In situ prediction of phenolic compounds in puff dried Ziziphus jujuba Mill. using hand-held spectral analytical system

Food Chem. 2020 Nov 30:331:127361. doi: 10.1016/j.foodchem.2020.127361. Epub 2020 Jun 20.

Abstract

A low cost hand-held spectral analytical system was developed for in situ screening of phenolics and flavonoids in puff dried Ziziphus jujuba (Z. Jujuba) samples. Standards of gallic acid, caffeic acid, l-epicatechin, phloridzin and cianidanol were used to quantify the individual phenolics and flavonoids using high performance liquid chromatography-diode array detector (HPLC-DAD). The synergy interval partial least square with ant colony optimization (Si-ACO-PLS) was attempted to optimize and capture informative variables for the prediction of target compounds. The model performance was evaluated using correlation coefficients of prediction (Rp); root mean square error of prediction (RMSEP) and residual predictive deviation (RPD). The Si-ACO-PLS yielded optimal performance, 0.8540 ≤ Rc ≤ 0.9250, 0.8360 ≤ Rp ≤ 0.9056, 0.84 ≤ RMSEP ≤ 16.30 and 2.03 ≤ RPD ≤ 2.26. The hand-held spectral analytical system coupled with Si-ACO-PLS proved to the reliable, rapid and cost-effective method to quantify the phenolics and flavonoids in Z. Jujuba.

Keywords: Flavonoids; HPLC-DAD; Hand-held spectral system; Multivariate calibration; Phenolics; Puff drying system; Ziziphus Jujuba Mill.

MeSH terms

  • Algorithms
  • Chromatography, High Pressure Liquid
  • Desiccation / methods
  • Flavonoids / analysis*
  • Food Analysis / instrumentation*
  • Food Analysis / methods*
  • Food Analysis / statistics & numerical data
  • Least-Squares Analysis
  • Phenols / analysis*
  • Spectrum Analysis / instrumentation
  • Spectrum Analysis / methods
  • Ziziphus / chemistry*

Substances

  • Flavonoids
  • Phenols