Pathways of postharvest water loss from banana fruit

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Bishnu P. Khanal
  • Bimbisar Sangroula
  • Anil Bhattarai
  • Gustavo Klamer Almeida
  • Moritz Knoche
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Details

Original languageEnglish
Article number111979
JournalPostharvest biology and technology
Volume191
Early online date24 May 2022
Publication statusPublished - Sept 2022

Abstract

Transpiration affects the water balance of the skin of a banana. The objective was to monitor the skin permeance in ripening bananas and to identify the mechanism(s) and pathway(s) of water vapor movement from skin to atmosphere. Transpiration was quantified gravimetrically. Cumulative transpiration increased linearly with time. Inducing ripening using ethylene increased autocatalytic ethylene production, induced a change in skin color from green to yellow, but had no effect on the skin water vapor permeance. The permeance was highest at the calyx end of the fruit but there was no significant gradient of permeance along the remaining axis or among the three faces of the fruit. A banana fruit surface is stomatous. About 11% of the stomata were infiltrated by aqueous acridine orange; about 63% of stomata were infiltrated if a silicone surfactant was added. The skin permeance was closely related to the density of the stomata that were infiltrated with acridine orange without the surfactant. We calculate about 44% of total transpiration was stomatal, the remaining 56% was cuticular. The permeance of a hypothetical astomatous cuticle was estimated to be about 0.66 ( ± 0.06) × 10−4 m s−1. Along the cuticular pathway, the wax offered the largest resistance to transpiration, followed by the cutin matrix and, last, the cell wall. Transpiration rate was positively related to temperature, but negatively related to relative humidity. The results indicate transpiration is a physical process that occurs in ripening banana to about nearly equal extents via the stomata and via the cuticle.

Keywords

    Brown spots, Cuticle, Fruit skin, Musa, Stomata, Transpiration

ASJC Scopus subject areas

Cite this

Pathways of postharvest water loss from banana fruit. / Khanal, Bishnu P.; Sangroula, Bimbisar; Bhattarai, Anil et al.
In: Postharvest biology and technology, Vol. 191, 111979, 09.2022.

Research output: Contribution to journalArticleResearchpeer review

Khanal, BP, Sangroula, B, Bhattarai, A, Almeida, GK & Knoche, M 2022, 'Pathways of postharvest water loss from banana fruit', Postharvest biology and technology, vol. 191, 111979. https://doi.org/10.1016/j.postharvbio.2022.111979
Khanal, B. P., Sangroula, B., Bhattarai, A., Almeida, G. K., & Knoche, M. (2022). Pathways of postharvest water loss from banana fruit. Postharvest biology and technology, 191, Article 111979. https://doi.org/10.1016/j.postharvbio.2022.111979
Khanal BP, Sangroula B, Bhattarai A, Almeida GK, Knoche M. Pathways of postharvest water loss from banana fruit. Postharvest biology and technology. 2022 Sept;191:111979. Epub 2022 May 24. doi: 10.1016/j.postharvbio.2022.111979
Khanal, Bishnu P. ; Sangroula, Bimbisar ; Bhattarai, Anil et al. / Pathways of postharvest water loss from banana fruit. In: Postharvest biology and technology. 2022 ; Vol. 191.
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title = "Pathways of postharvest water loss from banana fruit",
abstract = "Transpiration affects the water balance of the skin of a banana. The objective was to monitor the skin permeance in ripening bananas and to identify the mechanism(s) and pathway(s) of water vapor movement from skin to atmosphere. Transpiration was quantified gravimetrically. Cumulative transpiration increased linearly with time. Inducing ripening using ethylene increased autocatalytic ethylene production, induced a change in skin color from green to yellow, but had no effect on the skin water vapor permeance. The permeance was highest at the calyx end of the fruit but there was no significant gradient of permeance along the remaining axis or among the three faces of the fruit. A banana fruit surface is stomatous. About 11% of the stomata were infiltrated by aqueous acridine orange; about 63% of stomata were infiltrated if a silicone surfactant was added. The skin permeance was closely related to the density of the stomata that were infiltrated with acridine orange without the surfactant. We calculate about 44% of total transpiration was stomatal, the remaining 56% was cuticular. The permeance of a hypothetical astomatous cuticle was estimated to be about 0.66 ( ± 0.06) × 10−4 m s−1. Along the cuticular pathway, the wax offered the largest resistance to transpiration, followed by the cutin matrix and, last, the cell wall. Transpiration rate was positively related to temperature, but negatively related to relative humidity. The results indicate transpiration is a physical process that occurs in ripening banana to about nearly equal extents via the stomata and via the cuticle.",
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note = "Funding Information: Many thanks first of all to Mr. Peter Grimm-Wetzel. He managed all the fruit, in perfect quality, used in the experiments. We also thank Mr. Simon Sitzenstock for his technical support during experimentation and Dr. Sandy Lang for his thoughtful comments on this manuscript. ",
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T1 - Pathways of postharvest water loss from banana fruit

AU - Khanal, Bishnu P.

AU - Sangroula, Bimbisar

AU - Bhattarai, Anil

AU - Almeida, Gustavo Klamer

AU - Knoche, Moritz

N1 - Funding Information: Many thanks first of all to Mr. Peter Grimm-Wetzel. He managed all the fruit, in perfect quality, used in the experiments. We also thank Mr. Simon Sitzenstock for his technical support during experimentation and Dr. Sandy Lang for his thoughtful comments on this manuscript.

PY - 2022/9

Y1 - 2022/9

N2 - Transpiration affects the water balance of the skin of a banana. The objective was to monitor the skin permeance in ripening bananas and to identify the mechanism(s) and pathway(s) of water vapor movement from skin to atmosphere. Transpiration was quantified gravimetrically. Cumulative transpiration increased linearly with time. Inducing ripening using ethylene increased autocatalytic ethylene production, induced a change in skin color from green to yellow, but had no effect on the skin water vapor permeance. The permeance was highest at the calyx end of the fruit but there was no significant gradient of permeance along the remaining axis or among the three faces of the fruit. A banana fruit surface is stomatous. About 11% of the stomata were infiltrated by aqueous acridine orange; about 63% of stomata were infiltrated if a silicone surfactant was added. The skin permeance was closely related to the density of the stomata that were infiltrated with acridine orange without the surfactant. We calculate about 44% of total transpiration was stomatal, the remaining 56% was cuticular. The permeance of a hypothetical astomatous cuticle was estimated to be about 0.66 ( ± 0.06) × 10−4 m s−1. Along the cuticular pathway, the wax offered the largest resistance to transpiration, followed by the cutin matrix and, last, the cell wall. Transpiration rate was positively related to temperature, but negatively related to relative humidity. The results indicate transpiration is a physical process that occurs in ripening banana to about nearly equal extents via the stomata and via the cuticle.

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KW - Fruit skin

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