HPP Questions? We Have Answers.

High-Pressure Processing (HPP), also known as high-pressure pasteurization, is a non-thermal food preservation method that uses extremely high levels of hydrostatic (water-based) pressure to inactivate harmful bacteria, molds, yeasts, and other microorganisms in food and beverages. Unlike traditional pasteurization methods that rely on heat, HPP preserves the integrity of the product while effectively ensuring food safety and extending shelf life.

In the HPP process, prepackaged food or beverages are placed in a specialized chamber filled with cold water. The chamber applies pressure up to 87,000 psi, equivalent to six times the pressure found at the deepest parts of the ocean. This intense pressure disrupts the cellular structure of pathogens and spoilage organisms, rendering them inactive while maintaining the product’s taste, texture, color, and nutritional value.

Manufacturers increasingly turn to HPP for several key benefits:

Extended shelf life – HPP extends product shelf life from as little as a few days up to several months, increasing product availability. While every product is unique and must undergo testing to determine an exact shelf life, most products will see a shelf-life increase of at least 5 times what the product would have without undergoing the HPP process.

Enhanced food safety – HPP effectively destroys harmful pathogens found in food that make people sick, including E. coli, Salmonella, and Listeria, helping to prevent foodborne illnesses and costly recalls. Inactivating these microorganisms also keeps products from spoiling prematurely.

Improved product quality – HPP helps maintain the sensory attributes of food, including taste, texture, color, and nutritional value, far better than high-heat pasteurization or the use of chemical preservatives. Unlike ultra-high heat processes, HPP minimizes nutrient loss, preserving the vitamins, minerals, and enzymes that are often degraded by thermal methods.

Clean ingredient label – using HPP typically eliminates the need for chemical preservatives in products. While each product varies and must take into consideration properties such as the product’s pH, HPP is effective at destroying spoilage organisms that make foods and beverages go bad quickly, often removing the need for added preservatives.

Reduction in food waste – because HPP preserves fresh foods and beverages that would otherwise have a very limited shelf life, HPP prevents these products from needing to be thrown out after only a few days. This keeps large volumes of product out of landfills.

Lower impact on environment – applying HPP to products requires significantly less energy than using heat pasteurization. It also uses less water, and the water can often be reused again and again.

For a deeper dive into the HPP process and its applications, contact us today.

HPP is a versatile technology that works effectively across a wide range of food and beverage categories. Its ability to enhance food safety, extend shelf life, and preserve quality makes it a top choice for clean-label manufacturing.

Meat and Poultry

• Deli meats: Sliced turkey, ham, roast beef
• Cooked items: Sausages, hot dogs
• Fresh/raw: Ground meats and whole muscle cuts (cooked or uncooked)
• Value-added: Marinated and seasoned meats

Seafood

• Shellfish: Oysters, lobster, crab, shrimp
• Smoked products: Smoked salmon and related fish
• Raw items: Sushi and sashimi-grade fish

Dairy Products

• Soft cheeses: Mozzarella, ricotta
• Liquid dairy: Yogurts, milk
• Dips and dressings: Dairy-based spreads and sauces

Beverages

• Juices: Fresh and cold-pressed
• Blends and smoothies: Fruit, vegetable, and plant-based
• Milks: Nut (almond, coconut, soy), seed, and grain (oat, rice)
• Functional drinks: Sports and wellness beverages

Fruits and Vegetables

• Ingredients: Pureed fruits and chopped vegetables
• Starches: Items like potatoes and corn

Foods for Kids

• Purees and on-the-go pouches
• Transition foods and snacks

Dips, Sauces, and Spreads

• Avocado-based: Guacamole
• Blended dips: Salsa, hummus
• Dressings and marinades

Ready-to-Eat Meals

• Meals: Pasta dishes, rice bowls, curries
• Soups and stews
• Wet salads: Chicken, tuna, and similar items

Plant-Based & Alternative Proteins

• Meat alternatives: Burgers, sausages, nuggets
• Fermented proteins: Tofu, tempeh

Pet Food

• Fresh or raw pet meals
• Cooked pet food

Products Unsuitable for HPP

Certain foods and beverages are not well-suited for HPP due to their moisture content, pH level, fat composition, or physical structure.

