A review of microoxygenation application in wine

Anli R.E. | Cavuldak Ö.A.

Article | 2012 | Journal of the Institute of Brewing118 ( 4 ) , pp.368 - 385

Oxygen has a fundamental role in the vinification process and occurs in the various stages, particularly during the fermentation and aging of wines. Phenolic compounds, such as oxygen, are relatively important in wine quality. Among polyphenols, anthocyanins and tannins are the most important compounds since they contribute to the organoleptic characteristics of wines, particularly colour and astringency. During wine-making and aging, phenolics extracted fromgrapes gradually change owing to biochemical reactions, which result in a decrease in astringency as well as colour stabilization. Therefore, addition of a measured amount of ox . . .ygen, referred to as a microoxygenation process, was proposed to improve wine quality by accelerating these transformations of phenols. In a microoxygenation process, it is assumed that modification of phenolic compound reactions by oxidation should result inmore coloured and less astringent products. In this article, the role of oxygen, phenolics andmicrooxygenation application in wine technology has been reviewed. © 2013 The Institute of Brewing & Distilling Daha fazlası Daha az

Evaluating the efficiency of long term oxygen therapy and mortality in chronic obstructive pulmonary disease [Kronik obstrüktif akciğer hastalığında uzun süreli oksijen tedavisi etkinliğinin ve mortalitenin değerlendirilmesi]

Türkoğlu N. | Örnek T. | Atalay F. | Erboy F. | Altınsoy B. | Tanrıverdi H. | Uygur F.

Article | 2015 | European Journal of General Medicine12 ( 1 ) , pp.18 - 25

It has been shown that Long Term Oxygen Therapy (LTOT) improves polycythemia secondary to hypoxemia and right heart failure, decreases pulmonary hypertension, improves quality of life and increases life expectancy in COPD patients. In our study we aimed to evaluate clinical data, mortality, patient's adherence and efciency of the therapy in COPD patients receiving LTOT. Mean age was 70.5%±9.7 and 57% of the participiants were male. It was shown that one year hospital admission count after LTOT (0.56±0.79) was decreased according to one year hospital admission count before LTOT (1.14±1.64). When arterial blood gas values after LTOT c . . .ompared to the values at the time prescription PaO2 was increased (47.9±4, 53.4±9) and PaCO2 was decreased (56.1±11, 50.5±11). Although there was no signifcant diference in pulmonary artery pressure after LTOT, a signifcant increase was determined in hematocrit (38.37±6, 40.14±6). 41.1% of the patients had at least once device maintanence, and after LTOT only 38.4% had a clinical control due to COPD. The most common reason for irregular use was lack of necessity. Mean daily oxygen usage was 13.88±4.35 hours/day and 68.8% of the patients were using 15 hours or more. Mean follow-up of the patients were 17.85±14.53 (1-55) months and mortality rate in this period was 67%. Mortality was higher in LTOT with 15hours/day or more compared to less than 15 hours (respectively 54.6%, 12.5%). In conclusion, all patients with an indication for LTOT should be followed by national registry system and monitored in terms of technical services. Patients adherence and routine controls should be provided. Key words: COPD, mortality, concentrator, oxygen, LTOT © 2015, TIP ARASTIRMALARI DERNEGI. All rights reserved Daha fazlası Daha az

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