST nano-delivery system through the synergistic effect of SPI/CS composite wall materials and Ca2+, providing a theoretical basis for the application of AST in the development of functional foods.
89
41
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
