Browsing by Author "Qayoom, Amtul"

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    Effective Process Optimization Of Indigo Rope Dyeing: A Case Study
    (Oum-El-Bouaghi University, 2016) Meraj, Shumaila; Qayoom, Amtul; Al Saeeda, N.
    Despite of limited availability and high cost of utilities, Pakistan is now declared as the second largest denim exporter country. With the advent of denim garment, it has been crucially important to face the upcoming challenges of the process optimization, cost effectiveness and utilities consumption from pre-treatment of raw yarn to quality finished denim. The focus of this study was to understand industrial scale optimization of sodium dithionite and water consumption for indigo rope dyeing process. Consumption of sodium dithionite was reduced from 16.99 gm/meter to 10.62 gm/meter from the month of July-15 till Feburaray-16 which resulted in steady utilization of indigo. Reduced utilization of chemicals decreased water requirement for post washing dyed yarn. These factors lead to comparatively cleaner, cost effective indigo dyed yarn production with required shade consistency.
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    Synergistic Effect Of Epicatechin Coated Silver Nanoparticles On Antimicrobial Activity Of Gentamicin Against Aspergillus Niger
    (Oum-El-Bouaghi University, 2017) Ikram, Farhat; Qayoom, Amtul; Ikram, Naheed; Shah, Muhammad Raza
    In present work, synergistic effect of epicatechin capped silver nanoparticles (ECAgNPs) with gentamicin was investigated in vitro and effect of ECAgNPs as a novel type of potential antimicrobial agent with gentamicin was observed. ECAgNPs with gentamicin showed remarkable antifungal activity when compared to the antifungal activities of epicatechin, gentamicin and silver nitrate. Gentamicin when combined with ECAgNPs revealed synergistic effect and this combination of ECAgNPs with gentamicin enhanced its minimum inhibitory concentration (MIC) value that is, 78.3. When antifungal activity of gentamicin, epicatechin and silver nitrate was observed then it was noticed that epicatechin didn’t possess antifungal effectiveness, whereas gentamicin and silver nitrate exhibited moderate antifungal effectiveness (MIC = 37.9) and (MIC = 35.4). Therefore, ECAgNPs induced antifungal effectiveness when combined with gentamicin.