1. What Is Brix?

Brix is a unit of measurement that indicates the percentage of soluble solids in a

liquid solution, primarily sugars but also including organic acids, soluble pectins, and minerals.

In tomato products, Brix is used as a convenient indicator of total soluble solids (TSS) and is closely

related to concentration, body, and perceived sweetness.

1.1 General Definition of Brix

In food science, one degree Brix (1 °Bx) is defined as:

“1 gram of sucrose in 100 grams of solution.”

While tomato juice and tomato paste do not contain only sucrose, the Brix scale is still widely used as

an approximate measure of soluble solids in tomato-based products.

1.2 Brix in Tomato Products

For tomato products such as:

• diced tomatoes in juice,
• diced tomato paste,
• tomato puree,
• tomato concentrate, and
• tomato ketchup bases,

the Brix value generally represents the concentration of:

• natural tomato sugars,
• organic acids (such as citric and malic acid),
• soluble fiber and pectins, and
• water-soluble minerals and flavor compounds.

As Brix increases, the product becomes more concentrated, thicker, and more intensely flavored.

2. What Is Diced Tomato Paste?

Diced tomato paste is a hybrid industrial product combining diced tomato pieces with

a concentrated tomato base. It offers the appearance and texture of diced tomatoes

with the strong flavor and high solids content of tomato paste.

2.1 Typical Composition

Most diced tomato paste products include:

• Diced tomato cubes or irregular pieces (usually peeled and sometimes unpeeled)
• Tomato paste or thick tomato puree as the surrounding medium
• Optional minor ingredients, such as acidity regulators or calcium salts for firmness
• Occasionally herbs, spices, or flavorings (for value-added variants)

2.2 Purpose in Industrial Applications

The aim of diced tomato paste is to provide:

• A consistent tomato solids level, expressed as Brix
• Uniform piece size for visual appeal
• Reduced cooking time at the manufacturer’s facility
• Predictable yield and viscosity in the final product

Because Brix levels are declared and tested, manufacturers can design recipes based on solids

content instead of relying on the natural variability of fresh tomatoes.

3. Why Brix Levels Matter in Diced Tomato Paste

The Brix level of diced tomato paste determines how the ingredient behaves in processing, how it

tastes, and how much it costs per unit of finished product. Several key performance factors in

industrial applications are directly linked to Brix.

3.1 Impact on Flavor Intensity

Higher Brix in diced tomato paste usually means:

• Stronger, more pronounced tomato flavor
• Higher natural sweetness from tomato sugars
• Higher acidity and more complex taste profile

This allows food formulators to achieve a richer flavor with fewer additional tomato ingredients,

reducing the need for added tomato paste or flavor enhancers.

3.2 Influence on Viscosity and Texture

Brix affects the body and thickness of the surrounding tomato medium:

• Low Brix diced bases: thinner, more watery texture
• Medium Brix diced bases: balanced viscosity, suitable for many sauces
• High Brix diced bases: thick, dense texture, ideal where reduced cooking time is needed

In diced tomato paste, the relationship between Brix and viscosity is crucial for:

• Equipment pumping behavior
• Filling performance in cans, pouches, or bowls
• Suspension of tomato pieces (preventing separation)

3.3 Economic and Yield Considerations

Brix also has a direct cost implication. Higher Brix means more tomato solids per kilogram of

ingredient. This can improve:

• Yield of finished product (more sauce from the same tomato base)
• Water addition flexibility during cooking
• Storage and transport efficiency (less water transported)

Manufacturers often compare different Brix levels using a cost per unit of tomato solids

calculation rather than cost per kilogram of product.

3.4 Process Consistency and Quality Control

Industrial sauce and soup lines are often optimized around a target viscosity and solids level.

Fixed Brix specifications for diced tomato paste help:

• Keep cooking times predictable
• Maintain stable texture batch after batch
• Avoid recipe adjustments due to raw material variability

4. Typical Brix Ranges for Diced Tomato Paste

While exact Brix specifications vary by region and application, most diced tomato paste products

fall into several broad Brix categories.

4.1 Common Brix Categories

4.2 Example Specification Parameters

A typical industrial specification for diced tomato paste will include more than just Brix.

Below is an example of how Brix sits within a broader specification:

5. How Brix Levels Are Controlled During Production

To produce diced tomato paste with consistent Brix, processors control several stages of the

manufacturing process, from raw material selection to evaporation and blending.

5.1 Raw Tomato Selection

The initial Brix level of fresh tomatoes sets the baseline for the final product. Factors that influence

the natural Brix of tomatoes include:

• Tomato variety or hybrid
• Growing climate and sunlight exposure
• Soil and irrigation practices
• Ripeness at harvest

Industrial tomato processors often favor field-grown processing tomatoes with relatively high

natural Brix to minimize energy consumption in concentration.

5.2 Juice Extraction and Pre-Concentration

Once harvested, tomatoes are:

1. Washed and sorted
2. Crushed and heated to inactivate enzymes
3. Separated into juice/pulp and skins/seeds

The juice then enters evaporation systems, such as multiple-effect evaporators, to

remove water and increase Brix to a desired tomato paste level (e.g., 28–30 °Bx or 36–38 °Bx).

