scholarly journals Cyanobacterial Diversity and Physicochemical Characteristics of Thermal Springs in The Kütahya Province of Turkey

2021 ◽  
Vol 28 (2) ◽  
pp. 413-428
Author(s):  
Sevi̇lay ÖZtürk
Keyword(s):  
High Temperature ◽  
Physicochemical Properties ◽  
Physicochemical Parameters ◽  
Physicochemical Characteristics ◽  
Thermal Springs ◽  
Alkaline Ph ◽  
Average Temperature ◽  
Significant Difference ◽  
Plant Taxon ◽  
Cyanobacterial Diversity

Thermal springs are very difficult environments for organisms due to the high temperature, and physicochemical parameters. Cyanobacteria, which are photosynthetic prokaryotes, are best adapted to these environments. Kütahya is an important thermal area in Turkey. The aim of the study was to determine the cyanobacterial flora with a morphologic and ecologic approach in the 11 thermal. The physicochemical properties of the thermal springs in Kütahya province were measured. The thermal springs are alkaline (pH6) with an average temperature of 52°C. As a result, 54 cyanobacteria taxa were identified. Oscillatoriales were the predominant order in terms of taxa diversity (24 taxa) and biomass size. Statistical analyses were conducted to reveal the physicochemical properties of the thermal springs and the distribution of cyanobacteria in detail. According to these analyses, the thermal springs were classified into two main groups with a Piper. As a result of the RDA analysis under CANOCO 5.0, the total variation was 55.45455, and the first two axes explained a total of 57.43% of the variance. There was a significant difference (P0.001) in the comparison of the physicochemical parameters including pH, EC, TDS, and temperature values of the thermal springs in the Kruskal Wallis tests. Bangladesh J. Plant Taxon. 28(2): 413-428, 2021 (December)

scholarly journals Seasonal Dynamics of the Microbial and Physicochemical Characteristics of Streams and Boreholes in Uzuakoli, Eastern Nigeria

2019 ◽  
Vol 10 (2) ◽  
pp. 17
Author(s):  
Okezie Onyemaechi ◽  
Nwachukwu Ejikeme
Keyword(s):  
Dissolved Oxygen ◽  
Water Samples ◽  
Physicochemical Parameters ◽  
Stream Water ◽  
Oxygen Demand ◽  
Enterobacter Aerogenes ◽  
Physicochemical Characteristics ◽  
Potassium Nitrate ◽  
Significant Difference ◽  
Dry And Rainy Seasons

Water samples from twenty water sources (fifteen boreholes and five streams) in Uzuakoli, Nigeria were collected for the period of 6 months covering the dry and rainy seasons to assess the level of contamination. The Microbiological characteristics including heterotrophic counts, coliform counts and physicochemical parameters includes pH, turbidity, dissolved oxygen, calcium, potassium, nitrate, magnesium and phosphate were evaluated using standard methods. The total Heterotrophic counts for the borehole during the dry and rainy season were 8.3 x 103 cfu/ ml and 10.8 x 104 cfu/ ml. The Heterotrophic counts for the stream were 12.7 x 104 cfu/ ml and 17.8x 106 cfu/ ml. The frequency of occurrence of the isolates are Staphylococcus aureus 63% in borehole and 85% in streams, Pseudomonas aeruginosa 49% in boreholes and 95% in streams, Proteus sp 52% in boreholes and 97% in streams, Streptococcus sp 46% in boreholes and 53% in streams, Enterobacter aerogenes 33% in boreholes and 63% in streams, Escherichia coli 16% in boreholes and 53% in streams and Salmonella sp no percentage in boreholes and 40% in streams. The result shows a significant difference at (P≤0.05) for the bacterial isolates. The physicochemical parameters of the borehole and stream water samples during the dry and rainy seasons were determined. The temperature ranged from 25oC 32oC; pH ranged from 5.3 8.1; turbidity ranged 0.03 3.23; dissolved oxygen ranged from 3.45–7.40mg/l; biochemical oxygen demand ranged from 1.20–4.32mg/l; chemical oxygen demand ranged from 2.50–5.21mg/l; Calcium ranged from 0.81–5.64mg/l; potassium ranged from 1.01–4.22mg/l; Nitrate ranged from 1.49–4.02mg/l; magnesium ranged from 0.13–2.20mg/l; phosphate ranged from 0.51–2.01mg/l. The water samples were all within the WHO limits apart from sample from Iyi Agbozu that had temperature of 32oC.

scholarly journals A comparative study on different physicochemical properties of fresh and frozen lamb meat

