To construct a delivery system loaded with quercetin (QT), enhance QT’s solubility and stability.
This study used soy protein isolates (SPI) and fucoidan (Fuc) as raw materials, and constructed composite nanoparticles using the pH-driven method to encapsulate QT. The different quality ratios of SPI-QT-Fuc composite nanoparticles (SQF NPs) were evaluated based on particle size, potential, loading rate, embedding rate, freeze-drying reconstitution properties and microscopic morphology. The physicochemical properties of SQF NPs were analyzed using fluorescence spectroscopy and Fourier transform infrared spectroscopy. The stability changes of SQF NPs under different environmental conditions (temperature, light, salt concentration, pH and storage time) were investigated to simulate gastrointestinal digestion and evaluate the gastrointestinal stability and bioavailability of SQF NPs.
The particle size of composite nanoparticles was (130.60±1.03) nm, the potential was(–33.14±2.35) mV, and the encapsulation rate reached 80.05% when the SPI/Fuc/QT mass ratio was 10:2:1. The binding forces of composite nanoparticles with uniform size distribution were the interplay of hydrogen bonds, hydrophobic interactions, and electrostatic forces. Compared to free QT, composite nanoparticles significantly enhanced the solubility, photothermal stability and gastrointestinal utilization of QT.
The composite nanoparticles, built upon SPI and Fuc, significantly improves the solubility, stability of QT, and will provide a promising avenue for the efficient application of QT in the food industry.
| 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 |