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The Use of Modified Fe 3O 4 Particles to Recover Polyphenolic Compounds for the Valorisation of Olive Mill Wastewater from Slovenian Istria. NANOMATERIALS 2022; 12:nano12142327. [PMID: 35889552 PMCID: PMC9321798 DOI: 10.3390/nano12142327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 02/04/2023]
Abstract
Olive mill waste water (OMWW), a by-product created during the processing of olive oil, contains high amounts of polyphenolic compounds. If put to further use, these polyphenolic compounds could be a valuable resource for the speciality chemical industry. In order to achieve this, isolation of the polyphenolic compounds from OMWW is needed. Several techniques for this process already exist, the most widely used of which is adsorption beds. This research describes new ways of collecting polyphenolic compounds by using unmodified iron oxide (Fe3O4) particles and Fe3O4 modified with silica gel (Fe3O4@C18), citric acid (Fe3O4@CA), and sodium dodecyl sulphate (Fe3O4@SDS). This approach is superior to adsorption beds since it can be used in a continuous system without clogging, while the nano-sized shapes create a high surface area for adsorption. The results of this study show that, if used in a loop system of several adsorption and desorption cycles, (un)modified Fe3O4 has the potential to collect high concentrations of polyphenolic compounds. A combination of different modifications of the Fe3O4 particles is also beneficial, as these combinations can be tailored to allow for the removal of specific polyphenolic compounds.
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2
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Peeters K, Miklavčič Višnjevec A, Esakkimuthu ES, Schwarzkopf M, Tavzes Č. The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe 3O 4 Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector. Molecules 2021; 26:6946. [PMID: 34834035 PMCID: PMC8622678 DOI: 10.3390/molecules26226946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 11/16/2022] Open
Abstract
Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated.
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Affiliation(s)
- Kelly Peeters
- InnoRenew CoE, Livade 6, 6310 Izola, Slovenia; (E.S.E.); (M.S.); (Č.T.)
- Andrej Marušič Institute, University of Primorska, Muzejski trg 2, 6000 Koper, Slovenia
| | - Ana Miklavčič Višnjevec
- Faculty of Mathematics, University of Primorska, Natural Sciences and Information Technologies, Glagoljaška 8, 6000 Koper, Slovenia;
| | | | - Matthew Schwarzkopf
- InnoRenew CoE, Livade 6, 6310 Izola, Slovenia; (E.S.E.); (M.S.); (Č.T.)
- Andrej Marušič Institute, University of Primorska, Muzejski trg 2, 6000 Koper, Slovenia
| | - Črtomir Tavzes
- InnoRenew CoE, Livade 6, 6310 Izola, Slovenia; (E.S.E.); (M.S.); (Č.T.)
- Andrej Marušič Institute, University of Primorska, Muzejski trg 2, 6000 Koper, Slovenia
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3
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Carrara M, Kelly MT, Roso F, Larroque M, Margout D. Potential of Olive Oil Mill Wastewater as a Source of Polyphenols for the Treatment of Skin Disorders: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7268-7284. [PMID: 34180235 DOI: 10.1021/acs.jafc.1c00296] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Current trends toward naturally occurring compounds of therapeutic interest have contributed to an increasing number of studies on olive oil phenolics in the treatment of diseases with oxidative and inflammatory origins. Recent focus has been on olive oil wastewater, which is richer in phenolic compounds than olive oil itself. In this review, we present findings demonstrating the potential use of olive mill wastewater in dermatology. Particular attention is given to compounds with proven benefits in topical pharmacology: caffeic and ferulic acids, tyrosol and hydroxytyrosol, verbascoside, and oleuropein. The review is divided into different sections: inflammatory skin diseases, microbial effects, wound healing in addition to the antimelanoma properties of olive mill waste phenolics, and their potential in sun protection agents. There is strong evidence to support further studies into the valorization of this abundant and sustainable source of phenolic compounds for use in dermatology and dermo-cosmetic preparations.
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Affiliation(s)
- Morgane Carrara
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, 34090 Montpellier, France
| | - Mary T Kelly
- Faculté de Pharmacie, Université Montpellier, 15 Avenue Charles Flahault, 34093 Montpellier, France
| | - Florence Roso
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, 34090 Montpellier, France
| | - Michel Larroque
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, 34090 Montpellier, France
| | - Delphine Margout
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, 34090 Montpellier, France
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4
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Ren J, Zhen Y, Wang J, Li J. Catalytic degradation of caffeic acid by DBD plasma and Mn doped cobalt oxyhydroxide catalyst. CHEMOSPHERE 2021; 275:130101. [PMID: 33984910 DOI: 10.1016/j.chemosphere.2021.130101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
In this study, caffeic acid (CA) was degraded by electrical discharge plasma combined with Mn doped CoOOH catalyst. Doping of Mn significantly improve the catalytic activity of CoOOH. CA degradation efficiency was 75.6% with dielectric barrier discharge treatment for 10 min, and it reached 97% using CoOOH as the catalyst at the same treatment time. CA was 100% degraded with only 8 min using Mn/CoOOH as the catalyst. The introduction of Mn into the lattice of CoOOH induced the formation of oxygen vacancy, causing part of coordinate number of Co decreased from 6 to 5, and thus produces unsaturated Co to be the Lewis acid sites. Lewis acid sites (unsaturated Co) could coordinate with O3 and H2O2 and break their chemical bonds to form O and -OH. Assisting in the conversion of O3 to ·OH was the main role of H2O2 in the catalytic process. The degradation products and pathway of CA were studied by three-dimensional fluorescence, liquid chromatograph-mass spectrometer and density functional theory calculations.
