Biochemical changes in pear fruits during storage at ambient conditions

‘Patharnakh’ (PN) (Pyrus pyrifolia Burm. Nakai) and ‘Punjab Beauty’ (PB) [Pyrus communis L. × Pyrus pyrifolia Burm. (Nakai)] are leading low-chill pear cultivars of subtropics of India. Diurnal temperature and relative humidity during fruit harvest period is high which considerably affect the shelf...

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Autores principales:	Avninder Kaur, Sucheta Sharma, Navprem Singh
Formato:	article
Lenguaje:	EN
Publicado:	Firenze University Press 2021
Materias:	Cellulase minerals 'Patharnakh' pectinmethlestrase polygalacturonase 'Punjab Beauty' Biology (General) QH301-705.5 Botany QK1-989
Acceso en línea:	https://doaj.org/article/cdb512092af84a458cf119c425c6e1db
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id	oai:doaj.org-article:cdb512092af84a458cf119c425c6e1db
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spelling	oai:doaj.org-article:cdb512092af84a458cf119c425c6e1db2021-11-08T13:14:59ZBiochemical changes in pear fruits during storage at ambient conditions10.36253/ahsc-107400394-61691592-1573https://doaj.org/article/cdb512092af84a458cf119c425c6e1db2021-08-01T00:00:00Zhttps://oaj.fupress.net/index.php/ahs/article/view/10740https://doaj.org/toc/0394-6169https://doaj.org/toc/1592-1573 ‘Patharnakh’ (PN) (Pyrus pyrifolia Burm. Nakai) and ‘Punjab Beauty’ (PB) [Pyrus communis L. × Pyrus pyrifolia Burm. (Nakai)] are leading low-chill pear cultivars of subtropics of India. Diurnal temperature and relative humidity during fruit harvest period is high which considerably affect the shelf life of fruits. Fruits of ‘PN’ and ‘PB’ pear harvested at physiological maturity were stored for 12 days at ambient temperature and effects of storage temperature on physical and qualitative parameters were studied. Both cultivars showed reduction in fruit weight and firmness, reducing sugars, sucrose, starch and pectin content. However, total soluble solids and juice acid content increased during storage. Sucrose synthase activity and sucrose content showed significant positive correlation in ‘PN’ cultivar. Activities of fruit softening enzymes such as polygalacturonase (PG) and cellulase was enhanced; whereas, pectinmethylesterase (PME) was reduced during storage. Fruit firmness was negatively correlated with PG in both the cultivars. In ‘PN’ cultivar, fruit firmness was positively correlated with cellulase and negatively with PME enzyme but reverse trend was observed in ‘PB’ cultivar. Fruit minerals content didn’t show any substantial disparities in both the cultivars during storage. ‘Patharnakh’ and ‘Punjab Beauty’ fruits maintain desirable quality parameters up to 6-9 days and 3-6 days, respectively, during storage at ambient conditions. Avninder KaurSucheta SharmaNavprem SinghFirenze University PressarticleCellulaseminerals'Patharnakh'pectinmethlestrasepolygalacturonase'Punjab Beauty'Biology (General)QH301-705.5BotanyQK1-989ENAdvances in Horticultural Science, Vol 35, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cellulase minerals 'Patharnakh' pectinmethlestrase polygalacturonase 'Punjab Beauty' Biology (General) QH301-705.5 Botany QK1-989
spellingShingle	Cellulase minerals 'Patharnakh' pectinmethlestrase polygalacturonase 'Punjab Beauty' Biology (General) QH301-705.5 Botany QK1-989 Avninder Kaur Sucheta Sharma Navprem Singh Biochemical changes in pear fruits during storage at ambient conditions
description	‘Patharnakh’ (PN) (Pyrus pyrifolia Burm. Nakai) and ‘Punjab Beauty’ (PB) [Pyrus communis L. × Pyrus pyrifolia Burm. (Nakai)] are leading low-chill pear cultivars of subtropics of India. Diurnal temperature and relative humidity during fruit harvest period is high which considerably affect the shelf life of fruits. Fruits of ‘PN’ and ‘PB’ pear harvested at physiological maturity were stored for 12 days at ambient temperature and effects of storage temperature on physical and qualitative parameters were studied. Both cultivars showed reduction in fruit weight and firmness, reducing sugars, sucrose, starch and pectin content. However, total soluble solids and juice acid content increased during storage. Sucrose synthase activity and sucrose content showed significant positive correlation in ‘PN’ cultivar. Activities of fruit softening enzymes such as polygalacturonase (PG) and cellulase was enhanced; whereas, pectinmethylesterase (PME) was reduced during storage. Fruit firmness was negatively correlated with PG in both the cultivars. In ‘PN’ cultivar, fruit firmness was positively correlated with cellulase and negatively with PME enzyme but reverse trend was observed in ‘PB’ cultivar. Fruit minerals content didn’t show any substantial disparities in both the cultivars during storage. ‘Patharnakh’ and ‘Punjab Beauty’ fruits maintain desirable quality parameters up to 6-9 days and 3-6 days, respectively, during storage at ambient conditions.
format	article
author	Avninder Kaur Sucheta Sharma Navprem Singh
author_facet	Avninder Kaur Sucheta Sharma Navprem Singh
author_sort	Avninder Kaur
title	Biochemical changes in pear fruits during storage at ambient conditions
title_short	Biochemical changes in pear fruits during storage at ambient conditions
title_full	Biochemical changes in pear fruits during storage at ambient conditions
title_fullStr	Biochemical changes in pear fruits during storage at ambient conditions
title_full_unstemmed	Biochemical changes in pear fruits during storage at ambient conditions
title_sort	biochemical changes in pear fruits during storage at ambient conditions
publisher	Firenze University Press
publishDate	2021
url	https://doaj.org/article/cdb512092af84a458cf119c425c6e1db
work_keys_str_mv	AT avninderkaur biochemicalchangesinpearfruitsduringstorageatambientconditions AT suchetasharma biochemicalchangesinpearfruitsduringstorageatambientconditions AT navpremsingh biochemicalchangesinpearfruitsduringstorageatambientconditions
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Biochemical changes in pear fruits during storage at ambient conditions

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