Journal
X INTERNATIONAL PEACH SYMPOSIUM
Volume 1352, Issue -, Pages 237-244Publisher
INT SOC HORTICULTURAL SCIENCE
DOI: 10.17660/ActaHortic.2022.1352.32
Keywords
anthocyanins; browning; fruit; origin; quality; PAL; phenols
Funding
- MCIN/AEI [RTI-2018-094176-R-C33]
- ERDF A way of making EUROPE
- Regional Government of Aragon [A44, T07_17R, A22_20R]
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This study evaluated the performance of local Spanish and non-Spanish peach cultivars under cold storage conditions. The results showed that the origin of the cultivars was a key factor influencing metabolite profiles and susceptibility to chilling injury.
Peaches and nectarines are climacteric fruits with a relatively short storage potential due to rapid ripening and deterioration. Cold storage is effective in extending shelf-life, and preserving fruit quality properties; however, it can lead to the development of a disorder known as chilling injury (CI), perceived when fruit reaches consumer. In the present work, 51 local Spanish and 57 non-Spanish cultivars from the peach germplasm collection established at the Experimental Station of Aula Dei (Zaragoza, Spain) were evaluated after storage of fruit at 5 degrees C (CI inducing conditions) for 2 and 4 weeks. Given the large influence of pre-harvest factors on post-harvest performance of peaches, harvest and postharvest phenotype information was obtained. Basic fruit quality parameters as soluble solids content (SSC), firmness (N), titratable acidity (TA), and ripening index (SSC/TA) were determined. Biochemical compounds such as total phenolics content (TPC) and anthocyanins content (AC) were also obtained. In addition, the enzymatic activity of phenylalanine ammonia-lyase (PAL) was determined to study its correlation with CI symptoms. Statistical analyses emphasized differences between the assayed cultivars and highlighted their origin as a key factor affecting metabolite profiles and susceptibility to chilling injury during cold storage.
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