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1

Solid phase microextraction for profiling volatile compounds in liquered white wines

100%
Jelen H. H., Szczurek A.
Acta Scientiarum Polonorum. Technologia Alimentaria
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2010
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tom 09
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nr 1
23-32
Background. Profile of volatile compounds is a distinct feature of wine, which is dependent on the type of wine, grapes, fermentation and ageing processes. Profiling volatile compounds in wine using fast method provides information on major groups of compounds and can be used for classification/differentiation purposes. Solid phase microextraction (SPME) was used for the profiling of volatile compounds in liquered white wines in this study. Material and methods. Different fibers were tested for this purpose: PDMS, Carboxene/ PDMS, Carboxene/DVB/PDMS, Polyacrylate, Divinylbenzene/PDMS. Different times were compared to optimize extraction process. Profile and amount of volatile compounds extracted by SPME fiber was compared for eight liquered white wines. Results. Carboxene/DVB/PDMS showed the highest efficiency in extracting higher alcohols, esters, carbonyls and terpenes. Of tested extraction times ranging from 5 to 30 min. 20 minutes was chosen providing sufficient peak responses. Using SPME total amount of volatile compounds in eight liquered wines was compared - Riversaltes, Offley Porto and Jutrzenka having the highest amount of adsorbed volatiles. Profiles of volatiles of analysed wines revealed that dominating compounds in 6 wines were esters, followed by higher alcohols, two analysed Muscat wines had high terpene contents compared to remaining wines. Conclusion. SPME can be used for relatively fast profiling of wine volatiles, that can be used for wines classification.
2
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Profiling of plasma membrane bound peroxidases in maize (Zea mays L.)

84%
Perrineau F., Decker D., Luthje S.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2013
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tom 94
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nr 2
3
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Selection in swimming training - theoretical study

67%
Eider P.
Central European Journal of Sport Sciences and Medicine
|
2014
|
tom 05
|
nr 1
The aim of this research study is to summarize the notion of preference and selection, which are considered to be the key element of sports training, whatever the discipline. This review provides a theoretical study on the subject. The introduction section deals with the abovementioned terminology, whereas the main paragraph predominantly discusses the process of preference and selection in swimming. Pre-school period (6–7 years of age) is the most significant for swimming selection. Such selection should be led by adequately qualified trainers with long-standing experience in professional training of young swimmers. Young swimming candidates should be characterized by higher-level motor skills, which in turn affect the time/efficiency of acquiring new swimming techniques and sport level. In selection process, it is advised/important to utilize tests which predominantly determine the level of specific motor skills such as: speed, strength, agility, motor coordination, suppleness, and so-called ‘water feeling’. The above mentioned motor skills play an important role in sport training and sport performance. During selection process, sports team trainers should pay special attention to child’s body posture and its length parameters, specifically body’s height, length of upper and lower extremities, length of hands and feet, width parameters of the shoulders and chest. First Grade school swimming classes enrollment is also a crucial factor in identifying sport talents. The selection process should be transparent, have clear health, somatic, as well as motoric requirements, which then affect the pace and effectiveness of acquiring swimming skills and sport level.
4

W Europie jest tymczasem na ruchu okolo 270 pras membranowych

67%
W K.
Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie
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1999
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tom 40
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nr 2
125-126
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