Antioxidant activity of polar extracts from olive oil and olive mill wastewaters: an EPR and photometric study

2005 ◽  
Vol 107 (7-8) ◽  
pp. 513-520 ◽  
Author(s):  
Vassiliki Papadimitriou ◽  
George A. Maridakis ◽  
Theodore G. Sotiroudis ◽  
Aristotelis Xenakis
Keyword(s):  
Antioxidant Activity ◽  
Olive Oil ◽  
Photometric Study ◽  
Olive Mill Wastewaters ◽  
Polar Extracts ◽  
Olive Mill

scholarly journals Antioxidant Properties of Olive Mill Wastewater Polyphenolic Extracts on Human Endothelial and Vascular Smooth Muscle Cells

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 800
Author(s):  
Anna Maria Posadino ◽  
Annalisa Cossu ◽  
Roberta Giordo ◽  
Amalia Piscopo ◽  
Wael M Abdel-Rahman ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Cell Death ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Olive Oil ◽  
Vascular Smooth Muscle Cells ◽  
Muscle Cells ◽  
Olive Mill Wastewater ◽  
Olive Mill

This work aims to analyze the chemical and biological evaluation of two extracts obtained by olive mill wastewater (OMW), an olive oil processing byproduct. The exploitation of OMW is becoming an important aspect of development of the sustainable olive oil industry. Here we chemically and biologically evaluated one liquid (L) and one solid (S) extract obtained by liquid–liquid extraction followed by acidic hydrolysis (LLAC). Chemical characterization of the two extracts indicated that S has higher phenol content than L. Hydroxytyrosol and tyrosol were the more abundant phenols in both OMW extracts, with hydroxytyrosol significantly higher in S as compared to L. Both extracts failed to induce cell death when challenged with endothelial cells and vascular smooth muscle cells in cell viability experiments. On the contrary, the higher extract dosages employed significantly affected cell metabolic activity, as indicated by the MTT tests. Their ability to counteract H2O2-induced oxidative stress and cell death was assessed to investigate potential antioxidant activities of the extracts. Fluorescence measurements obtained with the reactive oxygen species (ROS) probe H2DCF-DA indicated strong antioxidant activity of the two OMW extracts in both cell models, as indicated by the inhibition of H2O2-induced ROS generation and the counteraction of the oxidative-induced cell death. Our results indicate LLAC-obtained OMW extracts as a safe and useful source of valuable compounds harboring antioxidant activity.

scholarly journals Enrichment of Phenolic Compounds from Olive Mill Wastewater and In Vitro Evaluation of Their Antimicrobial Activities

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Saleh Abu-Lafi ◽  
Mahmoud Sami Al-Natsheh ◽  
Reem Yaghmoor ◽  
Fuad Al-Rimawi
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Olive Oil ◽  
Acid Value ◽  
Antimicrobial Activities ◽  
Olive Mill Wastewater ◽  
Total Phenolic ◽  
The Stability ◽  
Olive Mill

The production of olive oil generates massive quantities of by-product called olive mill wastewater (OMWW). The uncontrolled disposal of OMWW poses serious environmental problems. The OMWW effluent is rich in several polyphenolic compounds. Liquid-liquid extraction of OMWW using ethyl acetate solvent was used to enrich phenolic compounds under investigation. Total phenolic and flavonoid content and antioxidant activity of the extract were determined. HPLC coupled to photodiode array (PDA) detector was used to analyze the main three phenolic compounds of OMWW, namely, hydroxytyrosol, tyrosol, and oleuropein. The antimicrobial activity of the extract was also investigated. Additionally, the OMWW extract was used as natural preservative and antioxidants for olive oil. Results showed that OMWW is very rich in phenolic compounds and has strong antioxidant activity. HPLC analysis showed that the extract contains mainly hydroxytyrosol and tyrosol but no oleuropein. The OMWW extract showed also positive activities as antibacterial (gram positive and gram negative) and antifungal as well as activities against yeast. The addition of OMWW extract to olive oil samples has an effect on the stability of olive oil as reflected by its acid value, peroxide value, K232 and K270, and total phenolic content.