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Affiliation(s)
- Jingyu Ren
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China.
| | - Yanzhong Zhen
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jian Wang
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jie Li
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China
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Gluten-Free Breadsticks Fortified with Phenolic-Rich Extracts from Olive Leaves and Olive Mill Wastewater. Foods 2021; 10:foods10050923. [PMID: 33922194 PMCID: PMC8146876 DOI: 10.3390/foods10050923] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022] Open
Abstract
Nowadays, food processing by-products, which have long raised serious environmental concerns, are recognized to be a cheap source of valuable compounds. In the present study, incorporation of phenolic-rich extracts (500 and 1000 mg kg−1) from olive leaves (OL) and olive mill wastewater (OMW) into conventional gluten-free formulations has been exploited as a potential strategy for developing nutritious and healthy breadsticks with extended shelf-life. To this end, moisture, water activity (aw), visual and textural properties, the composition of biologically active compounds (soluble, insoluble, and bio-accessible polyphenols), antioxidant activity, oxidation stability, and consumer preference of the resulting breadsticks were investigated. Fortified breadsticks had higher moisture and aw, lower hardness, and similar color in comparison to the control, especially in the case of OL extract supplementation. All enriched formulations significantly affected the phenolic composition, as evidenced by the decrease in insoluble/soluble polyphenols ratio (from 7 in the control up to 3.1 and 4.5 in OL and OMW, respectively), and a concomitant increase in polyphenol bio-accessibility (OL: 14.5–23% and OMW: 10.4–15% rise) and antioxidant activity (OL: 20–36% and OMW: 11–16% rise). Moreover, a significant shelf-life extension was observed in all fortified breadsticks (especially in case of OMW supplementation). Sensory evaluation evidenced that 61% of the assessors showed a marked, but not significant, tendency to consider the sample supplemented with high levels of OL as a more palatable choice.
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Hemida H, Doukani K, Zitouni A, Miloud B, Beggar H, Bouhenni H. Assessment of wound healing activity of ethanolic extracts of Pistacia lentiscus L. leaves and Quercus ilex L. bark in full thickness skin excision in rats. ADVANCES IN TRADITIONAL MEDICINE 2021. [DOI: 10.1007/s13596-021-00557-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ren J, Li J, Lv L, Wang J. Degradation of caffeic acid by dielectric barrier discharge plasma combined with Ce doped CoOOH catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123772. [PMID: 33254783 DOI: 10.1016/j.jhazmat.2020.123772] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, Ce doped CoOOH was used as the catalyst for caffeic acid (CA) degradation by dielectric barrier discharge (DBD) plasma. The treatment performance and catalytic mechanism were studied by a series of experiments and density functional theory (DFT) simulations. The results show that the doping amounts of Ce significantly influenced the catalytic performance of CoOOH in DBD plasma, and the catalytic effect reached maximum when the molar ratio of Ce to Co was 1:9. CA was 100 % degraded by Ce1/Co9OOH/DBD with 10 min treatment, while only 75.6 % of CA was degraded by 10 min DBD treatment. Transformation of O3 and H2O2 to ⋅OH was mainly responsible for the catalytic effect. The content of oxygen vacancies and unsaturated Co (Lewis acid sites) of CoOOH was increased by doping Ce according to the results of experiments and simulations, and the change was conducive to the catalytic reactions. DFT simulations also indicated that DBD generated O3 and H2O2 were decomposed to O atoms, OH groups and free OH by Ce/CoOOH. The presence of reductive species in DBD plasma was confirmed, and ⋅H was a kind of important reactive specie for CA degradation. CA degradation pathway was proposed based on the detected degradation products.
