- All have
- Product management
- News
- Introduction led
- Corporate store
- FAQ
- Enterprise Video
- Enterprise map
BLOG
Focus on hot topics, real-time dynamics
Three advantages of freeze-drying thistle
2026-07-23
Q1: What are the outstanding advantages of freeze-drying thistle in terms of retaining nutrients and active ingredients?
A1: Able to retain heat sensitive nutrients and high biological activity to the greatest extent possible. Artichokes are rich in active ingredients such as anthocyanins, inulin, and polyphenols, which are highly sensitive to heat. The freeze-drying process is carried out under low temperature (usually rapid pre freezing at -35 ℃ to -40 ℃) and high vacuum environment, where water directly sublimates from solid to gas, effectively avoiding the damage of high temperature to active ingredients. Research has shown that this dual freeze-drying technique can significantly improve the absorption rate of the main functional components of thistle by the human body, and better exert its health benefits such as liver protection and blood lipid lowering.
Q2: How does the freeze-drying of thistle perform in terms of physical form and rehydration?
A2: It can maintain its original form and has excellent instant rehydration performance. During the freeze-drying process, the water inside the thistle freezes into ice crystals and sublimates, leaving behind a large number of micropores and forming a loose sponge like skeleton. This structure not only keeps its volume and shape basically unchanged, but also quickly absorbs moisture when it comes into contact with water. Therefore, the freeze-dried powder of thistle can be completely rehydrated within minutes or even seconds, maximizing the restoration of the original color, aroma, taste, and physical properties of fresh thistle.
Q3: What are the benefits of freeze-drying thistle in terms of storage and safety?
A3: Long term safe storage can be achieved without the need for preservatives. Freeze drying technology can thoroughly dehydrate the thistle (with a water content usually controlled below 5%). At such low water activity, microorganisms are difficult to survive, so there is no need to add any preservatives at all. As long as the packaging has good moisture and moisture resistance (such as nitrogen filled packaging), the freeze-dried products of thistle can be safely stored at room temperature for up to 24 months, greatly facilitating daily consumption, carrying, and logistics transportation
PREVIOUS:
Contact Us
E-mail:
sales@syguanfeng.com
Tel:
+86 15088506234
Address:
South Industrial Park of Dongguan, Shangyu District, Shaoxing City,Zhejiang Province,China.
GUANFENG, your customization experts!
GUANFENG FOOD MACHINERY - leading supplier of integrated food processing solutions
Copyright© 2024 ZHEJIANG GUANFENG FOOD MACHINERY CO.,LTD.