scholarly journals Physico-chemical Parameters of Honey From Melipona mondury Smith, 1863 (Hymenoptera: Apidae: Meliponini)

2018 ◽  
Vol 10 (7) ◽  
pp. 196 ◽  
Author(s):  
Rogério Marcos de Oliveira Alves ◽  
Jacqueline Lemos Viana ◽  
Henrique de Abreu Cerqueira Sousa ◽  
Ana Maria Waldschmidt
Keyword(s):  
Electrical Conductivity ◽  
Water Activity ◽  
Reducing Sugars ◽  
Chemical Properties ◽  
Northeastern Brazil ◽  
Chemical Parameters ◽  
Technical Regulation ◽  
Mean Values ◽  
Physico Chemical

The physico-chemical properties of honey produced by the stingless bee Melipona mondury from Atlantic Forest in the state of Bahia, northeastern Brazil were evaluated. The evaluated characteristics included: water content, electrical conductivity, pH, acidity, water activity, ashes, diastase, hydroxymethylfurfural (HMF), reducing sugars and saccharose values. The honey samples showed mean values of 29.18% for moisture; 391.5 μS for electrical conductivity; pH of 4.06; 34.3 meq kg-1 for acidity; 0.73 for water activity; 0.18% for ashes; 4.05 (Goethe unit) for diastase; 1.60% for HMF; 65.42% for reducing sugars; and 2.14% of saccharose. Only the diastase activity was above the limits accepted by the Technical Regulation for Identity and Quality of Honey (Brazilian Ministry of Agriculture and Supplies). Most parameters are according to those reported in honeys from other species of stingless bees in Brazil.

scholarly journals Physico-chemical indicators and identification of selected Slovak honeys based on colour measurement

2012 ◽  
Vol 81 (1) ◽  
pp. 57-61 ◽  
Author(s):  
Jana Kasperová ◽  
Jozef Nagy ◽  
Peter Popelka ◽  
Zuzana Dičáková ◽  
Alena Nagyová ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Analysis ◽  
Water Content ◽  
Water Activity ◽  
Colour Measurement ◽  
Free Acidity ◽  
Mean Values ◽  
Chemical Indicators ◽  
Council Directive ◽  
Physico Chemical

The aim of study was to characterize 52 samples of Slovak honeys of six types (multifloral, acacia, rape, honeydew, forest and mixed). Physico-chemical analysis of honey included the water content, free acidity, pH, water activity, electrical conductivity, and hydroxymethylfurfural (HMF) content. In addition, the colour of honeys was measured using spectrophotometer and Commission Internationale de I`Eclairage method (CIE L*a*b*); four types of honey were used for identification: multifloral, acacia, rape, and honeydew. Mean values of physico-chemical indicators were as follows: water content 16–21%, acidity 6–42 mekv·kg-1, pH 3.68–5.15, water activity 0.505–0.667, electrical conductivity 0.155–1.585 mS·cm-1 and HMF content 0.17–78.5 mg·kg-1. The highest HMF content was found in forest honey with one sample above the limit established by Council Directive 2001/110/EC. The colour of Slovak honeys analysed in this study was very variable and ranged from pale yellow to dark brown. Differences of physico-chemical indicators and colour of honey samples were found to be significant (P < 0.05). The CIE L*a*b* methods can be used for identification of selected honey samples. This is the first similar study on Slovak honey.

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  

scholarly journals Physico-Chemical Properties of Biodiesel Produced from Neem Oil

2015 ◽  
Vol 47 ◽  
pp. 40-48 ◽  
Author(s):  
Prithviraj Bhandare ◽  
G.R. Naik
Keyword(s):  
Social Factors ◽  
Chemical Properties ◽  
High Viscosity ◽  
Hydroxyl Groups ◽  
Seed Oils ◽  
Neem Oil ◽  
Chemical Parameters ◽  
High Quality ◽  
Physico Chemical

Biodiesel is becoming prominent among the alternatives to conventional petro-diesel due to economic, environmental and social factors. The quality of biodiesel is influenced by the nature of feedstock and the production processes employed. High amounts of free fatty acids (FFA) in the feedstock are known to be detrimental to the quality of biodiesel. In addition, oils with compounds containing hydroxyl groups possess high viscosity due to hydrogen bonding. American Standards and Testing Materials, (ASTM D 6751) recommends FFA content of not more than 0.5% in biodiesel and a viscosity of less than 6 mm2/s. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physico-chemical parameters for their potential in biodiesel. The properties of Neem biodiesel were compared with Bureau of Indian Standards (BIS) and the fuel properties of diesel. Results showed that high amounts of FFA in oils produced low quality biodiesel while neutralized oils with low amounts of FFA produced high quality biodiesel. The quality of biodiesel from jatropha and castor oils was improved greatly by neutralising the crude oils.

scholarly journals Use of macro invertebrates to assess the quality of Seybouse River (North-East of Algeria)

2020 ◽  
Vol 10 (4) ◽  
pp. 60-66
Author(s):  
B. Affef ◽  
O. Samia ◽  
B. Mohamed
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Benthic Invertebrates ◽  
Continuous Monitoring ◽  
Physicochemical Characteristics ◽  
Chemical Parameters ◽  
North East ◽  
Physico Chemical ◽  
Different Depths

