scholarly journals Polyphenol Fingerprinting Approaches in Wine Traceability and Authenticity: Assessment and Implications of Red Wines

Beverages ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 75 ◽  
Author(s):  
Laurentiu Palade ◽  
Mona Popa
Keyword(s):  
Liquid Chromatography ◽  
Nutritional Quality ◽  
Red Wine ◽  
Red Wines ◽  
Qualitative And Quantitative Analysis ◽  
High Importance ◽  
Qualitative And Quantitative ◽  
Authenticity Assessment ◽  
And Storage

Like any other food/feed matrix, regardless of the employed analytical method, wine requires authentication strategies; a suitable qualitative and quantitative analysis represents the fingerprint which defines its identity. Until recently, fingerprinting approaches using liquid chromatography applications have been regarded as an effective tool for the assessment of wines employing polyphenol profiles. These profiles are of considerable importance for grapes and wines as they influence greatly the color, sensory, and nutritional quality of the final product. The authenticity and typicity characters are fundamental characteristics, which may be evaluated by the use of polyphenol fingerprinting techniques. Under these conditions, the evolution of polyphenols during the red wine elaboration and maturation processes shows a high importance at the level of the obtained fingerprints. Moreover, the environment factors (vintage, the area of origin, and variety) and the technological conditions significantly influence wine authenticity through the use of polyphenol profiles. Taking into account the complexity of the matter at hand, this review outlines the latest trends in the polyphenol fingerprinting of red wines in association with the transformations that occur during winemaking and storage.

scholarly journals Analysis of content of phenolic acids in Lithuanian propolis using high-performance liquid chromatography technique

Medicina ◽  
2009 ◽  
Vol 45 (9) ◽  
pp. 712 ◽  
Author(s):  
Kristina Ramanauskienė ◽  
Arūnas Savickas ◽  
Asta Inkėnienė ◽  
Konradas Vitkevičius ◽  
Giedrė Kasparavičienė ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Phenolic Acids ◽  
High Performance ◽  
Raw Material ◽  
Deciduous Trees ◽  
Analysis Method ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative

The aim of the study was to analyze phenolic acids in Lithuanian propolis and to compare it with the composition of propolis in neighboring countries (Latvia and Poland) according to the predominant flora in the collecting places. The study was also aimed at the evaluation of the effect of the layer thickness (mm) of the harvested propolis on the quality of the raw material in determining the amount of phenolic acids. Materials and methods. The object of the study was propolis collected in Lithuania, Poland, and Latvia in late July of 2006 and 2007. The qualitative and quantitative analysis of phenolic acids was performed using the high-performance liquid chromatography technique (HPLC). Results. The results of the study showed that the quantitative and qualitative composition of phenolic acids in propolis depended on the plants from which the bees in the area collected substances for the raw material of propolis. The predominant phenolic acids were determined to be ferulic and coumaric acids, and they may be among the main indicators of quality in the standardization of the raw material and preparations of propolis. Conclusion. We created an HPLC-based analysis method for the identification and quantification of phenolic acids in propolis. The variety of phenolic acids in propolis depends on the vegetation predominating in the harvesting area. Studies have shown that the highest amount of phenolic acids is observed in propolis harvested in areas characterized by the predominance of deciduous trees and meadows. Results have also shown that ferulic and coumaric acids are the predominant phenolic acids in propolis. The thickness of the layer of the collected propolis in the hive also influences its chemical composition.

scholarly journals Underwater Image Restoration via Non-Convex Non-Smooth Variation and Thermal Exchange Optimization

2021 ◽  
Vol 9 (6) ◽  
pp. 570
Author(s):  
Qingliang Jiao ◽  
Ming Liu ◽  
Pengyu Li ◽  
Liquan Dong ◽  
Mei Hui ◽  
...  
Keyword(s):  
Image Restoration ◽  
Qualitative And Quantitative Analysis ◽  
Formation Model ◽  
High Quality ◽  
Thermal Exchange ◽  
Qualitative And Quantitative ◽  
Smooth Variation ◽  
Underwater Image ◽  
Dark Channel

