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Fruit and vegetable

Fruit and vegetable industry

Texture is a critical quality attribute to all fruits and vegetables, whether it is to assess ripeness of the raw item or functional performance in their processed forms. Evaluating the texture of fruits and vegetables, whether fresh or after post-harvest treatments and processing, shows there is a clear link between the anticipated texture of these food products and their quality:

  • Ripe, juicy tomatoes
  • Crunchy apples
  • Succulent oranges

These are all now commonly associated as the norm for the acceptable state, feel and taste of these foods.

If a strawberry is too soft, it is no longer desirable, therefore sensory characteristics must be continually evaluated to monitor quality standards in order to, for example, establish the optimum time to pick the best crop and produce a consistently good finished product.

The inclusion of fruits and vegetables in processed products; categorised as vegan, vegetarian or plant-based, requires that the processor must provide a quality texture from a formulation with specific and restricted ingredients. Often these foodstuffs are substitutes, and as such must be tested to closely replicate a desired mouth-feel akin to another type of food source.


Test methods for the fruit and vegetable sector

Fruits and vegetables differ significantly in texture between one another, therefore a range of texture test techniques are available in which to accurately assess their characteristics. Common consumer sensory texture descriptions, especially fresh produce, are:

  • Crispness
  • Hardness
  • Juiciness
  • Toughness
  • Mealiness
  • Fibrousness

These characteristics can be measured and compared throughout production and processing to assess the changes in texture. Different varieties of the same type of fruit or vegetable, for example, pears, can be easily examined to determine differences in texture. Pea texture for harvest is a specialised field, which requires a tenderometer.

Bulk analysisFruit and Vegetable Bulk Analysis

  • Chopped tomato integrity test
  • Bulk evaluation of cooked potato, canned mushrooms
  • Measuring soft fruits, such as strawberries to predict final product integrity
  • Batch optimization and oven design of roasted vegetables
  • Pea maturity using a tenderometer
  • Firmness of meat-subsitute burger


CompressionFruit and Veg Compression

Deformation tests using compression platens (ideally larger than the deformed sample) are useful for assessing the integrity of cooked potatoes. Squashing solid and self-supporting samples enables a number of textural properties to be evaluated, including hardness, springiness and fracturability.

  • Succulence of sweetcorn, oranges, apples etc., using the succulometer
  • Hardness of seeds
  • Softening of cooked potato to assess suitability for mashing and puree production
  • Avocado firmness for freshness grading


Extrusion (back extrusion)Fruit and Veg Extrusion

Use back extrusion to measure flow and spoonability of thick purees and fruit pulps.

  • Assess pumpability of vegetable purees
  • Optimize the texture of fruit toppings: flow, firmness and consistency


Penetration and punctureFruit and Veg Penetration

Small cylinders, balls, needles and cones are used to penetrate into a sample’s surface imitating biting in the mouth. This evaluates the ripeness and cook quality of fruits and vegetables by determining their firmness.

  • Apple ripeness by Magness-Taylor penetrometry method
  • Skin toughness of berries
  • Hardness of cooked carrots
  • Onion bulb puncture test, by spherical probe


Multiple point penetrationFruit and Veg Multiple point penetration

Multiple point analysis of jam allows for different particulates when measuring set firmness. Used to test multiple points on one sample where texture and form may vary considerably from one area to the next to measure properties such as firmness, gel strength and maturity. Application examples include:

  • Measure set properties of fruit jams
  • Skin toughness of cooked pulses
  • Firmness of haricot beans post cooking


ShearFruit and Veg Shear

  • Shearing through apple slices to assess crispness as a measure of freshness
  • Cut through broccoli to predict final cook quality
  • Measure bite characteristics of bananas
  • Cross-sectional changes in bite force along length of asparagus stem
  • Firmness of potato tuber
  • Assess changes to texture of broccoli and cauliflower florets during low temperature blanchings
  • Bite feel of meat-substite sausage


Snap, bend and breakFruit and Veg Snap

Measuring flexure properties using a three point bend determines freshness and crispness of vegetables, such as asparagus.

  • Measure flexure properties of asparagus to assess freshness throughout storage
  • Test fracture of celery as a measure of freshness and suitable crop harvesting

Trusted by customers across the world

I have been working with FTC for the past 3 years, we bought in that lapse of time 2 texture analyzers with different probes fixtures for all kind of applications at our Monterrey Plant. We have always been able to count on the technical support of FTC who kindly answers our requests in a prompt manner and with the best disposition.

As we continue developing our process to achieve better results at our company, we will for sure rely on FTC for technical support and equipment upgrades that will deliver us the best possible results.

Claudia Rojas, Hershey Monterrey Plant - Mexico
Asst. Staff Scientist

The University of Arizona’s Nutritional Sciences Food Lab acquired a Texture Analyzer from Food Technologies about 5 years ago. The company has a great product, which is tailored to food needs. 

We have used the Texture Analyzer for both research projects and as a tool to demonstrate to students how food manufacturers can employ objective testing in product evaluation to show how differing ingredients in the same product can affect quality attributes. Its use adds another dimension to the foods labs.

Drew Lambert has been instrumental in helping with set up for testing and providing support whenever there’s a question. He has been a pleasure to work with and is always accommodating with our needs and schedules.  He has even sent us special attachments for special projects.  We couldn’t ask for a better technical support.  Thanks for a great product and great service.

Patricia Sparks, Ph.D.
Assistant Professor of Practice

Excellent customer service. Consistently followed up and offered help without asking. Relatively low priced - provides good value. 

Easy to switch different load cells. Used it for 5 lab sessions for 68 students this semester and performed well.



Professor Jeyam Subbiah, University of Nebraska