Identification and characterisation of phenolic compounds extracted from Moroccan olive mill wastewater

Leouifoudi, Inass; Zyad, Abdelmajid; Amechrouq, Ali; Oukerrou, Moulay Ali; Mouse, Hassan Aît; Mbarki, Mohamed

doi:10.1590/fst.2014.0051

Cited by 69 publications

(38 citation statements)

References 43 publications

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“…The absorbance was measured at 765 nm in AAS. Contents of the total phenolic compounds in OMWW were expressed as gallic acid equivalents in grams per litre (g GAE/L residue) [25]. K + and Na + concentrations were determined using a flame photometer (Corning 400).…”

Section: Characterization Of the Omwwmentioning

confidence: 99%

Activation of Jordanian Bentonite by Hydrochloric Acid and Its Potential for Olive Mill Wastewater Enhanced Treatment

Al-Essa

2018

Journal of Chemistry

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Jordanian bentonite was activated by hydrochloric acid at room temperature. FTIR, XRD, TGA, and BET surface area analyses of the samples were carried out to examine the structure of bentonite before and after acid activation. It is found that the octahedral cations were removed, which altered the chemical composition of the bentonite. Difference of surface area was noticed (66.2 to 287.8 m 2 g −1 ), which was caused by structural changes in the bentonite. We aimed to investigate the effectiveness of activated bentonite in OMWW treatment. Batch and column techniques were applied. Crude and treated OMWW samples were characterized; physiochemical parameters, total phenolic compounds, and heavy metal ions concentrations were measured. Several parameters that affected the adsorption capacity were studied: the pH value of the solution, temperature, and the adsorbent dose. It was found that the maximum removal of total phenolic compounds and heavy metal ions (Zn, Fe, and Mn) was at pH 6. Adsorption capacity of phenolic compounds was enhanced with an increase in the temperature of the solution and also with the adsorbent dose. The optimum adsorbent concentration needed for the maximum removal of total phenolic compounds is 1 g of activated bentonite/0.01 L of OMWW. The percentage removal exceeded 99% for Zn, Fe, and Mn ions, while it reached 65.2 and 61.5 for K + and Na + ions, respectively. Finally, the percentage removal of pollutants was increased by using activated bentonite. This study will provide valuable insight into the effect of activated bentonite towards the treatment and recyclability of OMWW, which is essential for the local olive mill industry.

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Section: Characterization Of the Omwwmentioning

confidence: 99%

Activation of Jordanian Bentonite by Hydrochloric Acid and Its Potential for Olive Mill Wastewater Enhanced Treatment

Al-Essa

2018

Journal of Chemistry

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“…The amount of total phenol content, in different solvent extracts of Acacia sinuata was determined by Folin-Ciocalteu's reagent method 8 , 0.5 ml of extract and 0.1 ml ( 0.5 N ) Folin-Ciocalteu's reagent was mixed and the mixture was incubated at room temperature for 15 min. Then 2.5ml saturated sodium carbonate solution was added and further incubated for 30 min at room temperature and the absorbance was measured at 760 nm.…”

Section: Determination Of Total Phenol Contentmentioning

confidence: 99%

Untitled

2016

IJPSR

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Objective:The present work is aimed to screen phytochemicals, in vitro antimicrobial and antioxidant activity of the non polar and polar extracts of Acacia sinuata. Methods: Leaves of Acacia sinuata-were collected, dried and powdered. The powdered material is subjected to soxhlet extraction using various polar to non polar solvents and allowed for evaporation. The crude extracts thus obtained were used for further screening of phytochemicals, in vitro antimicrobial activity and antioxidant activities. Results: Phytochemical evaluation of Acacia sinuata proved that most of the secondary metabolites are extracted in polar solvents than non polar solvent like hexane. All the extracts of the Acacia sinuata possess significant amount of phenols and flavonoids and they also showed antimicrobial and antioxidant activity. Out of all the extracts of Acacia sinuata, methanol extracts showed better antibacterial, antifungal activity and antioxidant activity. Conclusion: The present work concluded that the methanol extract of Acacia sinuata was useful to develop new plant based dugs against various pathogenic bacteria as well as fungal species.