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Affiliation(s)
- Jingyu Ren
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China.
| | - Jie Li
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Lei Lv
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jian Wang
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
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8
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Antioxidant Efficacy of Olive By-Product Extracts in Human Colon HCT8 Cells. Foods 2020; 10:foods10010011. [PMID: 33374501 PMCID: PMC7822158 DOI: 10.3390/foods10010011] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 12/11/2022] Open
Abstract
The production of olive oil is accompanied by the generation of a huge amount of waste and by-products including olive leaves, pomace, and wastewater. The latter represents a relevant environmental issue because they contain certain phytotoxic compounds that may need specific treatments before the expensive disposal. Therefore, reducing waste biomass and valorizing by-products would make olive oil production more sustainable. Here, we explore the biological actions of extracts deriving from olive by-products including olive pomace (OP), olive wastewater (OWW), and olive leaf (OLs) in human colorectal carcinoma HCT8 cells. Interestingly, with the same phenolic concentration, the extract obtained from the OWW showed higher antioxidant ability compared with the extracts derived from OP and OLs. These biological effects may be related to the differential phenolic composition of the extracts, as OWW extract contains the highest amount of hydroxytyrosol and tyrosol that are potent antioxidant compounds. Furthermore, OP extract that contains a higher level of vanillic acid than the other extracts displayed a cytotoxic action at the highest concentration. Together these findings revealed that phenols in the by-product extracts may interfere with signaling molecules that cross-link several intracellular pathways, raising the possibility to use them for beneficial health effects.
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9
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Industrial-Scale Study of the Chemical Composition of Olive Oil Process-Derived Matrices. Processes (Basel) 2020. [DOI: 10.3390/pr8060701] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The effect of the industrial process and collecting period on produced olive oil and by-products was evaluated. Obtained results showed significant variations for the majority of quality indices before and after vertical centrifugation between all samples from the three collecting periods. All samples were rich in monounsaturated fatty acid: Oleic acid (C18:1) with a maximum of 69.95%. The total polyphenols and individual phenolic compounds varied significantly through the extraction process, with a significant variation between olive oil and by-products. Notably, the percentage of secoiridoids and their derivatives was significant in paste and olive oil, highlighting the activity of many enzymes released during the different extraction steps. Regarding antioxidant capacity, the most remarkable result was detected in olive oil and olive mill wastewater samples.
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10
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Evci E, Yılmaz Ö, Bekfelavi EY, Şimşek Kuş N. Degradation of olive mill wastewater by different methods and antioxidant activity of olive mill wastewater extraction. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1210-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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11
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Antioxidant and Antimicrobial Activity of Rosemary, Pomegranate and Olive Extracts in Fish Patties. Antioxidants (Basel) 2019; 8:antiox8040086. [PMID: 30987153 PMCID: PMC6523725 DOI: 10.3390/antiox8040086] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 03/19/2019] [Accepted: 03/28/2019] [Indexed: 11/16/2022] Open
Abstract
Natural extracts (rich in bioactive compounds) that can be obtained from the leaves, peels and seeds, such as the studied extracts of Pomegranate (P), Rosemary (RA, Nutrox OS (NOS) and Nutrox OVS (NOVS)), and olive (Olea europaea) extracts rich in hydroxytyrosol (HYT-F from olive fruit and HYT-L from olive leaf) can act as antioxidant and antimicrobial agents in food products to replace synthetic additives. The total phenolic compounds, antioxidant capacity (measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-Azinobis (3-ethylbenzothiazolin) -6-sulphonic acid (ABTS), Ferric Reducing Antioxidant Power (FRAP), and Oxygen Radical Absorbance Capacity (ORACH)) and their antimicrobial power (using the diffusion disk method with the Escherichia Coli, Lysteria monocytogenes, and Staphilococcus Aureus strains) were measured. The results showed that all the extracts were good antioxidant and antimicrobial compounds in vitro. On the other hand, their antioxidant and antimicrobial capacity was also measured in fish products acting as preservative agents. For that, volatile fatty acid compounds were analysed by GS-MS at day 0 and 11 from elaboration, together with total vial count (TVC), total coliform count (TCC), E. Coli, and L. monocytogenes content at day 0, 4, 7 and 11 under refrigerated storage. The fish patties suffered rapid lipid oxidation and odour and flavour spoilage associated with slight rancidity. Natural extracts from pomegranate, rosemary, and hydroxytyrosol delayed the lipid oxidation, measured as volatile compounds, and the microbiological spoilage in fish patties. Addition of natural extracts to fish products contributed to extend the shelf life of fish under retail display conditions.
