scholarly journals Influence of locality on content of phenolic compounds in white wines

2013 ◽  
Vol 31 (No. 6) ◽  
pp. 619-626 ◽  
Author(s):  
L. Lampíř ◽  
P. Pavloušek
Keyword(s):  
Czech Republic ◽  
Phenolic Compounds ◽  
Protocatechuic Acid ◽  
Statistical Evaluation ◽  
Hydroxybenzoic Acid ◽  
White Wines ◽  
The Czech Republic ◽  
Caftaric Acid ◽  
Grape Varieties

Phenolic compounds in grapes and wines are significantly influenced by the environment. Phenolic compounds in grapes are therefore a good reflection of terroir. The authentic wines were made from seven white grape varieties and two localities in the Czech Republic. Sádek is a location on the edge of production wine-growing in the Czech Republic and Perná is a typical wine-growing location in the Czech Republic. The profile of phenolic compounds was analysed by HPLC. Based on the statistical evaluation of these results, the following phenolic compounds were found to very well reflect the terroir conditions: protocatechuic acid, p-hydroxybenzoic acid, caftaric acid, cis-piceid, (+)-catechin and (–)-epicatechin. Since these compounds were not influenced significantly by vintage, they can be good markers of terroir.

scholarly journals Authentication of Riesling wines from the Czech Republic on the basis of the non-flavonoid phenolic compounds

2013 ◽  
Vol 31 (No. 5) ◽  
pp. 474-482 ◽  
Author(s):  
P. Pavloušek ◽  
M. Kumšta
Keyword(s):  
Czech Republic ◽  
Phenolic Compounds ◽  
Protocatechuic Acid ◽  
Geographical Origin ◽  
Hplc Method ◽  
Canonical Discriminant Analysis ◽  
Multivariate Statistical ◽  
White Wines ◽  
The Czech Republic ◽  
Hydroxybenzoic Acids

Eighteen non-flavonoid phenolic compounds comprising hydroxybenzoic acids, hydroxycinnamates, and stilbenes were analysed in 43 monovarietal wines originated from five wine-growing regions in the Czech Republic. The non-flavonoid phenolic compounds in wine were analysed by a HPLC method. The methods of multivariate statistical analysis were used for the wine discrimination on the basis of the geographical origin. The canonical discriminant analysis (CDA) proved the possibility to discriminate wines according to their provenance on the basis of the following parameters: protocatechuic acid, p-hydroxybenzoic acid, caftaric acid, p-coutaric acid, trans-resveratrol, and cis-resveratrol. On the basis of statistical analyses, 95.4% of the wine samples were correctly classified. The results therefore indicate that the non-flavonoid phenolic compounds can be used to discriminate the geographical origin of white wines.

scholarly journals Varietal differentiation of white wines on the basis of phenolic compounds profile

2013 ◽  
Vol 31 (No. 2) ◽  
pp. 172-179 ◽  
Author(s):  
L. Lampíř
Keyword(s):  
Phenolic Compounds ◽  
Protocatechuic Acid ◽  
Syringic Acid ◽  
Hplc Method ◽  
Hydroxycinnamic Acids ◽  
Analysis Method ◽  
White Wines ◽  
The Czech Republic ◽  
Grapevine Variety ◽  
Hydroxybenzoic Acids

The authenticity of grapevine varieties is a very important topic in the Czech Republic, where varietal wines is very important for wine drinkers. The wines from 7 grapevine varieties were investigated. Sixteen phenolic compounds belonging among hydroxybenzoic and hydroxycinnamic acids, stilbenes, and flavan-3-ols were analysed by HPLC method. The aim of this study was to find markers of varietal origin of wines among the phenolic compounds studied. The analytical parameters obtained were evaluated for this purpose by CVA (canonical varietal analysis) method. It proved to be successful in detecting the following grapevine variety authenticity markers: hydroxycinnamic acids (i.e. p-coutaric acid and caftaric acid), hydroxybenzoic acids (protocatechuic acid and syringic acid), and flavan-3-ols <br />((&ndash;)-epicatechin and (+)-catechin). &nbsp;

scholarly journals A New Noriridoid and Six Phenolic Compounds from Rhopalocnemis phalloides

