Characterisation and induction of ‘etch’ browning in the skin of mango fruit

Tim J O'Hare; Ian S E Bally; Janelle M Dahler; Yolanta Saks; Steven J R Underhill

doi:10.1016/S0925-5214(99)00030-7

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Characterisation and induction of ‘etch’ browning in the skin of mango fruit

Journal article

Peer reviewed

Characterisation and induction of ‘etch’ browning in the skin of mango fruit

Tim J O'Hare, Ian S E Bally, Janelle M Dahler, Yolanta Saks and Steven J R Underhill

Postharvest Biology and Technology, Vol.16(3), pp.269-277

1999

DOI: https://doi.org/10.1016/S0925-5214(99)00030-7

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Abstract

Crop and Pasture Production

Horticultural Production

cell damage

detergents

sapburn

smear

lenticel spotting

mangifera

skin browning

The effects of detergents and mango sap on the development and anatomy of 'etch', a physiological skin disorder in mango (Mangifera indica L.) fruit, were examined. Etch was associated with a higher number of cracks in the cuticle than occurred in healthy tissue. Etch was induced on fruit dipped in the wetting agent Agral® at high concentrations (10, 50% v/v). Fruit kept in contact with pads saturated with low concentrations of detergents (Agral®, 0.1-1%; Amway LOC®, 0.1%) tended to develop etch at the perimeter of the contact area. Etch symptoms increased in severity with fruit ripening and increasing contact times with detergent. Lenticel spotting developed at lower detergent concentrations than were required for etch development. The oil, white oil/aqueous and blue lower aqueous components of mango sap were separated and applied to the skin of mangoes. No individual component resulted in more than mild perimeter etch. A 10:90 ratio of oil:aqueous fraction resulted in etch symptoms of moderate severity over the entire application area, but only when combined in wet contact with water or Agral®. The relevance of the results to mango postharvest handling systems is discussed.

Details

Title: Characterisation and induction of ‘etch’ browning in the skin of mango fruit
Authors: Tim J O'Hare (Author) - Queensland Horticulture Institute
Ian S E Bally (Author) - Queensland Horticulture Institute
Janelle M Dahler (Author) - Queensland Department of Primary Industries
Yolanta Saks (Author) - Haifa University, Israel
Steven J R Underhill (Author) - Queensland Department of Primary Industries
Publication details: Postharvest Biology and Technology, Vol.16(3), pp.269-277
Publisher: Elsevier BV
Date published: 1999
DOI: 10.1016/S0925-5214(99)00030-7
ISSN: 0925-5214
Organisation Unit: Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; Sustainability Research Cluster
Language: English
Record Identifier: 99449984502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Agronomy; Food Science & Technology; Horticulture

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