scholarly journals Suitable Areas for Apiculture Expansion Determined by Antioxidant Power, Chemical Profiles, and Pesticide Residues in Caldcluvia paniculate Honey and Beeswax Samples

Insects ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 31
Author(s):  
Enrique Mejías ◽  
Carlos Gómez ◽  
Tatiana Garrido
Keyword(s):  
Comparative Research ◽  
Antiradical Activity ◽  
P Value ◽  
Antioxidant Power ◽  
Suitability Index ◽  
Two Samples ◽  
Chemical Profiles ◽  
Gallic Acid Equivalent ◽  
Linear Correlations ◽  
The Eu

Forty-two samples of Tiaca Honey (Caldcluvia paniculata) obtained from beehives belonging to 14 apiaries (three honey samples per apiary) were collected at the end of January near Osorno (40°34′ S, 73°8′ W), Puyehue (40°40′ S, 72°37′ W) and Frutillar 41°7′ S, 72°59′ W) covering an area of 1240 km2. They presented the highest phenol contents (0.36 mg gallic acid equivalent/kg) and antioxidant power (1.27 mM equivalent of Fe+2/g of sample), and were among the highest for antiradical activity. Phenol contents and antioxidant power (r = 0.72, p-value < 0.01) and total phenol contents and antiradical activity (r = 0.69; p-value < 0.01) displayed linear correlations. Only two beeswax samples showed residues of the pesticide fenhexamid. The respective sites (Purranque [40°55′ S, 73°10′ W] and Coligual [40°49′ S, 72°54′ W]) were the only areas located near active farms. Additionally, the m/z value 163.1091 was found as an element to identify honeys. Data were used to construct a mapped suitability index ranking for pesticide-free areas with high biological quality. The provided chemical profiles will aid local beekeepers in obtaining international certifications, particularly for the EU market. In turn, the constructed maps indicate suitable areas for apiculture expansion, while differentiated pesticide detection in honey and beeswax requires further comparative research.

scholarly journals 29.F. Workshop: The Health Systems and Policy Monitor network: reforms and health system changes in the spotlight

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
◽  
Keyword(s):  
Health Policy ◽  
Knowledge Transfer ◽  
Health System ◽  
Health Systems ◽  
Comparative Research ◽  
World Health ◽  
State Of Health ◽  
Wide Range ◽  
Cross Country ◽  
The Eu

Abstract The European Observatory established the Health Systems and Policy Monitor (HSPM) network in 2008, bringing together an international group of high-profile institutions from Europe and beyond with high academic standing in health systems and policy analysis. An important step was taken in 2011, when the Bertelsmann Health Policy Monitor, a 20-country-project with already significant overlap with the current HSPM network, merged with the Observatory's network of national lead institutions. Today, the network includes 40 institutions from 31 countries, with members participating in a wide range of activities and collaborations, such as writing the Observatory's flagship health system reports (HiTs), keeping the health policy community up-to-date on health system developments via the HSPM web platform, and contributing their expertise to reports, studies and knowledge transfer exercises co-ordinated by the Observatory for a variety of audiences, including ministries of health and international organisations such as the World Health Organization and the European Commission. In addition, network members participate in an annual meeting, hosted in a different member country every year, coming together over two days to exchange knowledge and experiences about the various health system reforms happening in their countries. The aim of these meetings is to present, discuss and start comparative research collaborations of the members that can inform policymaking. As part of a collaboration with the journal Health Policy, researchers of the HSPM network have published more than 100 articles on cross-country comparisons of policies or on ongoing nation health reforms in a special section - the Health Reform Monitor - of the journal. This workshop aims to provide the audience with an overview of the network and its expanding range of activities. An introductory presentation will briefly introduce the origins of the network and discuss its current line of work. The second presentation will provide an overview of reform trends that are routinely collected during the annual meetings as part of the “reform roundup”. The third presentation will give an example of how the network has contributed to the European Commission's State of Health in the EU initiative, by performing a 'rapid response” that informed the companion report to the State of Health in the EU country health profiles 2019. The fourth presentation is a typical example of the kind of collaborative work that the network is undertaking, i.e. involving multiple countries on a topic of shared interest. The workshop will conclude with a debate with the audience about the conceptual and methodological challenges as well as opportunities and future directions of cross-country comparative research and the HSPM network in particular. Key messages The Health Systems and Policy Monitor Network provides detailed descriptions of health systems and provides up to date information on reforms and changes that are particularly policy relevant. The Health Systems and Policy Monitor Network increasingly engages in comparative health systems research and knowledge transfer activities.

