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Wyświetlanie 1-15 z 46
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:
Alternative Evaluation of Olive Pomace (Pirina) as Production Waste
Autorzy:
Atilgan, Atilgan
Rolbiecki, Roman
Saltuk, Burak
Ertop, Hasan
Markovic, Monika
Powiązania:
https://bibliotekanauki.pl/articles/2069938.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
biogases
map
olive
pirina
waste
Opis:
With the increasing need for energy, energy studies to be obtained from waste gain importance. In this study, it has been tried to determine the amount of biogas energy that can be obtained from olive pomace (pirina), which is produced by processing oil olives. Numerical maps of pirina amounts and potential biogas energy values and location maps of the proposed pirina processing plant were created. The necessary calculations were made by comparing the obtained results with the relevant literature information. In the study, the current potential biogas energy amount was calculated, maps were created and the electricity and gasoline energy equivalent levels of this energy were tried to be calculated using the 2015-2019 data of the Mediterranean, Aegean and Marmara Regions. The total potential amount of pirina in the research area is 1853375.7 tons and the potential biogas energy amount that can be obtained is 33360762.4 MJ. Pirina, which is the production waste after pressing the olives for oil, can be used for energy production. By using pirina to obtain biogas energy, both the utilization of pirina and the development of the regions will be provided.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 594--612
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Oliwka europejska (Olea europaea) – najdłużej żyjący organizm w śródziemnomorskiej Europie
European olive (Olea europaea) – the longest living organism in Mediterranean Europe
Autorzy:
Boratyński, Adam
Boratyńska, Krystyna
Borkowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1196168.pdf
Data publikacji:
2021-04-27
Wydawca:
Polskie Towarzystwo Dendrologiczne
Tematy:
olive trees
monumental trees
Mediterranean basin
Opis:
Olea europaea is the most emblematic tree of the Mediterranean region. It has been cultivated for about 6000 years for its fruit, oil, wood, and for medicinal and cultural purposes. The research data concerns the monumental olive trees in the region. The oldest and biggest known trees are in Lebanon, Israel, Greece, Albania and Italy. The oldest of those, ‘Sisters of Noahʼ (Lebanon) are believed to be 5000–6000 years old. The most numerous groups of monumental olives were reported from Apulia in Italy and Albania. The oldest and biggest olive trees could be remnants of ancient plantations from the Hellenic and Roman times, but this hypothesis should be confirmed in a detailed study.
Źródło:
Rocznik Polskiego Towarzystwa Dendrologicznego; 2020, 68; 11-33
2080-4164
2300-8326
Pojawia się w:
Rocznik Polskiego Towarzystwa Dendrologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chosen physical properties of olive cultivars [Olea europaea L.]
Autorzy:
Ozturk, I
Ercisli, S.
Kara, M.
Powiązania:
https://bibliotekanauki.pl/articles/25863.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
physical property
olive
plant cultivar
Olea europaea
Źródło:
International Agrophysics; 2009, 23, 3; 309-312
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Susceptibility of olive fruit fly, Bactrocera oleae (Diptera: Tephritidae) pupae to entomopathogenic nematodes
Autorzy:
Torrini, G.
Mazza, G.
Benvenuti, C.
Roversi, P.F.
Powiązania:
https://bibliotekanauki.pl/articles/65664.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
olive
fruit fly
Bactrocera oleae
olive fruit fly
Diptera
Tephritidae
pupa
biological control
Heterorhabditis
Steinernema
entomopathogenic nematode
nematode
Opis:
The olive fruit fly Bactrocera oleae is one of the most serious and economically damaging insects worldwide, affecting the quality and quantity of both olive oil and table olives. Laboratory bioassays were conducted for the first time to evaluate the susceptibility of B. oleae pupae to two entomopathogenic nematodes (EPN) species, Steinernema carpocapsae and Heterorhabditis bacteriophora. The nematodes tested caused pupal mortality of 62.5% and 40.6%, respectively. The most noteworthy result was obtained with S. carpocapsae which was able to infect 21.9% of the emerged adults. Since this tephritid fly spent several months in the soil as pupa, the use of EPNs could be a promising method to control this pest.