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
AKM Sarwar Inam ◽  
R Ahmmed ◽  
MA Haque
Keyword(s):  
Physicochemical Properties ◽  
Texture Analysis ◽  
Physicochemical Parameters ◽  
Binding Capacity ◽  
Color Measurement ◽  
Fresh Sample ◽  
Water Binding ◽  
Moisture Contents ◽  
Lamb Meat ◽  
Significant Difference

This study described the comparison of different physicochemical parameters between fresh and frozen lamb meat. The pH measurement for fresh and frozen lamb meat did not show a significant difference. CIE L*a*b* (Commission Internationale de l'éclairage) color measurement technique was used and ∆E (distance between 2 colors) was found 5.32. On shrinkage measurement, there were significant differences (p<0.05) between the fresh and frozen meat. Frozen lamb sample showed 26.99% shrinkage compared to the fresh lamb which showed 18.09% shrinkage. The thawing loss did not show any significant difference. For texture analysis force and work were evaluated together for both fresh and frozen samples through Warner Bratzler texture analysis. The values did not show any significant difference. The absolute values of force and work were significantly different (p<0.05). Water binding capacity of the frozen and fresh sample were 56.57% and 59.27%, respectively. The moisture contents of fresh and frozen sample were 73.64% and 72.85%, respectively. Fat contents of fresh and frozen sample were 5.08% and 6.09% respectively. The study concludes that while comparing fresh and frozen lamb, only shrinkage and texture analysis showed significant difference whereas other physicochemical properties showed minor differences.J. Bangladesh Agril. Univ. 15(2): 281-288, December 2017

scholarly journals The Physicochemical Characteristics and Protein Profile of Cottage Cheese Produced by Using Crude Bromelain Enzyme Extracted from Ananas Comosus

2021 ◽  
Vol 9 (2) ◽  
pp. 578-587
Author(s):  
Sylvia Komansilan ◽  
Djalal Rosyidi ◽  
Lilik Eka Radiati ◽  
Purwadi Purwadi ◽  
Herly Evanuarini
Keyword(s):  
Physicochemical Properties ◽  
Protein Profile ◽  
Total Yield ◽  
Physicochemical Characteristics ◽  
Ash Content ◽  
Product Diversification ◽  
Cottage Cheese ◽  
Ananas Comosus ◽  
Randomized Design ◽  
Significant Difference

The utilization of an alternative enzyme for rennet substitution in cheese production offers promising potential for product diversification. In this research, the physicochemical characteristics and protein profile of cottage cheese made by using the crude extract of bromelain enzyme from Ananas comosus were evaluated. The observed variables include protein, fat, water, and ash content, as well as the cottage cheese yields, texture, meltability and protein profile. The research was conducted in a completely randomized design with 3 different bromelain concentrations at 1.5% (K1); 3% (K2); and 4.5% (K3) and each was replicated for 4 times. The obtained data were analyzed with analysis of variance (ANOVA) and followed with the Least Significant Difference (LSD) test to measure significant differences, while the protein profile of the cottage cheese was observed by using SDS-PAGE and analyzed descriptively. The different enzyme concentrations showed that the different bromelain concentrations had significant differences (P<0.01) to the overall physicochemical properties of the cottage cheese, with the protein content at 11.50 to 12.64%; fat content at 2.13 to 5.21%; water content at 56.01 to 57.65%; and ash content at 0.59 to 1.68%. The produced cottage cheese had yields at 8.46 to 10.62%; texture at 3.67 to 3.81 N; and meltability at 1.89 to 2.82%, while the protein profile observation showed different bands at 4.58 to 160.47 kDa. The research concludes that 3% bromelain concentration produces cottage cheese with the best physicochemical properties in this research, that contained 12.64±0.43% protein, 2.13±0.90% fat, 56.06±0.22% water, 0.59±0.38% ash, with cheese texture of 3.81±0.11 N and 282±0.13% meltability from a total yield of 10.62±0.06%.

scholarly journals Physicochemical Properties of a Bioceramic Repair Material - BioMTA

2020 ◽  
Vol 31 (5) ◽  
pp. 511-515
Author(s):  
Hernán Coaguila-Llerena ◽  
Victor Manuel Ochoa-Rodriguez ◽  
Gabriela Mariana Castro-Núñez ◽  
Gisele Faria ◽  
Juliane Maria Guerreiro-Tanomaru ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Setting Time ◽  
The Other ◽  
Repair Material ◽  
Alkaline Ph ◽  
Initial Setting Time ◽  
Significant Difference ◽  
Initial Setting ◽  
One Way Anova ◽  
Alkaline Material

