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Wyświetlanie 1-10 z 20
Tytuł:
The Influence of Olive Oil Waste as a Biofuel on the Exhaust Gases of the Internal Combustion Engine
Autorzy:
Al-Aseebee, Munaf D. F.
Naje, Ahmed Samir
Powiązania:
https://bibliotekanauki.pl/articles/24201727.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
olive oil
waste
biofuel
combustion
engine
Opis:
Future options for addressing the depletion of fossil fuels and reducing pollution from internal combustion engines may include biofuel as an alternative fuel. This study aims to experimentally and statistically assess the effect of using diesel-biofuel blends on the emissions of a single-cylinder direct-injection engine. Using recycled olive oil, a chemical Tran’s esterification process was used to create biofuel. The experimental results were contrasted with those of a one-dimensional engine model for exhaust emissions and torque, which showed high agreement between test and numerical data. In order to comprehend the factors that affect the engine’s reaction to variations in fuel composition, the thermodynamic characteristics of the engine for various blends were also supplied. According to the investigation, a mixture with 20% of the volume fraction of oleic acid methyl ester olive-based biofuel and 80% of the volume fraction of pure diesel can be an effective fuel alternative for cleaner exhaust emissions while offering almost the same performance.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 322--328
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical Composition of Monovarietal Extra Virgin Olive Oils Obtained from Tunisian Mills: Influence of Geographical Origin
Autorzy:
Manai-Djebali, Hédia
Trabelsi, Najla
Medfai, Wafa
Hessini, Kamel
Nait Mohamed, Salma
Madrigal-Martínez, Mónica
Martinez Cañas, Manuel A.
Sánchez-Casas, Jacinto
Ben Youssef, Nabil
Oueslati, Imen
Powiązania:
https://bibliotekanauki.pl/articles/24024623.pdf
Data publikacji:
2023-11-28
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
Chétoui olive
olive oil quality
nutritional properties
collection region
Opis:
Comprehending the variability in the chemical composition of olive oil from the same olive variety, based on its geographical origin, is essential. This study investigated the chemical composition of Chétoui olive oils from thirteen mills located in Northern Tunisia's Béja region. The chemical composition of olive oil exhibits substantial regional variability. Free acidity ranged from 0.57% to 0.73%, and peroxide values varied between 7.33 and 14.00 meq O2/kg. Total phenolic content varied as well, with values ranging from 906.53 to 1,298.60 caffeic acid eq/kg (oils from Amdoun and Testour II, respectively). Chlorophyll contents ranged from 2.03 to 7.85 mg/kg, and carotenoids from 1.28 to 3.92 mg/kg. Olive oils from Amdoun and Dogga II were the richest in these compounds. In terms of tocopherols, the range extended from 282.88 mg/kg (oil from Tibar) to 416.79 mg/kg (oil from Testour II). DPPH radical scavenging activity of the polar fraction of all olive oils was higher than that of the non-polar fraction. Fatty acid profiles were mostly similar with exception of the oil from Tibar with lower saturated fatty acid content and higher monounsaturated fatty acid content. Substantial differences in polyunsaturated fatty acid content were found. Triacylglycerol compositions differed as well, with the lowest triolein percentage around 13.66% and the highest at approximately 34.98%. In summary, this study reveals significant regional variations in the chemical composition of Chétoui monovarietal olive oil, highlighting the collection region impact on oil quality and nutritional properties.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 4; 354-366
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena wybranych wskaznikow jakosciowych przechowywanej oliwy extra virgin
Autorzy:
Flaczyk, E
Rudzinska, M.
Gorecka, D.
Szczepaniak, B.
Klimczak, S.
Korczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/833957.pdf
Data publikacji:
2004
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
przechowywanie
oliwa z oliwek
oliwa extra virgin
stabilnosc oksydatywna
jakosc
storage
olive oil
extra virgin olive oil
oxidative stability
quality
Źródło:
Rośliny Oleiste - Oilseed Crops; 2004, 25, 1; 213-224
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetic properties of Lipase obtained from Pseudomonas aeruginosa isolated from crude oil contaminated soil
Autorzy:
Femi-Ola, Titilayo Olufunke
Orjiakor, Paul Ikechukwu
Enerijiofi, Kingsley Erhons
Oke, Iyanuoluwa Omolade
Fatoyinbo, Adebayo Adeola
Powiązania:
https://bibliotekanauki.pl/articles/134985.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
biodegradation
enzymes
gel filtration
lipase
olive oil
Pseudomonas aeruginosa
Opis:
Soil contaminated with crude oil has negatively affected some of the communities in Ekiti State region in Nigeria. There is an increased interest in microbial lipases because of their enormous potential in industrial and biotechnological applications. This study investigated the characteristics of partially-purified lipase from Pseudomonas aeruginosa isolated from oil-contaminated soil in Ado-Ekiti, Ekiti State. The lipase was purified by gel-filtration, having a molecular weight of 39.11 kDa, with Km and Vmax values of 12.50 and 28.86, respectively. The enzyme had an optimal pH of 8.0 and exhibited its maximal activity at 50°C, whereas the relatively stable temperature and pH were 40°C and 5.0, respectively. The enzyme activity was enhanced by olive oil, which served as the carbon source. Sodium chloride enhanced lipase activity, while calcium chloride acted as mild inhibitor, and iron chloride acted a strong inhibitor. The lipase from Pseudomonas aeruginosa possessed properties of an industrial enzyme and will be useful for biodegradation and bioremediation studies.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 59 (131); 154-161
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Productivism and post-productivism in the olive groves of southern Spain
Autorzy:
Sánchez Martínez, José Domingo
Almonacid, Antonio Garrido
Powiązania:
https://bibliotekanauki.pl/articles/1052545.pdf
Data publikacji:
2017-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Common Agricultural Policy
olive oil
rural development
monoculture
southern Spain
Opis:
This work examines changes in the cultivation of olive groves in the region of Andalusia since the accession of Spain to the European Common Market (1986). The first phase is marked by the triumph of productivism in which some of the basic elements of this model (specialisation and intensification) are overwhelming, according to the statistical sources used for this research, although the behaviour in terms of corporate concentration can be considered unique. Also notable, as we will explain later, are other less desirable effects of the process, which can currently be considered environmentally unsustainable. As the weaknesses and contradictions of the model have become evident, in the recent years – as a result of the new stimuli provided by the Common Agricultural Policy – more attention is paid to the opportunities offered by rural development. For the moment, the results of this approach have been limited, although the 2015–2020 planning period could be decisive for its reorientation.
Źródło:
Quaestiones Geographicae; 2017, 36, 2; 57-69
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can olive oil prevent distal colon mucosal atrophy caused by disuse in rats with colostomy? An experimental animal study
Autorzy:
Atıcı, Ahmet
Demir, Emel
Gürsoy, Didar
Çelikkaya, Mehmet
Akçora, Bülent
Powiązania:
https://bibliotekanauki.pl/articles/1391554.pdf
Data publikacji:
2021
Wydawca:
Index Copernicus International
Tematy:
children
distal colon mucosal atrophy caused by disuse
olive oil
Opis:
Aim: This study aims to investigate the effects of pure olive oil on mucosal atrophy of the distal colon in rats. Material and methods: The study included 28 male albino Wistar rats weighing 300–350 g. A total of 28 animals were randomly allocated to four groups: group 1: control group (n = 6); group 2: ostomy group (n = 6); group 3: ostomy + saline group (n = 8); group 4: ostomy + olive oil group (n = 8). By definition, group 1 did not undergo any procedure. The same surgical procedure was performed for groups 2, 3, and 4 as described below. In all animals from these groups, a two-centimeter-long mid-line incision was made and the colon was divided into 5 cm sections, measured from the distal colon to the caecum. Proximal and distal stomas were created 2 cm apart in the midline with the use of single-layer interrupted sutures. All rats were kept under close daily observation until they were terminated postoperatively after the 1st month. Animals from group 2 did not undergo any additional procedures, while those fromgroups 3 and 4 were given 2 mL of saline and olive oil twice a day, respectively. At the end of the 1st month, the rats were re-operated through the same approach. Biopsies were taken from the proximal and distal stomas of all rats in the same manner for further histopathological analysis. Results: Group 1 showed no significant differences in terms of mucosal thickness, muscular thickness, wall thickness or colonic lumen diameter between the proximal and distal segments of the colon. Although there were significant differences between the proximal and distal colostomies for each parameter in groups 2, 3, and 4, the mucosal thickness, muscular thickness, wall thickness, and colonic lumen diameter differences for proximal and distal ostomies were very small in group 4 when compared to groups 2 and 3. Conclusion: The administration of pure olive oil through the distal colon before colostomy closure may reduce the difference in diameter between the proximal and distal intestinal segments. As a result, a more straightforward surgical procedure may be achieved.
Źródło:
Polish Journal of Surgery; 2021, 93, 4; 35-40
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface active agent production from olive oil in high salt conditions and its process optimization
Autorzy:
Taran, M.
Mohamadian, E.
Asadi, S.
Bakhtiyari, S.