This study aimed to evaluate the physicochemical properties of water, to determine the macro-benthic invertebrates of this ecosystem. The money samples of water are taken (November - May) at three stations at different depths, including a very polluted one at downstream of the Wadi. Several physico-chemical parameters were measured (pH, electrical conductivity, turbidity, BOD5 MES, water temperature and salinity). The Bi-monthly sampling of macro invertebrates revealed the existence of 40 taxa, divided into 4 branches (amphibians, molluscs, arthropods, annelids), made up of 2344 identified individuals, and distributed according to the bathymetry, where the majority are Arthropods with 95.38%. The annelids represent 3.71%, collected mainly at the level of the strongly anthropized site C. Therefore, the distribution of the macrobenthic fauna, depends on the physico-chemical parameters, on the geographical position.Maintaining a standard water quality in this aquatic ecosystem requires continuous monitoring of its physicochemical characteristics.

scholarly journals Study of Rural Groundwater Quality in Brestea Village, Romania

2018 ◽  
Vol 1 (1) ◽  
pp. 393-398
Author(s):  
Maria Popa ◽  
Gabriela-Alina Dumitrel ◽  
Ioana Glevitzky ◽  
Mirel Glevitzky ◽  
Dorin Popa
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Chemical Properties ◽  
Chemical Parameters ◽  
Limit Values ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Nitrite Nitrate ◽  
Physical And Chemical

Abstract Water is a social requirement and an important factor in the ecological balance. Water from wells is good for direct consumption if the soil is not contaminated. The quality of drinking water is regulated by Law no. 458/2002 (transposing the Directive 98/83/EC on the quality of drinking water). The aim of this paper was to assess the physicochemical qualities of groundwaters from Brestea village, commune Denta, Timis County. The water samples were taken in 2015 from 10 functional wells. For the source whose physical and chemical parameters have exceeded the limit values, the monthly monitoring of the water quality (microbiological and physico-chemical properties) has been performed for 2 years. At the same time, the pH of the soil near the water sources was also measured. The results highlighted a good connection between the microorganisms from water and the nitrite, nitrate and ammonium content of water. The information can be further used to identify and eliminate the specific pollutants, areas and pollution sources.

scholarly journals Effect of population and organomineral fertilization on physico-chemical quality of fruits of Passiflora edulis cv. Guinezinho

2020 ◽  
pp. 308-318
Author(s):  
Bruno Alexandre Araújo de Sousa ◽  
Francisco Thiago Coelho Bezerra ◽  
Lourival Ferreira Cavalcante ◽  
Marlene Alexandrina Ferreira Bezerra ◽  
Walter Esfrain Pereira ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Reducing Sugars ◽  
Block Design ◽  
Chemical Properties ◽  
Passion Fruit ◽  
Soluble Solids ◽  
Plant Management ◽  
Physico Chemical

The phyto-technical management of crops, such as the conduction system, spatial arrangement of plants and mineral and organic fertilization are pre-harvest agronomic factors that can alter fruit quality. Therefore, this research was developed to evaluate physico-chemical attributes of yellow passion fruit as a function of population arrangement and organomineral fertilization. The experiment was carried in Entisol with free-sand texture under tropical climate with dry summer. The treatments were obtained from the combination of doses of nitrogen (92, 119, 183, 248 and 275 kg ha-1) and soil organic matter (1.3, 1.8, 2.9, 4.0 and 4.5%), through Central Box Compound, plus four additional treatments to study the effect of the number of plants per pit. The evaluations were carried on seven and ten months after the transplanting of the seedlings. A randomized block design with three replications was used. The fruits were harvested at the beginning of the yellowing of the bark and evaluated in the pulp: pH, total titratable acidity (TTA), total soluble solids (TSS), reducing sugars, non-reducing sugars and total sugars, ascorbic acid, TSS/TTA ratio, electrical conductivity and humidity. The harvesting season changed the physico-chemical properties of the passion fruit pulp and interfered with the effects of plant management and fertilization on the quality of passion fruit. For the production of the best quality passion fruit we may cultivate one, two or three plants per pit. With three plants per pit it is recommended to apply 180 kg ha-1 of nitrogen annually and raise the soil organic matter to 4%.

scholarly journals Some Physico-chemical Properties of the Habitat of West African Manatee Trichichus senegalensis along River Benue, Nigeria.

