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https://hdl.handle.net/2440/137316
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Type: | Journal article |
Title: | Characterisation of internal oxygen concentration of strawberry (Fragaria × ananassa) and blueberry (Vaccinium corymbosum) |
Author: | Xiao, Z. Tyerman, S.D. Stait-Gardner, T. Price, W.S. Pagay, V. Schmidtke, L.M. Rogiers, S.Y. |
Citation: | Functional Plant Biology: an international journal of plant function, 2023; 50(3):256-265 |
Publisher: | CSIRO Publishing |
Issue Date: | 2023 |
ISSN: | 1445-4408 1445-4416 |
Editor: | Shabala, S. |
Statement of Responsibility: | Zeyu Xiao, Stephen D. Tyerman, Timothy Stait-Gardner, William S. Price, Vinay Pagay, Leigh M. Schmidtke and Suzy Y. Rogiers |
Abstract: | Gas exchange mechanisms play crucial roles in maintaining fruit post-harvest quality in perishable fruit such as strawberry (Fragaria × ananassa Duch.) and blueberry (Vaccinium corymbosum L.). The internal oxygen concentration ([O2]) of strawberry and blueberry were measured using Clark-type oxygen sensing electrodes. The volume of intercellular voids in strawberry was obtained by microcomputed tomography (micro-CT). In both berries, internal [O2] was consistent and relatively high across measured tissues. The overall [O2] was well above the Michaelis constant (Km) for cytochrome c oxidase in both fruit and different from previously examined grape (Vitis vinifera L.) berry mesocarp with near zero minimum [O2]. In strawberry and blueberry, cell vitality was also maintained at full maturity in the mesocarp. Higher storage temperature (i.e. 20 vs 4°C) reduced internal [O2] of strawberry. Pedicel detachment in blueberry was associated with greater fruit dehydration and lower internal [O2] after short-term storage of 12 h. The results suggest that the intercellular voids of the fruit’s mesocarp provide an efficient gas exchange route for maintaining high fruit internal [O2] post-harvest. |
Keywords: | 3D microstructure; Fragaria × ananassa; intercellular voids; micro-CT; modified storage conditions; oxygen measurement; post-harvest; Vaccinium corymbosum |
Description: | Published: 16 December 2022 |
Rights: | © 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons AttributionNonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND). |
DOI: | 10.1071/fp21259 |
Grant ID: | http://purl.org/au-research/grants/arc/IC170100008 |
Published version: | http://dx.doi.org/10.1071/fp21259 |
Appears in Collections: | Agriculture, Food and Wine publications |
Files in This Item:
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hdl_137316.pdf | Published version | 4.19 MB | Adobe PDF | View/Open |
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