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12
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Özbek HN, Yanık DK, Fadıloğlu S, Göğüş F. Optimization of microwave-assisted extraction of bioactive compounds from pistachio ( Pistacia vera L.) hull. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1577444] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hatice Neval Özbek
- Department of Food Engineering, Faculty of Engineering, University of Gaziantep, Gaziantep, Turkey
| | - Derya Koçak Yanık
- Department of Food Engineering, Faculty of Engineering, University of Gaziantep, Gaziantep, Turkey
| | - Sibel Fadıloğlu
- Department of Food Engineering, Faculty of Engineering, University of Gaziantep, Gaziantep, Turkey
| | - Fahrettin Göğüş
- Department of Food Engineering, Faculty of Engineering, University of Gaziantep, Gaziantep, Turkey
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13
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Tarchoune I, Sgherri C, Eddouzi J, Zinnai A, Quartacci MF, Zarrouk M. Olive Leaf Addition Increases Olive Oil Nutraceutical Properties. Molecules 2019; 24:molecules24030545. [PMID: 30717325 PMCID: PMC6384668 DOI: 10.3390/molecules24030545] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 01/18/2023] Open
Abstract
The aim of the present research was to study the effects of olive leaf addition (0 and 3%) on the major antioxidants and the antioxidant activity of Neb Jmel and Oueslati olive oils. Olives and leaves of the two Tunisian varieties were harvested during the 2016/2017 crop season. Both leaves and oils were characterised for their concentrations in phenolics, tocopherols and antioxidant power. Other parameters such as free acidity, peroxide value, chlorophyll and carotenoid concentrations were also taken into consideration. Compared to Oueslati, the Neb Jmel oil showed a lower free acidity (50%) and peroxide value (5.6-fold), and higher chlorophyll (1.6-fold), total phenolics (1.3-fold), flavonoid (3-fold) and oleuropein derivative (1.5-fold) concentrations, in addition to an increased antioxidant activity (1.6-fold). Leaf addition promoted a significant increment in total chlorophyll, α-tocopherol and phenolics in both varieties, above all in Oueslati oil, due to a higher abundance of bioactive constituents in the corresponding leaves. In particular, chlorophyll and carotenoid concentrations reached values twice higher than in Neb Jmel leaves, and flavonoids and oleouperin derivatives were three-fold higher. This prevented the oxidation and the formation of peroxides, reducing the peroxide value of the fortified oil to the half. The results provide evidence on the performance of the Tunisian Neb Jmel and Oueslati varieties, showing that their oils present a chemical profile corresponding to the extra virgin olive oil category and that, after leaf addition, their nutritional value was improved.
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Affiliation(s)
- Imen Tarchoune
- Laboratoire de Biotechnologie d'Olivier, Centre de Biotechnologie de Borj-Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
| | - Cristina Sgherri
- Department of Agriculture, Food and Environment (DAFE), Via del Borghetto 80, 56124 Pisa, Italy.
| | - Jamel Eddouzi
- Laboratoire de Biotechnologie Appliquée à l'Agriculture, INRA Tunis, Université de Carthage, El Menzah, 1004 Tunis, Tunisia.
| | - Angela Zinnai
- Department of Agriculture, Food and Environment (DAFE), Via del Borghetto 80, 56124 Pisa, Italy.
- Interdepartmental Research Centre "Nutraceuticals and Food for Health", University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy.
| | - Mike Frank Quartacci
- Department of Agriculture, Food and Environment (DAFE), Via del Borghetto 80, 56124 Pisa, Italy.
- Interdepartmental Research Centre "Nutraceuticals and Food for Health", University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy.
| | - Mokhtar Zarrouk
- Laboratoire de Biotechnologie d'Olivier, Centre de Biotechnologie de Borj-Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
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Julio R, Zambra C, Merlet G, Cabezas R, Correa G, Salinas G, González J, Veliz F, Lemus-Mondaca R. Liquid–liquid extraction of hydroxytyrosol, tyrosol, and oleuropein using ionic liquids. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1555171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Romero Julio
- Laboratory of Membrane Separation Process (LabProSeM), Department of Chemical Engineering, University of Santiago de Chile, Santiago, Chile
| | - Carlos Zambra
- Department of Mechanical Engineering, University of Talca, Curicó, Chile
| | - Gastón Merlet
- Laboratory of Membrane Separation Process (LabProSeM), Department of Chemical Engineering, University of Santiago de Chile, Santiago, Chile
| | - Rene Cabezas
- Laboratory of Membrane Separation Process (LabProSeM), Department of Chemical Engineering, University of Santiago de Chile, Santiago, Chile
| | - Gonzalo Correa
- Laboratory of Membrane Separation Process (LabProSeM), Department of Chemical Engineering, University of Santiago de Chile, Santiago, Chile
| | - Gonzalo Salinas
- Department of Mechanical Engineering, University of Talca, Curicó, Chile
| | - Johan González
- Department of Mechanical Engineering, University of Talca, Curicó, Chile
| | - Felipe Veliz