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Micheal Iwar ◽  
P O Egwumah ◽  
S. O. Olufeagba
Keyword(s):  
Electrical Conductivity ◽  
Continuous Monitoring ◽  
Chemical Properties ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
West African ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
The Mean ◽  
Total Dissolved Solid

Some physico-Chemical parameters of Manatee habitat along river Benue were conducted. The river was divided into four segments;  Makurdi, Abinsi, Gbajimba and Gbaji. In each srgment, ten (10) sample points were chosen and the following parameters ; Temperature, dissolved solid (D0), pH, Total dissolved solid,(TDS) Electrical conductivity (EC) and Biological oxygen demand (BOD) were measured. Data collected was subjected to statistical analysis.  The result indicated that there were significant differences in the pH, Electrical conductivity, and Biological oxygen demand (BOD) among the four study areas. The mean pH ranged between 6.94 to 7.09, EC ranged between 47.76 µs/cm -55.91 µs/, dissolved oxygen was between 15.82Mg/L in Makurdi to 18.50Mg/L in Abinsi, mean Temperature moved between 29.27oC in Makurdi to 34.33oC in Gbaji, the total dissolved solids ranged from 44.46 Mg/l in Abinsi to 56.74Mg/L in Gbajimba while Biological Oxygen demand (BOD) was least at Gbajimba( 3.03 Mg/L) and  Makurdi with 5.49Mg/L It is therefore suggested that continuous monitoring of the water health of the river be sustained for the survival of the west African manatee.

scholarly journals Relationship Among the Physico-Chemical Parameters of Soil and Water in Different Wetland Ecosystems

2020 ◽  
Vol 32 (7) ◽  
pp. 1681-1690
Author(s):  
Bibhu Prasad Panda ◽  
Manas Barik ◽  
Biswajita Mahapatra ◽  
Siba Prasad Parida ◽  
Aditya Kishore Dash ◽  
...  
Keyword(s):  
Research Work ◽  
Chemical Properties ◽  
Analytical Techniques ◽  
Wetland Ecosystem ◽  
Chemical Parameters ◽  
Wetland Ecosystems ◽  
Physico Chemical ◽  
Chemical Factors ◽  
Soil And Water

The quality of life in water bodies depends on their physico-chemical properties and biodiversity. These physico-chemical properties are being disturbed by continuous addition of industrial, municipal and agricultural wastes which make them unfit for different organisms. This study describes the physico-chemical factors in soil and water of all sampled wetlands and the relationship among them in wetland ecosystem. All these analysis were done by using analytical techniques as described by standard methods for examination of water and wastewater. Physico-chemical parameters of water and soil also interlinked and correlated among each other. Sometimes these parameters work as a cycle to maintain the equilibrium in the ecosystem. Higher level of research work is needed to control the source of pollution to wetlands. By controlling the physico-chemical parameters of habitat, the diversity, density and richness of various wetland dependent species can be controlled in wetland ecosystem.

scholarly journals Composting of Calotropis Gigantea Leaves Using Mix Dung of Buffalo, Cow, Goat and Sheep

2015 ◽  
Vol 10 (3) ◽  
pp. 1044-1047
Author(s):  
Mayur Shah ◽  
Devang Upadhyay ◽  
Prateek Shilpkar
Keyword(s):  
Electrical Conductivity ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Chemical Properties ◽  
Monthly Interval ◽  
Available Phosphorus ◽  
Chemical Parameters ◽  
Calotropis Gigantea ◽  
Physico Chemical ◽  
Buffalo Cow

Under shed at Biogas Research and Extension Centre, Gujarat Vidyapith, Sadara, District- Gandhinagar, Gujarat, India, a composting pit was prepared by bricks and filled with mixture of 10 kg dung (2.5 kg each of cow, buffalo, sheep and goat) and 2 kg leaves of Calotropis gigantea. The mixture was well mixed at 15 days interval and samples were analysed for various physico-chemical properties at monthly interval of composting upto 90 days. Results show that compared to values of various physico-chemical parameters before composting the values of available phosphorus, available potassium and total nitrogen increased by 2.89, 2.18 and 3.15 times whereas content of pH, electrical conductivity, chloride, total organic carbon and ratio of C:N decreased by 1.12, 4.13, 2.68, 2.38 and 8.13 times after composting. The study highlights the conversion of leaves of C. gigantea into valuable compost.

scholarly journals Evaluation of Physico-Chemical Parameters of Pouch Milk Samples Available In Butwal

2020 ◽  
Vol 3 (1) ◽  
pp. 113-124
Author(s):  
Deepak Kumar Shrestha
Keyword(s):  
Nutritional Quality ◽  
Chemical Properties ◽  
Industrial Area ◽  
Physicochemical Characteristics ◽  
Chemical Parameters ◽  
Milk Samples ◽  
Physico Chemical ◽  
Quality Of Milk ◽  
Nutritional Benefits

In the present study four different brands of pouch milk samples viz, DDC, Lumbini, Godhuli and Panchamrit commercially available in Butwal city were collected and the physicochemical characteristics including- moisture, pH, casein and fat were analyzed. It was found that all measured parameters were found as per recommended standard as compared with reported nutritional quality of milk from various countries. The main objective of the study is to determine some of the physico-chemical properties of milk sample and to provide nutritional benefits for health. All these tests were carried out in Chemistry laboratories of BMC and  DDC in ButwaI industrial Area. The value of pH ranged from 6.69 to 6.72, moisture ranged from 90.5% to 91.45%,the casein ranged from 3.12 to 3.4 and fat ranged from 2.87% to 3.06%, where Lumbini pouch milk had highest pH while Godhuli had highest moisture content and casein also while Lumbini had highest fat content. These parameters were determined and data were analyzed from period of15 March 2019 to 30 May 2019. 

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