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olive pomace

Mariem Samet, Mariam Charfeddine, Lotfi Kamoun, Oumèma Nouri-Ellouze, Radhia Gargouri-Bouzid
Three composts made of industrial wastes were prepared by mixing olive oil mill waste water (OMW), olive pomace, coffee grounds, and phosphogypsum (0, 10, and 30%). Potato plants (Solanum tuberosum) cultivated in a greenhouse were used to screen compost tea suppressive ability. All compost tea treatments inhibited Fusarium solani growth and improved plant growth and response to F. solani infection. The antagonistic effects of the different treatments were associated with a marked increase of the antioxidant enzymes and PR (pathogenesis related) protein expression and a decrease of disease severity...
May 2, 2018: Environmental Science and Pollution Research International
Alessandra De Bruno, Rosa Romeo, Francesca L Fedele, Andrea Sicari, Amalia Piscopo, Marco Poiana
In this study, the effects of experimental variables such as type of solvent, sample/solvent ratio, and time of extraction have been evaluated to individuate the best results in phenolic recovery by Olive Pomaces (OP) belonging to Carolea and Ottobratica cultivars. Folin-Ciocaulteu procedure and DPPH and ABTS assays were used, respectively, for total phenol quantification and total antioxidant activity of pomace extracts. The ethanol/water mixture was resulted the most efficient extraction solvent for both olive cultivars...
April 30, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
Natalie P Bonvino, Julia Liang, Elizabeth D McCord, Elena Zafiris, Natalia Benetti, Nancy B Ray, Andrew Hung, Dimitrios Boskou, Tom C Karagiannis
Accumulated epidemiological, clinical and experimental evidence has indicated the beneficial health effects of the Mediterranean diet, which is typified by the consumption of virgin olive oil (VOO) as a main source of dietary fat. At the cellular level, compounds derived from various olive (Olea europaea), matrices, have demonstrated potent antioxidant and anti-inflammatory effects, which are thought to account, at least in part, for their biological effects. Research efforts are expanding into the characterization of compounds derived from Olea europaea, however, the considerable diversity and complexity of the vast array of chemical compounds have made their precise identification and quantification challenging...
January 1, 2018: Database: the Journal of Biological Databases and Curation
Joaquín Velasco, Francisca Holgado, Gloria Márquez-Ruiz, M Victoria Ruiz-Méndez
BACKGROUND: Pentacyclic triterpenic acids (TA) are phytochemicals of increasing nutritional interest due to their bioactive properties, such as anti-inflammatory, anti-tumoral, anti-hyperglycemic, hepatoprotective and others. Crude olive pomace oils constitute a non-exploited significant source of these compounds. In the present study, concentrates of TA were extracted and characterized from crude olive pomace oils that were obtained by centrifugation and subsequent solvent extraction, respectively...
March 25, 2018: Journal of the Science of Food and Agriculture
Reza Amin, Alireza Khorshidi, Abdollah Fallah Shojaei, Shahla Rezaei, Mohammad Ali Faramarzi
Lignocellulose is considered a major source for the production of valuable chemicals. Efficient degradation of lignin as the natural carrier of the lignocellulosic biomass represents a key limiting factor in biomass digestibility. Recently, biological delignification methods have been promoted as sustainable and environmentally friendly alternatives to the traditional technologies. In this study, porous nanocomposite of Fe3 O4 @SiO2 @KIT-6 with magnetic properties was synthesized. The immobilized laccase supported on nanocomposite with enhanced stability in a hydrophobic ionic liquid has been developed for both olive pomace delignification and degradation of phenolic extracts from the pomace...
March 19, 2018: International Journal of Biological Macromolecules
Fotios Tsopelas, Dimitris Konstantopoulos, Anna Tsantili Kakoulidou
In the present work, two approaches for the voltammetric fingerprinting of oils and their combination with chemometrics were investigated in order to detect the adulteration of extra virgin olive oil with olive pomace oil as well as the most common seed oils, namely sunflower, soybean and corn oil. In particular, cyclic voltammograms of diluted extra virgin olive oils, regular (pure) olive oils (blends of refined olive oils with virgin olive oils), olive pomace oils and seed oils in presence of dichloromethane and 0...
July 26, 2018: Analytica Chimica Acta
Ibtissem Ben Hammouda, Mehdi Triki, Bertrand Matthäus, Mohamed Bouaziz
The frying performance of pure refined olive-pomace oil (ROPO) and blended with refined coconut oil (RCO) (80:20) was compared during a frying operation of French fries at 180 °C. Blending polyunsaturated oils with highly saturated or monounsaturated oils has been studied extensively, however in literature there is no study has been reported so far on blending ROPO (rich in monounsaturated fatty acids) with RCO (rich in saturated fatty acids) to formulate new frying oils. At the end of the frying process, the blend of ROPO/RCO exhibited a higher chemical stability than the pure ROPO based on total polar compounds (TPC), and polymers...