Abstract This study aimed to assess the physicochemical properties of a repair material in the Brazilian market, BioMTA, in comparison to other two materials currently in use (Biodentine and MTA Angelus). The initial setting time was evaluated using Gillmore needle. The pH was measured with a pH-meter after 24 h, 3, 7, 14 and 21 days. The radiopacity was determined using the equivalence in millimeters of aluminum (mm Al) from digitized occlusal radiographs. Solubility was determined after immersion in water for 7 days. The data were analyzed by one-way ANOVA and Tukey tests (a=0.05). The BioMTA initial setting time (5.2 min) was lower than the other materials (p<0.05). All materials showed an alkaline pH at 21 days. At 24 h, BioMTA was the most alkaline material (p<0.05); and at 3, 7, 14 and 21 days there was no difference between BioMTA and Biodentine (p>0.05), both being more alkaline than MTA Angelus (p<0.05). The radiopacity of BioMTA (4.2 mm Al) was significantly higher compared to Biodentine (p<0.05) and lower than MTA Angelus (p<0.05). The solubility of the materials was -4.2%, -1.6% and 4.1% for BioMTA, MTA Angelus and Biodentine, respectively, with a significant difference between them (p<0.05). Therefore, it can be concluded that BioMTA displayed a shorter setting time, an alkaline pH, a higher radiopacity, and a gain in mass.

scholarly journals CHARACTERIZATION OF SERBIAN SUNFLOWER HONEYS BY THEIR PHYSICOCHEMICAL CHARACTERISTICS

2021 ◽  
Author(s):  
Nenad Popov ◽  
Milica Živkov Baloš ◽  
Sandra Jakšić ◽  
Vladimir Polaček
Keyword(s):  
Electrical Conductivity ◽  
Water Content ◽  
Physicochemical Parameters ◽  
Mass Fraction ◽  
Physicochemical Characteristics ◽  
Total Acidity ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean

Abstract: Five physicochemical parameters (water content, electrical conductivity, total acidity (pH), ash mass fraction and concentration of free acids) were analyzed in 15 sunflower honeys collected from several localities in Vojvodina, Republic of Serbia. The mean values of analyzed honeys were: water content 16.87%; concentration of free acids 27.43 mEq/kg; electrical conductivity 0.34 mS/cm; pH 3.64. The selected physicochemical characteristics of all honey samples from Serbia analyzed in this research can be considered to be within the parameters expected for sunflower honey in general. The values for ash mass fraction, electrical conductivity and concentration of free acids in all sunflower honey samples showed similar trends. High correlation was established between electrical conductivity and ash mass fraction. Statistically significant difference at p≤0.05 (p=0.017) was established only for average values of free acids concentration between honey samples originating from the localities Kanjiža and Čelarevo. All of the analyzed honeys were found to meet national and European legislation for all investigated parameters. Therefore, further research on physicochemical properties of sunflower honey is required to confirm the quality and authenticity of this product and for better understanding the benefits of this honey.

scholarly journals Quality assessment of the physicochemical properties of vermiwash produced from different sources during successive storage periods

2018 ◽  
Vol 2 (02) ◽  
pp. 52-57
Author(s):  
SIRPAUL JAIKISHUN ◽  
SHAMIKA ADONIS ◽  
ABDULLAH ADIL ANSARI
Keyword(s):  
Physicochemical Properties ◽  
Quality Assessment ◽  
Organic Farming ◽  
Crop Production ◽  
Storage Period ◽  
Physicochemical Characteristics ◽  
Cattle Dung ◽  
Fresh Sample ◽  
Significant Difference ◽  
Different Sources

Abstract. Jaikishun S, Adonis S, Ansari AA. 2018. Quality assessment of the physicochemical properties of vermiwash produced from different sources during successive storage periods. Asian J Agric 2: 52-57. Organic farming is crucial for maintaining our health together with improving quality and quantity of crop production in environmentally friendly farming practices. Vermiwash is poised to be one of the key components in organic farming and reducing the enormous amounts of pollutants from the environment. This study aims to determine the physicochemical characteristics related to vermiwash from different sources (Jamun, Neem and Grass with combination and mixed with cattle dung) during a three-month storage period with monthly assessments and compared to fresh sample. While an increase in Electrical Conductivity (EC) was seen at the first month, successive decreases were noted thereafter with a significant difference (p=0.05) being observed among the treatments (p=0.05) after three months. Total dissolved salts decreased over the storage period with significant difference being observed among the treatments and storage period revealed that at p=0.05, F (7, 21) = 3.9>2.49 Fcrit. and F (3, 21) = 3.8>2.49 respectively. Phosphorous decreased while potassium increased with T7 having the highest. Calcium showed a significant difference (p=0.05) among the treatments while magnesium fluctuated during the period but deceased at the end of the storage period. Analysis of ferrous content revealed a significant difference (p=0.05, F (7, 21) = 3.8>2.48 Fcrit.) with the time period being significantly different (p=0.05, F (3, 21) = 6.8>3.0) with an increase at the end of the storage period. Fresh form of vermiwash is best to use to obtain maximum nutrients as the general nutrient composition deteriorates over with time