- Department of Mechanical Engineering, University of Talca, Curicó, Chile
| | - Roberto Lemus-Mondaca
- Departamento de Ciencia de los Alimentos y Tecnología Química, Universidad de Chile, Santiago, Chile
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15
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Míguez N, Ramírez‐Escudero M, Gimeno‐Pérez M, Poveda A, Jiménez‐Barbero J, Ballesteros AO, Fernández‐Lobato M, Sanz‐Aparicio J, Plou FJ. Fructosylation of Hydroxytyrosol by the β‐Fructofuranosidase from
Xanthophyllomyces dendrorhous
: Insights into the Molecular Basis of the Enzyme Specificity. ChemCatChem 2018. [DOI: 10.1002/cctc.201801171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Noa Míguez
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
| | - Mercedes Ramírez‐Escudero
- Macromolecular Crystallography and Structural Biology Department Institute of Physical-Chemistry Rocasolano (CSIC) Madrid 28006 Spain
| | - María Gimeno‐Pérez
- Molecular Biology Department Centre of Molecular Biology Severo Ochoa (CSIC-UAM)Autonomous University of Madrid Madrid 28049 Spain
| | - Ana Poveda
- CIC bioGUNE: Center for Cooperative Research in Biosciences Basque Network of Science Technology and InnovationBiscay Science and Technology Park Derio 48160 Spain
| | - Jesús Jiménez‐Barbero
- CIC bioGUNE: Center for Cooperative Research in Biosciences Basque Network of Science Technology and InnovationBiscay Science and Technology Park Derio 48160 Spain
| | - Antonio O. Ballesteros
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
| | - María Fernández‐Lobato
- Molecular Biology Department Centre of Molecular Biology Severo Ochoa (CSIC-UAM)Autonomous University of Madrid Madrid 28049 Spain
| | - Julia Sanz‐Aparicio
- Macromolecular Crystallography and Structural Biology Department Institute of Physical-Chemistry Rocasolano (CSIC) Madrid 28006 Spain
| | - Francisco J. Plou
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
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16
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Günal D, Turan S. Effects of olive wastewater and pomace extracts, lecithin, and ascorbyl palmitate on the oxidative stability of refined sunflower oil. J FOOD PROCESS PRES 2018. [DOI: 10.1111/jfpp.13705] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deniz Günal
- Faculty of Engineering and Architecture, Department of Food Engineering; Abant Izzet Baysal University; Bolu Turkey
| | - Semra Turan
- Faculty of Engineering and Architecture, Department of Food Engineering; Abant Izzet Baysal University; Bolu Turkey
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17
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Cimmino R, Barone CMA, Claps S, Varricchio E, Rufrano D, Caroprese M, Albenzio M, De Palo P, Campanile G, Neglia G. Effects of dietary supplementation with polyphenols on meat quality in Saanen goat kids. BMC Vet Res 2018; 14:181. [PMID: 29890971 PMCID: PMC5996534 DOI: 10.1186/s12917-018-1513-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 06/01/2018] [Indexed: 12/03/2022] Open
Abstract
Background Diet supplementation with polyphenols is a novel strategy to improve meat quality in livestock, by preventing oxidative deterioration of lipids and protein. Polyphenols have beneficial effects on both human and animal health and can be obtained from several sources, such as olive mill wastewaters (OMWW). These are severe environmental pollutants and therefore may be recycled and utilized in other sectors. The aim of this study was to evaluate growth performance, meat characteristics, fatty acid composition, antioxidant status, different forms of myoglobin and malondialdehyde formation in kids who received a diet supplemented with polyphenols obtained from OMWW. Weaned goat kids (n = 18) were divided into two homogenous groups: control (C) group (n = 9) received a fattening standard diet while the other group (n = 9) received the same diet, supplemented with 3.2 mg/day of polyphenols powder extract (PE group). Average daily gain (ADG) was calculated 10 days apart throughout the study. After 78 days, the kids were slaughtered and pH and carcass yield were evaluated. Longissimus thoracis et lumborum muscle was collected and utilized for chemical analysis, meat quality evaluation and oxidative stability. Results No differences were recorded in ADG, carcass weight, pH and dressing between the two groups. Furthermore a similar meat proximate composition, texture and color was observed. Dietary polyphenols supplementation significantly (P < 0.01) decreased short chains (<C12:0) (2.93 + 0.50 and 0.35 + 0.40 g/100 g of fatty acids, for C and PE Group, respectively), and saturated (49.22 ± 2.39 and 39.51 ± 1.95 g/100 g, in C and PE Group, respectively) fatty acids. Furthermore, a higher (P < 0.05) proportion of monounsaturated (34.35 ± 2.84 and 42.22 ± 2.32 g/100 g, in C and PE Group, respectively) fatty acids was recorded. Malondialdehyde formation was significantly (P < 0.05) lower in PE compared to C Group (0.25 ± 0.005 and 0.15 ± 0.005, in C and PE Group, respectively). Conclusions Polyphenols dietary supplementation has positive effects on kid meat, improving fatty acid profile and reducing malondialdehyde contents. Furthermore the utilization of OMWW as the source of polyphenols may represent an innovative strategy to re-utilize agri-food industry wastes.