Źródło:
Journal of Plant Protection Research; 2017, 57, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of tegument, endosperm, cold treatment and harvest date on germination of wild olive
Autorzy:
Hannahi, H.
Marzouk, S.
El Gazzah, M.
Powiązania:
https://bibliotekanauki.pl/articles/41441.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
tegument
endosperm
cold treatment
harvest date
seed
germination
wild olive tree
olive tree
Olea europaea
dormancy
plant species
Opis:
Wildolive seeds (Olea europaea L. var. sylvestris), calledoleaster do not germinate when placedunder favourable conditions. In a series of experiments the effects of the harvest date, the endosperm, the tegument, andthe coldtreatment were evaluatedon germination of seeds andembryos. The germination percentage of embryos and seeds harvested at different harvest dates increased during October month, these percentages decreased during November month, whereas no seeds and embryos harvested on the middle of December germinated. Embryo germinability was always higher than seed germinability, and this may be due to an inhibiting effect of the teguments and the endosperm on seed germination. Such dormancy, which gradually increased during maturation, could reside mainly in the endosperm and partly within the embryo. The cold treatment at 4°C for four to thirteen days increased seed and embryo germinability, whereas lengthening time at this temperature showeda negative effect on seedgermination. The germination of seeds andembryos from six wildolive trees was also examinedby recording the germination percentage andminimum imbibition time (Tmi).
Źródło:
Dendrobiology; 2011, 65
1641-1307
Pojawia się w:
Dendrobiology
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:
Energy Valorization of Olive Mill Waste Cake – Extraction of Vegetable Oil and Transesterification
Autorzy:
Mehdaoui, Imane
Majbar, Zineb
Hassani, El Mokhtar Saoudi
Mahmoud, Rachid
Atemni, Ibrahim
Ben Abbou, Mohamed
Taleb, Mustapha
Rais, Zakia
Powiązania:
https://bibliotekanauki.pl/articles/24201716.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
olive mill waste cake
extraction
valorisation
vegetable oil
transesterification
biodiesel
Opis:
The olive mill wastewater, effluents from the trituration of olives, are treated in most Mediterranean countries by natural evaporation. However, this method of treatment is a source of air and soil pollution by the generation of solid waste, called olive mill waste cake. This work focused on extracting of vegetable oil from this by-product for biodiesel production by transesterification. The extraction took place with a Soxhlet extractor, using hexane as solvent. The vegetable oil and biodiesel were characterized by measuring the physicochemical parameters that identify them according to AFNOR standards. The extraction results show that the oil yield is 21.28%. The oil obtained is characterized by density, water and ash content, acidity, saponification, peroxide and ester. The yield of the oil esterification reaction is 86.41% or about 185 Kg of biodiesel/ton of olive mill waste cake, and in terms of energy 2783.7 MJ or 2 GW.t-1. The biodiesel produced is comparable to petroleum diesel according to EN 14214, 2013.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 306--315
2299-8993
Pojawia się w:
Journal of Ecological Engineering
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:
Application of Statistical Methods for the Comparative Study of the Degree of Pollution of Wastewater Collected from Three Olive Mills in Tangier-Tetouan-Al Hoceima Region (Northern Morocco)
Autorzy:
Es Saouini, Hind
Bouzid, Saida
Trankil, Abdellah
Amharref, Mina
Bernoussi, Abd Samed
Powiązania:
https://bibliotekanauki.pl/articles/24201736.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
olive mill wastewater
degree of pollution
multivariate statistical method
ACPN
HCPC
Opis:
