Multistage recovery process of phenolic antioxidants with a focus on hydroxytyrosol from olive mill wastewater concentrates

Çelik, Göksu; Saygin, Ö.; Balcıoğlu, Işıl Akmehmet

doi:10.1016/j.seppur.2020.117757

Cited by 16 publications

(3 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to supervisory organs of the food industry, the identification and quantification of synthetic phenolic antioxidants in foodstuffs should be performed using previous separation by chromatographic techniques with the steps of pretreatment and cleanup of samples, which are based on liquid–liquid extraction (LLE) [ 7 , 8 , 9 ], solid-phase extraction (SPE) [ 10 , 11 , 12 , 13 ], and the combination of other extraction methods [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. However, in the last decades, some researchers have demonstrated that the use of voltammetric techniques in the identification and quantification of antioxidants in foodstuffs allows some advantages, such as low cost of instrumentation and inputs used, reduced analysis time and requirements of few and simplified sample preparation steps when compared with chromatographic analysis since voltammetric analysis can be performed in colored materials and samples with dispersed solid particles [ 21 ].…”

Section: General Considerationsmentioning

confidence: 99%

Detection of Synthetic Antioxidants: What Factors Affect the Efficiency in the Chromatographic Analysis and in the Electrochemical Analysis?

Gonçalves-Filho

Souza

2022

Molecules

View full text Add to dashboard Cite

Antioxidants are food additives largely employed to inhibit oxidative reactions in foodstuffs rich in oils and fat lipids, extending the shelf life of foodstuffs and inhibiting alterations in color, flavor, smell, and loss of nutritional value. However, various research has demonstrated that the inadequate use of synthetic antioxidants results in environmental and health problems due to the fact that some of these compounds present toxicity, and their presence in the human body, in high concentrations, is related to the development of some cancer types and other diseases. Therefore, the development of analytical methods for identifying and quantifying synthetic antioxidants in foodstuffs is fundamental to quality control and in ensuring consumer food safety. This review describes the recent chromatographic and electrochemical techniques used in the detection of synthetic phenolic antioxidants in foodstuffs, highlighting the main characteristics, advantages and disadvantages of these methods, and specific typical features, which include extraction methods for sample preparation and materials used in the working electrode construction, considering chromatographic and voltammetric methods, since these specific features influence the efficiency in the analysis.

show abstract

Section: General Considerationsmentioning

confidence: 99%

Detection of Synthetic Antioxidants: What Factors Affect the Efficiency in the Chromatographic Analysis and in the Electrochemical Analysis?

Gonçalves-Filho

Souza

2022

Molecules

View full text Add to dashboard Cite

show abstract

“…Some of the solvent extraction process steps are acidification or condensing, delipidation extraction, and purification used for phenol recovery in olive mill wastewater (Deng et al 2017;Çelik et al 2020). The acidification with acetic acid allows hydroxytyrosol enrichment (Debo et al 2011), and ultrasound-assisted extraction could increase the yield of phenolic compounds (Deng et al 2017).…”

Section: Techniques For Target Compounds Recoverymentioning

confidence: 99%

Wastewater as a resource for pest control: An overview

Bailón-Salas

Ordaz-Díaz²,

López-Serrano

et al. 2021

BioRes

View full text Add to dashboard Cite

Pests have a negative impact on the economy and the environment. There is an increased urgency for adequate pest control because many pests show high adaptation and climate change has created favorable circumstances for pests. For pest control, synthetic chemicals are used that are lethal to non-target organisms and are toxic to pollinators and aquatic invertebrates. Chemical compounds in plants and derivatives from lignocellulosic materials act against pests. The wastewater from lignocellulosic biomass is a potential source of new compounds with bactericidal, fungicidal, and pesticidal effects that have demonstrated inhibitory activity against plant pathogens. Fungicidal, nematicidal, insecticidal, larvicidal, and bactericidal activities have been proven. Inorganic and organic compounds, such as phenols, aldehydes, esters, and furanics, are the main ones identified. Due to the antimicrobial activity of wastewater, applying it to the soil can modify the composition and structure of key microbial communities. Deep research about richness, biodiversity, functionality, and microbials is needed. This review provides a comprehensive overview of wastewater types that have been applied and possible sources to obtain potential compounds for pest control. Moreover, associated active compounds, recovery techniques, and environmental impacts are reviewed.

show abstract

“…However, due to its nitrogen deficiency, extra nitrogen needs to be added to microbial production processes, which can increase production costs [5,10]. Alternatively, phenolic compounds can be extracted from OOMW using effective extraction methods [12,13]. Bioactive phenolic compounds recovered from olive wastes (e.g., OOMW, olive pomace and olive leaves) typically include hydroxytyrosol (3,4-DHPE), tyrosol (4-HPE), oleuropein (3,4-DHPE-EA-glu), quercetin-3-O-rutinoside (rutin), luteolin-7-O-glucoside, and 3,4-Dihydroxyphenylglycol (3,4-DHPG) [14].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activities of Olive Oil Mill Wastewater Extracts against Selected Microorganisms

Şar

Akbaş

2023

Sustainability

View full text Add to dashboard Cite

Discovering eco-friendly alternatives to synthetic chemicals has become an increasingly popular area of research. Natural products are now in the spotlight for their potential use as replacements for synthetic chemicals. To maximize the benefits of these natural products, it is important to use efficient extraction methods, especially from agroindustrial waste. Olive oil mill wastewater (OOMW) is a byproduct of the olive oil production process and is considered a pollutant; however, OOMW contains a wide range of phenolic compounds that have proven antimicrobial properties. This study investigates the extraction of these compounds from OOMW, with the aim of determining their potential antimicrobial activities against several bacterial strains and fungi, including Bacillus spizizenii, Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella aerogenes, Streptococcus uberis, Enterococcus faecalis, and Candida albicans. The OOMW extracts (OEs) were prepared by using three different solvents: ethyl acetate, ethanol, and methanol. The highest total phenolic contents (4.03 g, GAE/L) and the strongest antibacterial activity were obtained with methanol extraction. All OEs showed no antifungal activity against C. albicans. OEs, particularly methanol extracts of OOMW, can be used as bioactive substances in various industries as nutraceuticals and food ingredients, respectively.

show abstract

Multistage recovery process of phenolic antioxidants with a focus on hydroxytyrosol from olive mill wastewater concentrates

Cited by 16 publications

References 74 publications

Detection of Synthetic Antioxidants: What Factors Affect the Efficiency in the Chromatographic Analysis and in the Electrochemical Analysis?

Detection of Synthetic Antioxidants: What Factors Affect the Efficiency in the Chromatographic Analysis and in the Electrochemical Analysis?

Wastewater as a resource for pest control: An overview

Antimicrobial Activities of Olive Oil Mill Wastewater Extracts against Selected Microorganisms

Contact Info

Product

Resources

About