A sustainable phenolic compound extraction system from olive oil mill wastewater

Scalia, Giada La; Micale, Rosa; Cannizzaro, L.; Marra, Francesco Paolo

doi:10.1016/j.jclepro.2016.10.086

Cited by 51 publications

(16 citation statements)

References 26 publications

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“…It has been considered as the intermediate compound of an alternative biosynthetic pathway leading to oleuropein formation which acts as oleuropein precursor [36]. Although some researchers identified this compound in OMWW [37], we did not find it in our OMWW extract probably due to it is highly dependent on cultivar [38]. However, previous research confirmed that the addition of a phenolic concentrate during the malaxation phase significantly increased the content of Use of olive oil by-products for olive oil phenol-enrichment 1600425 (7 of 13) Figure 5.…”

Section: Qualitative Characterization Of Phenolic Fraction From Omwwcontrasting

confidence: 55%

Olive oil enrichment in phenolic compounds during malaxation in the presence of olive leaves or olive mill wastewater extracts

Kiritsakis

Rodríguez‐Pérez

Gerasopoulos

et al. 2017

Euro J Lipid Sci & Tech

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A combined study was performed to determine the effect of olive leaf aqueous extract (OLE), olive mill wastewater (OMWW) or water addition during the malaxation step on total phenolic content (TPC), antioxidant activity, virgin olive oil composition and quality parameters of olive oil. For these purposes, the Folin‐Ciocalteu assay, 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) assay, and HPLC‐ESI‐TOF/MS were employed. The experiments were carried out at semi‐industrial scale in a cold extraction olive oil mill using olives of Koroneiki cultivar. Olive oil produced by olive paste which was malaxed without adding water, OMWW, or OLE was employed as control. The use of OMWW and OLE allowed obtaining oils with higher significant TPC compared to that malaxed with water (146.2 and 151.8 vs. 132.8 μg Eq GAE/g oil, respectively). The antioxidant activity followed the same trend. The use of OMWW and OLE enabled an oil enrichment in oleuropein derivatives, especially in 3,4‐DHPEA‐EDA. Despite the fact that acidity and oxidation (K270 and K232 values) were higher in the aforementioned oils compared to the oil extracted with water, all values were under the European Union commission parameters for extra virgin olive oil (EVOO) denomination. However, only the oil extracted using OLE presented slightly higher fruity, bitter, and pungent positive attributes compared to the control and to the oil extracted with water, thus, making OLE a promising by‐product for improving olive oils. Practical applications: This research provides new insight for the improvement of olive oil extraction process in order to obtain high‐phenol EVOO which could be useful for the olive oil, nutraceuticals, and cosmeceuticals industries. Besides, this study could serve as a starting point for improving the olive oil production process, while reducing the impact of its by‐products. The addition of Olive mil wastewater (OMWW) and olive leaf extract during malaxation, allowed obtaining enriched oils with a higher content in total phenolics, and antioxidant activity compared to those obtained adding water. These enriched oils presentes higher quantities of oleuropein derivatives and specifically of 3,4‐DHPEA‐EDA.

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Section: Qualitative Characterization Of Phenolic Fraction From Omwwcontrasting

confidence: 55%

Olive oil enrichment in phenolic compounds during malaxation in the presence of olive leaves or olive mill wastewater extracts

Kiritsakis

Rodríguez‐Pérez

Gerasopoulos

et al. 2017

Euro J Lipid Sci & Tech

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“…Based on these characteristics as well as its cost‐effectiveness and common availability in the Mediterranean area, OP has been proposed as an alternative source of nutrients for domestic and aquatic animal feeding (Dal Bosco et al, ; Nasopoulou, Stamatakis, Demopoulos, & Zabetakis, ; Nasopoulou & Zabetakis, ). However, OP contains some ANFs such as fibre, lignin (Nasopoulou & Zabetakis, ) and polyphenol compounds broadly based tannins (Cioffi et al, ; La Scalia, Micale, Cannizzaro, & Marra, ; Nasopoulou & Zabetakis, ; Sicuro et al, ), which biologically display both positive (antioxidative and immunostimulant) and negative (anti‐nutritive) effects (Araujo, Pimentel, Alves, & Oliveira, ; Omnes et al, ). Hence, it is necessary to evaluate the feasibility of addition of OP in feeds for aquaculture fish species.…”