Olive mill wastewaters represent a severe environmental problem, especially in Mediterranean countries. Indeed, the treatment and recovery processes developed so far remain very limited and their cost is very high. However, treatment by shallow evaporation ponds in the open air remains, until now, the most used technique despite the efforts made. The volume and characteristics of this liquid effluent depend, among other things, on the nature of the extraction process used. In this context, this work aims to evaluate the effect of the mode of trituration and storage in the evaporation ponds on the quality of olive oil mill wastewaters. These effluents were collected from three olive mills located in two different provinces in Northern Morocco during the 2021–2022 olive growing season. The sampling has considered different points according to different steps of the process. The analytical work corresponded to the measurement of in-situ parameters (Temperature (T°), Dissolved Oxygen (DO), Electrical Conductivity (EC) and pH degree (pH)) and other laboratory analysis (Suspension Matter (SM), Dry Matter (DM), Fatty Matter (FM), biochemical (BOD5) and chemical (COD)demands in oxygen). Results showed a high degree of environmental degradation. Indeed, these effluents are characterized, on average, by elevated concentrations of biological and chemical oxygen demands and suspended solids reaching up to 0.43 g/L ± 0.87, 1.69 g/L ±0.71 and 30.78 g/L ±25.1, respectively. This study also showed, except for two-phase olive mill BNANDA, a slightly alkaline nature of the vegetable waters (7.81<pH<8.52), as opposed to what was reported in the literature, and high levels in fat content (4.73 g/L ±3.85). Moreover, the estimated volume of vegetable water released in the study area during the 2019/2020 olive growing season (350×103 m3) is very high considering its equivalence to domestic water. Normalized Principal Component Analysis (ACPN) and Hierarchical Principal Component Classification (HCPC) indicate that differences in the composition of this wastewater were more pronounced between the extraction processes than by the origins of the vegetable waters (fresh or stored in the natural evaporation pond).
Źródło:
Journal of Ecological Engineering; 2023, 24, 4; 320--332
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of olive leaf polyphenols against H2O2 toxicity in insulin secreting β-cells
Autorzy:
Cumaoğlu, Ahmet
Rackova, Lucia
Stefek, Milan
Kartal, Murat
Maechler, Pierre
Karasu, Çimen
Powiązania:
https://bibliotekanauki.pl/articles/1039946.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
olive
glucose
insulin
hydrogen peroxide
polyphenol
apoptosis
β-cells
oxidative stress
oleuropein
Opis:
In pancreatic β-cells, although H2O2 is a metabolic signal for glucose stimulated insulin secretion, it may induce injury in the presence of increased oxidative stress (OS) as in the case of diabetic chronic hyperglycemia. Olea europea L. (olive) leaves contain polyphenolic compounds that may protect insulin-secreting cells against OS. The major polyphenolic compound in ethanolic olive leaf extract (OLE) is oleuropein (about 20 %), thus we compared the effects of OLE with the effects of standard oleuropein on INS-1 cells. The cells were incubated with increasing concentrations of OLE or oleuropein for 24 h followed by exposure to H2O2 (0.035 mM) for 45 min. H2O2 alone resulted in a significantly decreased viability (MTT assay), depressed glucose-stimulated insulin secretion, increased apoptotic and necrotic cell death (AO/EB staining), inhibited glutathione peroxidase activity (GPx) and stimulated catalase activity that were associated with increased intracellular generation of reactive oxygen species (ROS) (fluorescence DCF). OLE and oleuropein partly improved the viability, attenuated necrotic and apoptotic death, inhibited the ROS generation and improved insulin secretion in H2O2-exposed cells. The effects of oleuropein on insulin secretion were more pronounced than those of OLE, while OLE exerted a stronger anti-cytotoxic effect than oleuropein. Unlike OLE, oleuropein had no significant preserving effect on GPx; however, both compounds stimulated the activity of catalase in H2O2-exposed cells. These findings indicate different modulatory roles of polyphenolic constituents of olive leaves on redox homeostasis that may have a role in the maintenance of β-cell physiology against OS.
Źródło:
Acta Biochimica Polonica; 2011, 58, 1; 45-50
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 46

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