Asian Journal of Chemical Sciences <p style="text-align: justify;"><strong>Asian Journal of Chemical Sciences (ISSN: 2456-7795)</strong> aims to publish high quality papers (<a href="/index.php/AJOCS/general-guideline-for-authors">Click here for Types of paper</a>) in all aspects of Chemical Sciences. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.&nbsp;</p> en-US (Asian Journal of Chemical Sciences) (Asian Journal of Chemical Sciences) Sat, 19 Sep 2020 07:23:58 +0000 OJS 60 Evaluation of Nutritional Fact and Study of Various Physico-chemical Parameters of Black, Green and Red Grapes Samples in the Local Fruit Market <p><strong>Aims:</strong> Aim of our study was to analyze various nutritional fact of three types of grape fruits and compare their facts in terms of consumption. The grape is one of the most edible fruit with high amount of nutritional and medicinal properties.</p> <p><strong>Study Design:</strong> Physico-chemical analysis by using various chemical analysis and instrumental methods for analysis of various grape samples.</p> <p><strong>Place and Duration of Study:</strong> Department of Applied Sciences, Chemistry section, University of Technology and Applied Sciences, Muscat, Oman. The study was performed during the May 2018 – December 2018.</p> <p><strong>Methodology:</strong> We have selected three different grapes samples from the local market for the analysis (Green grapes, Red grapes and Black grapes). Our research study includes testing of various physico-chemical parameters for nutritional fact of fruit, such as water, carbohydrates, proteins, fat, vitamin C, and different minerals. We analyzed various physic-chemical parameters.</p> <p>Results: We found that pH in the range of 3.775 – 4.14, conductivity 1.39 MS/cm – 1.553 MS/cm, titratable acidity was measured in terms of tartaric acid was found 0.712 g/100ml - 1.065 g/100ml and Brix% value 9.5% - 15.5%. Amount of water in berry was 77.964 % – 80.146 %, Ash in the range of 0.72 – 3.911 %.&nbsp; Protein 6.245 g/100ml – 7.928 g/100ml, Fiber content 1.112 % – 1.143% and good amount of potassium, magnesium, calcium, iron and zinc.&nbsp;</p> <p><strong>Conclusion:</strong> Analysis of three types of grapes we found, acidity of green grapes was highest. It might be depending upon ripening stage of berry. That are correlated to sugar (<sup>0</sup>Brix). Fiber value was very close to each other. Iron was highest in red grapes and then green grapes. Potassium, magnesium, calcium and zinc was found to higher in green grapes. Based on this green grape looks batter nutritional value.</p> Patil Pandurang N., Amani Ahmaed Al- Aamri, Zahra Abdullah Al- Rubkhi, Aida Salim Al Abri ##submission.copyrightStatement## Sat, 19 Sep 2020 00:00:00 +0000 Non-equilibrium Binding Energy Determined Using Alpha-amylase Catalysed Amylolysis of Gelatinised Starch as a Probable Generalisable Model and Importance <p><strong>Objectives: </strong>This research was undertaken to determine the non–equilibrium binding energy by calculation after substituting experimental data into derived equations, present its role distinct from energy associated with activated enzyme–substrate (<em>ES</em>) complex and ultimately elucidate the importance of binding energies.</p> <p><strong>Background: </strong>There are overwhelming pieces of evidence in the literature that binding interaction is essential for the ultimate transformation of a substrate, inhibition of vital enzymes of pathogens, covid-19 in particular. Intrinsic binding energy herein referred to as non–equilibrium binding energy and energy associated with activated <em>ES </em>are seen to be chemical in origin. Much attention seemed not to be given to theoretical approach to the determination of non–equilibrium binding energy.</p> <p><strong>Methods: </strong>Experimental approach (Bernfeld method of enzyme assay) and calculational.</p> <p><strong>Results and Discussion: </strong>The non–equilibrium translational (2.691–2.726 kJ/mol) and total electrostatic energies (2.755-3.154 kJ/mol) were &gt; than the thermal energy at 310.15 k. The interfacial distance between the bullet and target molecule was expectedly very short; the range was between 6.672 and 7.570 exp (- 12) m. This was attributed to the interaction between charged enzyme and weakly polar substrate.</p> <p><strong>Conclusion: </strong>The equations of non–equilibrium and translational energies were derivable. The binding interaction serves to fix the bullet molecule on or into the target (supra) molecule before the commencement of transition state formation. The non–equilibrium binding interactions of the bullet (drugs, substrate, <em>etc</em>) and target (receptors <em>e.g.</em> enzymes, pathogens such as Covid–19, <em>Plasmodium</em> <em>etc</em>) and the ultimate complex are likely to be stabilised against the thermal energy in furtherance of enzymatic and drug action since the electrostatic interaction energy is higher than thermal energy.</p> Ikechukwu I. Udema ##submission.copyrightStatement## Sat, 19 Sep 2020 00:00:00 +0000 Evaluation of the Distribution of Heavy Metals in Soil around Electronic Dumpsite in Owutu, Ikorodu, Lagos State, Nigeria <p>The soil from antiquity has been the primary repository of all wastes. Millions of tons of toxic e-waste from a variety of sources annually find their way into dumpsites. The assessment of the levels of Pb, Cr, Cd, Zn and Cu in soil from Owutu dumpsite in Ikorodu, Lagos State was performed using Atomic Absorption Spectroscopy. Control samples were also taken at 1 km away from the location. At the dumpsite, the concentration of Pb, Cr, Cd, Zn and Cu were found to range between 0.85 to 2261.15 mg/kg, 8.05 to 111.2 mg/kg, 1.05 to 46.6 mg/kg, 310.45 to 5443.7 mg/kg and 160.3 to 8246.3 mg/kg while that of the control sites range between 52.45 to 72.05 mg/kg, 18.1 to 20.80 mg/kg, 0.25 to 3.2 mg/kg, 126.55 to 140.7 mg/kg and 181.45 to 185.85 mg/kg respectively. Heavy metal concentrations at the dumpsite were found to be higher than those at the control site and that of the regulatory bodies. Assessment of the contamination level of the soils at the dumpsite was done by calculating the metal contamination factor and Geoaccumulation index. The results revealed that there is gross contamination of the dumpsite with heavy metals due to the e-waste disposed on the site.</p> Henry Olawale Sawyerr, Francis Olusegun Oladeji ##submission.copyrightStatement## Mon, 21 Sep 2020 00:00:00 +0000