5.3 Dicing and Blending

For diced tomato paste, the production sequence often includes:

1. Peeling whole tomatoes (steam or lye peeling)
2. Dicing into specified cube sizes
3. Preheating and partial dehydration (if needed)
4. Blending diced pieces with concentrated tomato paste or thick puree

The ratio between diced solids and surrounding tomato paste is carefully adjusted to hit the

target Brix value and desired piece content.

5.4 Online and Offline Brix Monitoring

Processors typically use:

• Online Brix sensors in evaporator lines to monitor concentration continuously
• Handheld or benchtop refractometers for quality checks at different points
• Laboratory verification of Brix on final packed product

Adjustments in steam pressure, flow rates, and blending ratios are made to keep the batch within

the specified Brix range.

6. Methods of Measuring Brix in Diced Tomato Paste

Accurate measurement of Brix is essential for both producers and users of diced tomato paste.

Several techniques are commonly used in the tomato processing industry.

6.1 Refractometry

The most widely used method for determining Brix in tomato products is refractometry.

A refractometer measures how much light is bent (refracted) as it passes through a sample. This

bending is correlated to the concentration of soluble solids.

6.1.1 Handheld Refractometers

These devices are:

• Simple to use in the field or factory
• Require only a small drop of sample
• Offer quick readings in °Bx

For diced tomato paste, the liquid portion of the product is usually homogenized or filtered to

provide a representative sample before measurement.

6.1.2 Digital Refractometers

Digital refractometers are often used in laboratories:

• Offer higher accuracy and repeatability
• Allow temperature compensation
• Can be integrated with data logging systems

6.2 Density and Specific Gravity Methods

In some cases, Brix can be estimated from:

• Specific gravity measurements using hydrometers
• Density calculations based on mass and volume

These methods are less common for diced tomato paste due to the presence of solids, but they may

still be used for quality control when appropriate.

6.3 Laboratory Protocols for Diced Products

Because diced tomato paste contains solid pieces, laboratory technicians often follow a standard

sample preparation method such as:

1. Weigh a representative sample of the product.
2. Blend with a known amount of water or homogenize thoroughly.
3. Filter or decant to obtain a uniform liquid fraction.
4. Use a refractometer to measure Brix of the liquid phase.

Consistent sample preparation is critical to avoid underestimating or overestimating Brix.

7. How to Choose the Right Brix Level for Your Application

Selecting the appropriate Brix level of diced tomato paste depends on the final product type,

processing method, and economic factors. Below are general guidelines for common food categories.

7.1 Pasta Sauces and Cooking Sauces

For pasta sauces, chili, and cooking sauces:

• 10 – 12 °Bx diced tomato paste is often suitable for standard recipes.
• 12 – 14 °Bx may be preferred for premium or reduced-cooking formulations.

Higher Brix provides a richer sauce with fewer additional thickening steps.

7.2 Pizza Sauces and Toppings

Pizza manufacturers usually look for:

• Medium to high Brix diced tomato paste (12 – 16 °Bx)
• Stable viscosity that resists water separation on the pizza base

The higher solids level helps prevent soggy crusts and ensures a robust tomato flavor after baking.

7.3 Ready Meals and Retort Products

For retorted ready meals, canned stews, and pouch meals:

• Medium Brix levels (12 – 14 °Bx) often balance cost and texture.
• High Brix options (14 – 16 °Bx) may be chosen when cooking times are short.

Since retort processing can slightly dilute perceived flavor, a higher Brix input may be beneficial.

7.4 Soups and Broths

For light tomato soups or broths:

• Low to standard Brix (8 – 12 °Bx) diced tomato paste is usually sufficient.

When additional stock, cream, or water is added, the initial Brix does not need to be as high.

7.5 Foodservice and Catering Applications

Foodservice operators prioritize flexibility and storage efficiency:

• Higher Brix diced tomato paste (14 – 16 °Bx) can be diluted on-site as needed.
• This allows multiple menu items to be prepared from one base product.

8. Advantages of Using Brix-Controlled Diced Tomato Paste

Using diced tomato paste with defined Brix levels brings several advantages for food manufacturers,

co-packers, and foodservice operators.

8.1 Consistent Quality and Standardization

With a fixed Brix specification:

• Batch-to-batch variation in tomato solids is minimized.
• Recipe formulations can be standardized at the factory level.
• Finished products exhibit more consistent taste and mouthfeel.

8.2 Reduced Preparation Time

Because diced tomato paste is already partially concentrated:

• Cooking times to reach target sauce thickness are reduced.
• Energy consumption for evaporation or reduction on-site is lower.
• Production throughput can increase with the same equipment.

8.3 Simplified Supply Chain

Instead of managing multiple items like fresh tomatoes, tomato paste, and separately diced

products, manufacturers can:

• Consolidate purchases into a single diced tomato paste SKU.
• Reduce storage space requirements.
• Improve inventory management and forecasting.

