Classification of organic and ordinary kiwifruit by chemometrics analysis of elemental fingerprint and stable isotopic ratios

Abstract

Elemental fingerprint, stable isotopic analysis, and chemometrics were combined to identify organic kiwifruit from ordinarily cultivated kiwifruit.Samples of organic (n1 = 78) and ordinary kiwifruit (n2 = 85) were collected from neighboring areas. For elemental fingerprint, the contents of 15 elements in fresh fruits, including Al,

Accurate Traceability of Stable C, H, O, N Isotope Ratios and Multi-Element Analysis Combined with Chemometrics for Chrysanthemi Flos ‘Hangbaiju’ from Different Origins

“…In recent years, stable isotope ratio and multi-element analyses have been widely used in food and drug origin traceability, authenticity discrimination, variety identification, etc. [9][10][11]. Zhao et al used four stable isotope ratios of δ 13 C, δ 15 N, δ 2 H, and δ 18 O, and seven element concentrations, to identify organic pork and conventionally-grown pork from four origins, and the results showed that the method could distinguish between organic pork and conventionally-grown pork from different origins [12]; McLeod et al successfully used stable isotope ratios and trace elements to discriminate the authenticity of goat milk powder [13].…”

“…Fu et al used δ 15 N, δ 2 H, δ 13 C, and δ 18 O, 87 Sr/ 86 Sr values and multiple elements to successfully trace the origins and discriminate the authenticity of Huangjing herbs [16]. These studies show that stable isotope ratios combined with multi-element analysis technology is a powerful method for origin traceability, authenticity discrimination, and variety identification in food and medicinal products [9,17].…”