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פותח על ידי קלירמאש פתרונות בע"מ -
The significance of postharvest disinfection for prevention of internal decay of table grapes after storage
Year:
2015
Source of publication :
Scientia Horticulturae
Authors :
אלקן, נעם
;
.
דעוס, אבינועם
;
.
זוטחי, יוחנן
;
.
ליכטר, אמנון
;
.
קפלונוב, טטיאנה
;
.
Volume :
192
Co-Authors:
Lee, J.S., Postharvest Research Team, National Institute of Horticultural and Herbal Science, Rural Development Administration, Suwon, South Korea
Kaplunov, T., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Zutahy, Y., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Daus, A., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Alkan, N., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Lichter, A., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Facilitators :
From page:
346
To page:
349
(
Total pages:
4
)
Abstract:
Table grapes can accumulate significant amount of dust carrying potential inoculum and this can be a significant problem for late season grapes or in regions with high dust content. Internal decay of table grapes during storage under SO2 atmosphere is expressed as visually intact berries but extensive internal decomposition. One hypothesis is that these symptoms are caused by latent infections of Botrytis cinerea or by another pathogen. Alternatively, SO2 restricts external fungal growth but its initial level is not sufficient to prevent penetration of external natural inoculum into the berry. To test these hypotheses clusters of 'Scarlotta Seedless' grapes were externally disinfected by dipping in ethanol after harvest and cold-stored in the presence of one or two SO2 sheets for 6, 10, or 14 weeks followed by 3 days at shelf life. After 6 weeks of storage the untreated control grapes contained 60% decay - mainly typical gray mold symptoms - whereas SO2-treated berries displayed internal decay without external symptoms. Ethanol reduced decay to 4.1% and the combination of ethanol treatment and SO2 sheets eliminated the symptoms completely. The effect of the combined treatment was sustained after 10 and 14 weeks of cold storage. Only B. cinerea was recovered from berries that showed internal decay, ruling out potential involvement other pathogens. While the untreated clusters appeared dusty with dull red color, after external disinfection the original red color of the berries was apparent. It can be concluded that external disinfection of grapes after harvest can prevent internal decay under conditions which restrict external fungal growth. © 2015 Elsevier B.V.
Note:
Related Files :
cold storage
color
Decay
ethanol
food storage
harvesting
horticulture
symptom
vine
Vitaceae
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scienta.2015.06.026
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
24859
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:10
Scientific Publication
The significance of postharvest disinfection for prevention of internal decay of table grapes after storage
192
Lee, J.S., Postharvest Research Team, National Institute of Horticultural and Herbal Science, Rural Development Administration, Suwon, South Korea
Kaplunov, T., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Zutahy, Y., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Daus, A., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Alkan, N., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
Lichter, A., Department of Postharvest Science, ARO, the Volcani Center, POB 6, Bet Dagan, Israel
The significance of postharvest disinfection for prevention of internal decay of table grapes after storage
Table grapes can accumulate significant amount of dust carrying potential inoculum and this can be a significant problem for late season grapes or in regions with high dust content. Internal decay of table grapes during storage under SO2 atmosphere is expressed as visually intact berries but extensive internal decomposition. One hypothesis is that these symptoms are caused by latent infections of Botrytis cinerea or by another pathogen. Alternatively, SO2 restricts external fungal growth but its initial level is not sufficient to prevent penetration of external natural inoculum into the berry. To test these hypotheses clusters of 'Scarlotta Seedless' grapes were externally disinfected by dipping in ethanol after harvest and cold-stored in the presence of one or two SO2 sheets for 6, 10, or 14 weeks followed by 3 days at shelf life. After 6 weeks of storage the untreated control grapes contained 60% decay - mainly typical gray mold symptoms - whereas SO2-treated berries displayed internal decay without external symptoms. Ethanol reduced decay to 4.1% and the combination of ethanol treatment and SO2 sheets eliminated the symptoms completely. The effect of the combined treatment was sustained after 10 and 14 weeks of cold storage. Only B. cinerea was recovered from berries that showed internal decay, ruling out potential involvement other pathogens. While the untreated clusters appeared dusty with dull red color, after external disinfection the original red color of the berries was apparent. It can be concluded that external disinfection of grapes after harvest can prevent internal decay under conditions which restrict external fungal growth. © 2015 Elsevier B.V.
Scientific Publication
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