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Maturity assessment at harvest and prediction of softening in an early and late season melting peach
Year:
2013
Source of publication :
Postharvest Biology and Technology
Authors :
Dagar, Anurag
;
.
Friedman, Haya
;
.
Lurie, Susan
;
.
Weksler, Asya
;
.
Volume :
76
Co-Authors:
Lurie, S., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Friedman, H., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Weksler, A., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Dagar, A., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
Eccher Zerbini, P., Horticultural Supply Chains Group, Department of Plant Sciences, Wageningen University, Wageningen, Netherlands
Facilitators :
From page:
10
To page:
16
(
Total pages:
7
)
Abstract:
For peaches and nectarines, establishing fruit maturity at harvest is a crucial issue, since fruit shelf-life potential and quality are closely related to fruit maturity. A portable instrument that measures IAD (the index of absorbance difference between 670 and 720nm) was used for monitoring the progression of ripening in two peach cultivars. IAD was measured at harvest in 'Oded' (an early season, fast melting flesh peach) and 'September Snow' (a late season, slow melting flesh peach) fruit. After harvest the fruit were divided into comparable lots and held at 20°C. The IAD and firmness were measured daily on a different lot. Firmness decay during shelf-life was analyzed by non-linear regression, using the IAD measured at harvest to determine the maturity of the fruit and to estimate the biological shift factor (BSF) which is related to the biological age of fruit. A logistic model developed for firmness decay with maturity assessment by time-resolved reflectance spectroscopy was used, where the time-resolved measurement was substituted by IAD. The R2 for 'Oded' softening was 0.86, while that of 'September Snow' was 0.66. IAD decay was analyzed by non linear mixed effects analysis, obtaining R2adj higher than 0.96 for both cultivars. IAD showed the same decay rate in the two cultivars, while softening rate was five times lower in the late 'September Snow' than in the early 'Oded' fruit. The measurement of IAD at harvest could be used to separate fruit into different groups according to their potential shelf-life. © 2012 Elsevier B.V.
Note:
Related Files :
Biological shift factor
chlorophyll
Non-destructive measurement
Prunus persica
Prunus persica nucipersica
ripening
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More details
DOI :
10.1016/j.postharvbio.2012.08.007
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31361
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
You may also be interested in
Scientific Publication
Maturity assessment at harvest and prediction of softening in an early and late season melting peach
76
Lurie, S., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Friedman, H., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Weksler, A., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Dagar, A., Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Bet Dagan, Israel, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
Eccher Zerbini, P., Horticultural Supply Chains Group, Department of Plant Sciences, Wageningen University, Wageningen, Netherlands
Maturity assessment at harvest and prediction of softening in an early and late season melting peach
For peaches and nectarines, establishing fruit maturity at harvest is a crucial issue, since fruit shelf-life potential and quality are closely related to fruit maturity. A portable instrument that measures IAD (the index of absorbance difference between 670 and 720nm) was used for monitoring the progression of ripening in two peach cultivars. IAD was measured at harvest in 'Oded' (an early season, fast melting flesh peach) and 'September Snow' (a late season, slow melting flesh peach) fruit. After harvest the fruit were divided into comparable lots and held at 20°C. The IAD and firmness were measured daily on a different lot. Firmness decay during shelf-life was analyzed by non-linear regression, using the IAD measured at harvest to determine the maturity of the fruit and to estimate the biological shift factor (BSF) which is related to the biological age of fruit. A logistic model developed for firmness decay with maturity assessment by time-resolved reflectance spectroscopy was used, where the time-resolved measurement was substituted by IAD. The R2 for 'Oded' softening was 0.86, while that of 'September Snow' was 0.66. IAD decay was analyzed by non linear mixed effects analysis, obtaining R2adj higher than 0.96 for both cultivars. IAD showed the same decay rate in the two cultivars, while softening rate was five times lower in the late 'September Snow' than in the early 'Oded' fruit. The measurement of IAD at harvest could be used to separate fruit into different groups according to their potential shelf-life. © 2012 Elsevier B.V.
Scientific Publication
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