scholarly journals Antioxidant Properties and Digestive Enzyme Inhibitory Activity of the Aqueous Extract from Leafy Stems of Cissus polyantha

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Mahamad Abba Talba ◽  
David Miaffo ◽  
Sylviane Laure Poualeu Kamani ◽  
Albert Kamanyi ◽  
Sylvie Léa Wansi
Keyword(s):  
Traditional Medicine ◽  
Aqueous Extract ◽  
Inhibitory Activity ◽  
Antiradical Activity ◽  
Digestive Enzyme ◽  
Antioxidant Properties ◽  
Antioxidant Potential ◽  
Antioxidant Power ◽  
Treatment Of Diabetes

Cissus polyantha (Vitaceae) is a plant used in Cameroonian traditional medicine for the treatment of diabetes. The aims of this study were to evaluate the in vitro antioxidant and antidiabetic activities of the aqueous extract of Cissus polyantha leafy stems. The enzyme inhibitory activity was determined in vitro on α-amylase and α-glucosidase enzymes, followed by confirmative study in vivo on normal rats (oral starch and sucrose tolerance tests at doses of 111, 222, and 444 mg/kg). The ferric reducing antioxidant power and the 2,2-diphenyl-1-picrylhydrazyl (DPPH) antiradical activity of the extract were examined to evaluate the antioxidant potential of the extract. The total content of phenols, flavonoids, and tannins of the extract were also determined. The results showed an inhibitory effect of the extract on the α-amylase and α-glucosidase activities with IC50 values of 216.14 and 182.40 μg/mL, respectively. The extract at doses of 222 and 444 mg/kg induced a significant decrease in postprandial glycaemia during the starch and sucrose tolerance tests. A remarkable antiradical activity of the extract was obtained although lower than that of the standard product. The aqueous extract of leafy stems of Cissus polyantha has an interesting inhibitory activity on the α-amylase and α-glucosidase enzymes, as well as an antioxidant potential, thus validating its use in traditional medicine for the treatment of diabetes mellitus and its complications.

scholarly journals Antioxidant Activities and Total Phenolics of Acacia Honey

2009 ◽  
Vol 27 (Special Issue 1) ◽  
pp. S245-S247 ◽  
Author(s):  
M. Krpan ◽  
K. Marković ◽  
G. Šarić ◽  
B. Skoko ◽  
M. Hruškar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Antiradical Activity ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Optical Rotation ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Dpph Method ◽  
Acacia Honey

The antioxidant activities and total phenolic content of 30 samples of acacia honey from Croatian territory were analysed. Phenolics were determined by the modified Folin-Ciocalteu method, antiradical activity by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and potential antioxidant activity using the ferric reducing antioxidant power (FRAP) method. In all samples, physicochemical parameters (water content, electrical conductivity, total reducing sugars, sucrose content, acidity, hydroxymethylfurfural content, prolin content, optical rotation, diastase activity and invertase activity) were measured according to Croatian legislation and International regulatory standards. Honey can be considered as a dietary supplement as it contains some important components including α-tocopherol, ascorbic acid, flavonoids and phenolics. The composition and properties of honey are dependent on floral origins, climatic conditions of the produced area, processing and storage methods. The results of physicochemical analyses showed that all the values of investigated parameters are in agreement with the current legislation. Phenolic content ranged from 31.72 mg/kg to 80.11 mg/kg, antiradical activity expressed as IC50 ranged from 61.28% to 253.47% and antioxidant activity expressed as FRAP value from 6.95 to 142.43. A positive correlation was observed between total phenolic content and antioxidant activity, indicating that phenolic compounds are mainly responsible for the antioxidant power of acacia honey.