Section: Introductionmentioning

confidence: 99%

Effects of olive pomace on growth performance, digestibility, body composition and fatty acid profile in yearling Siberian sturgeon,Acipenser baerii(Brandt 1896)

et al. 2018

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Replacement of olive pomace (OP) with wheat flour in diet was studied in diet of yearling Siberian sturgeon (Acipenser baerii). Fish (165 ± 6.8 g) were randomly allocated to 15 fibreglass tanks (15 fish/tank, in triplicate). Fish were assigned to one of five dietary treatments at 19.1 ± 1.5°C for 8 weeks: control diet (crude protein and crude lipid at 514.6 and 188 g/kg, respectively) and four experimental diets with 20, 50, 75 and 100 g/kg OP to replace wheat flour in the experimental diets. No significant difference was observed in the final weight, feed conversion ratio, specific growth rate, hepatosomatic index, viscera‐somatic index and survival rate among the treatments (p > 0.05). No change was seen in digestibility of protein and lipid in diets containing 20 g/kg and 50 g/kg OP compared to control group, while these values decreased with increasing in OP above 50 g/kg. Digestibility of dry matter and gross energy among the treatments demonstrated no significant difference (p > 0.05). Polyunsaturated fatty acids, especially C22:6n3 (DHA), in the muscle of the fish fed 75 g/kg and 100 g/kg OP in diets were significantly higher than control group (p < 0.05). These data show that OP could be recommended as a substitute for wheat flour in diet of S. sturgeon but its utilization for other species warranted future works.

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“…Membrane microfiltration and ultrafiltration have been used as separation methods for olive mill waste water treated by Aspergillus niger enzymes, resulting in a concentration up to 7.2 g/L of hydroxytyrosol . Based also on membrane filtration and reverse osmosis processes, the economic feasibility of recovering phenolic compounds and reincorporating them into extra virgin olive oil during the malaxation phase was assessed, resulting in a payback period of less than four years and positive NPV for plant processing 10 000 kg/h …”

Section: Research On Different Types Of Olive‐derived Biomassesmentioning

confidence: 99%

Olive‐derived biomass as a source of energy and chemicals

Ruiz

Romero‐García

Romero

et al. 2017

Biofuels Bioprod Bioref

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Olive trees are cultivated in more than 40 countries worldwide over more than 10 million hectares. In addition to olive oil, a large amount of biomass is produced annually. All this biomass must be adequately handled and disposed of. Conventional disposal methods include direct burning or spreading in fields, but this has economical costs and environmental concerns, as well as wasting a source of energy and chemicals. This review summarizes the most recent proposals for the use of biomass derived from olive tree cultivation and olive oil production processes. Biomass produced from pruning, leaves, olive stones and pomace, extracted olive pomace, and olive waste water are considered, and the main options for processing are reviewed according to recent advances in the literature. The biorefinery concept applied to olive‐derived biomass is also presented and representative works are discussed. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd

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A sustainable phenolic compound extraction system from olive oil mill wastewater

Cited by 51 publications

References 26 publications

Olive oil enrichment in phenolic compounds during malaxation in the presence of olive leaves or olive mill wastewater extracts

Olive oil enrichment in phenolic compounds during malaxation in the presence of olive leaves or olive mill wastewater extracts

Effects of olive pomace on growth performance, digestibility, body composition and fatty acid profile in yearling Siberian sturgeon,Acipenser baerii(Brandt 1896)

Olive‐derived biomass as a source of energy and chemicals

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