4
Which of the following is NOT a postharvest quarantine treatment?
EXPLANATION
Quarantine Treatments, Heat Treatments , Fumi
- Postharvest Quarantine Phytosanitary Treatments:
- Mandated by international biosecurity authorities to disinfest export consignments of invasive fruit flies and pests:
- Vapour Heat Treatment (VHT): Saturated water vapour applied at $47.5^\circ\text{C}$ for mangoes.
- Irradiation: Ionizing gamma/X-ray irradiation (typically $400\text{ Gy}$).
- Hot Water Treatment (HWT): Immersion in hot water ($48^\circ\text{C}$).
- Sulphitation: A chemical preserving and anti-browning treatment using sulfur dioxide ($SO_2$) in dried raisins and apricots, not a quarantine treatment.
- Correct Option: Option 3 (Sulphitation treatment).
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