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Affiliation(s)
- Roberta Cimmino
- Italian Buffalo Breeders Association, V. Petrarca 42/44, 81100, Caserta, Italy.
| | - Carmela M A Barone
- Department of AgriculturalSciences, Federico II University, Via Università 133, 80055, Portici, Naples, Italy
| | - Salvatore Claps
- Research Centre for Animal Production and Aquaculture (CREA, S.S. 7 Appia, 85051, Bella Muro, PZ, Italy
| | - Ettore Varricchio
- Department of Sciences and Technologies, University of Sannio, V. Port'Arsa 11, 82100, Benevento, Italy
| | - Domenico Rufrano
- Research Centre for Animal Production and Aquaculture (CREA, S.S. 7 Appia, 85051, Bella Muro, PZ, Italy
| | - Mariangela Caroprese
- Department of Agricultural Food and Environmental Sciences, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Marzia Albenzio
- Department of Agricultural Food and Environmental Sciences, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Pasquale De Palo
- Department of Veterinary Medicine, University "Aldo Moro" of Bari, S.P. per Casamassima, km 3, Valenzano, 70010, Bari, Italy
| | - Giuseppe Campanile
- Department of Veterinary Medicine and Animal Production, Federico II University, V. F. Delpino 1, 80137, Naples, Italy
| | - Gianluca Neglia
- Department of Veterinary Medicine and Animal Production, Federico II University, V. F. Delpino 1, 80137, Naples, Italy
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Towards a high yield recovery of polyphenols from olive mill wastewater on activated carbon coated with milk proteins: Experimental design and antioxidant activity. Food Chem 2018; 262:102-109. [PMID: 29751896 DOI: 10.1016/j.foodchem.2018.04.091] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 03/26/2018] [Accepted: 04/22/2018] [Indexed: 11/21/2022]
Abstract
Activated carbon coated with milk proteins was used for the removal and recovery of phenolic compounds from actual olive mill wastewater (OMW). The extraction of polyphenols using the new adsorbent based on natural coating agent has significant potential compared with traditional extraction methods, as it significantly increases the extraction yield (80%) and overall efficiencies of the process for total phenols (75.4%) and hydroxytyrosol (90.6%) which is the most valuable compound. Complete discussions on the adsorption isotherms, kinetic and thermodynamic were performed and the optimum adsorption variables were investigated using the response surface methodology and the central composite experimental design. The extracted polyphenols exhibited a high antioxidant activity and a fast scavenging effect on DPPH free radical. The strategy devised in this work for polyphenol extraction using modified activated carbon with biological coating agent is of simple design, very effective and ensure the recovery of highly antioxidant extract.
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19
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Recovery of phenolic compounds from wastewaters through micellar enhanced ultrafiltration. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.07.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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20
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Aggoun M, Arhab R, Cornu A, Portelli J, Barkat M, Graulet B. Olive mill wastewater microconstituents composition according to olive variety and extraction process. Food Chem 2016; 209:72-80. [PMID: 27173536 DOI: 10.1016/j.foodchem.2016.04.034] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 04/07/2016] [Accepted: 04/12/2016] [Indexed: 11/15/2022]
Abstract
Olive oil production yields a considerable amount of wastewater, a powerful pollutant that is currently discarded but could be considered as a potential source of valuable natural products due to its content in phenolic compounds and other natural antioxidants. The aim of this work was to explore the variability in olive mill wastewater composition from Algerian olive oil mills considering extraction processes (traditional discontinuous press vs 3-phases centrifugal system) and olive varieties (Azerraj, Sigoise, Chemlal). Whereas pH, dry or organic matter content didn't vary, there was a significant difference in ash content according to extraction process and olive variety. Carotenoid content was 2.2-fold higher with 3-phases than with press systems whereas tocopherol content was not significantly different. Among the phenolic compounds quantified, tyrosol was usually the most abundant whereas oleuropein concentrations were highly variable. Differences in phenolic compound concentrations were more pronounced between olive varieties than between processes.
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Affiliation(s)
- Moufida Aggoun
- INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France
| | - Rabah Arhab
- Département des Sciences de la Nature et de la Vie, Université Larbi Ben M'Hidi, Oum El Bouaghi, Algeria
| | - Agnès Cornu
- INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France
| | - Josiane Portelli
- INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France
| | - Malika Barkat
- Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires, INATAA, Université Frères Mentouri-Constantine, route de Ain El Bey, 25000 Constantine, Algeria
| | - Benoît Graulet
- INRA, UMR1213 Herbivores, F-63122 St-Genès-Champanelle, France; Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France.
