New insights into early biochemical prediction of internal browning disorder in 'Conference' pears
View/Open
This document contains embargoed files until 2025-09-27
Publication date
2023-09-28ISSN
0925-5214
Abstract
This study aimed to identify markers in pear capable of predicting the development of internal browning disorder (IBD) at harvest or during early storage. ´Conference´ pears were harvested from different orchards at commercial maturity and stored under high CO2 atmosphere conditions to induce disorders. The predictive markers studied were associated with 1-aminocyclopropane-1-carboxylic acid (ACC) metabolism, antioxidants and the tricarboxylic acid cycle (TCA cycle). The partial least square (PLS) model built for prediction at harvest identified ACC, malonyl ACC (MACC), and dehydroascorbic acid (DHA): the oxidized form of ascorbate, as the best markers for defining initial fruit sensitivity to IBD. A clear relationship was also found between increases in succinate levels during the first two weeks of storage and the incidence and severity of IBD after storage. Collectively, the results presented in this work reinforce the idea that IBD is determined by initial fruit maturity. They also question the current dogma concerning ascorbate, suggesting that rather than ascorbate, the most reliable marker for sensibility at harvest is DHA. Our results also highlighted that increased succinate levels should be considered one of the earliest responses to damaging storage conditions and offer an interesting short-term marker for IBD. The paper discusses how succinate is regulated during storage in relation to IBD development and an explanatory model is presented
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
633 - Field crops and their production
Pages
34
Publisher
Elsevier
Is part of
Postharvest Biology and Technology
Citation
Christian Larrigaudière, Jose M. Barrera-Gavira, and Gemma Echeverría, “New Insights into Early Biochemical Prediction of Internal Browning Disorder in ‘Conference’ Pears,” Postharvest Biology and Technology 207 (January 1, 2024): 112595, https://doi.org/10.1016/j.postharvbio.2023.112595
Grant agreement number
FEADER/ / /EU/ /
Program
Postcollita
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2838]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/