| Issue |
E3S Web Conf.
Volume 251, 2021
2021 International Conference on Tourism, Economy and Environmental Sustainability (TEES 2021)
|
|
|---|---|---|
| Article Number | 02049 | |
| Number of page(s) | 4 | |
| Section | Environmental Ecological Analysis and Sustainable Development Research | |
| DOI | https://doi.org/10.1051/e3sconf/202125102049 | |
| Published online | 15 April 2021 | |
Effect of drying methods on the texture properties and active ingredients in Longan flesh
Department of Logistics, Guangzhou College of Technology and Business, Guangzhou, 510850, China
* Corresponding author: 1045322924@qq.com
In order to determine the best drying method of longan flesh, the effects of different drying method (microwave drying, blast drying,vacuum freeze-drying) on the texture characteristics and active ingredients were compared. The results show that different drying methods will increase the hardness, cohesion and chewiness of longan flesh, and decrease the viscosity and elasticity to varying degrees. For active substances, the content of flavonoids and polyphenols is the largest under vacuum freeze-drying, followed by microwave drying and blast drying, but the loss of vitamin C is the opposite. On the whole, vacuum freeze-drying does not cause shrinkage of the flesh, and maintains good hardness, cohesion, chewiness and active ingredients. Comprehensive texture characteristics and changes in active ingredients, vacuum freeze drying is more suitable for drying and processing longan flesh.
© The Authors, published by EDP Sciences, 2021
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