• Dry products, such as powders: HPP requires a minimum water activity level of 0.30 Aw to effectively inactivate microorganisms. Dry products lack sufficient moisture for the process to work.
• Low-acid products with a pH of 4.6 or higher: These products are at risk for the growth of Clostridium botulinum spores, which can produce harmful toxins. Low-acid products that cannot be made more acidic are better suited for heat-based pasteurization or preservatives.
• High-oil products, such as peanut butter: While these may appear liquid, their high oil content limits water activity, making HPP ineffective for extending shelf life or destroying pathogens. Nut and seed butters can, however, be used as ingredients in HPP’d products.
• Bakery products, such as bread, cookies, and cakes: Air pockets in baked goods are compressed under high pressure, leading to undesirable compaction or crushing of the product.
• Whole fresh produce, including leafy greens: Delicate items like lettuce and spinach are highly susceptible to physical damage during HPP, resulting in wilting and loss of quality.

Considerations for Product Development

For products that don’t meet HPP requirements, alternative preservation methods, such as thermal pasteurization or formulation adjustments (e.g., increasing acidity), may be more effective.

Testing and formulation adjustment are critical for manufacturers seeking to use HPP effectively and safely.

No. HPP does not work on frozen products. For HPP to be effective, products must be fully thawed and held at refrigerated temperatures before processing.

Why Frozen Products Are Not Suitable

• Ice Crystals Block Pressure Effects: Ice prevents the even transmission of pressure throughout the product. This can leave untreated areas, compromising the microbial reduction and overall effectiveness of the process.

Freezing After HPP

• Products can be frozen immediately after HPP treatment to preserve freshness and extend shelf life. This is common for proteins, raw pet foods, and other high-moisture products.

Proper thawing before HPP and careful freezing after treatment are both essential to maintaining food safety, texture, and product integrity.

When evaluating whether a product is compatible with HPP, it’s essential to understand the difference between water content and water activity (Aw). Both involve moisture, but each plays a different role in determining HPP effectiveness.

Water Content

Definition: The total amount of water present in a product, expressed as a percentage of its weight.

Relevance to HPP: Water content does not directly influence HPP’s ability to inactivate microorganisms. Even products with high water content may not be ideal for HPP if the water is not readily available for microbial activity.

Water Activity (Aw)

Definition: A measure of the availability of free, unbound water in a product for microbial growth. It is expressed as a value between 0 (completely dry) and 1 (pure water).

Relevance to HPP:

• HPP is effective only in products with sufficient water activity (typically ≥ 0.30 Aw).
• Low water activity inhibits microbial growth, making HPP unnecessary or ineffective for products like dry powders or high-oil foods.

How the Difference Affects HPP

• Products with high water content but low water activity (e.g., peanut butter) may not benefit from HPP, as the microorganisms cannot thrive in such environments.
• Conversely, products with adequate water activity (e.g., juices, deli meats) provide the necessary conditions for microbial inactivation during HPP.

Applications in HPP Suitability

• Ideal for HPP: Foods and beverages with high water activity, such as fresh juices, salsas, and deli meats, are excellent candidates.
• Not Suitable for HPP: Dry or oily products with low water activity, such as crackers, peanut butter, and dry powders, are poor candidates for HPP.

Understanding water activity helps manufacturers determine if their products are safe, effective, and economically viable candidates for HPP.

Need help evaluating your product? Contact the experts at APC to determine HPP suitability.

HPP is not a sterilization process. It does not eliminate all microorganisms, such as some spores, which are highly resistant to even extreme pressure. However, HPP effectively reduces the presence of illness-causing and spoilage microorganisms, including E. coli, Listeria, and Salmonella, which are primary concerns for food safety, quality assurance, and spoilage.

Sterilization requires the complete elimination of all microorganisms, including spores, which usually demands high heat, chemical stabilizers, or preservatives. As a high-pressure pasteurization method, HPP prioritizes the preservation of sensory and nutritional quality while significantly improving food safety and shelf life.

While not sterilization, HPP often eliminates the need for chemical preservatives in products designed for refrigerated distribution.