April 4, 2018: Journal of Agricultural and Food Chemistry
Alice Cappucci, Susana P Alves, Rui J B Bessa, Arianna Buccioni, Federica Mannelli, Mariano Pauselli, Carlo Viti, Roberta Pastorelli, Valentina Roscini, Andrea Serra, Giuseppe Conte, Marcello Mele
Agro-industrial by-products contain several secondary plant metabolites, such as polyphenols, tannins, saponins, and essential oils. The effects of these compounds on animal metabolism may vary significantly according to the dose, the chemical nature of the molecules, and the overall composition of the diet. In the Mediterranean area, the olive oil extraction is associated with 2 by-products: olive pomace and wastewater, both rich in polyphenols. In particular, wastewater may be further processed to obtain olive crude phenolic concentrate (OCPC)...
March 7, 2018: Journal of Dairy Science
Susanna Buratti, Cristina Malegori, Simona Benedetti, Paolo Oliveri, Gabriella Giovanelli
The aim of this work was to investigate the applicability of e-senses (electronic nose, electronic tongue and electronic eye) for the characterization of edible olive oils (extra virgin, olive and pomace) and for the assessment of extra virgin olive oil and olive oil quality decay during storage at different temperatures. In order to obtain a complete description of oil samples, physico-chemical analyses on quality and nutritional parameters were also performed. Data were processed by PCA and a targeted data processing flow-sheet has been applied to physico-chemical and e-senses dataset starting from data pre-processing introducing an innovative normalization method, called t0 centering...
May 15, 2018: Talanta
Hasene Keskin Çavdar, Derya Koçak Yanık, Fahrettin Göğüş, Sibel Fadıloğlu
The objective of this research was to synthesize and characterize a novel modified lipid which is composed of mainly oleic acid at sn-2 position and a hydrophobic essential amino acid derivative (N-acetyl-l-leucine) at sn-1(3) or sn-1, 3 positions. LC-MS-MS analysis indicated that the target modified lipid structure was obtained at the end of the developed reaction. Response surface methodology was applied to enhance a reliable empirical model for prediction and to optimize reaction conditions: reaction time (8 to 24 hr), reaction temperature (40 to 55 °C), and enzyme load (15 to 30 wt%)...
March 2018: Journal of Food Science
Francesco Caponio, Giacomo Squeo, Lucio Brunetti, Antonella Pasqualone, Carmine Summo, Vito M Paradiso, Pasquale Catalano, Biagio Bianchi
BACKGROUND: Nowadays, olive oil extraction is basically achieved by means of two-phase decanters, which allow a reduction of water consumption and the leaching of phenolic compounds. Despite this, most of the working settings derive from studies carried out on three-phase decanters. Hence, the aim of the present study was to assess the influence of two-phase decanter feed pipe position (FP) on the extraction efficiency and chemical-sensory characteristics of virgin olive oil. Three different positions were considered: at 825 mm (FP1), 610 mm (FP2) and 520 mm (FP3) from the outlet of the oily phase...
February 10, 2018: Journal of the Science of Food and Agriculture
Monica Averna, Alessandro A Casazza, Antonino Martines, Marco Pedrazzi, Alice Franchi, Roberta De Tullio, Patrizia Perego, Edon Melloni
We are reporting in the present study that molecules extracted from olive pomace prevent cell death induced by Ca2+ -overloading in different cell types. Exposure of cells to these molecules counteracts the Ca2+ -induced cell damages by reducing the activation of the Ca2+ -dependent protease calpain, acting possibly through the modification of the permeability to Ca2+ of the plasma membrane. The purification step by RP-HPLC suggests that effective compound(s), differing from the main biophenols known to be present in the olive pomace extract, could be responsible for this effect...
January 4, 2018: Natural Product Research
Tzu-Kai Lin, Lily Zhong, Juan Luis Santiago
Plant oils have been utilized for a variety of purposes throughout history, with their integration into foods, cosmetics, and pharmaceutical products. They are now being increasingly recognized for their effects on both skin diseases and the restoration of cutaneous homeostasis. This article briefly reviews the available data on biological influences of topical skin applications of some plant oils (olive oil, olive pomace oil, sunflower seed oil, coconut oil, safflower seed oil, argan oil, soybean oil, peanut oil, sesame oil, avocado oil, borage oil, jojoba oil, oat oil, pomegranate seed oil, almond oil, bitter apricot oil, rose hip oil, German chamomile oil, and shea butter)...
