Product Introduction
Freeze-dried longan cubes are made from fresh longan fruits that have undergone a freeze-drying process, which removes water while preserving flavor and nutrients. This results in a product with an extended shelf life and concentrated taste, ideal for various applications. The cubes are lightweight and easy to store, making them a practical option for consumers and food manufacturers alike.
Production Process
The production of freeze-dried longan cubes involves several key steps. First, fresh longan fruits are selected and washed. The fruits are then peeled, and the pulp is extracted. Next, the longan pulp is quick-frozen. This frozen pulp is then placed in a freeze-drying chamber, where the water is sublimated under low pressure and temperature. Finally, the freeze-dried longan is cut into cube shapes and packaged.
Nutritional Composition Table
| Nutrient | Amount per 100g |
|---|---|
| Calories | ~286 kcal |
| Carbohydrates | ~75g |
| Dietary Fiber | ~5g |
| Sugars | ~65g |
| Protein | ~5g |
| Vitamin C | ~50mg |
| Potassium | ~600mg |
| Iron | ~0.5mg |
Note: Nutritional values may slightly vary based on specific product and processing methods.
Product Benefits and Functions
Freeze-dried longan cubes are rich in nutrients and offer several health benefits. Longan is a good source of Vitamin C, supporting immune function and acting as an antioxidant. The fruit also contains minerals like potassium, which is important for maintaining healthy blood pressure. Additionally, longan contains antioxidants, which help protect the body against oxidative stress and inflammation [1].
Product Application Scenarios
Freeze-dried longan cubes can be used in a variety of applications. They make a convenient snack on their own and can be added to trail mixes, cereals, and granola bars. In beverages, they can be used to flavor teas and infusions. The food industry utilizes them in baked goods, desserts, and confectionery items for added flavor and nutritional value.
Botanical Source
Longan (Dimocarpus longan) is a tropical tree belonging to the soapberry family, Sapindaceae. The fruit is native to Southeast Asia and is cultivated in various countries, including China, Thailand, and Vietnam. The longan fruit is similar to lychee, though it has a distinct flavor profile [2].
Packaging and Storage
Freeze-dried longan cubes should be packaged in airtight, moisture-proof containers to maintain their quality and prevent moisture absorption. Optimal storage conditions include a cool, dry place away from direct sunlight and heat. When stored properly, the product can maintain its quality for up to 12-18 months.
Citations
[1] Luo, W., Zhao, M., Yang, B., & Shen, J. (2010). Chemical composition and antioxidant properties of longan pulp. International Journal of Food Science & Technology, 45(8), 1666-1675.
[2] Menzel, C. M., & Waite, G. K. (2005). Litchi and Longan: botany, production and uses. CABI publishing.
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