scholarly journals The exploration of the crystal nucleation parameters and physico-chemical analysis of a single crystal: 2-amino-4,6-dimethoxypyrimidinium hydrogen (2R,3R)-tartrate 2-amino-4,6-dimethoxypyrimidine

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 15710-15721
Author(s):  
Paavai Era ◽  
RO. MU. Jauhar ◽  
V. Viswanathan ◽  
M. Madhangi ◽  
G. Vinitha ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Single Crystal ◽  
Chemical Properties ◽  
Crystal Nucleation ◽  
Nucleation Parameters ◽  
Physico Chemical

This paper discusses the structural orientations and the physico-chemical properties of a single crystal of 2-amino-4,6-dimethoxypyrimidinium hydrogen (2R,3R)-tartrate 2-amino-4,6-dimethoxypyrimidine (2ADT).

scholarly journals IN VITRO STUDY OF PHYSICO-CHEMICAL PROPERTIES OF THE «BALANCED SALT SOLUTION − H2O» SYSTEM WITH THE PURPOSE OF DEVELOPMENT OF TREATMENT, REHABILITATION AND PREVENTIVE MEASURES IN OPHTHALMOLOGY

2021 ◽  
Author(s):  
O. Kofanova ◽  
К. Tkachuk ◽  
O. Kofanov ◽  
M. Saveliev ◽  
O. Tverda ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Mathematical Models ◽  
Salt Solution ◽  
Dynamic Viscosity ◽  
Preventive Measures ◽  
Chemical Properties ◽  
In Vitro Study ◽  
Vitro Study ◽  
Physico Chemical

The research is devoted to the in vitro study of the behavior of the model system «irrigation balanced salt solution BSS − H2O» in order to further develop treatment, rehabilitation and prevention measures for patients with ophthalmic diseases. The aim of the investigation is the experimental determination and analysis of physico-chemical properties of irrigated balanced salt solution, the study of its behavior in the aquatic environment to model changes in the characteristics of intraocular fluid and further development of rehabilitation and preventive measures for ophthalmic patients. Materials and Methods. The study used methods of physico-chemical analysis, in particular, densimetry and viscosimetry of model systems containing BSS for intraocular use and double-distilled water in different volume ratios. The density of the system was determined pycnometrically (20.00 0С ± 0.05 0С; 101.3 kPa); the correction for weight loss of bodies in the air has been taken into account. Viscosity was measured under the same conditions with an Ostwald viscometer. Statistical analysis and evaluation of the reliability of the results were performed using such software products as MS Excel 2007, Google Spreadsheets, SPSS Statistics. Results. Approximate mathematical models of the dependences of density and kinematic and dynamic viscosity on the composition of the multicomponent system «BSS – H2O» were obtained with quite high coefficients of determination. Statistical significance and adequacy of model selection were tested by Student's criterion at a significance level of 5 %. To develop therapeutic, prophylactic and rehabilitation measures, mathematical models of kinematic and dynamic viscosity dependences on the density of the «BSS – H2O» system, measured under the same conditions, were built. The models also have high coefficients of determination. Conclusion. The in vitro physico-chemical analysis of the system «BSS – H2O», as well as the obtained approximate mathematical models can be used to predict possible changes in the characteristics of irrigated balanced salt solution during its long stay in the patient's eye.

scholarly journals Physico-Chemical Analysis of Fresh and Fermented Fruit Juices Probioticated with Lactobacillus casei

2013 ◽  
Vol 1 (3) ◽  
pp. 127-131 ◽  
Author(s):  
Bathal Vijaya Kumar ◽  
Mannepula Sreedharamurthy ◽  
Obulam Vijaya Sarathi Reddy
Keyword(s):  
Antioxidant Activity ◽  
Chemical Analysis ◽  
Lactobacillus Casei ◽  
Health Benefits ◽  
Chemical Properties ◽  
Titratable Acidity ◽  
Fruit Juices ◽  
Time Intervals ◽  
Standard Methods ◽  
Physico Chemical

The objective of this study was to find out the suitability of different fruit juices for probiotication by using Lactobacillus casei. Phyto-chemical analysis of different fruit juices (mango, sapota, grape and cantaloupe) were carried out using the standard methods. Carbohydrates, flavoniods, tannins, glycosides were present and alkaloids and saponins were absent in all the above fruit juices. Further analysis by TLC and DPPH methods indicated good antioxidant activity in all the fruit juices except for cantaloupe juice. Probiotication of fruit juices with L. casei, decreased pH and increased the titratable acidity within 72 h. Physico-chemical properties were also determined at different time intervals (24, 48 and 72 h) of probiotication. Based on the above results, it was inferred that the beverage prepared from the probiotication of fruit juices with L. casei could be useful in providing health benefits to the consumers.DOI: http://dx.doi.org/10.3126/ijasbt.v1i3.8301 Int J Appl Sci Biotechnol, Vol. 1(3) 2013 : 127-131

scholarly journals Physico-chemical study of Panchvalkal mentioned in Himvan Agada: An anti — Poisonous formulation in Ayurveda

2021 ◽  
Vol 7 (2) ◽  
pp. 114-120
Author(s):  
Parvesh Kumar ◽  
Rudramani Deepak ◽  
Dharni Dhar Singh ◽  
Rajeev Ranjan
Keyword(s):  
Chemical Analysis ◽  
Emergency Management ◽  
Chemical Properties ◽  
Chemical Study ◽  
Stem Bark ◽  
Phytochemical Analysis ◽  
Physico Chemical

is one among the of Ayurveda, which deals with all cases of poisoning.In all these situations, is of paramount importance because it is a condition that requires emergency management. is one among them. has grouped the stem bark of five plants viz. ( Linn.), ( Benth.), Linn) () and Roxb.) as ingredients in (the stem bark of five trees). Itcontains 14 ingredients and indicated for and : To analyze the Physico-chemical, phyto- chemical properties.: Procurement of Raw drugs was later subjected to Physico-chemical analysis and preliminary phytochemical analysis.: All the parameters, assays are done, upon which the standards of Pharmacopoeia depend.

