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פותח על ידי קלירמאש פתרונות בע"מ -
Influence of time of harvest and maturity index on olive oil yield and quality
Year:
2011
Source of publication :
Scientia Horticulturae
Authors :
דג, ארנון
;
.
ציפורי, יצחק
;
.
Volume :
127
Co-Authors:
Dag, A., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
Kerem, Z., Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Yogev, N., Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Zipori, I., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
Lavee, S., Kennedy-Leigh Center for Horticultural Research, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel
Ben-David, E., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel, Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Facilitators :
From page:
358
To page:
366
(
Total pages:
9
)
Abstract:
Harvesting plays a major role in the virgin olive oil production line, being the most expensive single component, but also due to its significant effect on the whole year's produce. Previous studies have focused on the effects of harvest timing on either oil yield or quality. Here we determined the separate and combined effects of harvesting date, fruit maturation, cultivar and fruit load on olive oil quality and quantity. Cultivars typical to the Middle East region were selected: the traditional cv. Souri and the newer cv. Barnea, grown under intensive conditions. The results demonstrate fundamental differences between the two cultivars with respect to harvest strategy. In high-yielding 'Barnea', oil accumulation continued throughout the ripening season resulting in increasing yield of oil with time while maintaining high quality. Hence, exploiting the production potential in 'Barnea' requires late harvest and advanced fruit maturity. However, in heavily loaded 'Souri', oil accumulation was accompanied by early massive shedding of fruits. Furthermore, late harvest and advanced maturation in 'Souri' were associated with a sharp increase in free fatty acids combined with a rapid decline in polyphenol content, and in MUFA to PUFA and saturated to unsaturated fatty acid ratios, all resulting in loss of oil quality. Rapid decline in oil yield coupled with deterioration of oil quality call for early harvesting at low maturity index in 'Souri'. In medium-yielding trees of both cultivars, maturation progressed more rapidly, resulting in earlier harvest to utilize optimal oil potential. © 2010 Elsevier B.V.
Note:
Related Files :
BARNEA
fatty acid
fatty acid profile
harvesting
maturation
phenol
polyphenol
qualitative analysis
vegetable oil
Virgin olive oil
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scienta.2010.11.008
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25034
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:12
Scientific Publication
Influence of time of harvest and maturity index on olive oil yield and quality
127
Dag, A., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
Kerem, Z., Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Yogev, N., Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Zipori, I., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
Lavee, S., Kennedy-Leigh Center for Horticultural Research, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel
Ben-David, E., Gilat Research Center, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel, Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Influence of time of harvest and maturity index on olive oil yield and quality
Harvesting plays a major role in the virgin olive oil production line, being the most expensive single component, but also due to its significant effect on the whole year's produce. Previous studies have focused on the effects of harvest timing on either oil yield or quality. Here we determined the separate and combined effects of harvesting date, fruit maturation, cultivar and fruit load on olive oil quality and quantity. Cultivars typical to the Middle East region were selected: the traditional cv. Souri and the newer cv. Barnea, grown under intensive conditions. The results demonstrate fundamental differences between the two cultivars with respect to harvest strategy. In high-yielding 'Barnea', oil accumulation continued throughout the ripening season resulting in increasing yield of oil with time while maintaining high quality. Hence, exploiting the production potential in 'Barnea' requires late harvest and advanced fruit maturity. However, in heavily loaded 'Souri', oil accumulation was accompanied by early massive shedding of fruits. Furthermore, late harvest and advanced maturation in 'Souri' were associated with a sharp increase in free fatty acids combined with a rapid decline in polyphenol content, and in MUFA to PUFA and saturated to unsaturated fatty acid ratios, all resulting in loss of oil quality. Rapid decline in oil yield coupled with deterioration of oil quality call for early harvesting at low maturity index in 'Souri'. In medium-yielding trees of both cultivars, maturation progressed more rapidly, resulting in earlier harvest to utilize optimal oil potential. © 2010 Elsevier B.V.
Scientific Publication
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