scholarly journals Gas Chromatography-Mass Spectrometry and Single Nucleotide Polymorphism-Genotype-By-Sequencing Analyses Reveal the Bean Chemical Profiles and Relatedness of Coffea canephora Genotypes in Nigeria

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 425
Author(s):  
Chinyere F. Anagbogu ◽  
Christopher O. Ilori ◽  
Ranjana Bhattacharjee ◽  
Olufemi O. Olaniyi ◽  
Diane M. Beckles
Keyword(s):  
Gas Chromatography ◽  
Single Nucleotide Polymorphism ◽  
Coffea Canephora ◽  
Gas Chromatography Mass Spectrometry ◽  
P Value ◽  
Polymorphism Analysis ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Chemical Profiles ◽  
Genotype By Sequencing

The flavor and health benefits of coffee (Coffea spp.) are derived from the metabolites that accumulate in the mature bean. However, the chemical profiles of many C. canephora genotypes remain unknown, even as the production of these coffee types increases globally. Therefore, we used Gas Chromatography-Mass Spectrophotometry to determine the chemical composition of C. canephora genotypes in Nigeria—those conserved in germplasm repositories and those cultivated by farmers. GC-MS revealed 340 metabolites in the ripe beans, with 66 metabolites differing (p-value < 0.05) across the represented group. Univariate and multivariate approaches showed that the ‘Niaouli’ genotypes could be clearly distinguished from ‘Kouillou’ and ‘Java’ genotypes, while there was almost no distinction between ‘Kouillou’ and ‘Java,’. Varietal genotyping based on bean metabolite profiling was synchronous with that based on genome-wide Single Nucleotide Polymorphism analysis. Across genotypes, the sucrose-to-caffeine ratio was low, a characteristic indicative of low cup quality. The sucrose-to-caffeine ratio was also highly correlated, indicative of common mechanisms regulating the accumulation of these compounds. Nevertheless, this strong correlative link was broken within the ‘Niaouli’ group, as caffeine and sucrose content were highly variable among these genotypes. These ‘Niaouli’ genotypes could therefore serve as useful germplasm for starting a Nigerian C. canephora quality improvement breeding program.

scholarly journals Phytochemicals and In-Vitro Antioxidant Activities of Aloe Vera Gel

2020 ◽  
Vol 44 (1) ◽  
pp. 33-41
Author(s):  
Md Nazim Uddin ◽  
Subrata Chandra Roy ◽  
Abdulla All Mamun ◽  
Kanika Mitra ◽  
Md Zahurul Haque ◽  
...  
Keyword(s):  
Gallic Acid ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Aloe Vera ◽  
The Other ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Aloe Vera Gel ◽  
Gallic Acid Equivalent

The phytochemicals (total phenolic, tannin, flavonoid, alkaloid, and saponin) contents in the Aloe vera gel derived from the leaf of Aloe vera (L.) Burm. f. (Synonym Aloe barbadensismiller) were extracted and their antioxidant capacity was studied by Ferric reducing antioxidant power assay (FRAP), by free radical-scavenging capability using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). Three different solvents with three different polarities CH3OH, CH3OH: HCl, CH3CH3OH: H2O were used at v/v ratio of 100, 98:2, 70:30, respectively. The acidified methanol solvent extracted the highest amounts of phytochemicals including total phenolic (4.64 mg gallic acid equivalent/g), tannin (3.84 mg tannic acid equivalent/g), alkaloid (662 mg piperine equivalent/g), and saponin (353 mg diosgenin equivalents/g) compared to the other two solvents. Similarly, in the extract with acidified methanol solvent, high level of total antioxidant activity (about 12 mg gallic acid equivalent/g) and scavenging effects expressed as 50% inhibition concentrations (IC50) for DPPH and ABTS assay were determined to be about 61 μg/mL and 371 μg/mL, respectively, which are higher than those with the other two solvents. The gel extract could be used as a potent antioxidant in medicine and food industries. Journal of Bangladesh Academy of Sciences, Vol. 44, No. 1, 33-41, 2020