Microbial Reduction

HPP typically achieves a 5-log reduction in microorganisms. This means it reduces the microbial load by 99.999%, a level sufficient to make food safe for consumption under most regulatory and industry standards.

Why C. botulinum Is a Concern

The bacterial spores HPP does not destroy include those of Clostridium botulinum. These spores, under the right conditions, can become active bacteria and produce neurotoxins that are harmful to the central nervous system.

• C. botulinum spores are most prevalent on the surfaces of fruits and vegetables.
• Products like salsa, baby food, and cold-pressed juices are particularly at risk if not properly processed, pasteurized, and handled.

Managing the Risk of C. botulinum

• HPP-treated products must maintain a pH below 4.6, as C. botulinum cannot grow in high-acid environments.
• Low-acid foods (pH ≥ 4.6) are unsuitable for HPP unless their formulation is adjusted to increase acidity.

Solutions for Safe Product Formulation

To reduce the risk of C. botulinum:

• Work with experienced food and beverage labs to adjust product formulations.
• Increase acidity levels through natural or approved additives (such as citrus juices or citric acid) to meet safety standards.

APC’s expert food safety team and partner labs can help manufacturers develop safe, natural formulations that prevent spore growth.

For more information on food safety and C. botulinum prevention, visit FDA’s Botulism Guidelines.

A validation or inoculation study is a critical step in ensuring the safety and efficacy of high pressure processing for specific food and beverage products. These studies evaluate whether HPP can achieve the desired level of microbial reduction to meet food safety standards.

What Is a Validation Study?

Purpose: To verify that HPP parameters (e.g., pressure level, hold time, and temperature) effectively inactivate harmful microorganisms in a specific product.

Process:

• The product is tested under HPP conditions to determine microbial inactivation levels.
• Results are analyzed to ensure compliance with regulatory and industry safety standards.

What Is an Inoculation Study?

Purpose: To confirm the effectiveness of HPP against specific target pathogens, such as E. coli, Listeria monocytogenes, or Salmonella.

Process:

• The product is intentionally inoculated with a known quantity of the target microorganism.
• It is then subjected to HPP to measure the reduction of pathogens under controlled conditions.
• Results are evaluated for compliance with FDA, USDA, or industry safety standards.

Does Your Product Need a Validation or Inoculation Study?

Your product may require one of these studies if:

• It is a high-risk product (e.g., ready-to-eat foods, fresh juices, or items with low acidity).
• It is a new product being introduced to the market.
• Regulatory agencies or industry standards mandate proof of microbial safety.

What These Studies Do

• Food Safety Compliance: Ensures the product meets FDA, USDA, industry, and global safety requirements.
• Consumer Protection: Validates that the product is safe for consumption and free from harmful microorganisms.
• Optimization: Helps determine the most effective HPP parameters for your product, ensuring quality and shelf life.

APC’s Role in Validation and Inoculation Studies

APC’s food safety team partners with accredited labs to guide you through validation and inoculation studies. We help you:

• Understand study requirements
• Coordinate lab testing
• Interpret results to support safe, compliant product launches

For more details on validation or inoculation studies, contact us to discuss your product’s specific needs and safety goals.

HPP does not make products shelf-stable. All HPP-treated products must be refrigerated, with the cold chain never broken at any time. Many can also be frozen to further extend shelf life.

The shelf life of products treated with HPP depends on several factors, including the product’s initial microbial load, types of microorganisms present, HPP hold time, and storage conditions.

Examples of Shelf-Life Extension

• Fresh, Never-Heated Products: Cold-pressed juices, raw plant and animal proteins, and dips like salsa and guacamole typically see their shelf life extended from a few days to several weeks or months.
• Cooked Products: Deli meats, ready-to-eat proteins, side dishes, and prepared meals can last several additional months without added preservatives.

Storage Guidelines

To ensure maximum shelf life and food safety, HPP-treated products must be:

• Stored at or below 40°F (4°C)
• Handled in accordance with food safety regulations
• Kept frozen for extended storage when appropriate

Maintaining the Cold Chain

While HPP dramatically reduces harmful pathogens, maintaining proper cold-chain conditions is essential to preserve freshness and prevent recontamination or spoilage.

