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Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits

Little data is available in the scientific literature on postharvest changes taking place in Syzygium aqueum fruits, an increasingly popular fruit in the Asian region. In this study the postharvest physico-chemical and mechanical properties, namely, fruit color, weight loss, pulp firmness, total sol...

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Main Authors: Tehrani, M., Chandran, S., Hossain, A.B.M.S., Nasrulhaq-Boyce, A.
Format: Article
Language:English
Published: 2011
Subjects:
QH301 Biology
Online Access:http://eprints.um.edu.my/7775/1/Postharvest_physico-chemical_and_mechanical_changes_in_jambu_air_%28Syzygium_aqueum_Alston%29_fruits.pdf
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spelling my.um.eprints.77752014-12-26T02:53:07Z http://eprints.um.edu.my/7775/ Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits Tehrani, M. Chandran, S. Hossain, A.B.M.S. Nasrulhaq-Boyce, A. QH301 Biology Little data is available in the scientific literature on postharvest changes taking place in Syzygium aqueum fruits, an increasingly popular fruit in the Asian region. In this study the postharvest physico-chemical and mechanical properties, namely, fruit color, weight loss, pulp firmness, total soluble solids, pH and titratable acidity were determined during the postharvest storage period under ambient conditions of Syzygium aqueum fruits. It was observed that weight loss, total soluble solids (TSS) and pH of the jambu air fruits increased with time whilst pulp firmness and the color index of the fruits decreased. Analysis of the antioxidant activity, determined in the methanol extracts of the jambu fruit extracts over a period of 18 days after harvesting, using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method, showed that the antioxidant activity increased gradually during postharvest ripening. The total phenol content determined by the Folin-Ciocalteau method revealed a high concentration of phenol content in the jambu air fruits, with values around 344.25+/-107.68 mg gallic acid equivalent (GAE) / 100g fresh fruit. Similarly, the flavonoid content measured spectrophotometrically, using the aluminium chloride colorimetric assay, also showed an increasing trend over the same period. The results were expressed as mg of ascorbic acid equivalent (AAE), gallic acid equivalent (GAE) and catechin equivalent (CE) per 100g of sample. These results represent new data on postharvest changes occurring in Syzygium aqueum fruits and show that this increasingly popular fruit has great potential for future development in the agriculture sector. 2011 Article PeerReviewed application/pdf en http://eprints.um.edu.my/7775/1/Postharvest_physico-chemical_and_mechanical_changes_in_jambu_air_%28Syzygium_aqueum_Alston%29_fruits.pdf Tehrani, M. and Chandran, S. and Hossain, A.B.M.S. and Nasrulhaq-Boyce, A. (2011) Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits. Australian Journal of Crop Science, 5 (1). pp. 32-38. ISSN 1835-2693
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic QH301 Biology
spellingShingle QH301 Biology
Tehrani, M.
Chandran, S.
Hossain, A.B.M.S.
Nasrulhaq-Boyce, A.
Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
description Little data is available in the scientific literature on postharvest changes taking place in Syzygium aqueum fruits, an increasingly popular fruit in the Asian region. In this study the postharvest physico-chemical and mechanical properties, namely, fruit color, weight loss, pulp firmness, total soluble solids, pH and titratable acidity were determined during the postharvest storage period under ambient conditions of Syzygium aqueum fruits. It was observed that weight loss, total soluble solids (TSS) and pH of the jambu air fruits increased with time whilst pulp firmness and the color index of the fruits decreased. Analysis of the antioxidant activity, determined in the methanol extracts of the jambu fruit extracts over a period of 18 days after harvesting, using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method, showed that the antioxidant activity increased gradually during postharvest ripening. The total phenol content determined by the Folin-Ciocalteau method revealed a high concentration of phenol content in the jambu air fruits, with values around 344.25+/-107.68 mg gallic acid equivalent (GAE) / 100g fresh fruit. Similarly, the flavonoid content measured spectrophotometrically, using the aluminium chloride colorimetric assay, also showed an increasing trend over the same period. The results were expressed as mg of ascorbic acid equivalent (AAE), gallic acid equivalent (GAE) and catechin equivalent (CE) per 100g of sample. These results represent new data on postharvest changes occurring in Syzygium aqueum fruits and show that this increasingly popular fruit has great potential for future development in the agriculture sector.
format Article
author Tehrani, M.
Chandran, S.
Hossain, A.B.M.S.
Nasrulhaq-Boyce, A.
author_facet Tehrani, M.
Chandran, S.
Hossain, A.B.M.S.
Nasrulhaq-Boyce, A.
author_sort Tehrani, M.
title Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
title_short Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
title_full Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
title_fullStr Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
title_full_unstemmed Postharvest physico-chemical and mechanical changes in jambu air (Syzygium aqueum Alston) fruits
title_sort postharvest physico-chemical and mechanical changes in jambu air (syzygium aqueum alston) fruits
publishDate 2011
url http://eprints.um.edu.my/7775/1/Postharvest_physico-chemical_and_mechanical_changes_in_jambu_air_%28Syzygium_aqueum_Alston%29_fruits.pdf
http://eprints.um.edu.my/7775/
_version_ 1643688125192470528
score 13.211869

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