scholarly journals Essential mint oil-based emulsions: preparation and characterization

2019 ◽  
Vol 70 (01) ◽  
pp. 83-87 ◽  
Author(s):  
DĂNILĂ ANGELA ◽  
ZAHARIA CARMEN ◽  
ŞUTEU DANIELA ◽  
EMIL IOAN MUREŞAN ◽  
LISĂ GABRIELA ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Quality Characteristics ◽  
Matter Content ◽  
Mentha Piperita ◽  
Stable Emulsion ◽  
Time Stability ◽  
Fatty Matter ◽  
Physical Chemical ◽  
Acidity Index

The aim of this work is to present briefly the preparation methodology of four emulsions (named M2, M3, M6, and M7) based on extracted mint oil (Mentha Piperita) and their physical-chemical properties and quality characteristics (pH, density, acidity index, peroxide index, diene and triene content, in-time stability, humidity and fatty matter content), in order to select the most recommendable emulsion to be used in textile field. This work also underlines that the most stable emulsion is M6 emulsion followed by M3 emulsion.

scholarly journals Mobility of Some High Persistent Organochlorine Compounds from Soil to Mentha Piperita

2019 ◽  
Vol 70 (1) ◽  
pp. 278-282 ◽  
Author(s):  
Diana Puiu ◽  
Mariana Popescu ◽  
Marcela Niculescu ◽  
Luoana Florentina Pascu ◽  
Toma Galaon ◽  
...  
Keyword(s):  
Food Industry ◽  
Bioconcentration Factor ◽  
Limit Of Detection ◽  
Chemical Properties ◽  
Organochlorine Compounds ◽  
Mentha Piperita ◽  
Laboratory Studies ◽  
Chemical Behavior ◽  
Physical Chemical ◽  
Persistent Organochlorine Compounds

The fate of organochlorine compounds in soil ecosystem is shaped by their physical-chemical properties and by environmental conditions. The high persistence of polychlorobiphenyls (PCBs) in soil is given by a slow degradation which varies from months to years (the half-life of PCB 28 is 10.9 years, and PCB 52, 11.2 years). Due to high lipophilicity, these carcinogenic compounds can be easily uptaken by plants and transferred to the food chain. The widespread use of medicinal plant, Mentha Piperita, in pharmaceutical and food industry represents a risk of contamination and pollution. Through laboratory studies, we worked to identify the chemical behavior in soil and plants of some PCB congeners: 28, 52, 138, 153 and 180). The compounds mobility from soil to the roots and then through plant was monitored for 5 weeks. By optimizing the analytical method the contaminants were determined from soil and plant with good recoveries and with reduced limit of detection, below 0.01 mg/kg. It was reported that usually are uptaken into the plant high chlorinated PCBs like PCB 153 and PCB 180 but this study shows that after 5 weeks of PCB application, the concentration of PCB 28, a trichlorobiphenyl, is increasing. Fortunately, calculating the bioconcentration factor (BCF) of the selected PCBs in roots, it was shown that is similar to BCF of other plants like poplar and zucchini. The obtained value of 0.2 is assessed as being low.

scholarly journals Analytical Characterisation of Original Emulsion for Cosmetic Use

2019 ◽  
Vol 70 (3) ◽  
pp. 749-752
Author(s):  
Gabriela Stanciu ◽  
Adina-Ioana Oancea ◽  
Elena Oancea ◽  
Elisabeta Chirila
Keyword(s):  
Chemical Properties ◽  
Mentha Piperita ◽  
Beneficial Effects ◽  
Reduction Potentials ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Acidity Index ◽  
Plant Mixture ◽  
Lavandula Officinalis ◽  
Physical And Chemical

The aim of the paper is to characterize an original emulsion containing a mixture of plant macerates and essences. Next the wild and/or garden plants, namely Abies sp. (leaves), Crataegus monogyna (flowers), Hypericum perforatum (flowers), Lavandula angustifolia (flowers), Lavandula officinalis (flowers), Lilium sp. (flowers), Melissa officinalis (flowers), Mentha silvestris (leaves and flowers), Mentha piperita (leaves and flowers), Origanum vulgare (leaf blooms and flowers), Pinus silvestris (buds), Populus nigra (buds) and Thymus serpillum (flowers) have been processed to prepare the studied emulsion. Some of the emulsion ingredients as the essential oils of single plant and plant mixture, or the lily flowers macerate together with the final product have been analyzed. The measurements of physical and chemical properties (refractive index, density, pH, oxidation-reduction potential, acidity index, peroxide index and iodine index) led to interesting results that could explain the curative effects on skin. The beneficial effects of new emulsion are due to the bioactive compounds that penetrate deep into the tissue and ensure regeneration. The obtained results confirm our previous findings concerning the opportunity of measurements of oxidation/reduction potentials for cosmetic mixtures regarding the antioxidant activity description.

scholarly journals Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (Solanum phureja) Crops of Colombia

2011 ◽  
Vol 2011 ◽  
pp. 1-10
Author(s):  
Nathalia Flórez-Zapata ◽  
Daniel Uribe-Vélez
Keyword(s):  
Organic Matter ◽  
Nitrogen Cycle ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Matter Content ◽  
Solanum Phureja ◽  
Rhizospheric Soil ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Physical Chemical