HPP is a non-thermal food preservation method, which means it does not rely on high temperatures to achieve microbial inactivation. This has major advantages for preserving a product’s nutritional integrity.

Nutrient Preservation

Because HPP avoids the use of heat, it retains significantly more of the naturally occurring vitamins, minerals, and enzymes than traditional thermal pasteurization. This includes:

• Vitamin C
• B Vitamins (e.g., B1, B2, B6, B12)
• Polyphenols and other plant-based antioxidants
• Enzymes important for digestion and bioactivity

Benefits of HPP for Nutrient-Dense Foods

• Minimizes nutrient loss compared to thermal processing
• Supports clean-label and health-focused product claims
• Delivers fresh flavor and natural color without sacrificing nutrition

HPP is an ideal choice for brands looking to deliver fresh-tasting, nutrient-dense products.

In most cases, yes. HPP significantly reduces, or even eliminates, the need for chemical preservatives by using ultra-high water pressure to inactivate pathogens and spoilage organisms.

Clean-Label Advantage

HPP enables manufacturers to offer:

• Simpler, more natural ingredient lists
• Clean-label products that align with consumer demand for fewer artificial additives
• Shelf-life extension without the use of synthetic preservatives

Role of Product Formulation

While HPP is highly effective, formulation still affects results. One of the most critical factors is pH level:

• Lower pH (high acidity) enhances microbial inactivation, making HPP even more effective.
• Acidic products like fresh juices, salsas, and dips often require no additional preservatives after HPP.

When Preservatives May Still Be Needed

• Products with higher pH levels or borderline microbial stability
• Situations where shelf-life targets are especially long or handling conditions are inconsistent

Importance of Testing

Every product is unique. To ensure safety and performance:

• Conduct microbial testing and shelf-life studies
• Consider validation or inoculation studies to verify results without preservatives

In most cases, no. HPP preserves the natural taste and texture of foods and beverages exceptionally well. Because HPP uses cold water pressure instead of heat, it avoids the flavor degradation and texture changes often associated with traditional thermal pasteurization.

Unlike thermal pasteurization, which can dull natural colors or cause pigment breakdown, HPP uses only cold water pressure, so visual quality is preserved.

Sensory and Visual Benefits of HPP

• Preserves delicate flavors and aromas
• Maintains natural color and texture
• Avoids “cooked” notes or breakdown of structure
• Preserves bright, fresh colors in juices, fruits, vegetables, and sauces
• Reduces browning and oxidation in products like guacamole or avocado-based dips
• Maintains clarity and brightness in beverages and prepared meals
• Slows oxidative degradation, which delays discoloration until after the product is opened and exposed to air

Examples

• Cold-pressed juices retain vibrant orange, red, and green tones longer than heat-treated versions
• Guacamole stays green and appealing without added preservatives
• Deli meats, dips, and wet salads maintain their original color, enhancing freshness perception

Product-Specific Considerations

While most foods perform well under HPP, some products may experience minor sensory changes depending on their composition, structure, or packaging. For example:

• Emulsions (e.g., salad dressings or creamy dips) may require formulation adjustments.
• Aerated foods can lose structure under pressure.

Testing for Sensory Impact

APC recommends starting with an organoleptic (sensory) test to assess:

• Flavor
• Texture
• Color
• Aroma

Our team can help interpret the results and, if needed, guide you through formulation improvements or packaging adjustments to optimize post-HPP product quality.

Product Suitability

Not all products are compatible with HPP. Ideal candidates have:

• Adequate water activity (typically ≥ 0.30 Aw)
• Structure and packaging that can withstand high pressure

Commercial Benefits

• Enhances shelf appeal in refrigerated cases
• Supports clean-label claims by reducing need for artificial color stabilizers
• Improves consumer perception of freshness and quality

There is no federal requirement in the U.S. to disclose that a product has undergone HPP, and most products on the market do not carry an explicit HPP label. However, many manufacturers choose to leverage the benefits of HPP as a competitive advantage, especially in premium, clean-label, or health-conscious categories.

