. 2012 Sep 19;51(11):2964–2976. doi: 10.1007/s13197-012-0824-7

Table 3.

Pearson correlation matrix of alcohols, esters, inorganic ions, organic acid, polyphenols content, alcohol degree, real gravity and original gravity to proton chemical shift (CS)

Predictors^a	AD	RG	OG	EA	Propanol	Iso-butanol	Isoamyl acetate	Isoamyl alcohol	CS
AD	1	0.706^b	0.969^b	0.567^b	0.672^b	0.581^b	0.532^b	0.652^b	0.629^b
RG		1	0.841^b	0.474^b	0.470^b	0.367^b	0.541^b	0.522^b	0.316
OG			1	0.590^b	0.650^b	0.532^b	0.563^b	0.639^b	0.562^b
EA				1	0.229	0.340^a	0.941^b	0.411^a	0.202
Propanol					1	0.636^b	0.246	0.726^b	0.342^a
Isobutanol						1	0.407^a	0.923^b	0.462^b
Isoamyl acetate							1	0.473^b	0.213
Isoamyl alcohol								1	0.386^c
CS									1
Predictors^a	K⁺	Na⁺	Mg²⁺	Ca²⁺	Cl^-	SO²⁻₄	CS
K⁺	1	−0.066	0.293	−0.443^b	0.246	−0.268	0.423^c
Na⁺		1	0.262	−0.021	−0.453 ^b	0.099	−0.177
Mg²⁺			1	0.042	0.067	0.049	0.272
Ca²⁺				1	0.004	0.070	0.000
Cl⁻					1	−0.159	0.551^b
SO²⁻₄						1	−0.187
CS							1
Predictors^a	OA	TA	PA	MA	KA	LA	AA	CA	SA	CS
OA	1	0.429^c	−0.130	0.364^c	0.257	0.011	−0.004	0.440^b	−0.038	0.115
TA		1	−0.136	0.630^c	0.489^c	0.384^c	0.269	0.381^c	0.228	0.172
PA			1	−0.301	0.374^c	0.532^c	0.126	−0.163	0.070	0.595^b
MA				1	0.245	0.056	0.325	0.295	0.399^c	−0.004
KA					1	0.367^c	0.130	−0.047	0.047	0.343^c
LA						1	0.366^c	0.104	0.452^c	0.515^b
AA							1	0.127	0.148	0.132
CA								1	0.020	0.337^c
SA									1	0.012
CS										1
Predictors^a	GA	Catech-in	VA	Caffeic acid	Syringic acid	P-CA	FA	CS
GA	1	0.605^b	0.794^b	0.550^b	−0.273	0.691^b	0.338^c	0.628^b
Catechin		1	694^b	0.199	−0.301	0.397^c	0.115	0.548^b
VA			1	0.633^b	−0.163	0.654^b	0.308	0.533^b
Caffeic acid				1	0.210	0.603^b	0.380^c	0.201
Syringic acid					1	0.288	0.598^b	0.004
P-CA						1	0.706^b	0.464^b
FA							1	0.471^b
CS								1

^aThe predictors were presented as followeds: Alcohol Degree (AD), Real Gravity (RG), Original Gravity (OG), Ethyl Acetate (EA), Oxalic Acid (OA), Tartaric Acid (TA), Pyruvic Acid (PA), Malic Acid (MA), Ketoglutaric Acid (KA), Lactic Acid (LA), Acetic Acid (AA), Citric Acid (CA), Succinic Acid (SA), Gallic acid (GA), Vanillic acid (VA), P-coumarilic acid (P-CA), Ferulic acid (FA), Chemical Shift (CS)

^bThe correlation coefficient is significant with an confidence level of 99 %

^cThe correlation coefficient is significant with an confidence level of 95 %