Drying in the open sun
Fruits release moisture when exposed to direct sunlight and moving air. This is a processing method and not a sign of no additives or guaranteed quality.
How it works
The sun heats the product, the water evaporates, and the air carries away the moisture. Therefore, warmth, low humidity and ventilation are important at the same time; Hot weather alone is not enough.
History
Long history of crop storage
Drying is one of the oldest methods of preserving food. Raisins remain a famous example of sun-dried fruit.
From open area to protected trays
The FAO review linked the development of the method to raised platforms and protection of raw materials from contamination. They improve the process, but do not make the weather a manageable quantity.
What changes in the product
Texture depends on final moisture content
The name of the method does not indicate whether the fruit will be soft or firm. For purchase, it is more useful to test the texture and information about the moisture content of the finished batch.
Color and aroma may vary
Prolonged exposure to light, air and heat can change color and smell; sensitive substances may also be lost. Dark color in itself does not prove either damage or lack of processing.
Need protection after drying
Dried fruits should be protected from moisture during storage. Condensation in packaging is a reason to check the condition of the product, and not consider it a normal feature of solar drying.
Pros
- Solar heat is used to remove water.
- Suitable for common dried fruits in suitable dry climates.
- It does not require turning the fruit into puree: whole berries and halves are possible.
Limitations
- Quality and speed depend on the weather.
- The opened product needs protection from dust, insects and birds.
- Overnight dampness can return moisture to the fruit.
- The method does not promise complete preservation of vitamins.
Where is it used?
- Raisin.
- Fruits suitable for external drying in dry climates.
When to choose
- You need fruits for compote, stuffing or a regular snack, and their texture suits you.
- The seller can explain the preparation of raw materials and storage conditions.
When to choose another option
- There are traces of mold, foreign matter or damaged packaging.
- The inscription “in the sun” is used instead of an answer about the composition and origin.
What to know before buying
- Have sugar, oil or sulfites been added?
- Did you dry on protected trays or an open area?
- What period and storage conditions are specified by the manufacturer?
- Are there seeds and how much of the edible part is included in the purchase?
Sources
- Sun Drying — University of Georgia · NCHFP
- Drying — University of Georgia · NCHFP
- Improved sun-drying and solar drying: basic considerations and selected applications — FAO · D. Adair
- Drying Fruits and Vegetables — University of Georgia Cooperative Extension
- Packaging and Storing Dried Foods — University of Georgia · NCHFP