Why Brands Choose to Promote HPP

• Clean-label appeal: HPP allows brands to eliminate or reduce synthetic preservatives, resulting in shorter, simpler ingredient lists.
• Consumer perception: Shoppers often associate additive-free labels with fresher, more natural processing methods, even if HPP isn’t explicitly stated.

Cold Pressure Council (CPC) Verified Logo

Companies that are members of the Cold Pressure Council (CPC) may use the Verified Cold Pressure logo if they:

• Are CPC members in good standing
• Have completed third-party validation of their HPP process

This logo helps communicate that the product:

• Has been treated with HPP for food safety and freshness
• Meets industry best practices for process verification
• Is free from misleading preservatives or processing claims

HPP as a Brand Differentiator

Even without mandatory labeling, HPP is increasingly used as a value-added signal in categories where:

• Shelf life, safety, and freshness are critical
• Consumers seek minimally processed and refrigerated products
• Transparency and premium positioning support brand trust

High Pressure Processing (HPP) requires packaging that can withstand extreme hydrostatic pressure without rupturing or leaking. Several types of plastic packaging materials are specifically designed for use in HPP environments.

Products must be packaged in flexible, water-resistant materials. Common formats include high-barrier plastic films and containers. Packaging must remain sealed and intact during pressurization to prevent contamination.

Flexible Plastic Pouches

• Made from high-density polyethylene (HDPE), polypropylene (PP), or laminated films
• Withstand high pressure and prevent oxygen or gas exchange
• Flexible format allows more products to fit into the HPP vessel per cycle, reducing processing costs
• Common applications: deli meats, sauces, dips, and baby food squeeze pouches

Rigid Plastic Containers

• Constructed from PET, HDPE, or PP
• Suitable for ready-to-eat meals, wet salads, cold-soaked oats, soups, and salsas

Laminated Films

• Used to seal rigid containers
• Must be secure and pressure-resistant to prevent water from entering the package
• Improper sealing can compromise safety and product integrity

Plastic Materials Compatible with HPP

• HDPE: Durable, food-safe, and highly pressure-resistant
• PP: Strong and flexible, ideal for a variety of food packaging uses
• PET: Lightweight and robust, commonly used for beverages and food trays
• Polycarbonate (PC): Rigid and clear, often used for cold-pressed juice bottles

Testing Packaging Before Production

Choosing the right packaging is critical to maintaining safety, quality, and shelf life during HPP. Packaging should always be tested in pilot runs to ensure compatibility with HPP conditions before commercial production.

HPP utilizes ultra-high hydrostatic pressure, up to 87,000 psi (600 MPa), to inactivate harmful microorganisms and extend shelf life without using heat. The process uses cold water, maintaining the product’s temperature and preserving its sensory and nutritional quality. It does not rely on elevated temperatures like traditional heat-based pasteurization.

Understanding Adiabatic Heat in HPP

Although HPP involves extremely high pressure, it can generate adiabatic heat: a temporary, localized increase in temperature during the process. However:

• This heat does not cook the product.
• It does not alter sensory qualities such as taste, texture, or color.
• The temperature rise is minimal and dissipates quickly once pressure is released.

How Adiabatic Heat Differs from Thermal Processing

Adiabatic Heat:

• Generated by pressure, not an external heat source
• Short-lived, typically raising temperatures by only a few degrees
• Does not degrade nutrients or cause sensory damage

Thermal Processing:

• Involves sustained exposure to high external temperatures
• Can alter flavor, texture, and nutritional value

Benefits of HPP’s Non-Thermal Nature

• Preserves vitamins, minerals, and enzymes
• Retains fresh taste, vibrant color, and natural texture

This makes HPP ideal for minimally processed, clean-label, and fresh foods.

Key Features of HPP Equipment

• Specialized pressure vessels designed to safely contain sealed food or beverage products during pressurization
• Cold water systems that surround the products and transmit pressure evenly
• Automated loading/unloading systems for high-throughput and operational consistency
• Precision controls for pressure hold times and safety validation
• Reinforced machine construction to withstand repeated extreme pressure cycles
• Water recycling systems to lower environmental impact and cost

Yes. Products treated with high-pressure processing (HPP) must comply with regulatory standards set by the FDA and USDA. Each product undergoes an evaluation process to identify and address potential food safety risks.