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“…The HPLC system in a mobile phase consisting of distilled water (92%), acidified with 0.10 M ortho-phosphoric acid, and acetonitrile (21%), with a flow rate of 1.0 ml/min, demonstrated oleuropein in olive leaf extract at RT of 8 min 25 . Olive mill wastewater HPLC chromatograms provided the separation of the major biophenols and detected the presence of hydroxytyrosol glucoside, hydroxytyrosol and tyrosol, at RTs 3.12 -10.73 mm 17 . Kanakis et al 23 , with a flow rate of 0.4 mL/min, using the solvent system of water acidified with 0.1% acetic acid and acetonitrile, demonstrated HPLC for olive extracts displaying peaks for hydroxytyrosol (RT: 1.79), hydroxytyrosol hexoside (2 isomers; RT: 1.44 and 1.98), tyrosol hexoside (RT: 3.40), tyrosol (RT: 3.29), hydroxylated products of the decarboxyl elenolic acid (two isomers; RT: 3.77 and 4.39), hydroxylated form of elenolic acid (RT: 4.83), glucosyl-methyloleoside (RT: 6.08), and hydroxytyrosol acetate (RT: 9.51 min).…”

Section: Resultsmentioning

confidence: 99%

“…Owen et al 15 demonstrated the efficacy of olive leaves against Escherichia coli, S. aureus and B. cereus. Antimicrobial activity has also been reported in olive oil mill wastewaters 16,17 and olive leaf extracts 18,19 as well.…”

Section: Introductionmentioning

confidence: 87%

High Performance Liquid Chromatography Analysis and Anti-Methicillin Resistant Staphylococcus Aureus Activity of Olive Fruit Ethanolic Extract

Sircar¹,

Mandal²,

Mondal³

et al. 2017

Int. Res. J. Pharm.

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The current study explores the antibacterial activity and HPLC (high performance liquid chromatography) profiles of olive (Elaeocarpus floribundus) fruits. The ethanolic extract of olive fruit parts: seed (OSE) and mesocarp-epicarp (OME), were prepared, and tested for their antibacterial activity, by agar-well diffusion method using 1.875 -6.25 mg/well, against the clinical isolates of methicillin resistant Staphylococcus aureus (MRSA; n=3). The HPLC profiles of the extracts were prepared. For the test MRSA isolates, the OSE, at concentrations 1.875, 3.125 and 6.25 mg/well, had ZDI (zone diameter of inhibition) values 8  1.73 mm (range: 6 -9 mm), 9  1.73 mm (range: 7 -10 mm) and 11.67  1.53 mm (range: 10 -13 mm), respectively, and the ZDIs for OME recorded were 12.33  2.51 mm (range: 10 -15 mm), 13.66  2.08 mm (range: 12 -16 mm) and 16.33  1.53 mm (range: 15 -18 mm), respectively (when the values expressed as mean  standard deviation). The HPLC chromatograms for both OSE and OME displayed 9 major compounds with retention times 1.54 -6.14 min and 1.79 -9.47 min, respectively. Thus, the olive fruit extracts (OME and OSE) possessing various phytochemicals, showed anti-MRSA activity, suggesting the plausible usage of the extracts in the preparation of antibacterial leads in combating various life threatening diseases caused due to S. aureus infection, including MRSA.

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Identification and characterisation of phenolic compounds extracted from Moroccan olive mill wastewater

Cited by 69 publications

References 43 publications

Activation of Jordanian Bentonite by Hydrochloric Acid and Its Potential for Olive Mill Wastewater Enhanced Treatment

Activation of Jordanian Bentonite by Hydrochloric Acid and Its Potential for Olive Mill Wastewater Enhanced Treatment

Untitled

High Performance Liquid Chromatography Analysis and Anti-Methicillin Resistant Staphylococcus Aureus Activity of Olive Fruit Ethanolic Extract

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