DOI - Mendel University Press

DOI identifiers

DOI: 10.11118/978-80-7701-100-6-0211

RYCHLÁ KONTROLA KVALITY DRUHŮ JEDLÉHO HMYZU: MULTI-SPECIES FT-NIR KALIBRACE V ROZSAHU 13200–8700 CM⁻¹ PRO PREDIKCI OBSAHU NUTRIENTŮ

RAPID QUALITY CONTROL OF EDIBLE INSECTS: MULTI-SPECIES FT-NIR CALIBRATION IN THE 13200–8700 CM⁻¹ REGION FOR NUTRIENT PREDICTION

Matyáš Krtička1
1 Katedra mikrobiologie, výživy a dietetiky, Fakulta agrobiologie, potravinových a přírodních zdrojů, Česká zemědělská univerzita v Praze, Kamýcká 129, 165 00 Praha – Suchdol, Česká republika


The aim of this study was to develop and validate a multi-species FT-NIR calibration model for the simultaneous prediction of dry matter, crude protein, fat, and ash content in selected edible insect species (Acheta domesticus, Tenebrio molitor, and Alphitobius diaperinus) using a limited spectral range of 13200–8700 cm⁻¹, characteristic of portable NIR spectrometers. Insect samples were freeze-dried, homogenized, and analyzed by Fourier transform near-infrared spectroscopy in transmission mode. Reference values of individual nutrients were determined using standard laboratory methods. Calibration models were developed using partial least squares (PLS) regression with appropriate spectral preprocessing, and their performance was evaluated by cross-validation. The best results were obtained for dry matter calibration (R²CV = 0.93, RPD = 3.2), demonstrating excellent predictive performance. The protein calibration achieved good accuracy (R²CV = 0.89, RPD = 2.8), while the models for fat (R²CV = 0.86, RPD = 2.2) and ash (R²CV = 0.75, RPD = 2.11) showed lower predictive ability. The results confirm that multi-species FT-NIR calibration within a limited spectral range represents a promising tool for rapid and non-destructive assessment of the nutritional composition of edible insects.

Keywords: FT-NIR, edible insect, calibration model, preprocessing

pages: 211-216, online: 2026



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