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https://www.readbyqxmd.com/read/29151190/elucidation-of-functional-chemical-groups-responsible-of-compost-phytotoxicity-using-solid-state-13-c-nmr-spectroscopy-under-different-initial-c-n-ratios
#1
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...
November 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29136891/detection-and-quantification-of-extra-virgin-olive-oil-adulteration-by-means-of-autofluorescence-excitation-emission-profiles-combined-with-multi-way-classification
#2
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
https://www.readbyqxmd.com/read/29124388/measuring-the-impact-of-olive-pomace-enriched-biscuits-on-the-gut-microbiota-and-its-metabolic-activity-in-mildly-hypercholesterolaemic-subjects
#3
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
https://www.readbyqxmd.com/read/29055707/purification-and-characterization-of-a-novel-tannase-produced-by-kluyveromyces-marxianus-using-olive-pomace-as-solid-support-and-its-promising-role-in-gallic-acid-production
#4
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...
October 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28992463/use-of-zero-order-diffraction-of-a-grating-monochromator-towards-convenient-and-sensitive-detection-of-fluorescent-analytes-in-multi-fluorophoric-systems
#5
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...
October 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28984237/aeribacillus-composti-sp-nov-a-thermophilic-bacillus-isolated-from-olive-mill-pomace-compost
#6
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.8(T), was isolated from the curing step of an olive mill pomace compost sample, collected at the Composting Experimental Centre (CESCO, Salerno, Italy). Strain N.8(T), based on 16S rRNA gene sequence similarities, was most closely related to Aeribacillus pallidus strain H12(T) (=DSM 3670(T)) (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...
October 6, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28959661/tissue-specific-effects-of-feeds-supplemented-with-grape-pomace-or-olive-oil-mill-wastewater-on-detoxification-enzymes-in-sheep
#7
Efthalia Kerasioti, Zoi Terzopoulou, Ourania Komini, Ioannis Kafantaris, Sotiria Makri, Dimitrios Stagos, Konstantinos Gerasopoulos, Nikita Y Anisimov, Aristides M Tsatsakis, Demetrios Kouretas
The aim of the present study was to investigate the effects of livestock feed supplemented with grape pomace (GP) or olive oil mill wastewater (OMW) byproducts on the enzymatic activity and protein expression of antioxidants enzymes, in liver and spleen tissue of sheep. Thus, 36 male sheep of Chios breed were divided into 3 homogeneous groups, control group (n = 12), GP group (n = 12) and OMW group (n = 12), receiving standard or experimental feed. Liver and spleen tissues were collected at 42 and 70 days post-birth...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/28959355/selective-isolation-and-screening-of-actinobacteria-strains-producing-lignocellulolytic-enzymes-using-olive-pomace-as-substrate
#8
Lamia Medouni-Haroune, Farid Zaidi, Sonia Medouni-Adrar, Sevastianos Roussos, Samia Azzouz, Véronique Desseaux, Mouloud Kecha
BACKGROUND: Olive pomace, as the main by-product of the olive oil industry, is recently recycled as fermentation substrate for enzyme production. OBJECTIVES: Actinobacteria isolates were separated from an Algerian soil under olive pomace cultivation and were evaluated for their lignocellulolytic enzymes production. MATERIALS AND METHODS: Isolates of Actinobacteria were separated from soils around oil mills using four isolation media, among them three were enriched by olive pomace...
March 2017: Iranian journal of biotechnology
https://www.readbyqxmd.com/read/28951148/kinetics-of-thermal-decomposition-of-some-biomasses-in-an-inert-environment-an-investigation-of-the-effect-of-lead-loaded-by-biosorption
#9
María Ángeles Martín-Lara, Irene Iáñez-Rodríguez, Gabriel Blázquez, Lucía Quesada, Antonio Pérez, Mónica Calero
The thermal behavior of some types of raw and lead-polluted biomasses typical in south Spain was studied by non-isothermal thermogravimetry. Experiments were carried out in nitrogen atmosphere at three heating rates (5, 10 and 20°C/min). The results of thermogravimetric tests carried out proved that the presence of lead did not change the main degradation pathways of selected biomass (almond shell (AS) and olive pomace (OP)). However, from a point of view of mass loss, lead-polluted samples showed higher decomposition temperatures and decomposition at higher rate...