8.4 Better Cost Control

When the Brix level is known:

• Formulators can calculate the exact input cost per kilogram of tomato solids.
• Price comparisons between suppliers are more transparent.
• Waste due to over-concentration or under-concentration is minimized.

9. Example Specification Tables for Diced Tomato Paste at Different Brix Levels

While exact specifications vary by supplier and region, the following tables illustrate typical

parameter ranges for diced tomato paste products targeting different Brix levels.

9.1 Low to Standard Brix Diced Tomato Paste (8 – 12 °Bx)

9.2 Medium Brix Diced Tomato Paste (12 – 14 °Bx)

9.3 High Brix Diced Tomato Paste (14 – 16 °Bx and Above)

10. Other Quality Factors Beyond Brix

While Brix is a central characteristic of diced tomato paste, it is not the only parameter that

determines quality. Buyers and quality managers also evaluate:

10.1 Color and Appearance

Ideal diced tomato paste should have:

• A uniform deep red color
• Minimal browning or discoloration
• Visibly distinct, intact tomato pieces

10.2 Flavor and Aroma

Sensory evaluation focuses on:

• Fresh, ripe tomato notes
• Absence of burnt, cooked, or off-flavors
• Balanced sweetness and acidity

10.3 Texture and Piece Integrity

Diced pieces should:

• Retain shape under processing conditions
• Have a pleasant bite, not too mushy
• Distribute evenly throughout the product

10.4 Microbiological Safety

Industrial diced tomato paste is usually produced under:

• Aseptic processing conditions, or
• Retort sterilization in cans or pouches

This ensures commercial sterility when Brix and pH are appropriately controlled.

11. Storage, Handling, and Brix Stability

Proper storage and handling preserve the Brix level and overall quality of diced tomato paste

throughout its shelf life.

11.1 Storage Conditions

Recommended storage conditions typically include:

• Cool, dry environment away from direct sunlight
• Stable temperature to prevent separation or texture changes
• Protection from physical damage to packaging

11.2 Brix Stability Over Time

Brix itself does not normally change during storage, as it is a measure of solids concentration.

However, physical separation (such as serum separation) may cause localized differences in

concentration within the container. Gentle mixing before use can restore uniformity.

11.3 Thawing and Reconstitution

For frozen diced tomato paste products:

• Thawing should be controlled to avoid damaging tomato pieces.
• Once thawed, the product should be used promptly.

Reconstitution of high Brix diced tomato paste with water should be calculated based on the

target final Brix of the recipe.

12. Frequently Asked Questions About Brix Levels in Diced Tomato Paste

12.1 Does a higher Brix always mean a better diced tomato paste?

Not necessarily. Higher Brix means more concentrated tomato solids, but “better” depends on the

application. For light soups, very high Brix can be unnecessary and more expensive. For thick

sauces and pizza toppings, higher Brix may provide the desired consistency and flavor.

12.2 Can I dilute high Brix diced tomato paste to a lower Brix?

Yes. Diced tomato paste with a higher Brix level can be diluted with water or other liquids to

achieve the desired solids content. Care must be taken to maintain the correct balance between

liquid and tomato pieces and to adjust seasonings accordingly.

12.3 How does Brix relate to sweetness in tomato products?

Brix measures total soluble solids, not only sugars. However, higher Brix generally correlates with

higher natural sugar content, resulting in a sweeter taste. Acidity, salt, and processing can also

influence the perceived sweetness.

12.4 Is there a standard global Brix specification for diced tomato paste?

There is no single global standard; instead, each region and buyer may define their own Brix

specification based on local regulations and product requirements. Nonetheless, ranges like

8–10 °Bx, 10–12 °Bx, and 12–14 °Bx are broadly recognized categories in the industry.

12.5 How can I verify Brix levels when receiving a shipment?

To verify Brix upon receipt, quality personnel can:

1. Take a representative sample from multiple containers or sections.
2. Prepare the sample by homogenizing the product and separating the liquid phase.
3. Use a calibrated handheld or digital refractometer to measure Brix at 20 °C.

Recording and comparing results with the certificate of analysis helps ensure specification compliance.

13. Conclusion: Using Brix to Optimize Diced Tomato Paste Selection

The Brix level of diced tomato paste is a key technical parameter for anyone working with industrial

tomato ingredients. It directly influences flavor intensity, texture, yield, and cost. By understanding

the relationship between Brix and performance, manufacturers and buyers can:

• Select diced tomato paste with the most suitable Brix range for their applications.
• Standardize recipes and processes for consistent quality.
• Optimize costs by calculating input based on tomato solids rather than weight alone.

Whether the target product is a light soup, a rich pasta sauce, pizza topping, or a ready meal, Brix

provides a reliable metric to describe and control the concentration of diced tomato paste. Combined

with other quality factors such as color, pH, texture, and microbial safety, Brix levels form the core

of a robust specification for diced tomato paste used in modern food manufacturing.