Classification of commercial apple juices based on multivariate analysis of their chemical profiles

Katarzyna Włodarska , Katarzyna Pawlak-Lemańska , Tomasz Górecki , Ewa Sikorska

Abstract

Currently, a wide range of differently processed apple juices is available on the market. In this study the quality of commercial apple juices from four product categories was evaluated on the basis of their chemical profiles (total soluble solids, pH, titratable acidity, ratio of soluble solids to acidity, sugars, total phenolics content, and antioxidant activity) using multivariate methods. Principal component analysis has revealed, that the chemical parameters, such as titratable acidity, ratio of soluble solids to acidity, and pH (PC1) and sugars and total soluble solids (PC2) appears to be the parameters most differentiating the samples. Five classes of juices with similar chemical composition were detected using hierarchical cluster analysis. The exploratory analysis of the overall chemical profiles revealed that the juices clear from concentrate, cloudy not from concentrate and freshly squeezed, were easily distinguishable due to their unique properties. In contrast, cloudy juices from concentrate showed properties similar to juices of other classes. The classification based on k-nearest neighbors method had high sensitivity and low classification error for clear juices from concentrate and cloudy not from concentrate. The classification failed for the cloudy juices from concentrate.
Author Katarzyna Włodarska (WT / KTiAI)
Katarzyna Włodarska,,
- Department of Technology and Instrumental Analysis
, Katarzyna Pawlak-Lemańska (WT / KTiAI)
Katarzyna Pawlak-Lemańska,,
- Department of Technology and Instrumental Analysis
, Tomasz Górecki - Adam Mickiewicz University (UAM)
Tomasz Górecki,,
-
, Ewa Sikorska (WT / KTiAI)
Ewa Sikorska,,
- Department of Technology and Instrumental Analysis
Journal seriesInternational Journal of Food Properties, ISSN 1094-2912, (A 25 pkt)
Issue year2017
Vol20
No8
Pages1773-1785
Publication size in sheets0.6
Keywords in EnglishClassification of commercial apple juices based on multivariate analysis of their chemical profiles
ASJC Classification1106 Food Science
DOIDOI:10.1080/10942912.2016.1219367
URL https://www.tandfonline.com/doi/abs/10.1080/10942912.2016.1219367
Languageen angielski
Score (nominal)25
Score sourcejournalList
ScoreMinisterial score = 25.0, 19-03-2020, ArticleFromJournal
Publication indicators WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.033; WoS Impact Factor: 2017 = 1.845 (2) - 2017=1.61 (5)
Citation count*13 (2020-10-17)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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