Abstract
The present work was aimed at evaluating, under natural situations (field of olive trees, Olea europea cv Chemlali), the effects of one-year agronomic application of an olive mill wastewater (OMW) biologically derived compost. The experimental study was carried in 2014 in an olive orchard situated at Jammel (region of Monastir-Tunisia). An experimental plot (TM, 50 olive trees) was amended on February 2014 (the 'Off year) with 50 m 3 /ha. The plot TC (50 olive trees) was not amended and served as a control. After one year of OMW application, at harvest, olive fruits were collected and pomological characteristics were determined. Olive oil was extracted and biochemical parameters were studied. Statistical analyses showed that short-term field application of OMW affected negatively carpometric characteristics of olive fruits and oil content. Oil produced from TM had a decreased pigment content and oxidative stability. Moreover, the level of MUFA, particularly oleic acid, as well as C18:1/C18:2 and MUFA/PUFA ratios were negatively influenced by OMW amendment which affects negatively olive oil quality and nutritional value. These findings must be taken into consideration when developing strategies for oil quality enhancement, especially in an exporting country like Tunisia.
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Claims 6
Claim · model-written summary
OMW application negatively affected olive fruit carpometric characteristics.
- Taxon
- olive trees
Olea europaeae1 - Treatment
- OMWe0
- Outcome
- carpometric characteristics of olive fruitse0
- Direction
- affected negativelye0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“short-term field application of OMW affected negatively carpometric characteristics of olive fruits and oil content.”
e1“The plot TC (50 olive trees) was not amended and served as a control.”
Claim · model-written summary
OMW application negatively affected olive oil content.
- Taxon
- olive treesOlea europaeae1
- Treatment
- OMWe0
- Outcome
- oil contente0
- Direction
- affected negativelye0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“short-term field application of OMW affected negatively carpometric characteristics of olive fruits and oil content.”
e1“The plot TC (50 olive trees) was not amended and served as a control.”
Claim · model-written summary
Oil from the amended plot had decreased pigment content.
- Taxon
- olive treesOlea europaeae1
- Treatment
- amendede1
- Outcome
- pigment contente0
- Direction
- decreasede0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oil produced from TM had a decreased pigment content and oxidative stability.”
e1“An experimental plot (TM, 50 olive trees) was amended on February 2014 (the 'Off year) with 50 m 3 /ha. The plot TC (50 olive trees) was not amended and served as a control.”
Claim · model-written summary
Oil from the amended plot had decreased oxidative stability.
- Taxon
- olive treesOlea europaeae1
- Treatment
- amendede1
- Outcome
- oxidative stabilitye0
- Direction
- decreasede0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oil produced from TM had a decreased pigment content and oxidative stability.”
e1“An experimental plot (TM, 50 olive trees) was amended on February 2014 (the 'Off year) with 50 m 3 /ha. The plot TC (50 olive trees) was not amended and served as a control.”
Claim · model-written summary
OMW amendment negatively influenced olive oil MUFA, especially oleic acid.
- Taxon
- olive treesOlea europaeae1
- Treatment
- OMW amendmente0
- Outcome
- level of MUFA, particularly oleic acide0
- Direction
- negatively influencede0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the level of MUFA, particularly oleic acid, as well as C18:1/C18:2 and MUFA/PUFA ratios were negatively influenced by OMW amendment”
e1“The plot TC (50 olive trees) was not amended and served as a control.”
Claim · model-written summary
OMW amendment negatively influenced C18:1/C18:2 and MUFA/PUFA ratios.
- Taxon
- olive treesOlea europaeae1
- Treatment
- OMW amendmente0
- Outcome
- C18:1/C18:2 and MUFA/PUFA ratiose0
- Direction
- negatively influencede0
- Comparator
- not amendede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the level of MUFA, particularly oleic acid, as well as C18:1/C18:2 and MUFA/PUFA ratios were negatively influenced by OMW amendment”
e1“The plot TC (50 olive trees) was not amended and served as a control.”
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