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FOAM MAT drying is an energy-efficient method that helps in converting liquid or semi-liquid foods like fruit purées, vegetables, dairy foods, and botanicals into high-quality and stable powders. The technique helps in supporting food product development and provides shelf-stable ingredients along with ensuring the retention of nutritional and sensory quality. Formation of a porous foam structure prior to drying makes it possible to extract moisture quickly at lower temperatures while retaining nutrients and color, taste, and bioactive components. Being one of the leading food drying technologies, the Foam Mat Drying Method is used for food powder manufacturing, especially for heat-sensitive and clean-label products, with growing adoption across the food industry in 2026. [1]

FOAM-MAT Drying: The Future of Food Drying Technology for High-Quality Powder Production

Recall July 24, 2026

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FOAM MAT drying is an energy-efficient method that helps in converting liquid or semi-liquid foods like fruit purées, vegetables, dairy foods, and botanicals into high-quality and stable powders. The technique helps in supporting food product development and provides shelf-stable ingredients along with ensuring the retention of nutritional and sensory quality. Formation of a porous foam structure prior to drying makes it possible to extract moisture quickly at lower temperatures while retaining nutrients and color, taste, and bioactive components. Being one of the leading food drying technologies, the Foam Mat Drying Method is used for food powder manufacturing, especially for heat-sensitive and clean-label products, with growing adoption across the food industry in 2026. [1]

What is FOAM-MAT Drying?

FOAM-MAT Drying is a unique dehydration method that involves the transformation of liquids and semi-liquids into a stable foam prior to its drying in hot air atmosphere. Through the expansion of the evaporative area of moisture, the Foam mat drying process allows faster drying at reduced temperatures along with retaining of all nutrients, colors, flavors and other compounds that have low stability in heat conditions. The foam is then converted into easily dissolvable powders through milling. Now, Foam Mat Drying in Food Processing is commonly applied in the production of fruits, vegetables, dairy, herbs and functional food powders, allowing the contributing to the development of modern food formulation approaches in a variety of applications.

Why is the Foam Mat Drying Method Important?

The Foam Mat Drying Method meets the increasing demands on high-quality, shelf-stable and minimally processed food ingredients. With the help of this method compared to conventional drying methods, less time and thermal treatment is needed to preserve vitamins, antioxidants, colors and flavors. In 2026, due to benefits provided by Foam Mat Drying, the method will be increasingly adopted as it contributes to energy efficiency and cost-effective food powder manufacturing for clean-label and heat-sensitive products. [2]

Foam Formation: The Core of FOAM-MAT Drying

The formation of foam is the most significant process in the Foam Mat Drying Method, since it affects the efficiency of drying, quality of powders obtained and stability of final products. Food foam is a complicated colloid system where bubbles of gases are dispersed in a liquid medium with the help of thin layers of liquid, which are called lamellae, providing structural support during drying.

Quality of the foam can be assessed based on the following parameters:

  • Bubbles size and distribution
  • Foam density and expansion
  • Foam stability
  • Mechanical strength
  • Surface tension

The smaller and more evenly distributed bubbles form more dense and stable foams, thus allowing for a more efficient evaporation of the liquid while preventing the destruction of the structure. Nevertheless, the food foams are inherently unstable due to the high level of interfacial energy and are divided into transient foams that decompose in seconds or metastable foams that can be stable for several hours or days depending on the conditions. Achieving a metastable foam is essential for producing high-quality powders with consistent drying performance, improved texture, and excellent rehydration properties. [3]

Industry Insight (2026): The AI-enabled whipping systems and digital control are becoming common to achieve more stable foam and higher density, improving batch consistency, drying efficiency, and overall production performance.

Common Foaming Agents, Hydrocolloids, and Stabilizers

The choice of foaming agents and hydrocolloids is very crucial in the FOAM-MAT Drying method for foam stabilization and improvement of drying and powder qualities. These ingredients help maintain foam structure during drying, while clean label and plant-based agents are becoming more popular in response to new consumers’ demands.

Egg Albumen

Egg albumen is the most effective natural foaming agent due to its outstanding ability to form stable foams. The foaming agent forms high-quality foams which enhance drying effectiveness and quality of powder formed. Whipping for long periods results in smaller and more uniform foam bubbles leading to high foam stability. The effectiveness of egg albumen varies with the pH and process conditions, hence the need for alternative foaming agents based on proteins.

Foam Mat Drying Process

Methylcellulose

Methylcellulose is a natural hydrocolloid derived from cellulose which helps stabilize foam by heat gelling property to prevent collapsing during drying. The major advantages of methylcellulose include:

  • High water holding ability
  • Foam stabilization
  • Better structural stability
  • High quality of powder

Gum Arabic

Gum Arabic is a natural hydrocolloid that is popularly used for stabilizing foams and emulsions. Proteins present in Gum Arabic make the foams more stable and help in creating stable and flowing powders. Some benefits of using gum Arabic are:

  • Improved stability of foam
  • High-quality emulsion
  • Enhanced powder flowability
  • Increased storage stability

It can be blended with other hydrocolloids such as xanthan gum and tragacanth gum for improving foam stability and storage stability. [4]

Applications of Foam Mat Drying in Food Processing

Foam Mat Drying in Food Processing is a technology which helps in producing high quality, shelf stable powders from liquid and semi-liquid foods while maintaining the nutritive and sensory attributes of food items. This technology finds increasing use in beverage formulation, functional foods, dairy products and nutraceutical ingredients.

