Abstract
Abstract BACKGROUND Irrigation of olives increases fruit and oil yields. Due to scarcity of freshwater, low‐quality water including recycled wastewater (RWW) is utilized in orchards. Here, effects of irrigation with RWW and of fertilization on the composition and quality of olive oil were studied. RESULTS Long‐term RWW irrigation of ‘Barnea’ and ‘Leccino’ olive had no significant negative effects on either oil composition or quality parameters, including free fatty acids (FFAs), peroxide value (PV), total phenolics content (TPC), fatty acid profiles and organoleptic characteristics. The average FFA contents for both cultivars were less than 0.8% during most of the experimental period, except the seasons 2009 and 2012–2013 for Barnea where the values were raised up to 1.4%. The measured PV levels were less than 9 and 5 mmol O 2 kg ‐1 oil for Barnea and Leccino, respectively. In the last season of the experiment for each cultivar, higher TPC were observed in oils obtained from RWW irrigation with reduced fertilization (Re–) as compared to the treatments with the recommended fertilization [freshwater irrigation (Fr) and RWW irrigation (Re+) with standard dose of fertilizers], where the TPC increment exceeded 70% in Barnea and 25% in Leccino. The treatments had only minor effects on the fatty acid profile, reflected in slightly altered levels of C18:2 and C18:3 fatty acids. CONCLUSION The use of RWW, combined with the consideration of nutrients arriving with such water to provide appropriate fertilization, was found suitable for olive irrigation to ensure optimal yields while preserving oil quality. © 2019 Society of Chemical Industry
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Long term recycled wastewater irrigation had no significant negative effect on oil composition or quality in Barnea olive.
- Taxon
- olive
Olea europaeae0 - Material
- ‘Barnea’e0
- Treatment
- Long‐term RWW irrigatione0
- Outcome
- oil composition or quality parameterse0
- Direction
- no significant negative effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long‐term RWW irrigation of ‘Barnea’ and ‘Leccino’ olive had no significant negative effects on either oil composition or quality parameters, including free fatty acids (FFAs), peroxide value (PV), total phenolics content (TPC), fatty acid profiles and organoleptic characteristics”
Claim · model-written summary
Long term recycled wastewater irrigation had no significant negative effect on oil composition or quality in Leccino olive.
- Taxon
- oliveOlea europaeae0
- Material
- ‘Leccino’e0
- Treatment
- Long‐term RWW irrigatione0
- Outcome
- oil composition or quality parameterse0
- Direction
- no significant negative effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long‐term RWW irrigation of ‘Barnea’ and ‘Leccino’ olive had no significant negative effects on either oil composition or quality parameters, including free fatty acids (FFAs), peroxide value (PV), total phenolics content (TPC), fatty acid profiles and organoleptic characteristics”
Claim · model-written summary
Average FFA content for both cultivars was below 0.8% for most of the study.
- Taxon
- oliveOlea europaeat0
- Outcome
- average FFA contentse0
- Direction
- less thane0
- Value
- 0.8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average FFA contents for both cultivars were less than 0.8% during most of the experimental period”
t0“olive oil composition and quality”
Claim · model-written summary
Barnea FFA reached 1.4% in 2009 and 2012–2013.
- Taxon
- oliveOlea europaeat0
- Material
- Barneae0
- Outcome
- valuese0
- Direction
- raisede0
- Value
- 1.4%e0
- Qualifier
- seasons 2009 and 2012–2013e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“except the seasons 2009 and 2012–2013 for Barnea where the values were raised up to 1.4%”
t0“olive oil composition and quality”
Claim · model-written summary
Barnea peroxide value was below 9 mmol O 2 kg ‐1 oil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PV levels were less than 9 and 5 mmol O 2 kg ‐1 oil for Barnea and Leccino, respectively”
t0“olive oil composition and quality”
Claim · model-written summary
Leccino peroxide value was below 5 mmol O 2 kg ‐1 oil.
- Taxon
- oliveOlea europaeat0
- Material
- Leccinoe0
- Outcome
- PV levelse0
- Direction
- less thane0
- Value
- 5 mmol O 2 kg ‐1 oile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PV levels were less than 9 and 5 mmol O 2 kg ‐1 oil for Barnea and Leccino, respectively”
t0“olive oil composition and quality”
Claim · model-written summary
Reduced fertilization under recycled wastewater increased Barnea oil TPC by more than 70% versus recommended fertilization.
- Taxon
- oliveOlea europaeat0
- Material
- Barneae0
- Treatment
- RWW irrigation with reduced fertilization (Re–)e0
- Outcome
- TPCe0
- Direction
- highere0
- Value
- 70%e0
- Comparator
- treatments with the recommended fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher TPC were observed in oils obtained from RWW irrigation with reduced fertilization (Re–) as compared to the treatments with the recommended fertilization [freshwater irrigation (Fr) and RWW irrigation (Re+) with standard dose of fertilizers], where the TPC increment exceeded 70% in Barnea and 25% in Leccino”
t0“olive oil composition and quality”
Claim · model-written summary
Reduced fertilization under recycled wastewater increased Leccino oil TPC by more than 25% versus recommended fertilization.
- Taxon
- oliveOlea europaeat0
- Material
- Leccinoe0
- Treatment
- RWW irrigation with reduced fertilization (Re–)e0
- Outcome
- TPCe0
- Direction
- highere0
- Value
- 25%e0
- Comparator
- treatments with the recommended fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher TPC were observed in oils obtained from RWW irrigation with reduced fertilization (Re–) as compared to the treatments with the recommended fertilization [freshwater irrigation (Fr) and RWW irrigation (Re+) with standard dose of fertilizers], where the TPC increment exceeded 70% in Barnea and 25% in Leccino”
t0“olive oil composition and quality”
Claim · model-written summary
Treatments slightly altered C18:2 and C18:3 fatty acid levels.
- Taxon
- oliveOlea europaeat0
- Treatment
- treatmentse0
- Outcome
- levels of C18:2 and C18:3 fatty acidse0
- Direction
- slightly alterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments had only minor effects on the fatty acid profile, reflected in slightly altered levels of C18:2 and C18:3 fatty acids”
t0“olive oil composition and quality”
Claim · model-written summary
The authors found RWW with adjusted fertilization suitable for olive irrigation while maintaining yield and oil quality.
- Taxon
- oliveOlea europaeae0
- Treatment
- RWWe0
- Outcome
- olive irrigation to ensure optimal yields while preserving oil qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of RWW, combined with the consideration of nutrients arriving with such water to provide appropriate fertilization, was found suitable for olive irrigation to ensure optimal yields while preserving oil quality”
The same questions in other papers
fertilization · quality: phytochemicals · Olea europaea (common olive)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
3 papers more in this group
See all 7 papers →irrigation · quality: phytochemicals · Olea europaea (common olive)Positive and negative results
11 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
14 papers more in this group
See all 18 papers →irrigation · quality: oil · Olea europaea (common olive)Positive and negative results
15 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
27 papers more in this group
See all 31 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.