- All have
- Product management
- News
- Introduction led
- Corporate store
- FAQ
- Enterprise Video
- Enterprise map
BLOG
Focus on hot topics, real-time dynamics
Four economic nutritional values of frozen longan for preservation
2026-07-14
How can frozen technology enhance the economic value of longan products?
Answer: As a highly seasonal tropical fruit, longan is prone to spoilage at room temperature and typically has a shelf life of only 3-5 days. Through rapid freezing and preservation technology, not only can the shelf life of longan be significantly extended to six months or even longer, but it can also effectively break the seasonal restrictions on sales. This enables businesses to sell across seasons, avoiding slow sales and price drops caused by concentrated listings, thereby significantly improving the economic benefits and market competitiveness of their products.
What are the effects of quick freezing treatment on the retention of core nutrients in longan?
Answer: Cinnamon is rich in nutrients such as glucose, sucrose, vitamin C, potassium, and iron. The quick freezing process (usually below -18 ℃) can effectively inhibit the activity of most enzymes and microorganisms, thereby locking in nutrients and flavors for a longer period of time. Although some water-soluble vitamins (such as vitamin C) may lose about 30% with the juice during freezing and thawing, the dietary fiber, minerals (such as potassium and iron), and active ingredients such as longan polysaccharides in longan can still be fully preserved.
How to expand the processing and application scenarios of longan products through quick freezing preservation?
Answer: The freezing process will cause the water in the cells of longan fruit pulp to form ice crystals and puncture the cell wall, resulting in a soft texture and loss of the crisp and tender feeling of fresh fruit after thawing. From an economic perspective, this change in physical structure makes it no longer suitable for direct fresh consumption, but perfectly meets the needs of deep processing. Quick frozen longans are very suitable as raw materials for the food industry. They are used to cook sugared water, stew, Congee, or make creative desserts such as longans yogurt, greatly expanding the application scene of the product.
What are the advantages of quick freezing preservation in cost control compared to other processing methods?
Answer: Although traditional longan drying techniques such as sun drying or charcoal roasting can extend the shelf life, they have long processing cycles, high energy consumption, and can cause almost complete loss of vitamin C. In contrast, quick freezing preservation belongs to pure physical preservation, with a more standardized and efficient processing flow, which can maximize the preservation of the flavor and most of the nutrients of fresh fruits. This efficient processing method not only reduces the nutrient loss rate during the processing, but also provides low-cost raw material guarantee for the subsequent production of high value-added frozen longan meat or longan pulp.
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.