2018 ◽  
Vol 13 (12) ◽  
pp. 1934578X1801301 ◽  
Author(s):  
Nguyen Quang Hung ◽  
Nguyen Thi Luyen ◽  
Nguyen The Cuong ◽  
Tran Huy Thai ◽  
Nguyen Thanh Tung ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Phenolic Compounds ◽  
Gallic Acid ◽  
Protocatechuic Acid ◽  
Inhibitory Effect ◽  
Spectroscopic Methods ◽  
Hydroxybenzoic Acid ◽  
Nitric Oxide Production ◽  
Oxide Production ◽  
The Family

A rare noriridoid and six known phenolic compounds were isolated from the parasite plant Rhopalocnemis phalloides. Using spectroscopic methods, these compounds were identified as 10-acetoxy- cis-2-oxabicyclo[4.3.0]nonan-7-en-3-one (1), p-hydroxybenzoic acid (2), protocatechuic acid (3), gallic acid (4), coniferyl aldehyde (5), l- O-trans-cinnamoyl-β-D-glucoside (6), and coniferin (7). The noriridoid compound is the first reported from the family Balanophoraceae. Of the isolated compounds, coniferyl aldehyde had the strongest inhibitory effect on nitric oxide production (IC50 = 8.24 μM).

scholarly journals Online grocery shopping: the customers´ perspective in the Czech Republic

Equilibrium ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 679-695
Author(s):  
Ottó Bartók ◽  
Vratislav Kozák ◽  
Radka Bauerová
Keyword(s):  
Czech Republic ◽  
Questionnaire Survey ◽  
Quantitative Research ◽  
Online Shopping ◽  
Statistical Evaluation ◽  
Value Added ◽  
Chi Square ◽  
The Czech Republic ◽  
Correlation Test ◽  
Chi Square Test

Research background: Online shopping is becoming popular among most customers thanks to quickness and easy shopping, and also due the COVID pandemic. Companies are aware of the great interest of customers and, as a consequence, e-commerce is expanding. There has been a significant increase in online grocery purchases due to economic growth in the past few years. Online shopping attracts a lot of research interest, individual authors and this is a widely discussed topic. It should be borne in mind that online purchasing of food has its own peculiarities compared to the segment of electronics or fashion from the perspective of everyday needs. Purpose of the article: The aim of the study is to analyze specific consumer behaviour in online purchasing of groceries. This study takes into account the age and purchasing preferences of online grocery purchasers. Methods: The study was conducted using quantitative research. Data (n = 171) was obtained by using a questionnaire survey done in the Czech Republic. The questionnaire survey contained 17 questions. For the statistical evaluation, Chi-square test and Pearson's correlation test were used. For the statistical evaluation, Chi-square test and Pearson´s correlation test were used. Findings & value added: The results of the study indicate that there is a relationship between the age of customers and online purchase in the grocery field. However, customers who use the         e-shop for grocery purchase are still reluctant to buy perishable goods (meat, pastries) and prefer goods that are packed directly by the manufacturer. The study sheds light on understanding the customers? purchasing behaviour and their preferences in terms of quality of service, payment terms, delivery conditions, and range of assortment.

scholarly journals Successful reintroduction of ancient grape varieties in the Czech Republic

2010 ◽  
Vol 46 (Special Issue) ◽  
pp. S19-S20
Author(s):  
O.M. Jandurová ◽  
R. Casal
Keyword(s):  
Czech Republic ◽  
The Czech Republic ◽  
On Farm Conservation ◽  
Pros And Cons ◽  
The Common ◽  
The Law ◽  
Grape Varieties ◽  
On Farm ◽  
Selection Of

&nbsp;Changes in the law have allowed Czech vintners to produce land wines from some ancient varieties. There is the chance now for the reintroduction of such varieties, when we can clearly explain the pros and cons of these varieties in comparison with the common varieties; plus be able to indicate the possible benefits for those vintners who start to plant these ancient varieties. The successful reintroduction of these ancient varieties could enlarge the selection of wines for sale, and represents an alternative way of storing genetics resources, similar to on-farm conservation. &nbsp;

scholarly journals Molecular markers of genetic variability in triticale varieties registered in the Czech Republic