Nitrogen (N) plays an important role in agricultural production. This study was designed to evaluate the presence of cultivable N cycle-associated microorganisms (nitrogen-fixing bacteria—NFB, proteolytic bacteria—PR, ammonifiers—AMO, ammonium-oxidizing bacteria—AOB, nitrite-oxidizing bacteria—NOB, and denitrifiers—DEN), and their relationship with physical-chemical and agronomic soil descriptors, inSolanum phurejarhizospheric soil samples, from traditional and organic crop management farms. A cluster analysis with the physical and chemical properties of soil, allowed to identify the organic matter content as an important factor that determines the outcome of that grouping. Significant differences () between farms were found in the abundance of this groups, but correlation analysis showed that proteolytic and nitrogen fixing bacteria were the main nitrogen associated functional groups affected by soils' physical-chemical characteristics. The amount of ammonia available is affected by the agricultural management strategy, which consequently affects the NFB abundance. Finally the results showed that PR, protease activity and soil properties related with organic matter transformation has a positive relationship with productivity, which given the high organic matter content of the Andean soils being studied, we conclude that nitrogen mineralization process has an important role in the nitrogen cycle and its bioavailability in this ecosystem.

scholarly journals Physical-Chemical Properties of Poultry Rendering Meal of Whole Broiler Carcasses Stored for Different Times and Temperatures

2020 ◽  
pp. 100-107
Author(s):  
Débora A. Alves ◽  
◽  
Cristiéle L. Contreira ◽  
Suelen N. da Silva ◽  
Forgiarini Juliana ◽  
...  
Keyword(s):  
Biogenic Amines ◽  
Storage Temperature ◽  
Chemical Properties ◽  
Nutritional Composition ◽  
Rancid Odor ◽  
Physical Chemical ◽  
Randomized Design ◽  
Acidity Index ◽  
Completely Randomized Design ◽  
Storage Times

The effect of storage temperature on the physical-chemical properties of poultry rendering meals (PRM) of whole broiler carcasses was evaluated. Chemical parameters, oxidation and biogenic amines (BA) profiles were determined. A completely randomized design in a 2x4 factorial arrangement (two stored temperature: 26 ºC or 7 ºC; and four storage times: 0, 24, 48 and 72h before rendering) was used. PRM nutrient levels were within the acceptable ranges determined for animal byproducts in all treatments and they did not influence PRM acidity index or TBARS (P>0.05). The peroxide index of all PRM was higher than the acceptable limit (>10 meq/1000g) but did not cause a rancid odor. Lower total BA content was determined at 72 h of storage in PRMs from refrigerated carcasses. The nutrient composition of PRMs shows quality enough to possibly be utilized as a feedstuff. Additional studies are needed to establish the safety of these byproducts as feedstuffs. Keywords: biogenic amines, byproduct, feedstuff, nutritional composition

scholarly journals The Combined Effect of Biochar and Mineral Fertilizer on Triticale Yield, Soil Properties under Different Tillage Systems

Plants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 111
Author(s):  
Luiza Usevičiūtė ◽  
Edita Baltrėnaitė-Gedienė ◽  
Dalia Feizienė
Keyword(s):  
Soil Properties ◽  
Sandy Loam ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Mineral Fertilizer ◽  
Matter Content ◽  
Npk Fertilizers ◽  
Physical Chemical ◽  
Tillage System ◽  
Direct Drilling

This study examined the effect of study time, biochar dose, and fertilization-tillage system on the improvement of sandy loam physical-chemical properties and triticale grain yield. The soil properties (water holding capacity (WHC), wettability, moisture content (MC), organic matter content (SOM), pH, and electrical conductivity (EC) were monitored in short time intervals (after 3, 6, 12, and 24 months). Soil was tilled in two methods (shallow ploughless tillage and direct drilling), fertilized with nitrogen, phosphorus, and potassium (NPK) fertilizers, and amended with three hydrophobic pine wood biochar doses (0 t/ha; 5 t/ha; 15 t/ha). It was found that 15 t/ha biochar dose had the highest effect on the soil’s physical-chemical properties improvement (SOM increased by 33.7%, pH—by 6.84%, EC—by 23.4%, WHC—by 8.48%, and MC—by 21.8%) compared to the variants without biochar. Direct drilling, fertilization with NPK fertilizers and 15 t/ha biochar dose significantly influenced the rise of soil’s physical-chemical properties and triticale yield (3.51 t/ha).

Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra

2020 ◽  
Vol 07 (02) ◽  
pp. 1-3
Author(s):  
Amita M Watkar ◽  
Keyword(s):  
Organic Matter ◽  
Soil Quality ◽  
Agricultural Land ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Matter Content ◽  
Soil Attributes ◽  
Essential Components ◽  
Agricultural Land Management ◽  
Physical And Chemical

Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.

Chlorinated Organics in Nearshore Waters and Tributaries of the St. Clair River

1986 ◽  
Vol 21 (3) ◽  
pp. 344-350 ◽  
Author(s):  
Barry G. Oliver ◽  
Klaus L.E. Kaiser
Keyword(s):  
United States ◽  
Suspended Sediment ◽  
Waste Disposal ◽  
Large Volume ◽  
Water Samples ◽  
Chemical Properties ◽  
Low Level ◽  
Chemical Company ◽  
Physical Chemical ◽  
The Individual

Abstract The concent rat ions of hexachloroethane (HCE), hexachlorobutadiene (HCBD), pentachlorobenzene (QCB), hexachlorobenzene (HCB) and octachlorostyrene (OCS) in large volume water samples show that the major sources of these chemicals to the St. Clair River are Dow Chemical Company effluents and, to a lesser degree, Sarnia’s Township ditch which drains one of Dow’s waste disposal sites. Tributaries entering the river on both sides of the Canada/United States border contain measurable concentrations of these chemicals indicating low level contamination throughout the area. The degree of water/suspended sediment partitioning of the chemicals (Kp) was studied. Kp values for the individual chemicals changed in a manner consistent with changes in their physical-chemical properties.

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