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Ellouze S, Panizza M, Barbucci A, Cerisola G, Mhiri T, Elaoud SC. Ferulic acid treatment by electrochemical oxidation using a BDD anode. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Azaizeh H, Kurzbaum E, Said O, Jaradat H, Menashe O. The potential of autochthonous microbial culture encapsulation in a confined environment for phenol biodegradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:15179-15187. [PMID: 26250809 DOI: 10.1007/s11356-015-4981-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Abstract
Olive mill wastewater (OMWW) is claimed to be one of the most polluting effluents produced by agro-food industries, providing high contaminants load that encase cytotoxic agents such as phenolic and polyphenolic compounds. Therefore, a significant and continuous stress episode is induced once the mixed liquor of the wastewater treatment plants (WWTP's) is being exposed to OMWW. The use of bio-augmentation treatment procedures can be useful to eliminate or reduce such stress episodes. In this study, we have estimated the use of autochthonous biomass implementation within small bioreactor platform (SBP) particles as a bio-augmentation method to challenge against WWTPs stress episodes. Our results showed that SBP particles significantly reduced the presence of various phenolics: tannic, gallic and caffeic acid in a synthetic medium and in crude OMWW matrix. Moreover, the SBP particles succeeded to biodegrade a very high concentration of phenol blend (3000 mg L(-1)). Our findings indicated that the presence of the SBP microfiltration membrane has reduced the phenol biodegradation rate by 50 % compared to the same suspended culture. Despite the observed reduction in biodegradation rate, encapsulation in a confined environment can offer significant values such as overcoming the grazing forcers and dilution, thus achieving a long-term sufficient biomass. The potential for reducing stress episodes caused by cytotoxic agents through bio-augmentation treatment procedure using the SBP technology is discussed.
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Affiliation(s)
- Hassan Azaizeh
- The Galilee Society, Institute of Applied Research (Affiliated with University of Haifa), P.O. Box 437, Shefa Amr, 20200, Israel
- Tel Hai College, Tel Hai, Upper Galilee, 12208, Israel
| | - Eyal Kurzbaum
- Golan Research Institute, University of Haifa, P.O.B 97, Qatzrin, Israel
| | - Ons Said
- The Galilee Society, Institute of Applied Research (Affiliated with University of Haifa), P.O. Box 437, Shefa Amr, 20200, Israel
| | - Husain Jaradat
- The Galilee Society, Institute of Applied Research (Affiliated with University of Haifa), P.O. Box 437, Shefa Amr, 20200, Israel
| | - Ofir Menashe
- Water Industries Engineering Department, Achi Racov Engineering School, Kinneret College on the Sea of Galilee, D.N. Emek Ha'Yarden, 15132, Israel.
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23
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De La Cruz JP, Ruiz-Moreno MI, Guerrero A, Reyes JJ, Benitez-Guerrero A, Espartero JL, González-Correa JA. Differences in the Neuroprotective Effect of Orally Administered Virgin Olive Oil (Olea europaea) Polyphenols Tyrosol and Hydroxytyrosol in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5957-5963. [PMID: 26066316 DOI: 10.1021/acs.jafc.5b00627] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The neuroprotective effect of virgin olive oil (VOO) polyphenols has been related to their antioxidant effect. The main objective was to analyze how tyrosol and hydroxytyrosol contribute to the antioxidant and neuroprotective effects of VOO in a model of hypoxia-reoxygenation in rat brain slices. Rats were treated per os (po) (10 or 20 mg/kg/day) with hydroxytyrosol ethyl ether (HTEE), tyrosol ethyl ether (TEE), or 3,4-di-o-methylidene-hydroxytyrosol ethyl ether (MHTEE), used as a negative control for antioxidant effects. Lipid peroxidation was inhibited with HTEE, TEE, and MHTEE (from 5.0 ± 1.5 to 2.6 ± 1.5, 4.5 ± 1.5, and 4.8 ± 1.5 nmol/mg protein, respectively). However, all three compounds had similar neuroprotective effects: from 2.8 ± 0.07 to 1.8 ± 0.02 arbitrary units for HTEE, 1.4 ± 0.09 arbitrary units for TEE, and 1.3 ± 0.2 arbitrary units for MHTEE. All three compounds inhibited 3-nitrotyrosine production (from 3.7 ± 0.3 to 1.2 ± 0.03 nmol/0.1 g tissue for HTEE, 1.0 ± 0.2 nmol/0.1 g tissue for TEE, and 1.3 ± 0.1 nmol/0.1 g tissue for MHTEE), prostaglandin E2 production (from 55.7 ± 2.2 to 46.4 ± 1.9 pg/0.1 g tissue for HTEE, 24.7 ± 1.3 pg/0.1 g tissue for TEE, and 27.6 ± 2.6 pg/0.1 g tissue for MHTEE), whereas only HTEE inhibited IL1β production (from 35.7 ± 1.5 to 21.6 ± 0.8 pg/0.1 g tissue). Pearson correlation coefficients related neuroprotective effect with an antioxidant effect for HTEE (R = 0.72, p < 0.001), and inhibition of nitrosative stress (R = 0.78, 0.67, and 0.66 for HTEE, TEE, and MHTEE, respectively, p < 0.001) and inflammatory mediators (R = 0.72, 0.79, and 0.64 for HTEE, TEE, and MHTEE, respectively, p < 0.001) with all three compounds.
