Voltammetric Behavior and Determination of Nordihydroguaiaretic Acid in Presence of Other Antioxidants Using PLS Calibration

Abstract

The voltammetric behavior of nordihydroguaiaretic acid (NDGA) has been studied (glassy carbon electrode, 20% acetonitrile-water medium) with different techniques. A DPV procedure is proposed to determine NDGA alone, at pH 4.0 with Britton-Robinson buffer. The sampled DC mode, together with the PLS type 1 multivariate approach, allows us to analyze NDGA in presence of TBHQ and PG. The proposed methods were applied for the determination of NDGA in different samples of olive oil, sunflower oil and packet soup, with, in general, satisfactory recovery results.

Electrochemical Sensor-Based Devices for Assessing Bioactive Compounds in Olive Oils: A Brief Review

“…91,92,94,95,98,124,132,133], K-Nearest Neighbor (KNN)[134] and Linear Discriminant Analysis (LDA)[97,99,132] are widely applied. For quantitative assessment[131], Multiple Linear Regression (MLR)[100], Principal Component Regression (PCR)[77] and Partial Least-Squares (PLS)[91][92][93]95,100,122,132,133,135] models are often used. Regarding qualitative and/or quantitative non-linear strategies, Artificial Neural Networks (ANNs) are the most common approaches…”