Application Category

Common Products

Major Applications

Fruit Powders

Mango, Banana, Papaya, Pineapple, Berries

Beverages, Bakery, Dairy, Confectionery, Baby Foods, Nutraceuticals

Vegetable Powders

Tomato, Beetroot, Pumpkin, Carrot, Spinach

Soups, Sauces, Seasonings, Snacks, Ready-To-Cook foods

Dairy Ingredients

Yogurt powder, Milk Concentrates, Whey Proteins, Plant based Milk Powders

Dairy products, Nutritional Supplements, Beverage mixes

Functional & Nutraceutical Ingredients

Herbal Extracts, Botanical Powders, Mushroom Extracts, Plant Proteins

Functional Foods, Sports Nutrition, Dietary Supplements

Heat-Sensitive Ingredients

Probiotics, Natural flavors, Natural colors, Bioactive compounds

Clean-label foods, functional beverages, premium ingredients

Spray Drying vs Foam Mat Drying

The choice of either spray drying vs foam mat drying will be based on the nature of the food being processed and the desired product quality.

Parameter

FOAM-MAT Drying

Spray Drying

Suitable Products

Liquid, puree, viscous foods

Low-viscosity liquids

Drying Temperature

Lower

Higher

Nutrient Retention

High

Moderate

Flavor Preservation

Excellent

Moderate

Equipment Cost

Moderate

High

Production Scale

Small to medium

Large-scale industrial

Fruit Purees

Highly suitable

Limited

Sticky Products

Excellent

Often challenging

Though spray drying continues to remain the better option in large scale industrial production of liquids, FOAM-MAT Drying is more suitable for premium food ingredients, powder products, botanical extract production and products requiring superior nutritional and sensory quality. [5]

Real-World Case Study: Foam Mat Drying of Tropical Red Fruit Blend

A 2023 study published in the journal Foods investigated FOAM-MAT Drying technique as an effective method for obtaining powdered blends from pulps of acerola, guava, and pitanga fruits. Different types of stabilizers (gum Arabic, guar gum, and gelatin) were used at various drying temperatures ranging from 50°C to 80°C to identify the optimal processing conditions.

Key Findings

  • Drying temperature 60°C was established as the optimum one for producing fruit powder of high quality.
  • The mixture of egg albumen and gelatin made the most stable foam and the best powder quality.
  • This powder had low moisture content, low water activity, high solubility, and high content of bioactive compounds. The obtained fruit powder is perfect for long-term storage and commercial beverage product development, fruit-based ingredients, and other functional food applications.

Industry Insight: This real-world case study proves that choice of the right foaming agents and the proper conditions of drying are critical to producing stable and nutritious fruit powder with improved shelf life and functional quality using the Foam Mat Drying Method.

Conclusion

The FOAM-MAT Drying is an efficient and sustainable food drying technique that provides high-quality powder products while maintaining their nutritional values, taste, and functionality. The versatility of this technology allows its application in various industries such as fruits and vegetables, dairy, nutraceuticals, and functional foods.

Do you want to create innovative powdered foods or beverages?

Food Research Lab offers end-to-end beverage product development services, including formulation, process optimization, pilot-scale trials, stability testing, and regulatory support to help bring your products from concept to commercial success.

Frequently Asked Question

FOAM-MAT Drying is a dehydration process, during which liquid or semi-liquid foods are turned into stable powders through drying of the foam under hot air conditions.

Compared with traditional drying techniques, the FOAM-MAT Drying technique has faster dehydration, better nutrient retention, better retention of flavors and colors, better rehydration and lower energy costs.

It is best for fruit purees, vegetables extracts, dairy products, herbs extracts, plant-based drinks and nutraceuticals ingredients.

A lower temperature during the drying process and reduced processing time will result in preserving nutrients, antioxidants, natural colorants, and flavoring agents.

FOAM-MAT Drying is more applicable for viscous/sticky/heat-sensitive foods, whereas Spray Drying is more appropriate for large-scale processing of low-viscosity liquids products.

References

  1. Çalışkan Koç, G., Tekgül, Y., Yüksel, A. N., Khanashyam, A. C., Kothakota, A., & Pandiselvam, R. (2022). Recent development in foam-mat drying process: Influence of foaming agents and foam properties on powder properties. Journal of Surfactants and Detergents, 25(5), 539–557. https://doi.org/10.1002/jsde.12608
  2. Kalambe, S., & Guhe, S. (2026). Foam mat drying of perishable products: A critical review of process parameters, product quality, and sustainable prospects. Sustainable Food Technology, 4(1), 133–152. https://doi.org/10.1039/D5FB00203F
  3. Ardian, M., Ramachandran, P., Joshi, P., Srivastava, S., & Prakash, R. (2026). Foam-mat drying: A cost-effective technology for preserving vitamin C rich fruits. Retrieved from https://www.researchgate.net/publication/399865956_FOAM-MAT_DRYING_A_COST-EFFECTIVE_TECHNOLOGY_FOR_PRESERVING_VITAMIN_C_RICH_FRUITS
  4. Argade, K., Salve, V., Kamble, K., Kad, V., & Shelke, G. (2026). Foaming agents in foam mat drying of fruits: Mechanisms, effectiveness, and functional applications – A review. Journal of Agriculture Research and Technology, 51, 94–102. https://doi.org/10.56228/JART.2026.51112
  5. Khatri, B., Hamid, S. R., et al. (2024). Sustainable drying techniques for liquid foods and foam mat drying. Discover Food, 4, 166. https://doi.org/10.1007/s44187-024-00223-3

 

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