01 — Authenticity
How Are Truffle Species Identified?
How appearance, microscopy and DNA analysis identify a species, how substitution with Chinese truffle is detected, and why origin is a separate question.
02Explanation
Start with two separate questions: which species is it, and where did the specimen come from? A photograph or visible features can help compare a whole truffle, but processed products and mixtures need a different approach. A laboratory result should state the sample, method and reference material used.
Related species can look similar. The comparison pages show their differences, while the table below explains what each method can establish. DNA tests depend on the sample and assay; spectroscopic and isotope models depend on their reference data. A laboratory method is not automatically infallible proof.
May Chinese truffle be sold in Italy?
Not as fresh truffle, according to the text checked on 25 October 2026. Article 2 of Italian Law 752/1985 (text in force since 9 June 1991) allows fresh truffles to be sold only from nine listed species and prohibits trade in any other kind; Tuber indicum is not listed. A reform was before the Italian parliament, so check the current text. This applies to Italy, not Croatia.
Legge 16 dicembre 1985, n. 752, art. 2 (testo in vigore dal 9 giugno 1991)
| Method | Best suited to | Limitation |
|---|---|---|
| morphology / microscopy | whole fresh material | overlap and expertise |
| PCR / DNA | species in a suitable sample | marker, database, mixture, degradation |
| FT-NIR / chemometrics | classification against a model | calibration and reference samples |
| isotopes / elements | support for origin classification | model is not absolute proof |
03What we know
04Not the same as
species identity geographic origin
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