Regulatory Process Overview

1. Scientific Research

   Regulatory agencies review scientific data to understand risks and benefits of ingredients, production methods, and pasteurization processes. This helps identify potential hazards, allergens, and contaminants.

2. Risk Assessment

   • Evaluates the health effects of ingredients or contaminants.
   • Determines safe consumption levels.
   • Identifies vulnerable populations (e.g., infants, pregnant women, individuals with health conditions).

3. Rulemaking

   Agencies establish rules based on risk assessments and research findings.

4. Public Input

   Stakeholders, including industry representatives, consumer groups, and health professionals, provide feedback and submit relevant data.

5. Compliance and Enforcement

   Agencies ensure adherence to regulations through:

   • Inspections.
   • Product sampling.
   • Label and claim reviews.
   • Issuing warnings, recalls, or legal actions if necessary.

How to Ensure Compliance

Collaborating with an experienced food and beverage lab and following the recommendations of APC’s food safety team helps minimize regulatory risks and ensures products meet all required standards.

For further details on regulatory requirements, refer to FDA Guidance for Food Manufacturers.

A Hazard Analysis and Critical Control Points (HACCP) plan is a systematic approach to food safety that identifies, evaluates, and controls hazards throughout the production process. It is a globally recognized framework mandated by the FDA and USDA for ensuring the safety of food products.

Key Elements of a HACCP Plan

1. Hazard Analysis:

   • Identifies potential biological, chemical, and physical hazards in food production.
   • Assesses the likelihood and severity of these hazards.

2. Critical Control Points (CCPs):

   • Identifies steps in the production process where controls can prevent, eliminate, or reduce hazards to safe levels (e.g., cooking, cooling, or HPP).

3. Critical Limits:

   • Establishes measurable parameters (e.g., temperature, pressure, time) that must be met at each CCP to ensure safety.

4. Monitoring Procedures:

   • Outlines how to monitor CCPs to ensure critical limits are met consistently.

5. Corrective Actions:

   • Details steps to take if a critical limit is not met, ensuring food safety is not compromised.

6. Verification:

   • Confirms that the HACCP plan is effective in controlling hazards through audits, testing, and validation studies.

7. Record-Keeping:

   • Documents all aspects of the HACCP plan, including hazard analysis, CCP monitoring, and verification activities, to demonstrate compliance.

Purpose of a HACCP Plan

• Ensures Food Safety: Proactively identifies and mitigates hazards to prevent foodborne illnesses.
• Compliance: Meets regulatory requirements established by the FDA, USDA, and international food safety organizations.
• Consumer Confidence: Demonstrates a commitment to producing safe, high-quality food products.
• Risk Management: Reduces the likelihood of recalls, legal actions, and reputational damage caused by unsafe products.

APC’s Commitment to HACCP

At APC, we embed HACCP principles into every aspect of our HPP and co-manufacturing operations. From hazard identification to process verification, our expert team ensures that every product meets the highest food safety standards.

For more information on HACCP plans and how they can benefit your food safety program, contact us to discuss your needs.

HPP is typically more expensive on a per-unit basis than traditional preservation methods, such as heat pasteurization or chemical additives. The total cost of HPP depends on factors like product type, packaging, volume, and the level of microbiological testing or validation required. However, these upfront costs are often offset by long-term operational and strategic advantages.

What Influences HPP Cost?

• Product type and complexity
• Packaging materials and compatibility
• Volume processed per run
• Microbiological testing and validation needs

Benefits That Justify the Investment

HPP delivers operational and strategic value that can offset cost:

• Reduced spoilage
• Significantly reduced recall risk
• Extended refrigerated shelf life
• Improved inventory management and lower shrink
• Access to more retail channels and premium pricing opportunities
• Enhanced product taste, texture, and clean-label positioning

Cost-Efficient HPP with APC

Installing and maintaining HPP systems requires a significant capital investment (often in the millions) and ongoing technical oversight.

