Effect of certain treatments to prevent or partially reverse the pinking phenomenon in susceptible white wines

Open Access

Table 5.

Optical densities of wines and ANOVA – Tukey Test HSD, p < 0.05.

Wine samples (buffered (pH=3.6)	*Spectrophotometric analyses of colour (10 mm cuvette)
	Abs. 420	Abs. 520	Abs. 620
	nm, AU	nm, AU	nm, AU
	Sauvignon blanc
SB_tank	0.6722^a	0.1508^a	0.0310^a
SB_bottle	0.7977^b	0.4138^d	0.0863^b
SB_UVlight	0.8438^c	0.3113^b	0.0837^b
SB_dark	0.8400^c	0.3405^c	0.0872^b
	Chardonnay
CH_tank	0.8162^a	0.2147^a	0.0647^a
CH_bottle	0.8167^a	0.3355^d	0.1088^c
CH_UVlight	0.8700^b	0.3100^c	0.0905^b
CH_dark	0.8665^b	0.2665^b	0.0892^b

^∗

results expressed as absorbance units.

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