Antioxidant Activity of Oregano, Parsley, and Olive Mill Wastewaters in Bulk Oils and Oil-in-Water Emulsions Enriched in Fish Oil

2008 ◽  
Vol 56 (16) ◽  
pp. 7151-7159 ◽  
Author(s):  
D. Jimenez-Alvarez ◽  
F. Giuffrida ◽  
P. A. Golay ◽  
C. Cotting ◽  
A. Lardeau ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Fish Oil ◽  
Oil In Water ◽  
Olive Mill Wastewaters ◽  
Olive Mill

Olive mill wastewater biological treatment by fungi biomass

2007 ◽  
Vol 55 (10) ◽  
pp. 89-97 ◽  
Author(s):  
S. Caffaz ◽  
C. Caretti ◽  
M. Morelli ◽  
C. Lubello ◽  
E. Azzari
Keyword(s):  
Phenolic Compounds ◽  
Olive Oil ◽  
Biological Treatment ◽  
Batch Reactor ◽  
Food Industries ◽  
Olive Mill Wastewaters ◽  
Biomass Activity ◽  
The One ◽  
By Products ◽  
Olive Mill

Olive oil extraction is one of the most important traditional food industries in the Mediterranean region, especially in Italy. In addition to olive oil, this industry produces by-products, in particular olive mill wastewaters (OMWs) and olive husks, which represent a serious environmental problem. OMWs can be rarely treated in a municipal WWTP, using conventional wastewater treatments. A novel biological process has to be considered in order to treat OMWs. Literature data show that yeasts and different kinds of fungi are able to reduce both the organic and the phenolic content of the OMW. The present work is aimed at investigating the growth of a biomass rich in fungi in a batch reactor filled with OMW and its capacity to degrade the organic and phenolic load. The aerobic OMW degradation obtained using this biomass reached a COD and TP removal efficiency of 86 and 70%, respectively. Respirometric tests have been carried out in order to measure the biomass activity on different substrates: OMW and phenolic compounds (gallic and p-coumaric acids). The polyphenolic biodegradation efficiency of fungi biomass was higher than the one of a non-acclimated activated sludge biomass. Fungi biomass was able to completely degrade pure phenolic compounds.

scholarly journals Fundamentals and Technoeconomical Analysis of Exploitation of Olive Mill Wastewater to Highadded Vale By-Products

2017 ◽  
pp. 216-223
Author(s):  
C.A. Paraskeva ◽  
E. C. Arvaniti ◽  
V.G. Papadakis
Keyword(s):  
Olive Oil ◽  
Membrane Filtration ◽  
Nutritive Value ◽  
Pure Water ◽  
Polyphenol Content ◽  
Mediterranean Countries ◽  
Olive Mill Wastewaters ◽  
Short Period ◽  
Western Greece ◽  
Olive Mill

The olive oil industry is very important in many Mediterranean countries, both in terms of wealth and tradition. The extraction of olive oil generates huge quantities of high organic wastewaters with toxic constituents that may have a great impact on land and water environments. Series of laboratory experiments, based on the technology of membrane filtration (Ultrafiltration and Nanofiltration and/or Reverse Osmosis), have been carried out for the fractionation of olive mill wastewaters into fractions with nutritive value, phytotoxic action and pure water. Based on these results, a pilot plant of membranes installed in an olive oil mill enterprise for an entire harvesting period and appropriate experiments were performed. The study showed that a fraction of pure water up to 75% can recovered and fractions that contained concentrate nutritious and polyphenol content can be isolated and further exploited in order to reduce the, indeed, high cost of the suggested treatment process. In this study, a techno-economic analysis for the implementation of the suggested method for the Region of Western Greece is presented. The present study took into account the fixed and the operational costs of the equipment, the costs for the infrastructure and land, the costs for the maintenance, etc., considering the treatment of 50,000 tones per harvesting period in the Region of Western Greece. The study showed that the establishment of one central treatment manufacture could reduce the uncontrolled disposal of OMW and their final discharging in the aqueous receptors. The exploitation of the nutritious content of the fractions as manure in fertilizers together with the polyphenol content that can be used as components of ecological herbicides can depreciate the total cost in a very short period of 1.5 years.

Antioxidant and Biological Activities of Hydroxytyrosol and Homovanillic Alcohol Obtained from Olive Mill Wastewaters of Extra-Virgin Olive Oil Production

2020 ◽  
Vol 68 (52) ◽  
pp. 15428-15439
Author(s):  
Alessandra Ricelli ◽  
Fabio Gionfra ◽  
Zulema Percario ◽  
Martina De Angelis ◽  
Ludovica Primitivo ◽  
...  
Keyword(s):  
Olive Oil ◽  
Biological Activities ◽  
Virgin Olive Oil ◽  
Oil Production ◽  
Extra Virgin Olive Oil ◽  
Olive Mill Wastewaters ◽  
Olive Mill

Isolation of a hydroxytyrosol lactone conjugate from olive mill waste water with antioxidant activity

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
K Vougogiannopoulou ◽  
H Pratsinis ◽  
R Grougnet ◽  
M Halabalaki ◽  
D Kletsas ◽  
...  
Keyword(s):  
Waste Water ◽  
Antioxidant Activity ◽  
Olive Mill Waste ◽  
Olive Mill Waste Water ◽  
Mill Waste ◽  
Olive Mill
Sign in / Sign up

Export Citation Format

Share Document