Archive
lab-testing
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How is aflatoxin testing done?
By a prescribed sampling scheme first, then screening by ELISA and confirmation by HPLC with fluorescence detection or LC-MS/MS. The sample plan…
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What is peroxide value in seed oils?
A measure of primary oxidation products, determined by ISO 3960 and expressed in milliequivalents of active oxygen per kilogram. It rises early…
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Cold-Pressed Seed Oils: What the Term Means and Which Numbers Prove It
Cold pressing preserves flavour and minor components and gives up yield and shelf life in exchange. This guide sets out what the…
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Aflatoxin Management in Tree Nuts: Sorting, Sampling and What the Certificate Proves
Aflatoxin contamination in tree nuts is concentrated in a handful of kernels per tonne, which makes the sample plan more important than…
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What is the aflatoxin risk in spices?
Aflatoxins form when storage moulds grow on inadequately dried or badly stored material. Maximum levels are set in EU law and no…
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What are the moisture limits for dried mushrooms?
There is no EU commodity limit. Trade practice is around 10 to 13 per cent depending on species, with water activity around…
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What is essential oil content in dried herbs?
The volatile aromatic fraction, measured by hydrodistillation and reported in millilitres per 100 g on a dry basis. It is what the…
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What is the difference between acid value and peroxide value in sunflower oil?
They measure two entirely different kinds of damage, and a buyer who treats them as interchangeable freshness indicators will eventually accept a…
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How do you verify honey authenticity?
You verify it with a coherent file of several tests, not with one certificate, because no single method covers every kind of…