December 27, 2017: International Journal of Molecular Sciences
Suzana Madžarić, Monika Kos, Damjana Drobne, Matej Hočevar, Anita Jemec Kokalj
We investigated how different carbonized materials, or chars (olive mill pomace biochar (BC) and urban greens pruning residues hydrochar (HC)) affect an important member of soil fauna, the terrestrial isopod Porcellio scaber. The selection behavior of isopods towards chars after a 48 h exposure was studied in (i) soil-char amended tests with single and multiple choices, and (ii) tests with chars offered as pure material. Finally, we exposed the isopods to char-amended soils for a period of 14 days to follow the effect on food consumption, body mass and activities of enzymes that are commonly altered upon stressor exposure (acetylcholinesterase, AChE, and glutathione S-transferase, GST)...
March 2018: Environmental Pollution
Khalid Azim, Youssef Faissal, Brahim Soudi, Claude Perissol, Sevastianos Roussos, Imane Thami Alami
More than 1 million tons of fresh organic wastes is produced in the Souss-Massa region in Morocco. Tomato organic residues represent more than 25% of the total organic wastes and are deposited in uncontrolled landfills. Thus, composting can represent a valuable and pertinent solution to this environmental problem. The objectives of this experiment are to identify the potential functional groups responsible for compost phytotoxicity and to determine the optimum initial carbon to nitrogen ratio (C/N) for maximum recovery of tomato residues...
February 2018: Environmental Science and Pollution Research International
Isabel Durán Merás, Jaime Domínguez Manzano, Diego Airado Rodríguez, Arsenio Muñoz de la Peña
Within olive oils, extra virgin olive oil is the highest quality and, in consequence, the most expensive one. Because of that, it is common that some merchants attempt to take economic advantage by mixing it up with other less expensive oils, like olive oil or olive pomace oil. In consequence, the characterization and authentication of extra virgin olive oils is a subject of great interest, both for industry and consumers. This paper reports the potential of front-face total fluorescence spectroscopy combined with second-order chemometric methods for the detection of extra virgin olive oils adulteration with other olive oils...
February 1, 2018: Talanta
Lorenza Conterno, Francesca Martinelli, Matteo Tamburini, Francesca Fava, Andrea Mancini, Maddalena Sordo, Massimo Pindo, Stefan Martens, Domenico Masuero, Urska Vrhovsek, Claudia Dal Lago, Gabriele Ferrario, Mario Morandini, Kieran Tuohy
PURPOSE: Olive pomace is a major waste product of olive oil production but remains rich in polyphenols and fibres. We measured the potential of an olive pomace-enriched biscuit formulation delivering 17.1 ± 4.01 mg/100 g of hydroxytyrosol and its derivatives, to modulate the composition and metabolic activity of the human gut microbiota. METHODS: In a double-blind, controlled parallel dietary intervention 62 otherwise healthy hypercholesterolemic (total plasma cholesterol 180-240 mg/dl) subjects were randomly assigned to eat 90 g of olive pomace-enriched biscuit (olive-enriched product, OEP) or an isoenergetic control (CTRL) for 8 weeks...
November 9, 2017: European Journal of Nutrition
Abeer E Mahmoud, Shadia A Fathy, Mona M Rashad, Magda K Ezz, Amira T Mohammed
Tannase is considered one of the most important industrial enzymes that find great applications in various sectors. Production of tannases through solid state fermentation (SSF) using agro-industrial wastes is an eco-friendly and cheap technology. Tannase was produced by the yeast Kluyveromyces marxianus using olive pomace as a solid support under SSF. It was purified using ammonium sulfate fractional precipitation followed by Sephadex G-200 gel filtration resulting in 64.6% enzyme yield with 1026.12U/mg specific activity and 24...
February 2018: International Journal of Biological Macromolecules
Suraj Kumar Panigrahi, Ashok Kumar Mishra
White light excitation fluorescence (WLEF) is known to possess analytical advantage in terms of enhanced sensitivity and facile capture of the entire fluorescence spectral signature of multi component fluorescence systems. Using the zero order diffraction of the grating monochromator on the excitation side of a commercial spectrofluorimeter, it has been shown that WLEF spectral measurements can be conveniently carried out. Taking analyte multi-fluorophoric systems like (i) drugs and vitamins spiked in urine sample, (ii) adulteration of extra virgin olive oil with olive pomace oil and (iii) mixture of fabric dyes, it was observed that there is a significant enhancement of measurement sensitivity...
February 15, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Ilaria Finore, Alessia Gioiello, Luigi Leone, Pierangelo Orlando, Ida Romano, Barbara Nicolaus, Annarita Poli
A Gram-stain-positive, aerobic, endospore-forming, thermophilic bacterium, strain N.8T , was isolated from the curing step of an olive mill pomace compost sample, collected at the Composting Experimental Centre (CESCO, Salerno, Italy). Strain N.8T , based on 16S rRNA gene sequence similarities, was most closely related to Aeribacillus pallidus strain H12T (=DSM 3670T ) (99.8 % similarity value) with a 25 % DNA-DNA relatedness value. Cells were rod-shaped, non-motile and grew optimally at 60 °C and pH 9...
November 2017: International Journal of Systematic and Evolutionary Microbiology
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