Antioxidant activity of phenolic fractions in olive mill wastewater

Azaizeh, Hassan; Halahlih, Fares; Najami, Naim; Brunner, D.; Faulstich, Martin; Tafesh, Ahmed

doi:10.1016/j.foodchem.2012.04.035

Cited by 59 publications

(29 citation statements)

References 32 publications

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“…Polyphenols extracted from OMWW were added to the diet in two differing amounts: 0.5 and 5 g/kg of diet, corresponding to 0.5 mg and 5 mg of OMWW extract/crayfish/die. The composition of the phenolic fraction extracted from OMWW is in agreement with the literature (Azaizeh et al., ; Kaleh & Geißen, ; Priore et al., ).…”

Section: Discussionsupporting

confidence: 90%

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¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

et al. 2017

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1H‐NMR analysis of the hepatopancreas, muscle and haemolymph of Astacus leptodactylus after feeding with polyphenol‐enriched diet is reported. 1H‐NMR spectra of lipophilic extracts showed the presence of cholesterol, fatty acid residues, phospholipids and triglycerides. 1H‐NMR spectra of aqueous extracts identified 35 metabolites in the hepatopancreas, 31 in the muscle and 22 in the haemolymph. A total of 20 metabolites (amino acids and their derivatives) were present in the hepatopancreas, the muscle and the haemolymph. A total of 10 metabolites were present in both the hepatopancreas and the muscle (five amino acids, 2‐hydroxybutyrate, choline, myo‐inositol, glycogen and uracil). 2‐Hydroxyisobutyrate and creatine were present in both the hepatopancreas and the haemolymph. Phosphorylethanolamine, phosphocholine and fumarate were present only in the hepatopancreas and isoleucine only in the muscle. Statistical analysis showed that the percentage of weight gain was statistically higher in polyphenol‐enriched diet groups compared to the control and that polyphenols had a stimulating effect on the general metabolism. No stress‐related metabolites were higher in crayfish fed with polyphenol‐enriched diet. Conversely, phosphatidylcholine, cholesterol and DHA, linked to resistance to environmental stress and diseases, were higher compared to the control diet. This study indicates that 1H‐NMR is a useful tool to study the metabolomics in relation to diet differences.

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Section: Discussionsupporting

confidence: 90%

“…The gradient elution was performed according to Azaizeh et al. () with some modifications. The mobile phase was 0.2% formic acid in water (A) versus methanol (B) for a total running time of 25 min.…”

Section: Methodsmentioning

confidence: 99%

¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

et al. 2017

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“…The environmental impact of OMW is mainly due to its high contents of organic matter, total suspended solids, a significant content of phytotoxic and antibacterial phenolic compounds, acidic pH, dark colour and unpleasant smell (Fiorentino et al, 2003;Greco et al, 2006;Azaizeh et al, 2012;Justino et al, 2012). Another characteristic of OMW (which is common to some other agricultural wastewaters such as those from wineries and sugarcane processing) is its seasonality, associated with the period of fruit harvesting.…”

Section: Introductionmentioning

confidence: 99%

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Dordio

Carvalho

2013

Science of The Total Environment

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. H I G H L I G H T S• CW with LECA substrate and Phragmites plants tested with agricultural wastewaters.• High removals of TSS, COD, NH 4 -N, polyphenols, a pharmaceutical and a pesticide.• Contact time of wastewaters with beds ranged from 3 to 9days in batch conditions.• Promising results suggest more studies in full-scale and more realistic conditions. Constructed wetlands (CWs) are receiving a renewed attention as a viable phytotechnology for treating agricultural wastewaters and for the removal of more specific pollutants, in particular recalcitrant ones. In this work, the performance of CW mesocosms using light expanded clay aggregates (LECA) as the bed's substrate and planted with Phragmites australis was investigated for treatment of olive mill wastewater (OMW), swine wastewater (SW) contaminated with oxytetracycline and water contaminated with herbicide MCPA (2-methyl-4-chlorophenoxyacetic acid). Both wastewaters (OMW and SW) initially presented high organic matter content and total suspended solids which were removed by the system with efficiencies higher than 80%. Removal of polyphenols in OMW and nitrogen compounds in SW also showed similar or higher efficiencies in comparison with other treatment systems reported in the literature. The antibiotic oxytetracycline was completely removed from SW within the assay period in unplanted LECA beds, but planted beds allowed a significantly faster removal. In regard to water contaminated with MCPA, the results showed that LECA has a large sorption capacity for this herbicide (removal efficiencies of 56-97%). In general, considerably higher pollutant removal efficiencies were obtained when plants were used (up to 28% higher). The results obtained are indicative that CWs with LECA as substrate may be an adequate option for agricultural wastewater treatment. a b s t r a c t a r t i c l e i n f o

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“…Although its fruit is mainly used as a food after processing for table olive and olive oil, it is used for preparing medical products, cosmetics and animal feed. There are many researches that have been done on the effects of oleuropein, one of the most important phenolic compounds extracted from olive leaves, on health [13–15]. In this case, the capacity of bglG to cleave oleuropein appears to be a very important property requested in various biotechnological tools.…”

Section: Resultsmentioning

confidence: 99%

Mastery of Cultural Conditions and Physico-chemical Properties Improves the Production and the Catalytic Efficiency of bglG

Saibi

Gargouri

2013

Appl Biochem Biotechnol

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Stachybotrys microspora is a filamentous fungus secreting multiple β-glucosidases. Two of them were characterized. The third one, named bglG, was also characterized and used for various investigations. The current work undertakes the plausible role played by some cultural conditions and physico-chemical properties to improve bglG time course synthesis and also its catalytic efficiency. Indeed, bglG time course synthesis is slightly affected by light, but it is clearly affected by aeration and presence of baffle. On the same case, optimization of substrate and enzyme concentration contributes to the improvement of the catalytic efficiency of bglG. This biocatalyst tolerates a high ionic strength during its activity assay; β-mercaptoethanol increases the enzymatic rate. BglG has the capacity to hydrolyse efficiently oleuropéin, with a recovery of 88 %.

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Antioxidant activity of phenolic fractions in olive mill wastewater

Cited by 59 publications

References 32 publications

¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Mastery of Cultural Conditions and Physico-chemical Properties Improves the Production and the Catalytic Efficiency of bglG

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Antioxidant activity of phenolic fractions in olive mill wastewater

Cited by 59 publications

References 32 publications

1H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

1H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Mastery of Cultural Conditions and Physico-chemical Properties Improves the Production and the Catalytic Efficiency of bglG

Contact Info

Product

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About

¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets

¹H-NMR metabolomic profiling of the crayfishAstacus leptodactylussubjected to polyphenol-enriched diets