Powiązania:
https://bibliotekanauki.pl/articles/779005.pdf
Data publikacji:
2012
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
surface active agent
olive oil
optimization
Taguchi experimental design methodology
Opis:
Microbial surfactants or biosurfactants are surface active amphiphilic macromolecules that are produced by a number of microorganisms (bacteria, yeast and fungi). These compounds have extensive application in various industries especially in food, pharmaceutical and oil industry. The aim of this paper is to optimize the culture conditions for the biosurfactant production from olive oil by a novel halophilic isolate microorganism. The Taguchi experimental design methodology based analysis of olive oil as carbon source, yeast extract as nitrogen source and KH2PO4 as phosphorus source revealed that the olive oil and yeast extract signifi cantly affect biosurfactant production in high salt conditions. Maximum biosurfactant (E24= 40%) produced in the presence of 4% (v/v) olive oil, 0.2% (w/v) yeast extract, and 0.002% (w/v) KH2PO4 . In conclusion, halophilic archaeon Haloarcula sp. IRU1 could be a potential microorganism for the production of biosurfactant from olive oil as carbon source in high salt conditions. The optimal parameters obtained during the optimization process were: olive oil 4%, yeast extract 0.4% and KH2PO4 0.004%.
Źródło:
Polish Journal of Chemical Technology; 2012, 14, 4; 30-34
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of methylene blue from aqueous solutions with natural olive pomace modified with ultrasounds and acid
Autorzy:
Kalipci, E.
Powiązania:
https://bibliotekanauki.pl/articles/208148.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
methylene blue
olive oil
Freundlich isotherm
błękit metylenowy
oliwa z oliwek
izoterma Freundlicha
Opis:
Removal of methylene blue (MB) from aqueous solution by raw olive pomace (ROP) which is a waste of industrial olive oil and olive pomace modified with ultrasounds and acid (MOP) has been investigated. It was found that the data for ROP and MOP were well fit to the Freundlich isotherm model (R2 equal to 0.864 and 0.834, respectively). As a result; it was determined that raw olive pomace can be used for the removal of methylene blue dye (KF = 10.08 mg/g(dm3/mg)1/n) and modified olive pomace had high adsorption capacity for MB (KF = 73.08 mg/g(dm3/mg)1/n).
Źródło:
Environment Protection Engineering; 2016, 42, 3; 5-17
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Overall color parameter as a parameter determining the level of oxidation of olive oil
Autorzy:
Różańska, Anna
Namieśnik, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1179567.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
analytical chemistry
edible oils
food analysis
olive oil
overall color parameter
thermal degradation
Opis:
Edible fats are an important part of a human daily diet. They have a significant effect on the proper functioning of the human body. During frying, the oil is chemically modified and the fats consumed should have the highest oxidation stability. The subject of the study were samples of olive oil bought at local markets in Gdansk. Samples were heated at 20 °C, 60 °C, 100 °C, 140 °C and 180 °C. The aim of the study was to determine the differences in the level of oxidation of selected edible oils which were heated. Studies were performed using spectrophotometric techniques. The dependence between the level of oxidation of the olive oil samples and the value of the overall color parameter was determined. Based on the results obtained, the lower value of the color parameter overall, means that the oil is more degraded. The used procedure is characterized by an uncomplicated and low cost consuming stage of the preparation of the sample for analysis and also enables rapid analysis.
Źródło:
World Scientific News; 2017, 75; 81-88
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Les importations d’amphores Dressel 20 en Gaule Cisalpine
Amphorae Dressel 20 Imported into the Territories of Cisalpine Gaul
Autorzy:
Modrzewska-Pianetti, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/1797167.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Kultur Śródziemnomorskich i Orientalnych PAN
Tematy:
Roman period
Cisalpine
Transalpine
Transpadana
olive oil imports
amphorae Dressel 20
commercial microregions
Opis:
José Remesal Rodríguez examined question of Baetica olive oil imports in Germania and Rome but lacked data on Cisalpine Gaul. This study aims at supplementing the data on import of Baetica olive oil to Northern Italy. As a result of a query in depositsin Friuli and Veneto a map of distribution of amphorae type Dressel 20 on the mainland was established. The image complements data concerning Transpadana and Transalpine Gaul. A map showing finds of Baetica amphorae in the Venetian Lagoon also arose. The lagoons of the Upper Adriatic were used for a transportation of goods to Aquileia, Concordia, Altino, Oderzo, Este and Verona. Dressel 20 amphorae are most numerous in Aquileia. In remaining cities of the Adriatic coast only single pieces of amphorae for olive oil were spotted. Analysis of these amphorae deposits enabled construction of a hypothesis on the existence of microregions in imports of goods to areas of Cisalpine Gaul during the Roman period.
Źródło:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences); 2017, 30; 389-407
2084-6762
2449-9579
Pojawia się w:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences)
Dostawca treści:
Biblioteka Nauki
Artykuł
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