Dehydrating fruit is a great way to preserve it and enjoy it for longer, while also creating a healthy snack. However, it can be tricky to know exactly how long to dehydrate different types of fruit for optimal results. This article will provide a guide to dehydrating times for various fruits, as well as tips for preparing and storing dehydrated fruit.
When dehydrating fruit, it’s important to consider the water content and thickness of the fruit slices, as well as the temperature and humidity of the environment. For example, fruits with higher water content, such as watermelon or grapes, will take longer to dehydrate than fruits with lower water content, such as apples or bananas. Additionally, thicker slices will take longer to dehydrate than thinner slices. By following a guide to dehydrating times, you can ensure that your fruit is fully dehydrated without becoming overly dry or burnt.
In addition to providing dehydrating times for various fruits, this article will also cover tips for pretreating fruit, such as soaking it in lemon juice or blanching it, to help preserve its colour and flavour. It will also provide advice on how to store dehydrated fruit to ensure it stays fresh and tasty for as long as possible. Whether you’re a seasoned dehydrating pro or just starting out, this guide will help you create delicious, healthy snacks that can be enjoyed anytime, anywhere.

Dehydrating Fruit Times for Common Fruits
Apples
Apples are a great fruit to dehydrate because they are easy to prepare and have a long shelf life. To dehydrate apples, slice them into 1/4 inch thick pieces and place them on the dehydrator trays. Set the temperature to 135°F and let them dry for 6-12 hours, depending on the thickness of the slices. The apples should be leathery and slightly pliable when done.
Bananas
Bananas are another popular fruit to dehydrate. To prepare them, slice them into 1/4 inch thick pieces and dip them in lemon juice to prevent browning. Place them on the dehydrator trays and set the temperature to 135°F. The drying time for bananas is around 8-12 hours, depending on the thickness of the slices. The bananas should be leathery and slightly chewy when done.
Grapes
Grapes can be dehydrated whole or cut in half. To prepare them, wash and dry the grapes and remove any stems. Place them on the dehydrator trays and set the temperature to 135°F. The drying time for grapes is around 18-24 hours, depending on the size of the grapes. The grapes should be slightly wrinkled and chewy when done.
Pineapple
Pineapple is a tropical fruit that can be dehydrated for a sweet and tangy snack. To prepare it, remove the skin and core and slice it into 1/4 inch thick pieces. Place the pineapple on the dehydrator trays and set the temperature to 135°F. The drying time for pineapple is around 8-12 hours, depending on the thickness of the slices. The pineapple should be leathery and slightly chewy when done.
Strawberries
Strawberries are a popular fruit to dehydrate because they make a delicious and healthy snack. To prepare them, wash and dry the strawberries and remove the stems. Slice them into 1/4 inch thick pieces and place them on the dehydrator trays. Set the temperature to 135°F and let them dry for 6-12 hours, depending on the thickness of the slices. The strawberries should be leathery and slightly chewy when done.
Dehydrating fruit is a great way to preserve it for later use. By following these guidelines for common fruits, you can enjoy healthy and delicious snacks all year round.

Factors Affecting Dehydrating Time
Thickness of Slices
The thickness of fruit slices is a critical factor that affects the dehydration time. Thin slices dehydrate faster than thick ones due to their larger surface area, which allows more moisture to evaporate. As a general rule, slices should be no thicker than 1/4 inch. If the slices are too thick, the fruit may not dehydrate evenly, leading to spoilage.
Humidity and Temperature of Environment
The humidity and temperature of the environment in which the fruit is being dehydrated can also affect the dehydration time. Ideally, the humidity should be low, and the temperature should be between 120°F and 140°F. Higher temperatures can cause the fruit to cook instead of dehydrate, while lower temperatures can prolong the dehydration process.
Variety of Fruit
Different varieties of fruit have varying levels of moisture, sugar, and acidity, which can affect the dehydration time. For example, fruits with high sugar content, such as figs and dates, tend to dehydrate faster than fruits with low sugar content, such as apples and pears. Similarly, fruits with high acidity, such as citrus fruits, tend to dehydrate faster than fruits with low acidity, such as bananas.
It is important to note that these factors are interrelated, and changes in one factor can affect the others. For example, if the humidity is high, the temperature may need to be increased to compensate for the slower dehydration rate. It is essential to monitor the dehydration process regularly to ensure that the fruit is dehydrating evenly and not over-drying or under-drying.
In summary, the thickness of slices, humidity and temperature of the environment, and variety of fruit are all critical factors that affect the dehydration time. By understanding these factors and monitoring the dehydration process, one can achieve optimal results when dehydrating fruit.
Tips for Successful Dehydrating
Pre-treatment of Fruit
Before dehydrating fruit, it is important to wash and dry them thoroughly. If the fruit has a tough or inedible skin, it should be peeled. Some fruits may require pre-treatment to prevent browning or to enhance flavour. For example, apples can be treated with a solution of lemon juice and water to prevent browning. Pineapple can be soaked in a sugar syrup to enhance sweetness.
Uniformity of Slices
To ensure even drying, it is important to slice fruit uniformly. This can be achieved by using a mandolin slicer or a sharp knife. The thickness of slices should be consistent, typically around 1/4 inch. Thicker slices will take longer to dry, while thinner slices may become too brittle.
Proper Storage of Dehydrated Fruit
After dehydrating, the fruit should be cooled and stored in an airtight container. It is important to check the fruit for moisture content before storing it. Fruit that is not completely dry can spoil or develop mould. If moisture is present, the fruit should be returned to the dehydrator for further drying.
Dehydrated fruit can be stored for several months at room temperature. However, it is important to check the fruit periodically for signs of spoilage. If the fruit develops an off smell, flavour, or appearance, it should be discarded.
By following these tips, the dehydrating process can be successful and result in delicious, healthy snacks.