scholarly journals Characterization of Serbian sunflower honeys by their physicochemical characteristics

2021 ◽  
Vol 48 (1) ◽  
pp. 1-8
Author(s):  
Milica Živkov-Baloš ◽  
Sandra Jakšić ◽  
Nenad Popov ◽  
Vladimir Polaček
Keyword(s):  
Electrical Conductivity ◽  
Water Content ◽  
Physicochemical Parameters ◽  
Mass Fraction ◽  
Physicochemical Characteristics ◽  
Total Acidity ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean

Five physicochemical parameters (water content, electrical conductivity, total acidity (pH), ash mass fraction and concentration of free acids) were analyzed in 15 sunflower honeys collected from several localities in Vojvodina, Serbia. The mean values of analyzed honeys were: water content 16.87%; concentration of free acids 27.43 mEq/kg; electrical conductivity 0.34 mS/cm; pH 3.64 and ash mass fraction 0.13%. The selected physicochemical characteristics of all honey samples from Serbia analyzed in this research can be considered to be within the parameters expected for sunflower honey in general. The values for ash mass fraction, electrical conductivity and concentration of free acids in all sunflower honey samples showed similar trends. High correlation was established between electrical conductivity and ash mass fraction. Statistically significant difference (p≤0.05) was established only for average values of free acids concentration between honey samples originating from the localities Kanjiža and Čelarevo. All of the analyzed honey samples were found to meet national and European legislation for investigated parameters

scholarly journals Seasonal Fluctuations of Physicochemical Characteristics of Selected Wetlands of Kogi State, North Central, Nigeria

2021 ◽  
pp. 30-39
Author(s):  
J. C. Ozougwu ◽  
G. U. Amana ◽  
I. Nwachukwu ◽  
C. A. Imakwu ◽  
C. U. Uzochukwu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Dissolved Oxygen ◽  
Physicochemical Parameters ◽  
Physicochemical Characteristics ◽  
Nonparametric Tests ◽  
Ion Concentration ◽  
Dissolved Solids ◽  
Monthly Basis ◽  
Hydrogen Ion Concentration ◽  
Significant Difference

This study is aimed at determining the physicochemical characteristics of selected wetlands of Kogi State. From each sampled wetlands (Abu’ja and Egwubi), surface water was collected and examined for the following physicochemical parameters: hydrogen ion concentration, electrical conductivity, total dissolved solids and temperature (0C) using Hanna meter. Dissolved oxygen was determined using dissolved oxygen meter. The data collected was analyzed using the Statistical Packages for Social Sciences version 20.0, Paleontological Statistics version 3.14 and Microsoft Office. Physicochemical parameters studied were not normally distributed from test of normality. They were compared using Man-Whitney U and Kruskal-Wallis H nonparametric tests for comparisons between two and more than two groups respectively. In Abu’ja wetland, the temperature for all the months were similar except for January and December which were significantly cooler (p < 0.05); pH was similarly constant except for January and August (p < 0.05). Dissolved solids ranged from 95 to 118 ppm with similar values between months except in March. Mean electrical conductivity ranged from 0.15 to 0.22 ms/cm. These values were similar between months in Abu’ja. Significant fluctuation occurred in dissolved oxygen on monthly basis. In Egwubi study station, temperature ranged from 20oC to 31 oC, significant difference occurred between January and May and between September and November (p < 0.05), pH was also similar between months. Dissolved solids ranged from 26 to 90 ppm. Electrical conductivity ranged from 0.2 to 0.14 ms/cm. Significant differences only occurred between April and August (p < 0.05). Dissolved oxygen was similar throughout the study period. Our result indicated that the essential minerals and other physiochemical parameters are widely distributed but some are not within the normal range of portable water for humans. Both study wetlands showed low pollution, organic waste in Abu'ja site may be handled by autochthonous bacteria and through self purification of the water body. Nutrient levels are high in wetland habitats as wetlands have rich biomes and support high level of biodiversity. The water is suitable for irrigation and livestock consumption.  The presence of the plankton is a pointer to the fact that the two wetlands possess adequate water quality for establishment of great biodiversity.