scholarly journals Some quality parameters of mustards from the Romanian market

2018 ◽  
Vol 29 (2) ◽  
pp. 126-129
Author(s):  
Cristina Damian ◽  
Ana Leahu ◽  
Sorina Ropciuc ◽  
Mircea-Adrian Oroian
Keyword(s):  
Statistical Analysis ◽  
Chemical Analysis ◽  
Rheological Model ◽  
Dry Matter ◽  
Chemical Properties ◽  
Quality Parameters ◽  
Matter Content ◽  
Dry Matter Content ◽  
Physico Chemical ◽  
Linear Correlations

Abstract Five commercial mustards, made by different manufacturers, were studied to examine their physico-chemical properties and to establish relationships between those properties. Physico-chemical analysis revealed distinct differences between the mustards in the dry matter and extract contents and smaller differences in the protein, fat and ash levels. Two of the investigated mustards did not satisfy the requirements of the relevant Romanian standard regarding dry matter content. Statistical analysis of the results showed significant linear correlations between the dry matter, fat, protein and ash contents of mustards and some parameters of rheological model.

scholarly journals Characterization and physico-chemical analysis of essential oil of Cymbopogon citratus leaves

2018 ◽  
Vol 11 (1) ◽  
pp. 74-81
Author(s):  
R.F. Olayemi ◽  
I.O. Jawonisi ◽  
J.A. Samuel
Keyword(s):  
Chemical Analysis ◽  
Essential Oil ◽  
Essential Oils ◽  
Chemical Properties ◽  
Acid Value ◽  
Industrial Applications ◽  
Point Of View ◽  
Gas Chromatography Mass Spectrometry ◽  
Cymbopogon Citratus ◽  
Physico Chemical

The genus Cymbopogon is important from the point of view of their essential oils. Essential oils from these species are widely used in flavours, fragrances, cosmetics, soaps, detergents and perfumery owing to their typical lemon-like aroma. Essential oil of Cymbopogon citratus was extracted by hydrodistillation and characterized using Gas chromatography/mass spectrometry (GC-MS) and Fourier Transform Infrared (FTIR).The oil was also subjected to physico-chemical analysis, the physical and chemical properties evaluated were Boiling point (74oC), Specific gravity (0.8960), Refractive index (1.4838) and pH (6.00) at 25oC. Saponification value(109.76) and Acid value (0.55) mg KOH/g oil. Iodine value (100g of I2/g oil) 105, Ester value (189.21), Residue on evaporation (10%) at 100oC.The chemical composition of the essential oil analyzed by GC-MS showed citral (31.1%), β-Myrcene (14.2%), citronellal  (9.8%), limonene  oxide (7.7%), eraniol (7.3%) and linalool (6.2%) as the major compounds. The FTIR spectra revealed the presence of n-alkane, conjugated alkene, primary amide, amine, aldehyde, primary and secondary alcohols. The results obtained from the physico-chemical parameters, and functional groups identified by FTIR as well as the compounds identified by GC-MS revealed that the oil has medicinal and nutritive values as well as industrial applications in the pharmaceutical, perfumery and cosmetic industries .Keywords: Characterization, Citral, Cymbopogon citratus, Essential oil, FTIR, GC-MS

scholarly journals Tuber yield, morphology, and chemical properties variability of sweet cassava germplasm

2021 ◽  
Vol 6 (2) ◽  
pp. 77
Author(s):  
Tinuk Sri Wahyuni ◽  
Kartika Noerwijati
Keyword(s):  
Chemical Analysis ◽  
Plant Height ◽  
Tuber Yield ◽  
Amylose Content ◽  
Starch Content ◽  
Chemical Properties ◽  
Research Station ◽  
Physico Chemical ◽  
Sweet Cassava ◽  
Cassava Varieties

In Indonesia, the superior sweet cassava varieties are still limited due to the situation on which the majority of the superior varieties -bitter varieties- are used as industrial raw material until now. Therefore the availability of new high yielding of sweet cassava varieties is still needed. Assembling varieties requires the support of germplasm that has identified its superiority. The research objective was to evaluate tuber yield, morphology, and physico-chemical properties of cassava tuber from sweet cassava germplasm. A total of 75 accessions were characterized in Jambegede research station in February-November 2016, using Randomized Block Design. Variables observed included plant height, number of plants at harvest, harvest index, number and weight of tuber yield, and starch content. Physico-chemical analysis of tubers was carried out on 15 accessions with high tuber yields. Plant height at harvest was 393.2 cm in average. There were 10 accessions of sweet cassava with high fresh tuber yields ranging from 36.61 ton.ha-1 to 61.64 ton.ha-1, i.e MLG 10366, MLG 10365, MLG 10318, MLG 10197, MLG 10325, MLG 10341, MLG 10018, MLG 10279, MLG 10298, and MLG 10263. Physico-chemical analysis showed that the average of HCN content was 9.40 ppm, moisture content of 59.5 %, starch content of 28.8 % wb, and amylose content of 11.0 % wb. The bitter cassava with steamed tuber texture not cracked had relatively higher levels of HCN and water content, which was 82.88 ppm and 74.8 %, while the starch and amylose content was relatively lower (15.8 % wb and 5.5 % wb).

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