chemistry and health of olive oil phenols pdf

Chemistry and health of olive oil phenols pdf

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Olive Oil Phenols

Oxidative Medicine and Cellular Longevity

Olive Oil: Antioxidant Compounds and Their Potential Effects over Health

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Olive Oil Phenols

Olive oils contain numerous substances that have a beneficial role in human health. Phenols are natural compounds that are present in extra-virgin olive oil EVOO , and they are produced at the malaxation step of the olive oil production. The four most abundant phenols in EVOO are oleocanthal, oleacein, ligstroside aglycon, and oleuropein aglycon. These phenols exhibit significant biological effects in many diseases, participating in various cellular and biochemical processes. Oleocanthal can protect and prevent against the Alzheimer disease, demonstrates acute antiplatelet effects, which has a vital role against cancer, and can act like ibuprofen. Oleacein has antioxidant and anti-inflammatory activities and helps against atherosclerosis.

Schiff, 6, Sesto Fiorentino, Italy. Olea europaea L. Among these minor components, phenolics are relevant molecules for human health. Specifically, the cardioprotective properties of the Mediterranean diet MD related to olive oil consumption, and the biological activities of polyphenols recovered from olive oil by-products and leaves were described. Recent European projects such as EPIC European Prospective Investigation into Cancer and Nutrition and EPICOR long-term follow-up of antithrombotic management patterns in acute coronary syndrome patients have demonstrated the functional and preventive activities of EVOO showing the relation both between cancer and nutrition and between consumption of EVOO, vegetables, and fruit and the incidence of coronary heart disease. Extra-virgin olive oil EVOO , extracted physically from the fruit, is known for its nutritional properties and health effects, especially against cardiovascular diseases CVDs. Only EVOO, and not all seed oils, has a high percentage of fatty acids with a correct balance of unsaturated fatty acids stabilized by minor polar compounds, with an antioxidant character [ 1 ].

Olive oil is considered as a key component of the healthy property of the Mediterranean diet due to its fatty acid, vitamin and polyphenol composition. High monounsaturated fatty acids, and in particular oleic acid, are responsible for the benefits obtained from consuming olive oil. Also, the known benefits are considered to be due to a combination of several phytochemicals. There are more than minor components in olive oil with biological activities. Phenolic acids and derivatives vanillic acid, gallic acid , phenolic alcohols tyrosol, hydroxytyrosol , secoiridoids oleuropein, oleocanthal , lignans pinoresinol , and flavones luteolin are phenolic compounds of olive oil. Olive oil polyphenols have antioxidant, anti-inflammatory, antimicrobial, antiviral, anti-atherogenic, anti-thrombotic, anti-mutagenic and hypoglycemic characteristics.

Oxidative Medicine and Cellular Longevity

Olive oil possesses a predominant role in the diet of countries around the Mediterranean basin, whereas it is a known constituent of several sectors of human culture. The polyphenolic composition of olive oil seems to be a key factor in its beneficial biological properties. Based on the above, the aim of this study was to correlate the polyphenolic composition of five extracts derived from a Greek olive oil variety with their antioxidant potency and antimutagenic activities in vitro with chemical-based techniques and cell culture-based assays. However, this observation was not evident in the cell culture model i. Specifically, the T-rich extracts more effectively increased endogenous GSH levels measured by flow cytometry than did the HT-rich compounds. Also, olive oil compounds contributed variously to the expression of genes implicated in the cell antioxidant machinery, as indicated by quantitative PCR.

Grant C. Kristen N. Quyen Anh T. Selina C. Tweets by JFoodChemNutr. Four olive oils with varying amounts of total phenols were exposed to four different heating conditions. We found olive oils have reasonably high smoke point that is suitable for typical home-cooking conditions and fresh olive oil with low FFA and high phenolics are important for the conservation of olive oil quality and health benefits.

ROSA M. Phenolic compounds have shown to inhibit LDL oxidation in vitro and ex vivo; however, they are hydrosoluble compounds while LDL is a lipoprotein. This methodology allowed us to demonstrate the in vitro binding capacity of tyrosol, one of the main phenolic compounds in olive oil, to LDL. In the intervention dietary study with volunteers, food rich in phenolic compounds affected LDL composition. Changes in LDL phenolics composition are not observed after the short-term ingestion of food rich in phenolic compounds.

Olive Oil: Antioxidant Compounds and Their Potential Effects over Health

Вид купола всегда приносил ей успокоение: он оказался маяком, посверкивающим в любой час суток. Но сегодня все было по-другому. Она поймала себя на мысли, что глаза ее смотрят в пустоту. Прижавшись лицом к стеклу, Мидж вдруг почувствовала страх - безотчетный, как в раннем детстве.

Он посмотрел на Сьюзан, стоявшую рядом с ним на платформе. Казалось, все происходящее было от нее безумно. Джабба вздохнул и снова вытер пот со лба.

Никакой коммерческий производитель и мечтать не мог о создании шифровального чипа, потому что нормальные алгоритмы такого рода со временем устаревают. Но Цифровая крепость никогда не устареет: благодаря функции меняющегося открытого текста она выдержит людскую атаку и не выдаст ключа. Новый стандарт шифрования.

Они со Сьюзан слушали этот концерт в прошлом году в университете в исполнении оркестра Академии Святого Мартина. Ему вдруг страшно захотелось увидеть ее - сейчас. Прохладный ветерок кондиционера напомнил ему о жаре на улице.

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Беккер снова вздохнул, решительно подошел к двери и громко постучал. Пора переходить к решительным действиям. Немец рывком открыл дверь и собрался было закричать, но Беккер его опередил.

Услышав имя Дэвида, произнесенное вслух, Сьюзан дала волю своему горю. Сначала она едва заметно вздрогнула, словно от озноба, и тут же ее захлестнула волна отчаяния. Приоткрыв дрожащие губы, она попыталась что-то сказать, но слов не последовало.

Экран монитора был погашен, но она понимала, что он не заперт: по краям экрана было видно свечение. Криптографы редко запирали свои компьютеры, разве что покидая Третий узел на ночь. Обычно они лишь уменьшали их яркость; кодекс чести гарантировал, что никто в их отсутствие к терминалу не прикоснется.


  • Beattie T. 11.04.2021 at 07:40

    Chemical characterization and oxidative stability of olive oils extracted from olive trees of Southern Brazil.

  • Brigitte B. 15.04.2021 at 14:44

    These metrics are regularly updated to reflect usage leading up to the last few days.

  • Siosioreti1991 15.04.2021 at 19:38

    Olive oil is a liquid fat obtained from olives the fruit of Olea europaea ; family Oleaceae , a traditional tree crop of the Mediterranean Basin , produced by pressing whole olives and extracting the oil.

  • Alice L. 18.04.2021 at 20:56

    Presumably, regular dietary consumption of virgin olive oil containing phenolic compounds manifests in health benefits associated with a.

  • Makpobeano1956 20.04.2021 at 01:57

    – Aruoma OI () Nutrition and health aspects of free radicals and. antioxidants. Food and Chemical.


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