September 23, 2017: Waste Management
https://www.readbyqxmd.com/read/28873735/physical-properties-and-ftir-analysis-of-rice-oat-flour-and-maize-oat-flour-based-extruded-food-products-containing-olive-pomace
#10
DanYang Ying, Mya Myintzu Hlaing, Julie Lerisson, Keith Pitts, Lijiang Cheng, Luz Sanguansri, Mary Ann Augustin
Olive pomace, a waste stream from olive oil processing, was fractionated by centrifugation to obtain a supernatant and a flesh-enriched fraction, and freeze dried to obtain a powder. The dried supernatant contained 5.8% moisture, 4.8% protein, 3.5% fat, 3.5% ash, 82.4% carbohydrate (including 17.2% dietary fiber) and polyphenols (2970mg gallic acid equivalents (GAE)/100g). The dried flesh-enriched fraction, contained 5.9% moisture, 13.4% protein, 14.2% fat, 3.5% ash, 63.1% carbohydrate (including 42.7% dietary fiber) and polyphenols (1960mg GAE/100g)...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28843691/dietary-supplementation-with-dried-olive-pomace-in-dairy-cows-modifies-the-composition-of-fatty-acids-and-the-aromatic-profile-in-milk-and-related-cheese
#11
F Castellani, A Vitali, N Bernardi, E Marone, F Palazzo, L Grotta, G Martino
This study aimed to evaluate the effect of dietary integration of dried olive pomace (DOP), a by-product of olive oil separation, on nutritional and aromatic properties of milk and cheese. Twenty dairy cows were divided into 2 groups that were balanced for milk yield, parity, and days in milk. The control group was fed a conventional diet (20 kg of dry matter/head per day), whereas the experimental group (EG) received the conventional diet supplemented with DOP as 10% of dry matter. During the trial, milk yield was recorded and the samples of milk, cheese, total mixed rations, and DOP were collected and analyzed to determine the chemical-nutritional composition and aromatic profile...
November 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28772461/properties-of-residue-from-olive-oil-extraction-as-a-raw-material-for-sustainable-construction-materials-part-i-physical-properties
#12
Almudena Díaz-García, Carmen Martínez-García, Teresa Cotes-Palomino
Action on climate, the environment, and the efficient use of raw materials and resources are important challenges facing our society. Against this backdrop, the construction industry must adapt to new trends and environmentally sustainable construction systems, thus requiring lines of research aimed at keeping energy consumption in new buildings as low as possible. One of the main goals of this research is to efficiently contribute to reducing the amount of residue from olive oil extraction using a two-phase method...
January 25, 2017: Materials
https://www.readbyqxmd.com/read/28728005/thermal-destruction-of-organic-waste-hydrophobicity-for-agricultural-soils-application
#13
Francisco Comino, Víctor Aranda, Ana Domínguez-Vidal, María José Ayora-Cañada
Use of organic amendments is a good strategy for combating the growing problem of soil degradation due to deterioration of organic matter content, particularly severe in semi-arid European Mediterranean regions, while at the same time providing an opportunity for recycling organic wastes. Olive mill pomace (OMP), the main by-product of the olive oil industry, is being used increasingly in olive grove soils for this purpose. Although the positive effects of OMP amendments have been widely studied, they also have some negative effects on soil...
July 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28648746/anaerobic-digestion-of-solid-agroindustrial-waste-in-semi-continuous-mode-evaluation-of-mono-digestion-and-co-digestion-systems
#14
Frantseska-Maria Pellera, Evangelos Gidarakos
The present study aimed at investigating the anaerobic digestion of four agroindustrial waste, namely cotton gin waste, winery waste, olive pomace and juice industry waste, in semi-continuous mode, conducting mono-digestion and co-digestion assays, using an artificial organic fraction sample as co-substrate. These assays were divided into two groups, in which different conditions were applied. Group I investigated the variation in two operational parameters, i.e. the organic loading rate (OLR) and the hydraulic retention time (HRT), while in Group II, the assays were fed with different substrates in a sequential order...
June 22, 2017: Waste Management
https://www.readbyqxmd.com/read/28609617/putative-markers-of-adulteration-of-higher-grade-olive-oil-with-less-expensive-pomace-olive-oil-identified-by-gas-chromatography-combined-with-chemometrics
#15
Hazem Jabeur, Malika Drira, Ahmed Rebai, Mohamed Bouaziz
This work has been performed to ascertain that extra-virgin olive oil (EVOO) is free of adulteration. For this purpose, refined pomace olive oils (RPOOs) are commonly used for extra-virgin olive oil adulteration and repassed olive oils (ROOs) are used for lampante olive oil (LOO) fraudulent operation. Indeed, fatty acid ethyl esters could be used as a parameter for the detection of EVOO fraud with 2% RPOO. The addition of >10% RPOO to EVOO would be detected by the amount of erythrodiol, uvaol, waxes, and aliphatic alcohols...
