Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening

Purpose: The rejection of fruits because of insufficient purple colour in the exocarp has limited the profitability of ‘Hass’ avocado (Persea americana Mill) fruit. Thus, this study investigated whether glucose infusion through the pedicel can trigger anthocyanin pigment synthesis and accumulation o...

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Autores principales:	Kingsly Shikwambana, Tieho Mafeo, Nhlanhla Mathaba
Formato:	article
Lenguaje:	EN
Publicado:	University of Birjand 2021
Materias:	anthocyanin chlorophyll cyanidin-3-o-glucoside persea americana mill Agriculture S
Acceso en línea:	https://doaj.org/article/d163ddbc17584b15b973d6b7d6e8946d
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spelling	oai:doaj.org-article:d163ddbc17584b15b973d6b7d6e8946d2021-11-06T05:42:08ZEffect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening2588-48832588-616910.22077/jhpr.2021.4254.1202https://doaj.org/article/d163ddbc17584b15b973d6b7d6e8946d2021-12-01T00:00:00Zhttps://jhpr.birjand.ac.ir/article_1825_9a7bf5e3408c33c632c58b4c52728aaf.pdfhttps://doaj.org/toc/2588-4883https://doaj.org/toc/2588-6169Purpose: The rejection of fruits because of insufficient purple colour in the exocarp has limited the profitability of ‘Hass’ avocado (Persea americana Mill) fruit. Thus, this study investigated whether glucose infusion through the pedicel can trigger anthocyanin pigment synthesis and accumulation of early harvested ‘Hass’ avocado exocarp, thereby resulting in improved colour development during ripening. Research method: ‘Hass’ fruit were continuously infused through the pedicel with distilled water and different glucose concentrations; 0.05, 0.13, 0.28 mM and control, therefore, assessed for fruit quality; firmness loss, visual colour) chromaticity parameters (lightness-L, chroma-C and hue-h°) and exocarp pigments (chlorophyll, carotenoids, anthocyanin and cyanidin-3-O-glucoside) during ripening at 25°C. Findings: Infusion of glucose and distilled water extended the ripening period by one day. Chlorophyll degradation was delayed in response to glucose infusions and distilled water compared to control. Results indicated that 0.05 and 0.13 mM glucose infusion increased anthocyanin and cyanidin-3-O-glucoside accumulation in the exocarp, correspondingly improving exocarp colour (visual colour) after 8 days at 25°C when compared with 0.28 mM, distilled water and control. Limitations: Anthocyanin-regulating enzymes and genes of the ‘Hass’ avocado fruit have not yet been identified. Originality/Value: This study provides insight into the possible role of C6 sugars in ‘Hass’ avocado fruit during postharvest ripening.By encouraging carbohydrate accumulation in the avocado fruit exocarp, postharvest poor exocarp colouration could be controlled.Kingsly ShikwambanaTieho MafeoNhlanhla MathabaUniversity of Birjandarticleanthocyaninchlorophyllcyanidin-3-o-glucosidepersea americana millAgricultureSENJournal of Horticulture and Postharvest Research, Vol 4, Iss Issue 4 - December 2021, Pp 439-452 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anthocyanin chlorophyll cyanidin-3-o-glucoside persea americana mill Agriculture S
spellingShingle	anthocyanin chlorophyll cyanidin-3-o-glucoside persea americana mill Agriculture S Kingsly Shikwambana Tieho Mafeo Nhlanhla Mathaba Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
description	Purpose: The rejection of fruits because of insufficient purple colour in the exocarp has limited the profitability of ‘Hass’ avocado (Persea americana Mill) fruit. Thus, this study investigated whether glucose infusion through the pedicel can trigger anthocyanin pigment synthesis and accumulation of early harvested ‘Hass’ avocado exocarp, thereby resulting in improved colour development during ripening. Research method: ‘Hass’ fruit were continuously infused through the pedicel with distilled water and different glucose concentrations; 0.05, 0.13, 0.28 mM and control, therefore, assessed for fruit quality; firmness loss, visual colour) chromaticity parameters (lightness-L, chroma-C and hue-h°) and exocarp pigments (chlorophyll, carotenoids, anthocyanin and cyanidin-3-O-glucoside) during ripening at 25°C. Findings: Infusion of glucose and distilled water extended the ripening period by one day. Chlorophyll degradation was delayed in response to glucose infusions and distilled water compared to control. Results indicated that 0.05 and 0.13 mM glucose infusion increased anthocyanin and cyanidin-3-O-glucoside accumulation in the exocarp, correspondingly improving exocarp colour (visual colour) after 8 days at 25°C when compared with 0.28 mM, distilled water and control. Limitations: Anthocyanin-regulating enzymes and genes of the ‘Hass’ avocado fruit have not yet been identified. Originality/Value: This study provides insight into the possible role of C6 sugars in ‘Hass’ avocado fruit during postharvest ripening.By encouraging carbohydrate accumulation in the avocado fruit exocarp, postharvest poor exocarp colouration could be controlled.
format	article
author	Kingsly Shikwambana Tieho Mafeo Nhlanhla Mathaba
author_facet	Kingsly Shikwambana Tieho Mafeo Nhlanhla Mathaba
author_sort	Kingsly Shikwambana
title	Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
title_short	Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
title_full	Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
title_fullStr	Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
title_full_unstemmed	Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening
title_sort	effect of postharvest glucose infusion on exocarp colour of ‘hass’ avocado (persea americana mill) during ripening
publisher	University of Birjand
publishDate	2021
url	https://doaj.org/article/d163ddbc17584b15b973d6b7d6e8946d
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Effect of postharvest glucose infusion on exocarp colour of ‘Hass’ avocado (Persea americana Mill) during ripening

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