scholarly journals Antioxidant poteintial and activity of aerial parts of eight medicinal plants of Uttarakhand, India

2019 ◽  
Vol 48 (2) ◽  
pp. 265-270
Author(s):  
Shakuli Kashyap ◽  
PB Rao ◽  
P Mishra ◽  
Supriya
Keyword(s):  
Radical Scavenging ◽  
Total Phenolic ◽  
Enzymatic Antioxidants ◽  
Antioxidant Power ◽  
Mean Values ◽  
Aerial Parts ◽  
Trolox Equivalent ◽  
Ferric Reducing Antioxidant Power ◽  
Dpph Radical Scavenging ◽  
Gallic Acid Equivalent

The antioxidant potential of aerial parts of eight medicinal plant species were investigated by 1,1- diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, Ferrous ion-chelating (FCA) and ferric reducing antioxidant power assays in five different concentrations and the mean values ranged from 20.39 to 83.01%, 17.21 to 48.62% and 11.70 to 21.65 μg Trolox equivalent/mg extract, respectively. Total phenolic and flavonoid contents ranged from 4.83 to 10.46 μg, gallic acid equivalent/mg extract and 1.12 to 13.11 μg quercitin equivalent/mg extract. Enzymatic antioxidants (Unit/mg fresh weight): superoxide dismutase, catalase and peroxidase values ranged from 14.86 to 49.81, 60.00 to 141.33 and 0.25 to 0.60, respectively. Considering the overall assay M. Pudica can be considered as the potent candidate for displaying antioxidant activity among the experimental plants.

scholarly journals Variations in the detection of anti-PEDV antibodies in serum samples using three diagnostic tests – short communication

2018 ◽  
Vol 66 (2) ◽  
pp. 337-342 ◽  
Author(s):  
Jan Plut ◽  
Ivan Toplak ◽  
Marina Štukelj
Keyword(s):  
Clinical Signs ◽  
Elisa Test ◽  
Diagnostic Methods ◽  
P Value ◽  
Serum Samples ◽  
Blocking Elisa ◽  
Test Kit ◽  
Two Samples ◽  
Antibody Tests ◽  
Higher Sensitivity

Over the last few years several porcine epidemic diarrhoea (PED) outbreaks have been discovered in Europe including the first PED case in Slovenia in January 2015. The aim of this study was to determine when PED virus (PEDV) infection started in Slovenia. Serum samples collected between 2012 and 2016 were tested. Three hundred and seventy-five serum samples were collected from 132 Slovenian small, one-site pig farms. Samples were tested for PEDV antibodies utilising three different serological methods: commercially-available indirect ELISA, in-house blocking ELISA test and Immunoperoxidase Monolayer Assay (IPMA) test. One hundred and seventy (45.33%) tested samples were found positive by the commercially-available ELISA test kit, and 10 (5.68%) of these 170 samples found positive were positive by the in-house blocking ELISA. Only these 10 samples were collected from a farm where clinical signs of PED infection had been observed and PEDV was confirmed by RT-PCR methodology; the other 160 samples were collected randomly. Thirty-two samples with the highest S/P value obtained with the commercial ELISA were all negative with IPMA. Reasons for the high variance in the results obtained remain unclear; more research is required to ensure higher sensitivity and specificity in terms of PEDV antibody tests and other PED diagnostic methods.

