D-Trehalose anhydrous, commonly referred to as just trehalose, is a disaccharide sugar consisting of two glucose molecules linked together. Here are some key points about D-trehalose anhydrous:

1. Natural Occurrence: Trehalose is found in various natural sources, including plants, fungi, and certain microorganisms. It serves as a source of energy and as a protectant against stressors such as drought, heat, and freezing.

2. Molecular Structure: Trehalose has a unique, non-reducing disaccharide structure. It is formed by an α,α-1,1-glycosidic bond between the two glucose units, resulting in a stable and highly soluble molecule.

3. Functional Properties: Trehalose has several functional properties that make it valuable in various applications. It has excellent stability, even under high temperatures and acidic conditions, making it suitable for use in processed foods. Trehalose also has the ability to retain moisture and protect against protein denaturation, which has led to its use as a stabilizer in certain products.

4. Sweetness and Caloric Content: Trehalose is about 45-60% as sweet as sucrose (table sugar). It provides approximately 4 kilocalories per gram, similar to other carbohydrates. However, its low sweetness intensity may limit its use as a primary sweetener.

5. Applications: Trehalose is used in various food, beverage, and pharmaceutical applications. Its moisture retention properties make it useful in preserving the texture and quality of baked goods, confectionery, and dried or dehydrated products. It can also serve as a cryoprotectant, helping to maintain the stability and integrity of frozen foods, proteins, and pharmaceuticals during freezing and thawing processes.

6. Safety and Regulatory Status: Trehalose has been approved for use as a food ingredient by regulatory authorities in many countries, including the United States, European Union, and Japan. It is generally regarded as safe for consumption. However, individuals with specific medical conditions such as glycogen storage disease should avoid excessive consumption of trehalose due to its potential to release glucose during digestion.

As always, it is important to consume any food ingredient, including trehalose, in moderation as part of a balanced diet. If you have specific dietary concerns or medical conditions, it is advisable to seek guidance from healthcare professionals or a registered dietitian.