Bulk and Compound-Specific Stable Isotope Analysis for the Authentication of Walnuts (Juglans regia) Origins.

ABSTRACT: Walnuts are grown in various countries, and as product origin information is becoming more important to consumers, new techniques to differentiate walnut geographical authenticity are needed. We conducted bulk stable isotope analysis (BSIA) and compound-specific stable isotope analysis (CSIA) on walnuts grown in seven countries. The BSIA consisted of δ¹³C_bulk, δ¹⁵N_bulk, and δ³⁴S_bulk, and CSIA covered δ²H_fatty acid, δ¹³C_fatty acid, δ¹³C_amino acid, δ¹⁵N_amino acid, and δ²H_amino acid. Analysis of variance (ANOVA) and linear discriminant analysis (LDA) were used for statistical analysis to compare samples from the USA and

SUBMITTER: Athaillah ZA 

PROVIDER: S-EPMC10655176 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature