scholarly journals Quantification of Hydrogen Peroxide in Cretan Honey and Correlation with Physicochemical Parameters

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Amalia Alygizou ◽  
Spyros Grigorakis ◽  
Panagiota Gotsiou ◽  
Sofia Loupassaki ◽  
Antony C. Calokerinos
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Antimicrobial Agent ◽  
Multivariate Statistics ◽  
Physicochemical Parameters ◽  
Honey Sample

The aim of the present study is to quantify hydrogen peroxide, generated from various types of honey produced in Crete, as a potent antimicrobial agent, and establish any correlation with their physicochemical parameters. The basic physicochemical parameters (diastase activity, HMF content, moisture, electrical conductivity, color, and sugars) of 30 authentic honey samples were determined. The concentration of hydrogen peroxide in all samples was found to be within the range 0.010–0.092 mM. The known correlation between the electrical conductivity and the color of honey was confirmed in this study. Univariate and multivariate statistics applied to the results indicate that the results can be used to discriminate honey sample groups of different botanical origins.

scholarly journals Assessment of Quality of Groundwater in Kandarvakottai and Karambakudi Areas of Pudukkottai District, Tamilnadu, India

2009 ◽  
Vol 6 (3) ◽  
pp. 898-904
Author(s):  
D. Ilangeswaran ◽  
R. Kumar ◽  
D. Kannan
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Physicochemical Parameters ◽  
Quality Standards ◽  
Physicochemical Characteristics ◽  
Total Dissolved Solids ◽  
Water Quality Standards ◽  
Standard Procedures ◽  
Groundwater Samples

Various samples of groundwater were collected from different areas of Kandarvakottai and Karambakudi of Pudukkottai District, Tamilnadu and analyzed for their physicochemical characteristics. The results of this analysis were compared with the water quality standards of ISI, WHO and CPHEEO. In this analysis the various physicochemical parameters such as pH, electrical conductivity, turbidity, total dissolved solids, Cl-, F-, SO42-, PO43-, NO3-, NO2-, CN-, Nas+, K+, NH3, Mn, Fe, Ca & Mg hardnessetc., were determined using standard procedures. The quality of groundwater samples were discussed with respect to these parameters and thus an attempt were made to ascertain the quality of groundwater used for drinking and cooking purposes in and around Kandarvakottai and Karambakudi areas.

scholarly journals Some physicochemical parameters in the surface water of mini Whuo Stream in Port Harcourt, Rivers State, Nigeria

2021 ◽  
Vol 9 (3) ◽  
pp. 039-047
Author(s):  
Edori ES ◽  
Iyama WA ◽  
Awari JO
Keyword(s):  
Electrical Conductivity ◽  
Surface Water ◽  
Physicochemical Properties ◽  
Human Activities ◽  
Physicochemical Parameters ◽  
Present Situation ◽  
Total Alkalinity ◽  
Acceptable Limit ◽  
Port Harcourt ◽  
Rivers State

The levels of physicochemical properties of Mini Whuo Stream in Port Harcourt, Rivers State, Nigeria was evaluated. The physicochemical parameters were analyzed using standard conventional procedures. The average values recorded for the physicochemical parameters during the months of investigation were in the range; temperature; 30.00±0.42-30.26±0.83oC, with all-round mean of 30.14±0.47oC, pH; 6.22±0.33-6.42±0.25 (6.29±0.29), electrical conductivity; 146.01±74.04-147.26±75.13µS/cm (146.58±74.69 µS/cm), total alkalinity; 61.63±6.37-62.20±6.41mg/L (61.91±6.41 mg/L), sulphates; 109.67±51.34-110.67±51.88mg/L (110.22±51.81 mg/L), nitrates; 12.20±2.38-12.60±2.86mg/L (12.31±2.65 mg/L), turbidity; 49.32±1.49-50.18±2.02 NTU(49.83±1.55 NTU), TDS; 74.20±36.43-75.61±37.50 mg/L (75.00±36.81 mg/L), TSS; 27.14±2.12-28.37±0.78mg/L (27.64±1.89 mg/L), chlorides; 15.17±2.90-15.66±2.70mg/L (15.34±2.65 mg/L) and salinity; 24.36±4.83-24.82±4.97mg/L (24.66±4.78 mg/L). The evaluation of the physicochemical parameters showed that the Mini Whuo Stream has been contaminated due to human activities within the stream and therefore adequate measures should be taken to forestall the present situation of the stream in order to mitigate any possible increase in deterioration of the studied physicochemical parameters in the stream beyond acceptable limit.

scholarly journals Growth and quality of soursop (Annona muricata, L.) seedlings under saline stress and hydrogen peroxide (H2O2)

2017 ◽  
pp. 1643-1649
Author(s):  
André Alisson Rodrigues da Silva ◽  
Luana Lucas de Sá Almeida Veloso ◽  
Geovani Soares de Lima ◽  
Carlos Alberto Vieira de Azevedo ◽  
Hans Raj Gheyi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Irrigation Water ◽  
Saline Water ◽  
Saline Stress ◽  
Annona Muricata ◽  
Relative Growth ◽  
Saline Water Irrigation ◽  
Sensitive Variable

This study aimed to evaluate growth and quality of soursop seedlings cv. Morada Nova, as a function of saline water irrigation and exogenous applications of hydrogen peroxide (H2O2), under greenhouse conditions. The experimental design used was randomized blocks in 5 x 5 factorial scheme, corresponding to the combination of five levels of irrigation water electrical conductivity – ECw (0.7, 1.4, 2.1, 2.8 and 3.5 dS m-1) and five concentrations of hydrogen peroxide (0, 25, 50, 75 and 100 µM). The results showed that Hydrogen peroxide concentrations were applied by soaking the seed for 24 h and by spraying on all leaves of soursop seedlings. Irrigation water above electrical conductivity of 0.7 dS m-1 negatively affected growth and quality of soursop seedlings cv. Morada Nova. The dry phytomass of root was the most sensitive variable to saline stress. Hydrogen peroxide concentrations of 31 and 100 µM led to highest relative growth rate in leaf area and dry phytomass of leaves and stem, respectively. The quality of soursop seedlings cv. Morada Nova was not compromised by using water with electrical conductivity of 3.5 dS m-1 in irrigation.

scholarly journals Effect of Metronidazole on the Growth of Vaginal Lactobacilliin vitro

2001 ◽  
Vol 9 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Jose A. Simoes ◽  
Alla A. Aroutcheva ◽  
Susan Shott ◽  
Sebastian Faro
Keyword(s):  
Adverse Effect ◽  
Hydrogen Peroxide ◽  
Antimicrobial Agent ◽  
Clinical Laboratory ◽  
National Committee ◽  
Broth Microdilution ◽  
High Concentration ◽  
Microdilution Method ◽  
Broth Microdilution Method ◽  
The Ideal

Objective:To determine whether metronidazole has an adverse effect on the growth ofLactobacillus.Methods:Hydrogen peroxide- and bacteriocin-producing strains ofLactobacilluswere used as test strains. Concentrations of metronidazole used ranged from 128 to 7000 μg/ml. Susceptibility to metronidazole was conducted by the broth microdilution method recommended by the National Committee for Clinical Laboratory Standards.Results:Growth ofLactobacilluswas partially inhibited at concentrations between 1000 and 4000 μg/ml (p= 0.014). Concentrations ≥ 5000 μg/ml completely inhibited growth ofLactobacillus. Concentrations between 128 and 256 μg/ml stimulated growth ofLactobacillus(p= 0.025 and 0.005, respectively). Concentrations of metronidazole between 64 and 128 μg/ml or ≥ 512 μg/ml did not have an inhibitory or a stimulatory effect on the growth ofLactobacilluscompared to the control.Conclusions:High concentration of metronidazole, i.e. between 1000 and 4000 μg/ml, partially inhibited the growth ofLactobacillus. Concentrations ≥ 5000 μg/ml completely suppressed the growth ofLactobacillus. Concentrations between ≥ 128 and ≤ 256 μg/ml stimulated the growth ofLactobacillus. Further investigation to determine the ideal concentration of metronidazole is needed in order to use the antimicrobial agent effectively in the treatment of bacterial vaginosis.

scholarly journals Honey drinks

2020 ◽  
Author(s):  
Leonora Adamchuk ◽  
Ján Brindza ◽  
Kateryna Lypko
Keyword(s):  
Electrical Conductivity ◽  
Antioxidant Activity ◽  
Honey Bees ◽  
Physicochemical Parameters ◽  
Alcoholic Beverage ◽  
Total Dissolved Solids ◽  
Sambucus Nigra ◽  
Carbohydrate Source ◽  
Biological Value ◽  
Varied History

Honey as a multi-component substance made by honey bees is a carbohydrate source and contains flavonoid compounds that act as antioxidants and may have ergogenic properties. As an ancient activity in Ukraine, using honey in the production of honey drinks has a long and varied history. Despite its very long tradition, only a few honey drink recipes have been preserved, so this study aims at valorizing honey-based beverages from Ukraine. Honey use in the nonalcoholic and alcoholic beverage category is diverse, performing flavor, functional, and wellness roles. Moreover, some of the accessed physicochemical parameters of elderberry (Sambucus nigra L.) tea with honey including pH, total dissolved solids, and antioxidant activity were measured in the study and the results showed increased acidity, electrical conductivity, and total mineralization of tea with honey that may indicate an improvement in the biological value of beverages when using honey.

scholarly journals Assessment of Seasonal Variation in Physicochemical Characteristics of the Soil at Gautala Reserve Forest (M.S), India

2020 ◽  
pp. 290-304
Author(s):  
Amrin Naimoddin Mirza ◽  
Satish S Patil
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Moisture Content ◽  
Physicochemical Parameters ◽  
Sandy Loam ◽  
Soil Parameters ◽  
Available Phosphorus ◽  
Available Nitrogen ◽  
Available N ◽  
Reserve Forest

The aim of study was to investigate the seasonal changes of physicochemical parameters in the soil of selected 15 spots of the Gautala reserve forest. The soil is consist of the most significant natural factors, which is created by weathering of the rocks existing in the environment. The present survey was made to study consists the physicochemical parameters in the soil of the Gautala Reserve Forest during the year 2017-18 at three seasonal intervals i.e. rainy, winter and summer seasons. The soil parameters examined were soil pH, soil texture, moisture content, bulk density, electrical conductivity (EC),organic carbon (OC), available Nitrogen (N), available Phosphorus (P), and available Potassium (K). The Gautala forest soil physical property was analyzed as sandy loam and silty loam. The pH and Organic carbon levels were low during summer and high in monsoon. The total amount of available N, P, K, electrical conductivity, water holding capacity and moisture content were maximum in monsoon and minimum in summer season. The physicochemical properties are dependent variables that play an important role in order to understand plant diversity.

scholarly journals From the Beehives: Identification and Comparison of Physicochemical Properties of Algerian Honey

Resources ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 94
Author(s):  
Mokhtar Guerzou ◽  
Hani Amir Aouissi ◽  
Ahlem Guerzou ◽  
Juris Burlakovs ◽  
Salaheddine Doumandji ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Physicochemical Properties ◽  
Water Content ◽  
Physicochemical Parameters ◽  
Ash Content ◽  
International Standards ◽  
Free Acidity ◽  
Codex Alimentarius ◽  
Index Analysis ◽  
Geographical Locations

In this study, the authors aimed at characterizing 11 Algerian kinds of honey taken from various geographical locations (beehives located at Djelfa (Medjbara and Dzaira), Laghouat, Aflou, Medea, Tiaret, Sidi bel-Abbes, Tiaret, Ain-Safra, Mostaganem, El Bayadh, and Ghardïa). The authors investigated the physicochemical parameters of these honey samples, including density, water content, electrical conductivity, ash content, pH, hydroxymethylfurfural (HMF) content, free acidity, and color. The physicochemical parameters obtained were found to be within acceptable ranges according to the international standards (Codex Alimentarius) for 9 out of 11 analyzed samples: density 1.38–1.50 g/cm3 (the same as kg/L, as commonly used for honey), water content 14.03–18.80%, electrical conductivity 0.38 × 10−1 − 6.41 × 10−1 mS/cm, ash content 0.06–0.48%, pH 3.50–4.50, free acidity 11–47 meq/kg, and color 1.1–9.2 Pfund index. Analysis of HMF content showed that only two honey samples have high values (117.7 and 90.0 meq/kg). Most samples of Algerian honey are of suitable quality according to international standards.

scholarly journals Quality and safety assessment of sheep milk and colostrum

2020 ◽  
Vol 8 (3) ◽  
pp. 202-205
Author(s):  
N. M. Zazharska ◽  
K. H. Kibets
Keyword(s):  
Electrical Conductivity ◽  
Physicochemical Parameters ◽  
Safety Assessment ◽  
Somatic Cells ◽  
Maximum Amount ◽  
Quality And Safety ◽  
Sheep Milk ◽  
Ewe's Milk ◽  
Breed Sheep ◽  
Organoleptic Parameters