July 5, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28580634/new-by-products-rich-in-bioactive-substances-from-the-olive-oil-mill-processing
#16
Concepción Romero, Eduardo Medina, Maria Antonia Mateo, Manuel Brenes
BACKGROUND: Olive oil extraction generates a large amount of residue consisting mainly of the pomace and leaves when using a two-phase centrifugation system. The aim of this study was to assess the content of phenolic and triterpene compounds in the by-products produced in Spanish olive oil mills. RESULTS: Olive pomace had concentrations of phenolic and triterpene substances lower than 2 and 3 g kg(-1) , respectively. The leaves contained a high concentration of these substances, although those collected from ground-picked olives had lost most of their phenolic compounds...
June 5, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28529051/ultrasound-assisted-biogas-production-from-co-digestion-of-wastewater-sludges-and-agricultural-wastes-comparison-with-microwave-pre-treatment
#17
B Aylin Alagöz, Orhan Yenigün, Ayşen Erdinçler
This study investigates the effect of ultrasonication and microwave sludge disintegration/pre-treatment techniques on the anaerobic co-digestion efficiency of wastewater sludges with olive and grape pomaces. The effects of both co-digestion and sludge pre-treatment techniques were evaluated in terms of the organic removal efficiency and the biogas production. The "co-digestion" of wastewater sludge with both types of pomaces was revealed to be a much more efficient way for the biogas production compared to the single (mono) sludge digestion...
May 11, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28526925/polyphenolic-extract-attenuates-fatty-acid-induced-steatosis-and-oxidative-stress-in-hepatic-and-endothelial-cells
#18
Laura Vergani, Giulia Vecchione, Francesca Baldini, Elena Grasselli, Adriana Voci, Piero Portincasa, Pier Francesco Ferrari, Bahar Aliakbarian, Alessandro A Casazza, Patrizia Perego
PURPOSE: Phenolic compounds (PC) of virgin olive oil exert several biochemical and pharmacological beneficial effects. Some dietary PC seem to prevent/improve obesity and metabolic-related disorders such as non-alcoholic fatty liver disease (NAFLD). We investigated the possible effects of PC extracted from olive pomace (PEOP) and of the main single molecules present in the extract (tyrosol, apigenin, oleuropein, p-coumaric and caffeic acid) in protecting hepatocytes and endothelial cells against triglyceride accumulation and oxidative stress...
May 19, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28488139/optimization-of-lipase-production-by-solid-state-fermentation-of-olive-pomace-from-flask-to-laboratory-scale-packed-bed-bioreactor
#19
Felisbela Oliveira, José Manuel Salgado, Luís Abrunhosa, Noelia Pérez-Rodríguez, José M Domínguez, Armando Venâncio, Isabel Belo
Lipases are versatile catalysts with many applications and can be produced by solid-state fermentation (SSF) using agro-industrial wastes. The aim of this work was to maximize the production of Aspergillus ibericus lipase under SSF of olive pomace (OP) and wheat bran (WB), evaluating the effect on lipase production of C/N ratio, lipids, phenols, content of sugars of substrates and nitrogen source addition. Moreover, the implementation of the SSF process in a packed-bed bioreactor and the improvement of lipase extraction conditions were assessed...
May 9, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28460948/enzymatic-biotransformation-of-polyphenolics-increases-antioxidant-activity-of-red-and-white-grape-pomace
#20
Isabela M Martins, Bruna S Roberto, Jeffrey B Blumberg, C-Y Oliver Chen, Gabriela A Macedo
Grape pomace (GP) is a polyphenolic-rich byproduct of wine production. As most polyphenolics are either bound to cellular matrices or present as free polymeric forms, treatment with hydrolytic enzymes may act to increase GP functionalities. The aim of this study was to examine the impact of tannase alone (T), pectinase plus cellulase (PC) or a mixture of them (TPC) on the hydrolysis of polyphenolics in red GP (RGP), white GP (WGP), and mixed GP (MGP) from Brazilian wine production, as well as antioxidant activity of the products...
November 2016: Food Research International
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