The Physicochemical Characteristics of Ibiekuma River Ekpoma, Nigeria

2012 ◽  
Vol 6 ◽  
pp. 1-6 ◽  
Author(s):  
Taiwo Crossby Omotoriogun ◽  
Osariyekemwen Osa Uyi ◽  
Ikponmwosa Nathaniel Egbon
Keyword(s):  
Physicochemical Parameters ◽  
Anthropogenic Activities ◽  
Physicochemical Characteristics ◽  
World Health ◽  
Living Standard ◽  
National Agency ◽  
Significant Difference ◽  
Health Organization ◽  
And Control ◽  
The Impact

The Ibiekuma River is an important source of livelihood to its catchment. It contributes enormously to research success and living standard of students and staffs of the Ambrose Alli University Ekpoma, Nigeria. The aim of the study was to determine the impact of anthropogenic activities on the physicochemical properties of Ibiekuma River. Twenty seven water samples were collected at four stations during the study period and analyzed accordingly. The results obtained shows that the physicochemical parameters of the river were in conformity with the World Health Organization (WHO), National Agency for Food, Drug Administration and Control (NAFDAC) and Nigerian Industrial Standard (NIS) safe limits, except for pH values which ranged from 4.69 to 4.81. The heavy metal concentrations were found to be within the limit of the guidelines prescribed by WHO and NAFDAC. Also, there was no significant difference (P > 0.05) in the concentrations of the physicochemical parameters across the four stations sampled along the Ibiekuma River. Water obtained from Ibiekuma River will be fit for domestic use, only if purified. DOI: http://dx.doi.org/10.3126/jowe.v6i0.5242 J Wet Eco 2012 (6): 01-06

Structural/Texture Evolution During Facile Substitution of Ni into ZSM-5 Nanostructure vs. its Impregnation Dispersion Used in Selective Transformation of Methanol to Ethylene and Propylene

2020 ◽  
Vol 23 ◽  
Author(s):  
Parisa Sadeghpour ◽  
Mohammad Haghighi ◽  
Mehrdad Esmaeili
Keyword(s):  
High Temperature ◽  
Physicochemical Properties ◽  
Active Sites ◽  
Catalytic Performance ◽  
Fixed Bed Reactor ◽  
Light Olefins ◽  
Isomorphous Substitution ◽  
Impregnation Method ◽  
Hydrothermal Temperature ◽  
X Ray

Aim and Objective: Effect of two different modification methods for introducing Ni into ZSM-5 framework was investigated under high temperature synthesis conditions. The nickel successfully introduced into the MFI structures at different crystallization conditions to enhance the physicochemical properties and catalytic performance. Materials and Methods: A series of impregnated Ni/ZSM-5 and isomorphous substituted NiZSM-5 nanostructure catalysts were prepared hydrothermally at different high temperatures and within short times. X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray (EDX), Brunner, Emmett and Teller-Barrett, Joyner and Halenda (BET-BJH), Fourier transform infrared (FTIR) and Temperature-programmed desorption of ammonia (TPDNH3) were applied to investigate the physicochemical properties. Results: Although all the catalysts showed pure silica MFI–type nanosheets and coffin-like morphology, using the isomorphous substitution for Ni incorporation into the ZSM-5 framework led to the formation of materials with lower crystallinity, higher pore volume and stronger acidity compared to using impregnation method. Moreover, it was found that raising the hydrothermal temperature increased the crystallinity and enhanced more uniform incorporation of Ni atoms in the crystalline structure of catalysts. TPD-NH3 analysis demonstrated that high crystallization temperature and short crystallization time of NiZSM-5(350-0.5) resulted in fewer weak acid sites and medium acid strength. The MTO catalytic performance was tested in a fixed bed reactor at 460ºC and GHSV=10500 cm3 /gcat.h. A slightly different reaction pathway was proposed for the production of light olefins over impregnated Ni/ZSM-5 catalysts based on the role of NiO species. The enhanced methanol conversion for isomorphous substituted NiZSM-5 catalysts could be related to the most accessible active sites located inside the pores. Conclusion: The impregnated Ni/ZSM-5 catalyst prepared at low hydrothermal temperature showed the best catalytic performance, while the isomorphous substituted NiZSM-5 prepared at high temperature was found to be the active molecular sieve regarding the stability performance.

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