Sheep’s milk contains a significant amount of protein, iron, calcium, vitamins A, B and E, as well as phosphorus and magnesium, compared to cow’s milk. The purpose of research was to identify changes in physicochemical parameters, concentrations of immunoglobulins in sheep’s milk and colostrum depending on the day of lactation. The material of the study was 73 samples of ewes milk and colostrum of the Merinolandschaf breed sheep at the private enterprise «Ukrsilgosprom» in Dnipropetrovsk region. It was found that, in terms of organoleptic parameters, the samples of sheep colostrum of the first days after lambing differed significantly from the milk of the subsequent days of lactation. The color of colostrum in the first days was creamy yellow, in all other samples it varied from white to yellowish; smell – pleasant, specific to sheep’s milk, without foreign odors. The taste of colostrum was salty. The consistency of colostrum for the first three days was viscous, especially on the first day, on the following days, it was homogeneous, without mucus, not viscous. It was found that the acidity of sheep colostrum (1–7 days of lactation) ranged from 13.8°T to 34.0°T, density – from 23.2 °A to 94.1 °A. On the second day of ewes lactation, the number of somatic cells (706 ± 221×103 cells / ml) and immunoglobulins (18.72 ± 5.19 mg/ml) decreased by almost half compared with the first day (1 293 ± 231×103 cells / ml and 37.79 ± 7.45 mg/ml, respectively). Electrical conductivity was the only indicator that increased 1.5 times on the second day of lactation (4.23 ± 0.29 mS/m). On the fifth day of lactation, fat indicators (7.13 ± 0.83 %), density (34.90 ± 1.82 °A), acidity (16.7 ± 0.8 °T) almost halved in comparison with characteristics of the first-day colostrum. On the first day after lambing, the highest acidity was observed (33.9 ± 5.8 °T), which was caused by the maximum amount of immunoglobulins (37.79 ± 7.45 mg/ml) in colostrum. After lambing the number of immunoglobulins significantly decreased, on the 6th day – 4.92 ± 1.88 mg/ml (P < 0.001 compared with the first day). The obtained results allow producers of sheep’s milk and cheese to reduce the withstand of the colostrum period and to mix a secret with collected ewe’s milk on the 5th day of lactation.

scholarly journals Assessment of Physico-Chemical Parameters of Soil of Muthannan Kulam Wetland, Coimbatore, Tamil Nadu, India

2014 ◽  
Vol 2 (3) ◽  
pp. 302-304 ◽  
Author(s):  
K Manimegalai ◽  
S Sukanya
Keyword(s):  
Electrical Conductivity ◽  
Physicochemical Parameters ◽  
Tamil Nadu ◽  
Anthropogenic Activities ◽  
Reliable Index ◽  
Chemical Parameters ◽  
Bottom Soil ◽  
Physico Chemical ◽  
Nitrogen Phosphorus

Soil serves as a more reliable index for productivity than water qualities. The productivity of any pond depends largely on the quality of bottom soil that is “store house of nutrients.” The present paper deals with the study of physicochemical parameters like organic carbon, pH, Electrical conductivity, Nitrogen, Phosphorus, Potassium of soil from Muthannan Kulam,Coimbatore (March 2013- May 2013). Analysis for the above parameters indicated contamination of the soil quality due to some anthropogenic activities. DOI: http://dx.doi.org/10.3126/ijasbt.v2i3.10769Int J Appl Sci Biotechnol, Vol. 2(3): 302-304  

Physicochemical Characterization of Organic Honeys Harvested in the North West Algerian Area

2020 ◽  
Vol 16 (9) ◽  
pp. 1421-1430
Author(s):  
Zidane Djelloul ◽  
Sid-Ahmed Benaoula ◽  
Abdeldjalil Daioui ◽  
Mohammed Z.E. El Mahi ◽  
Boumedien Meddah ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Content ◽  
Physicochemical Parameters ◽  
Free Acid ◽  
Optical Rotation ◽  
Physicochemical Characterization ◽  
Color Intensity ◽  
Specific Optical Rotation ◽  
North West ◽  
Organic Honey

Background: Consumers have become aware that the industrial methods of honey production have greatly affected the environment and product quality. Today, they want a reorientation of these production modes to obtain healthy and natural organic products. Objective: This study is conducted to evaluate, for the first time in Algeria, the physicochemical composition of organic honey’s harvest in the organic- North West Algerian area. Methods: Twenty-four samples of organic honey were harvested according to the organic beekeeping rules, by selected volunteer beekeepers in organic regions and hives, and then, they were extracted by the traditional method. Physicochemical parameters, such as pH, free acidity, density, electrical conductivity, diastase activity, carbohydrates, hydroxyl methyl furfural (HMF), water content, ash, color intensity and specific optical rotation were evaluated. Results: Mean values obtained for physicochemical parameters were: pH as 3-4.8, electrical conductivity as 0.123-1.180 mS/cm, free acid as 8-30 mEq/kg, diastase activity as 8.02-40.54 (Shade units), carbohydrates as 60.21-77.07%, sucrose as 1.04-8.97%, HMF quality as 4.67-27.63 mg/kg, water content as 14.2-19.0%, ash as 0.09-0.86%, color intensity ABS450 as 288-1467 mAU, color intensity (Pfund scale) as 0.30-137.34 mm and specific optical rotation at (-16.1)-(-3.8). The analysis indicated that organic honey samples grown in selected sites of our local area are of good quality. All of the obtained values were within the limits imposed by the present legislation (Codex Alimentarius). Conclusion: Analyzed honey samples are characterized as biological products of excellent quality with interesting nutritional properties.

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