Articles
Curative efficacy of slightly alkaline electrolyzed water treatment against Botrytis cinerea on Granny Smith apples
Article number
1348_13
Pages
93 – 98
Language
English
Abstract
Botrytis cinerea is one of the major causes of rotting in apple during postharvest storage and can cause significant economic loss.
Over the years, numerous disinfection techniques have been used to maintain the quality and safety of fresh fruit, but the demand for safer alternatives grows.
The aim of this study was to investigate the curative efficacy of a slightly alkaline electrolyzed water (SAl-EW) treatment (pH 6.7 and oxidation-reduction potential (ORP, >800 mV)) against B. cinerea on Granny Smith apples.
Apples were injured on opposite ends using a 3-mm cork-borer and the injured spots were inoculated with spore concentration of 1×104 L‑1 of B. cinerea, and incubated at 20°C for 20 h to allow for spore germination.
Thereafter, apples were dipped in different concentrations of SAl-EW (50 to 500 mg L‑1) for 15 min and stored at 5°C for 21 days.
Measurements of the lesion zones were carried out weekly for samples stored at 5°C, and after two days of storage at 24°C for accelerated shelf life study.
The SAl-EW treatments against B. cinerea resulted in significant (p≤0.05) reduction in lesion zones of decay across all concentrations in comparison to the control.
The curative efficacy of the treatments was most effective at the highest concentration of 500 mg L‑1, followed by 400 mg L‑1, and 300 mg L‑1 for treated apples.
However, SAl-EW concentrations below 300 mg L‑1 showed better visual quality attributes for treated apples.
This result indicated that SAl-EW treatment was effective as an anti-fungal treatment against B. cinerea. These findings suggest the potential of combining lower concentrations of SAl-EW with other hurdle techniques for synergistic anti-fungal effects and better preservation of fruit quality attributes.
Over the years, numerous disinfection techniques have been used to maintain the quality and safety of fresh fruit, but the demand for safer alternatives grows.
The aim of this study was to investigate the curative efficacy of a slightly alkaline electrolyzed water (SAl-EW) treatment (pH 6.7 and oxidation-reduction potential (ORP, >800 mV)) against B. cinerea on Granny Smith apples.
Apples were injured on opposite ends using a 3-mm cork-borer and the injured spots were inoculated with spore concentration of 1×104 L‑1 of B. cinerea, and incubated at 20°C for 20 h to allow for spore germination.
Thereafter, apples were dipped in different concentrations of SAl-EW (50 to 500 mg L‑1) for 15 min and stored at 5°C for 21 days.
Measurements of the lesion zones were carried out weekly for samples stored at 5°C, and after two days of storage at 24°C for accelerated shelf life study.
The SAl-EW treatments against B. cinerea resulted in significant (p≤0.05) reduction in lesion zones of decay across all concentrations in comparison to the control.
The curative efficacy of the treatments was most effective at the highest concentration of 500 mg L‑1, followed by 400 mg L‑1, and 300 mg L‑1 for treated apples.
However, SAl-EW concentrations below 300 mg L‑1 showed better visual quality attributes for treated apples.
This result indicated that SAl-EW treatment was effective as an anti-fungal treatment against B. cinerea. These findings suggest the potential of combining lower concentrations of SAl-EW with other hurdle techniques for synergistic anti-fungal effects and better preservation of fruit quality attributes.
Publication
Authors
N.E. Nyamende, Z. Keyser, Z.A. Belay, A.B. Oyenihi, O.J. Caleb
Keywords
anti-fungal treatment, fruit quality and safety, decay, synergistic effects
Groups involved
- Division Plant Genetic Resources, Breeding and Biotechnology
- Division Tropical and Subtropical Fruit and Nuts
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Vine and Berry Fruits
- Division Ornamental Plants
- Division Vegetables, Roots and Tubers
- Division Plant-Environment Interactions in Field Systems
- Division Greenhouse and Indoor Production Horticulture
- Division Postharvest and Quality Assurance
- Division Precision Horticulture and Engineering
- Division Horticulture for Human Health
- Division Horticulture for Development
- Division Landscape and Urban Horticulture
- Commission Banana
- Commission Cultivar Registration
- Commission Agroecology and Organic Farming Systems
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