Dilemmas of measurement of economic immigration on the example of Łódzkie Voivodship

2019 ◽  
Vol 64 (6) ◽  
pp. 16-30
Author(s):  
Dorota Kałuża-Kopias ◽  
Witold Śmigielski
Keyword(s):  
Comparative Research ◽  
Population Aging ◽  
Employment Rate ◽  
The European Union ◽  
Demographic Situation ◽  
Immigrant Employment ◽  
Regional Labour Market ◽  
Economic Migration ◽  
The Eu

The aim of this study is to present the employment rate of immigrants from outside the European Union (EU) in Łódzkie Voivodship within 2010–2017. Simultaneously, some problems with measurement of economic migration on the regional labour market were emphasized. The main source of data are statistics on the number of work permits granted and registered declarations of intention of employing foreigners available at the website of the Ministry of Family, Labour and Social Policy as well as information from the Voivodship Office in Łódź. Descriptive and comparative research methods were applied. In the case of Łódzkie Voivodship, the long-term nature of immigrant employment is evi-dent, which, given the current demographic situation in the region (population aging and depopulation) can testify the ”setting up” of immigrants from outside the EU.

Synthesis and Optical Properties of Eu3+ Doped NaYF4 and KYF4 Micro/Nanocrystals

2016 ◽  
Vol 16 (4) ◽  
pp. 3857-3860 ◽  
Author(s):  
Siling Guo ◽  
Chunyan Cao ◽  
Renping Cao
Keyword(s):  
Optical Properties ◽  
Emission Spectra ◽  
Local Environment ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Sem Images ◽  
X Ray ◽  
Two Samples ◽  
Xrd Patterns ◽  
The Eu

Through a hydrothermal method, 1 mol% Eu3+ doped NaYF4 and KYF4 micro/nanocrystals have been synthesized. The materials were characterized by X-ray diffraction (XRD) patterns, field emission scanning electron microscopy (FE-SEM) images, room temperature photoluminescence (PL) excitation and emission spectra, and luminescent dynamic decay curves. The XRD analysis suggested the crystalline structures of the obtained samples. The FE-SEM images indicated the morphology and size of the obtained samples. The PL spectra illustrate the optical properties of Eu3+ in the two samples. Since it is sensitive to the local environment of the ion, the Eu3+ presents different optical properties in the NaYF4 and KYF4 materials.

scholarly journals Uneven Eufication, The Spatial Fix and the Dominance of Economic Over Social Policies

2020 ◽  
Vol 65 (2) ◽  
pp. 5-33
Author(s):  
Enikő Vincze
Keyword(s):  
Comparative Research ◽  
Capital Accumulation ◽  
Social Dimension ◽  
Economic Governance ◽  
Territorial Development ◽  
European Single Market ◽  
The Social ◽  
Spatial Fix ◽  
The One ◽  
The Eu

Abstract I am proposing to use the term EUfication to define the process of creating the EU as territory out of the geographical disparities (re)produced across the core and periphery of Europe. The article contends that EUfication is a manifestation of the phenomenon of spatial fix. In a first step, it describes the dynamics of territorial unevenness within the EU: on the one hand, by some relevant socio-economic cohesion data compiled from Eurostat indicators, and – on the other hand – through the diagnosis on spatial injustice in different Member States, as it was revealed by a comparative research conducted between 2017-2019. Furthermore, my analysis explains territorial unevenness by reconstructing the well-known historical formation of the union through a less acknowledged perspective, i.e., in the context of the changing regimes of capital accumulation. The article concludes that the theory of spatial fix allows us recognizing: the position and timing, from which and when different countries took part in the process of EUfication is a factor leading to the persistence of uneven territorial development among the European core and periphery. My contribution to theorizing on this process consists in bringing together the perspective of the spatial fix with the critical analysis of how is the social dimension paradigm overshadowed by the economic concern of capital accumulation in the socio-economic governance of the European Single Market, including the politics of territorial cohesion.

Sign in / Sign up

Export Citation Format

Share Document