Application of the linear method of discriminant analysis of reflectance spectra in the near infrared region for the species identification of fish of the Salmonidae family

It is well known that fish belonging to the Salmonidae family differ in their nutritional value. Anatomical and morphological features of different salmon species have a certain similarity; therefore, representatives of this family are most often falsified. Assortment falsification of products from...

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Bibliographic Details
Main Authors: Novikov, V. Yu., Rysakova, K. S., Baryshnikov, A. V.
Format: Other Non-Article Part of Journal/Newspaper
Language:Russian
Published: 2021
Subjects:
Online Access:http://hdl.handle.net/1834/41799
Description
Summary:It is well known that fish belonging to the Salmonidae family differ in their nutritional value. Anatomical and morphological features of different salmon species have a certain similarity; therefore, representatives of this family are most often falsified. Assortment falsification of products from fish of this family is usually carried out by replacing more valuable species with cheaper ones with a reduced nutritional value. Most often, counterfeiting of Atlantic salmon (salmon) by Far Eastern ones (chum salmon, pink salmon, chinook salmon, coho salmon) is found. Near infrared spectroscopy (NIR) is now increasingly used for identification and authentication of closely related organisms, in some cases being a rapid method replacing genetic analysis. We have obtained diffusion reflectance spectra of NIR radiation for three species of fish from the Northern Basin belonging to the salmon family. The best classification by fish species has been obtained by analyzing the NIR spectra of pre-dried fat-free muscle tissue samples. In case of wet samples, the observed differences are less significant, up to insignificant differences in individual values from neighboring clusters. The possibility of using the method of linear discriminant analysis of the NIR reflection spectra of muscle proteins for the species identification of fish has been shown. Общеизвестно, что рыбы, принадлежащие к семейству Лососёвые, неодинаковы по своей пищевой ценности. Анатомо-морфологические признаки разных видов лососёвых имеют определенное сходство, поэтому представители этого семейства наиболее часто фальсифицируются. Ассортиментная фальсификация продуктов из рыб этого семейства обычно осуществляется путем подмены более ценных видов дешевыми с пониженной пищевой ценностью. Чаще всего встречается подделка атлантических лососей (семга) дальневосточными (кета, горбуша, чавыча, кижуч). Спектроскопия в ближней инфракрасной области (БИК) в настоящее время находит все большее применение для идентификации и аутентификации близких организмов, в ...