The quality of underwater images is an important problem for resource detection. However, the light scattering and plankton in water can impact the quality of underwater images. In this paper, a novel underwater image restoration based on non-convex, non-smooth variation and thermal exchange optimization is proposed. Firstly, the underwater dark channel prior is used to estimate the rough transmission map. Secondly, the rough transmission map is refined by the proposed adaptive non-convex non-smooth variation. Then, Thermal Exchange Optimization is applied to compensate for the red channel of underwater images. Finally, the restored image can be estimated via the image formation model. The results show that the proposed algorithm can output high-quality images, according to qualitative and quantitative analysis.

scholarly journals International Real Estate Review

2006 ◽  
Vol 9 (1) ◽  
pp. 153-166
Author(s):  
Kiran Kumar Naidu ◽  
◽  
Chris Heywood ◽  
Richard Reed ◽  
◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Real Estate ◽  
Human Resources ◽  
Business Processes ◽  
Qualitative And Quantitative Analysis ◽  
Business Process Outsourcing ◽  
Qualitative And Quantitative ◽  
Corporate Real Estate ◽  
Analyze Data

Business process outsourcing (BPO) is transforming Western companies’ corporate real estate (CRE) requirements. When business processes move to a developing country there are consequences for that country’s CRE practice. This paper considers the effects of western BPO on Indian CRE. Qualitative and quantitative analysis was used to analyze data from a survey of professionals operating in Indian CRE. Location issues, quality of workspace, and the availability of human resources were identified as important in establishing BPO activities in India. Suburban, and campus or built-to-suit facilities, were increasingly preferred locations and styles of workplace that were transforming Indian CRE practice. Also, the effect of western BPO was impacting on the types of CRE services being offered. With the continuing growth in BPO to ‘secondary cities’ the transformational effects on local CRE practice are likely to spread and further transform CRE practice in India.

scholarly journals Descriptor Fingerprints and Their Application to Red Wine Clustering and Discrimination

2017 ◽  
Vol 4 (1) ◽  
pp. 29-33
Author(s):  
I.P. Bangov ◽  
M. Moskovkina ◽  
B.P. Stojanov
Keyword(s):  
Clustering Algorithm ◽  
Red Wine ◽  
Test Results ◽  
Red Wines ◽  
Wine Quality ◽  
Laboratory Parameters ◽  
Analytical Test

Abstract The investigation was performed to test the potentials of the fingerprint clustering algorithm for a set of 1599 red wines in relation to some wine properties, comprised in the notion “wine quality”. We have obtained a distribution of the wines into different clusters as a result. Each cluster was composed of wine-objects with similar values of laboratory parameters and with a wine quality certificate. A correlation between the. quality of wines (a sensory taste factor) and the phisicochemical descriptors (laboratory analytical test results data) was observed and analyzed.

scholarly journals Qualitative and quantitative analysis of gallic acid in Alchemilla vulgaris, Allium ursinum, Acorus calamus and Solidago virga-aurea by chip-electrospray ionization mass spectrometry and high performance liquid chromatography

2010 ◽  
Vol 8 (3) ◽  
pp. 530-535 ◽  
Author(s):  
Dumitru Condrat ◽  
Cristina Mosoarca ◽  
Alina Zamfir ◽  
Florin Crişan ◽  
Maria Szabo ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Quantitative Analysis ◽  
Gallic Acid ◽  
High Performance ◽  
Aerial Part ◽  
Acorus Calamus ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
Allium Ursinum

AbstractThis study presents the results obtained from qualitative and quantitative analysis of gallic acid from hydro-alcoholic extracts (methanol, ethanol) of plants from Plantae regnum. Plant qualitative analysis was performed using a novel mass spectrometric (MS) method based on fully automated chip-nanoelectrospray ionization (nanoESI) high capacity ion trap (HCT) while quantitative analysis was carried out by high performance liquid chromatography (HPLC). These methods were applied to Alchemilla vulgaris — common lady’s-mantle (aerial part), Allium ursinum — bear’s garlic (leaves), Acorus calamus — common sweet flag (roots), Solidago virga-aurea — goldenrod (aerial part). Obtained results indicated that methanol extracts (96%, 80%) have a gallic acid content ranging between 0.0011–0.0576 mg mL−1 extract while the ethanol extracts (96%, 60%) exhibit a gallic acid concentration that varies between 0.0010–0.0182 mg mL−1 extract.

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