Statistically significant phenolic compounds responsible for the differentiation of Retsina samples according to the three parameters under investigation
Factor
Stageexamined
Compound
AUC of ROC※
P-value(t-test)
Log2 fold change†
Altitude
Intermediate point (stage “a”)
Isorhamnetin
0.89
5.71E-03
–0.71
Quercetin
0.88
8.42E-03
–0.68
Gallocatechin
0.77
3.82E-02
–0.34
Tapping method
Maturation and aging
Epicatechin
0.73
1.76E-02
–0.25
Gallocatechin
0.71
3.54E-02
–0.18
Caftaric acid
0.70
5.46E-02
–0.09
Contact time
End of fermentation (stage “b”)
Glutathione
1.00
8.02E-05
–1.08
Isorhamnetin
0.89
4.93E-03
–0.31
Ethyl caffeate
0.91
7.80E-03
–0.54
Quercetin
0.91
1.32E-02
–0.32
Kaempferol
0.84
3.03E-02
–0.26
※: area under the curve (AUC) of receiver operating characteristic (ROC); †: a negative Log2 fold change indicates a direction towards group of microclimate A for altitude, short extraction time and conventional harvesting
This research has been co‐financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH – CREATE – INNOVATE [T2EDK-03382]. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Commission regulation (EC) No 1308/2013 of 17 December 2013 establishing a common organisation of the markets in agricultural products and repealing Council Regulations (EEC) No 922/72, (EEC) No 234/79, (EC) No 1037/2001 and (EC) No 1234/2007 [Internet].[Cited 2024 Aug 26]. Available from: https://eur-lex.europa.eu/eli/reg/2013/1308/2024-05-13
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