How to Compare Raspberry Pomace Analysis

Start with what the pomace contains

A raspberry pomace analysis is useful only when you know what material was sampled. Pomace generally refers to the solid residue left after fruit processing, but the exact mix can differ with the process and the point where residue is collected. It may include varying amounts of skins, seeds, pulp and other fruit solids. Those differences affect how a laboratory result describes the product you are buying.

Ask for the product description alongside the analysis. Establish whether the material is raspberry residue alone or includes other fruit, and whether anything was added after processing. A carrier or other added ingredient changes the composition of the finished product, so its analysis should not be compared as if it were unblended raspberry pomace. Processing details matter too: drying, separation and size reduction can change moisture and physical form, even when the original fruit is the same.

Put moisture and dry-matter basis in context

The reporting basis determines how to interpret the numbers. An as-fed result describes the product as sampled, including its moisture. A dry-matter result expresses the measured component relative to the material remaining after water is excluded. Because water contributes to product weight but not dry matter, the same material can show different component percentages on these two bases.

To convert a result reported as-fed to a dry-matter basis, divide the as-fed concentration by the dry-matter fraction. For example, dry matter as a percentage is 100 minus moisture percentage; use that dry-matter percentage divided by 100 as the fraction. This calculation is meaningful only when the moisture and component results refer to the same sample and compatible reporting units. If the basis is not stated, or the results appear to use different bases, ask for clarification before comparing lots.

Dry-matter comparisons help separate differences in composition from differences caused by water content. But they do not make unlike materials equivalent: a dried, blended residue and a differently processed, unblended pomace still need their identities and processing histories understood.

Read each measure for the question it answers

Moisture describes the water in the sample and helps explain why as-fed values may differ. Protein and fat report specific compositional measures, but neither alone identifies the residue or establishes how it will perform in a particular formulation. Compare each value on the same basis and check that the analysis describes the form under consideration.

Fiber results need particular care. “Fiber” can refer to different measurements, and crude fiber is not interchangeable with other fiber fractions. Compare only results with the same named method or fraction; otherwise a numerical difference may reflect how the fiber was measured rather than a product difference. Ash represents the inorganic residue left by the analytical method. It can help distinguish samples, but a result should be interpreted alongside the material description and other measures rather than treated as a standalone quality verdict.

Particle size is a physical characteristic, not a nutrient value. It affects how the pomace flows, disperses or mixes in a process, and a single average or sieve result may not tell the whole story. Ask how particle size was measured and whether the reported result represents the same form you expect to receive.

Make comparisons on an equivalent basis

Before ranking analyses, align the product identity, processing description, added ingredients, sample form, analytical methods and reporting basis. Then compare the measures that matter to your intended use. A result for dried material should not be treated as directly equivalent to a result for a wetter residue without accounting for moisture, and changing from as-fed to dry matter does not resolve differences in ingredients or processing.

Check the sample date or lot reference as well as the units and basis shown on the report. An analysis is evidence about the sample tested, not a universal specification for every raspberry pomace lot. If the supplier’s offer is described differently from the sample, ask how the analysis relates to the offered product before using it to set a receiving or formulation decision.

Define the analysis before requesting a quote

For a useful comparison, specify the residue you are seeking and which measures you need reported, including the analytical basis. Include any relevant requirement for added carriers, processing description or particle size. Also state the quantity and unit, destination, preferred packaging or receiving method, and timing so the offered product can be assessed against your practical needs.

Once those requirements are clear, visit the [raspberries page](/ingredients/raspberries) to make a sourcing request. Exact analyses and commercial terms depend on the particular offer and should be matched to the product being quoted.

Common questions.