Table 1.

Effect of pre-harvest ozone treatment on the health-promoting qualitative features.

Product	Effect	Application Form	Ozone Dose	Process Duration	Source
Bobal Grapevines	+Terpenoids +Total anthocyanins	Water	NA	Single application 6 weeks before harvest	[66]
Broccoli plants	−Glucoraphanin +Glucobrassicin +Glucosinolates +Phenolics	Water (foliar application-spraying or root application)	0.2 mg/L	Foliar spraying on 2 consecutive days 2 times per week until harvesting (90 days) or 32 root treatments	[67]
Capsicum seedlings	±Total phenolics ±Vitamin C	Water (under greenhouse conditions)	0.4 ppm, 750 mV	NA	[68]
Passion fruit liana seeds	+Ascorbic acid +Carotenoids +Flavonoids	Gaseous	22, 41, and 58 ppb/h AOT40 and 13.52, 17.24, and 20.62 mmol/m2 POD0	over 97 days	[69]
Red pepper fruit from Capsicum baccatum	−Capsaicin +Total carotenoids +Total phenolics +Hydroxyl radical-scavenging activity	Gaseous	171.6 µg/m3	62 days	[70]
Strawberries (Fragaria x ananassa Duch.)	−Ascorbic acid ±Antioxidative capacity ±Anthocyanins ±Phenolics	Gaseous	156 μg/m³	8 h/day for 5 days a week for 2 months	[71]
Watermelon seedlings	+Total phenolic +Antioxidant activity ±Vitamin C	Water (under greenhouse conditions)	0.4 ppm, 750 mV	NA	[42]

NA—Not available, AOT₄₀—Accumulated Ozone over Threshold of 40 ppb, POD₀—Phytotoxic Ozone Dose.