README file
Data Set Title: “Calibration curve DPPH - Trolox-equivalent values”
Data Set Authors: Arianna Ricci; Eleonora Iaccheri; Giuseppina Paola Parpinello; Luigi Ragni; Andrea Versari 

Data Set Contact Person/s: Arianna Ricci arianna.ricci4@unibo.it 
Data Set License: this data set is distributed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license, https://creativecommons.org/licenses/by/4.0/”]

Publication Year: 2025
Data set Contents
The data set consists of:

 •	1 tabular quantitative file saved in .csv format 
“Calibration-curve-DPPH_Trolox-equivalent-values.csv”
 •	1 README file 
“Calibration-curve-DPPH_Trolox-equivalent-values.rtf”
Data set Documentation
Abstract
The 2,2-diphenyl-1-picrylhydrazyl (DPPH) can be effectively used to measure the antiradical capacity of a selection of botanical extracts, and results are consistent with measurements performed by an innovative optical method. The DPPH values can be expressed as % scavenging; alternatively, the present document reports the DPPH calibration using Trolox equivalent values.

Content of the files: 
 •	file [Calibration-curve-DPPH_Trolox-equivalent-values.csv] contains the absorbance values (a.u., 517 nm) of the DPPH reaction mixture after 1h storage. 
 •	file [Calibration-curve-DPPH_Trolox-equivalent-values.rtf] contains a short summary of the experiment. 

File specifics
To create the .csv UTF-8 files, “Microsoft Excel” version: 2509 (build 19231.20156) was used, with the following specifics:

•Character set UTF-8
•Field delimiter « ; » (semicolon)
•Text delimiter « " » (quotes)

Methodologies 
Pure methanol analytical grade was used to dissolve the DPPH radical, then the Trolox was dissolved in water and model wine solution, respectively, at the different concentration levels (range 0-206 mg/L). 
The reagent (2.9 mL) was mixed with the standard solutions (100 µL) and after 1h incubation the absorbance at 517 nm was recorded using the Agilent Cary UV Workstation Scan Version 5.1.0.1016
Collection Time: 10/11/2024 10:12:08 AM
Operator Name: Arianna Ricci

Parameter List :
 •	Instrument  Cary 60
 •	Instrument Version  2.00
 •	X Mode  Nanometers
 •	Y Mode  Abs
 •	Beam Mode  Dual Beam
 •	Baseline Correction  Off
 •	Cycle Mode  Off

Notes

This dataset is a supplement to Ricci, A., Iaccheri, E., Parpinello, G. P., Ragni, L., Bosaro, M., & Versari, A. (2025). A new optical technique for the quantitative and functional analysis of botanical extracts for oenological use. Food Research International, 214, 116562. https://doi.org/10.1016/j.foodres.2025.116562