Full
Outline
This study analyzed the differences in nutritional composition and functional activities of five types of sweet potato stems and leaves, developed sweet potato leaf tablet candies, and conducted in vitro verification of their glucose and lipid metabolic activities. The results indicated that the variety and part had significant effects on the nutritional components and functional activities: compared with the leaves, the stems of different sweet potato varieties all showed higher dietary fiber and soluble sugar contents, among which the stems of Ningcai 18-24 had the highest contents, reaching 54.51 g/100 g and 15.35 g/100 g respectively; while the protein level in sweet potato leaves was significantly higher than that in the stem parts. In addition, the leaves of Ningcai 18-24, the leaves of Ningcai 3 and the stems of Guicai 12-557 had the highest polyphenol, flavonoid and anthocyanin contents respectively. Further, Ningcai 18-24 leaves were selected as raw materials, and the formula of the tablet candy was optimized through D-optimal mixture design (sweet potato leaf powder 76.52%, starch 14.98%, maltodextrin 4.89%, talcum powder 1.48%, xylitol 0.92%, citric acid 1.20%). It was confirmed that the tablet candy had excellent water-holding capacity, cholesterol adsorption capacity and glucose adsorption capacity, along with significant regulatory effects on glucose and lipid metabolism (α-glucosidase inhibition IC50 was 0.25 mg/mL, and the inhibition of cholesterol micelle formation was obvious). This study provided experimental basis and research foundation for the high-value utilization of sweet potato stems and leaves and the development of functional foods.
167
61
| 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