2006 ◽  
Vol 54 (5) ◽  
pp. 149-154
Author(s):  
Tomáš Vyhnánek ◽  
Jan Bednář
Keyword(s):  
Czech Republic ◽  
Genetic Variability ◽  
Ssr Markers ◽  
Dna Polymorphism ◽  
Rapd Markers ◽  
Statistical Evaluation ◽  
The Other ◽  
The Czech Republic ◽  
Set Up ◽  
Rapd Method

Genetic variability was detected in 15 varieties of triticale (XTriticosecale Wittmack., 2n = 6x = 42, BBAARR) registered in the Czech Republic by means of polymorphism of DNA using the RAPD method and the SSR method. For detection we used 80 RAPD primers. The lower reproducibility of the RAPD markers was resolved by means of repeated analyses (3–4 times). On the basis of statistical evaluation a dendrogram was set up, which allows highly significantly to differentiate the varieties Kolor, Modus and Tornado. The remaining 12 analysed varieties formed 4 clusters. In addition to the RAPD markers a protocol of detection of DNA polymorphism was elaborated and optimised with microsatellite (SSR) markers. For the analyses we used 2 SSR markers (1A chromosome [Xpsp2999] and 1B chromosome [Xpsp3000]), which have been discovered in wheat (T. aestivum L.). Basing on these two SSR markers the only variety Triamant was distinguished from the clusters of the other analysed varieties.

scholarly journals Analysis of Genotype, Dam’s Litter Size and Their Interaction on Selected Productive Traits of Origin Wallachian and Sumava Sheep in the Czech Republic

2017 ◽  
Vol 65 (2) ◽  
pp. 473-479 ◽  
Author(s):  
Martin Ptáček ◽  
Jaromír Ducháček ◽  
Luděk Stádník ◽  
Milena Fantová
Keyword(s):  
Czech Republic ◽  
Growth Performance ◽  
Litter Size ◽  
Interaction Effect ◽  
Statistical Evaluation ◽  
Live Weight ◽  
The Czech Republic ◽  
Sheep Breeds ◽  
Productive Traits

The objective of the study was to evaluate interaction effect of genotype and dam’s litter size on selected productive traits of origin Czech sheep breeds. The data was provided by the Union of Sheep and Goat Breeders in the Czech Republic and contained the whole active purebred population of Wallachian and Sumava sheep in the Czech Republic in 2015. Selected productive traits with affiliation to ewes ‘reproductive and lambs’ growth performance were analyzed. Statistical evaluation of was conducted using SAS 9.3. (SAS/STAT® 9.3., 2011), GLM procedure. No significant differences were detected among Wallachian sheep regardless theirs litter size. Significantly lower total number of lambs born (−0.26 to −0.30 lamb) or reared at 14 days (−0.15 to −0.21 lamb) and 100 days (−0.24 to −0.27 lamb) of age per ewe per lambing were observed in groups of Sumava sheep born as singles and twins in comparison to triplets and quadruplets group. Similarly, Sumava sheep of single and twins reached significantly lower total number of lambs born (−0.23 to −0.34 lamb) or reared at 14 days (−0.22 to −0.33 lamb) and 100 days (−0.28 to −0.41 lamb) of age per ewe per lambing to Wallachian sheep regardless their dam’s litter size. No significant decrease of group of Sumava sheep born as triplets and quadruplets was detected in comparison to Wallachian sheep. Moreover, higher (+2.6 kg, P < 0.05) total live weight of lambs at 100 days of age from total number of lambs reared at 100 days of age per ewe was detected in group of Sumava born as triplets and quadruplets in comparison to group of Wallachian sheep born as twins. Both sheep breeds are useable in the crossing with other sheep breeds in specified conditions. Results of presented study suggested also potential aim breeding process in Sumava sheep.

scholarly journals Influence of terroir on the concentration of selected stilbenes in wines of the cv. Riesling in the Czech Republic

2012 ◽  
Vol 39 (No. 1) ◽  
pp. 38-46 ◽  
Author(s):  
M. Kumšta ◽  
P. Pavloušek ◽  
J. Kupsa
Keyword(s):  
Czech Republic ◽  
Phenolic Compounds ◽  
Geographical Origin ◽  
Hplc Method ◽  
The Czech Republic ◽  
The Subject ◽  
The Relationship ◽  
Mean Concentration

