Effect of pre-harvest salicylic acid treatments on the quality and shelf life of the ‘Cresthaven’ peach cultivar

Figure 1

Effect of pre-harvest SA treatments on the fruit skin L*, a* and b* values of peach fruits at harvest and after storage plus 2-day shelf life

Applications	L* value		a* value		b* value
	Harvest	Shelf life	Harvest	Shelf life	Harvest	Shelf life
Control	63.76 ns	64.20 ns	20.32 ns	27.88 ns	44.10 ns	46.03 ns
1 mM SA	57.24	58.65	18.41	25.01	39.49	41.84
2 mM SA	57.96	59.02	17.23	24.45	36.76	39.90

Effect of different concentrations of SA treatments before harvest and storage of the total phenolic content and antioxidant activity in the ‘Cresthaven’ peach varieties

Applications	Total phenol content (mg GAE · 100 g−1 FW)		Antioxidant activity (μmol TE · g−1 FW)
	Harvest	Shelf life	Harvest	Shelf life
Control	65.25 bz,*	71.61 b*	8.98 b*	9.65 b**
1 mM SA	80.17 a	84.34 a	11.96 a	12.37 a
2 mM SA	75.91 ab	89.06 a	11.37 a	14.30 a

Effect of SA treatments on fruit weight (g), fruit width (mm) and fruit length (mm) values

Applications	Fruit weight (g)	Fruit width (mm)	Fruit length (mm)
Control	259.58 b**	78.29 b*	79.06 b*
1 mM	311.83 a	82.26 a	82.86 ab
2 mM	300.00 a	82.62 a	83.55 a

Effect of SA treatments on TSS, TA content and pH value at harvest and after storage plus 2-day shelf life

Application	TSS (%)		TA (g malic acid · 100 mL−1)		pH
	Harvest	Shelf life	Harvest	Shelf life	Harvest	Shelf life
Control	11.80 ns	12.46 ns	0.65 bz*	0.55 b*	4.26 ns	4.49 ns
1 mM SA	12.00	12.56	0.78 a	0.61 ab	4.25	4.42
2 mM SA	12.00	12.86	0.80 a	0.69 a	4.25	4.29

Effect of pre-harvest SA treatments on the fruit L*, a* and b* values of peach fruits at harvest and after storage plus 2-day shelf life 20°C

Applications	L* value		a* value		b* value
	Harvest	Shelf life	Harvest	Shelf life	Harvest	Shelf life
Control	74.43ns	64.58 cz,*	1.42 ns	7.54 a*	64.94 a*	61.57 ns
1 mM SA	71.88	69.23 b	−0.28	4.93 b	63.26 ab	61.36
2 mM SA	74.62	72.26 a	−0.46	3.81 b	61.95 b	58.63