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Affiliation(s)
- José Pedro De La Cruz
- †Laboratorio de Investigaciones Antitrombóticas e Isquemia Tisular (LIAIT), Department of Pharmacology and Therapeutics, School of Medicine, University of Malaga, Malaga, Spain
| | - Maria Isabel Ruiz-Moreno
- †Laboratorio de Investigaciones Antitrombóticas e Isquemia Tisular (LIAIT), Department of Pharmacology and Therapeutics, School of Medicine, University of Malaga, Malaga, Spain
| | - Ana Guerrero
- †Laboratorio de Investigaciones Antitrombóticas e Isquemia Tisular (LIAIT), Department of Pharmacology and Therapeutics, School of Medicine, University of Malaga, Malaga, Spain
| | - José Julio Reyes
- †Laboratorio de Investigaciones Antitrombóticas e Isquemia Tisular (LIAIT), Department of Pharmacology and Therapeutics, School of Medicine, University of Malaga, Malaga, Spain
| | | | - José Luis Espartero
- #Departamento de Quı́mica Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - José Antonio González-Correa
- †Laboratorio de Investigaciones Antitrombóticas e Isquemia Tisular (LIAIT), Department of Pharmacology and Therapeutics, School of Medicine, University of Malaga, Malaga, Spain
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Uribe E, Pasten A, Lemus-Mondaca R, Vega-Gálvez A, Quispe-Fuentes I, Ortiz J, Di Scala K. Comparison of Chemical Composition, Bioactive Compounds and Antioxidant Activity of Three Olive-Waste Cakes. J Food Biochem 2015. [DOI: 10.1111/jfbc.12120] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- E. Uribe
- Department of Food Engineering; Universidad de La Serena; La Serena Chile
| | - A. Pasten
- Department of Food Engineering; Universidad de La Serena; La Serena Chile
| | - R. Lemus-Mondaca
- Department of Food Engineering; Universidad de La Serena; La Serena Chile
| | - A. Vega-Gálvez
- Department of Food Engineering; Universidad de La Serena; La Serena Chile
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA); La Serena Chile
| | - I. Quispe-Fuentes
- Department of Food Engineering; Universidad de La Serena; La Serena Chile
| | - J. Ortiz
- Department of Food Science and Chemical Technology; Universidad de Chile; Santiago Chile
| | - K. Di Scala
- Food Engineering Research Group; Facultad de Ingeniería; Universidad Nacional de Mar del Plata; Av. Juan B. Justo 4302 Mar del Plata 7600 Argentina
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas); Buenos Aires Argentina
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25
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Girardi F, Cichelli A, Perri E, Basti C, d'Alessandro N. Oxidative treatments of solid olive residues: Effects on phenolic and fatty acid fractions. EUR J LIPID SCI TECH 2014. [DOI: 10.1002/ejlt.201300083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fabio Girardi
- School of Advanced Studies in Science“G. d'Annunzio” University of Chieti–PescaraPescaraItaly
| | - Angelo Cichelli
- Commodity Science Laboratory (DEC)“G. d'Annunzio” University of Chieti–PescaraPescaraItaly
| | - Enzo Perri
- Olive Growing and Olive Oil Industry Research Centre (CRA)Rende (CS)Italy
| | - Carla Basti
- Olive Growing and Olive Oil Industry Research Centre (CRA)Città Sant'Angelo (PE)Italy
| | - Nicola d'Alessandro
- Department of Engineering and Geology (INGEO)“G. d'Annunzio” University of Chieti–PescaraPescaraItaly
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Dordio A, Carvalho AJP. Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 463-464:454-461. [PMID: 23831791 DOI: 10.1016/j.scitotenv.2013.06.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/29/2013] [Accepted: 06/11/2013] [Indexed: 06/02/2023]
Abstract
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.
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Affiliation(s)
- A Dordio
- Chemistry Department, University of Évora, Rua Romão Ramalho 59, 7000-676 Évora, Portugal; IMAR - Marine and Environmental Research Centre, University of Évora, Rua Romão Ramalho 59, 7000-676 Évora, Portugal.
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Factorial design optimisation of hydrocaffeic acid removal from an aqueous matrix by the use of a crude potato polyphenol oxidase. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2013. [DOI: 10.1016/j.bcab.2013.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Saibi W, Gargouri A. Mastery of cultural conditions and physico-chemical properties improves the production and the catalytic efficiency of bglG. Appl Biochem Biotechnol 2013; 170:1525-32. [PMID: 23700144 PMCID: PMC3696177 DOI: 10.1007/s12010-013-0284-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 05/03/2013] [Indexed: 11/30/2022]
Abstract
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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Affiliation(s)
- Walid Saibi
- Plant Protection and Improvement Laboratory, Centre of Biotechnology of Sfax/University of Sfax, BP 1177, 3018 Sfax, Tunisia.
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