At APC, we offer HPP as a per-pound service, making advanced food safety accessible to:

• Emerging brands and startups
• Boutique producers seeking clean-label advantages

Larger companies also benefit by:

• Avoiding capital investment in HPP equipment
• Eliminating operational complexity, staffing, and maintenance needs

Brands that partner with HPP service providers like APC gain access to:

• Advanced HPP systems
• On-site manufacturing, packaging, and HPP services
• Expert maintenance and quality assurance

Supply Chain Savings

When customers manufacture, HPP, and assemble products under one roof at APC, incremental HPP costs are often offset by:

• Lower freight and cold-chain logistics costs
• Reduced refrigeration and storage expenses
• Faster time to market through consolidated operations

HPP offers significant environmental advantages compared to both traditional heat pasteurization and untreated “fresh” products. By using cold water pressure instead of heat or chemicals, HPP achieves food safety and shelf-life goals with a much smaller environmental footprint.

Compared to Traditional Thermal Pasteurization

• Lower energy consumption: HPP avoids continuous heating and cooling cycles, reducing energy demand
• Water efficiency: The same cold water is recycled for multiple HPP cycles
• Less refrigeration required: Extended shelf life reduces the need for refrigerated transport and storage
• No chemical preservatives: Reduces reliance on synthetic additives that may carry environmental risks

Compared to Non-Pasteurized Foods

• Reduces food waste: Fresh, untreated products like deli salads or store-made meals spoil quickly, generating large volumes of waste
• Extends freshness naturally: HPP significantly increases the shelf life of perishable products

Sustainability and Resource Conservation

By extending shelf life without thermal damage, HPP helps prevent millions of pounds of food waste annually, conserving:

• Water, land, and energy used in food production
• Labor and logistics costs tied to short shelf life
• Greenhouse gas emissions from food decomposition in landfills

A Smarter, Cleaner Path Forward

For food manufacturers looking to align with sustainability goals, reduce operational waste, and meet rising consumer expectations for environmentally responsible practices, HPP offers a smarter, cleaner path forward.

Partnering with a laboratory that specializes in HPP offers significant advantages in product safety, quality assurance, and regulatory compliance.

1. Understanding HPP’s Unique Mechanisms

• Non-Thermal Microbial Inactivation: HPP inactivates microorganisms through pressure, not heat, requiring labs that understand how pressure affects specific pathogens and spoilage organisms.
• Preservation of Product Characteristics: HPP retains the sensory and nutritional qualities of food. Specialized labs evaluate these factors accurately, without assumptions based on heat or chemical preservation.

2. Tailored Shelf-Life Studies

• Addressing Microbial Challenges: Some pressure-resistant microorganisms, such as spore-forming bacteria, may survive HPP. Expert labs design shelf-life studies to manage these risks effectively.
• Packaging Compatibility: HPP can impact packaging integrity. Experienced labs evaluate how packaging materials interact with pressure to ensure product safety and durability.

3. Specialized Equipment and Protocols

• HPP Simulation: Dedicated equipment and protocols replicate HPP conditions for accurate pre- and post-process testing.
• Parameter Optimization: Expert labs help determine optimal pressure, hold time, and temperature settings to balance microbial safety and product quality.

4. Food Quality Expertise

• Texture, Flavor, and Color Analysis: HPP affects sensory qualities differently than heat or chemical treatments. Specialized labs provide actionable insights to maintain product appeal.
• Nutritional Verification: Labs with HPP expertise confirm nutritional claims, ensuring compliance and enhancing marketing potential.

5. Regulatory Guidance and Compliance

• Navigating HPP-Specific Standards: HPP products have unique regulatory requirements. Experienced labs help companies meet food safety standards and avoid compliance issues.

6. Problem Solving for HPP-Specific Challenges

• Pressure-Resistant Pathogens: Specialized labs understand which microorganisms may survive HPP and how to address them.
• Post-HPP Contamination Mitigation: Expert labs develop protocols to minimize risks during handling and packaging, addressing the non-sterilizing nature of HPP.

What an HPP-Experienced Lab Provides

Collaborating with a lab experienced in HPP helps food companies:

• Reduce regulatory risk
• Ensure food safety and quality
• Streamline testing and product development
• Meet clean-label and consumer expectations with confidence