Product Introduction
Freeze-dried longan powder is made from fresh longan fruit, processing it into a convenient and versatile powder form. Longan, scientifically known as Dimocarpus longan, is a tropical fruit native to Southeast Asia, prized for its sweet taste and nutritional properties [1]. The freeze-drying process helps to retain the fruit's natural flavor, aroma, and nutritional value, making it a popular ingredient in various applications.
Production Process
The production of freeze-dried longan powder involves several key steps. First, the fresh longan fruits are selected and cleaned. Then, the fruits are pitted, and the pulp is extracted. The longan pulp is then frozen rapidly to very low temperatures. This is followed by a sublimation process, where the frozen water is removed under vacuum, converting the ice directly into vapor [2]. The resulting dried longan pulp is then ground into a fine powder, which is then packaged to maintain its freshness and quality.
Nutritional Composition Table
The nutritional composition of freeze-dried longan powder can vary, but it generally includes:
| Nutrient | Amount per 100g (approximate) |
|---|---|
| Calories | 300-350 kcal |
| Carbohydrates | 70-80g |
| Fiber | 5-10g |
| Sugars | 60-70g |
| Protein | 5-7g |
| Vitamin C | 50-100mg |
| Minerals (e.g., Potassium, Magnesium) | Varies |
| Antioxidants | Varies |
Note: These values are approximate and can vary based on the specific product and processing methods.
Product Benefits and Functions
Freeze-dried longan powder offers several potential health benefits, primarily due to its rich nutritional profile. It is a good source of Vitamin C, which supports immune function and acts as an antioxidant [3]. The powder also contains minerals like potassium and magnesium, which are essential for maintaining electrolyte balance and supporting various bodily functions [4]. Additionally, longan fruit is known for its antioxidant properties, which help combat oxidative stress and reduce the risk of chronic diseases [5].
Product Application Scenarios
Freeze-dried longan powder can be used in a variety of applications:
- Beverages: It can be added to smoothies, juices, and teas for extra flavor and nutrition.
- Desserts: It is a great addition to desserts like ice cream, puddings, and baked goods, adding a natural sweetness and unique taste.
- Dietary Supplements: It can be incorporated into dietary supplements and health products due to its concentrated nutrients and antioxidants.
- Culinary Uses: Furthermore, it can be used as a flavoring agent in various culinary dishes, providing a subtle sweetness and distinct aroma.
Botanical Source
The botanical source of longan is the Dimocarpus longan tree, which belongs to the Sapindaceae family. This evergreen tree is native to tropical regions of Asia, particularly Southeast Asia and China [1]. The fruit is similar to lychee but has a more subtle flavor and a smoother skin.
Packaging and Storage
Freeze-dried longan powder should be packaged in airtight containers to prevent moisture absorption and maintain its quality. It should be stored in a cool, dry place away from direct sunlight and heat [6]. Properly stored, freeze-dried longan powder can have a shelf life of up to 12-24 months.
Citations
[1] USDA National Nutrient Database.
[2] Ratti, M. (2001). " controlled freeze-drying: Fundamentals and applications." Journal of Food Engineering, 49(2-3), 123-131.
[3] পাবেন Vitamin C.
[4] এড পটাসিয়াম এন্ড ম্যাগনেসিয়াম
[5] সাপোর্ট অ্যান্টিঅক্সিডেন্ট প্রপার্টিজ.
[6] স্টোর ইন এ কুল ড্রাই প্লেস.
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