The relationship between the terroir and the quality of grapes and/or wines is used in wine authenticity determination based on geographical origin. The phenolic compounds in grapes and wines are probably related to the terroir. The subject of the study was the analysis of 43 wines of the cv. Riesling from six wine-growing sub-regions, 16 different localities and four vintages to determine the content of trans-resveratrol, trans-piceid, cis-resveratrol and cis-piceid. The analyses were performed using an HPLC method. A relationship was observed between trans-resveratrol concentration in wines and wine-growing locality. The concentration of trans-resveratrol ranged from 0.04 to 0.82 mg/l with mean concentration of 0.28 mg/l. The highest concentrations of trans-resveratrol were found in wines from the localities Podmol&iacute; (0.66 mg/l), Hostěradice (0.64 mg/l and 0.82 mg/l), Měln&iacute;k (0.59 mg/l) and Litoměřice (0.57 mg/l). Differences were also found in the relationship between trans-resveratrol and wine-growing sub-regions. Relationships between trans-piceid, cis-resveratrol or cis-piceid concentration and wine terroir were not demonstrated. The results of this study demonstrated the capability to differentiate the wine terroir using the trans-resveratrol concentrations.

scholarly journals Regional differentiations of rural villages in the Czech Republic

2012 ◽  
Vol 52 (No. 6) ◽  
pp. 273-280
Author(s):  
Z. Bednaříková ◽  
ZTrávníček ◽  
V. Vávra
Keyword(s):  
Czech Republic ◽  
Regional Development ◽  
Rural Area ◽  
Rural Areas ◽  
Regional Differences ◽  
Statistical Evaluation ◽  
Regional Differentiation ◽  
The Czech Republic ◽  
Rural Villages ◽  
The Village

Rural villages are the sole subjects in rural area which integrate all elements acting in the rural area to one functional whole. They can be therefore taken as the pivotal element of rural development. The research was done in 2004 and was based on the search for rural villages&rsquo; characteristics and exploration of the elements of regional differentiation. The project results from the presumption of difference between the rural villages given by their size, location in specific areas or on exposed roads, distance from civic centers etc. It is supposed that these characteristics have specific and significant connections with such phenomenon as the level of unemployment, the level of civic and technical facilities in villages, the activity of inhabitants and the village itself, etc. The challenge was to define problem characteristics of rural areas, which mirror significant regional differences, structure and interconnectedness of these differences and their importance for future regional development. Interdependence of particular indicators was explored by statistical evaluation.

scholarly journals The analysis of customer behaviour in accommodation services after 1989 in the Czech Republic

2008 ◽  
Vol 53 (No. 11) ◽  
pp. 518-529
Author(s):  
K. Ryglová ◽  
I. Vajčnerová
Keyword(s):  
Czech Republic ◽  
Rural Areas ◽  
Statistical Evaluation ◽  
Primary Research ◽  
The Czech Republic ◽  
Customer Behaviour ◽  
Technical Base ◽  
Contemporary Situation ◽  
The Individual ◽  
Medium Businesses

Hospitality services rank among significant realisation factors of tourism. Due to its increasing importance and high potential, tourism falls into significant elements effecting a possible development of rural areas, especially in the area of maintaining and supporting small and medium businesses. This paper deals with the issues of customer behaviour in the Czech Republic with the emphasis on hospitality services. The main purpose was to identify and analyse development changes in customer behaviour in the area of these services. The pursuit of revealing the causes of such established changes and finding possible links and connections between the individual factors was an inseparable part of it. Furthermore, we compare the materially-technical base and the existing accommodation services in the period after 1989 with the contemporary situation and we also outline new trends in customer behaviour in the Czech Republic. To reach these set targets, a secondary date analysis was conducted and after that, a primary research in the form of questionnaire survey among consumers was carried out. During the statistical evaluation of the research, the frequency of the occurrence of each question was evaluated (e.g. Information on accommodation facilities is usually found on the Internet for 64% of respondents.), then dependences among verbal features were measured and the expressed hypotheses were tested (e.g. The assumption: less than 30% people are looking for accommodation in the category from 201 CZK to 300 CZK was not rejected and so we can say that approximately 30% people find their accommodation in the category 201–300 CZK). Important results of the conducted surveys with the relevant discussions are a part of this paper.

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