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Browsing by Cluster "Chemicals"

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Active nanocomposite films based on low density polyethylene/organically modified layered bouble hydroxides/thyme oil to retain retail shelf life and quality of hass avocados

Author: Kesavan Pillai, Sreejarani ; Sivakumar, D ; Ray, Suprakas S ; Obianom, P ; Eggers, Sharon K ; Mhlabeni, T Date: Dec 2020 In this study, the ability of an active film containing volatile bioactives in post-harvest disease control and preservation of quality in avocados is explored as a non-traditional treatment method. Antimicrobial transparent flexible trilayer ... Read more
Active nanocomposite films based on low density polyethylene/organically modified layered bouble hydroxides/thyme oil to retain retail shelf life and quality of hass avocados

Author: Kesavan Pillai, Sreejarani ; Sivakumar, D ; Ray, SS ; Obianom, P ; Eggers, SK ; Mhlabeni, T Date: Nov 2020 In this study, the ability of an active film containing volatile bioactives in post-harvest disease control and preservation of quality in avocados is explored as a non-traditional treatment method. Antimicrobial transparent flexible trilayer ... Read more
Adsorption of NH3 and NO2 molecules on sn-doped and undoped ZnO (101) surfaces using density functional theory

Author: Dima, Ratshilumela S ; Tshwane, David M ; Shingange, Katekani ; Modiba, Rosinah ; Maluta, NE ; Maphanga, Rapela R Date: 2022 The adsorption and interaction mechanisms of gaseous molecules on ZnO surfaces have received considerable attention because of their technological applications in gas sensing. The adsorption behavior of NH3 and NO2 molecules on undoped and ... Read more
Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry

Author: Makhari, A ; Hawes, Nomashaka BN ; Mturi, George AJ ; Ojijo, Vincent O Date: Jul 2021 Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used ... Read more
Anti-mycobacterial peroxides: A new class of agents for development against tuberculosis

Author: Van der Westhuyzen, Christiaan W ; Haynes, J ; Panayides, Jenny-Lee ; Wiid, I ; Parkinson, C Date: 2020 Background: With few exceptions, existing tuberculosis drugs were developed many years ago and resistance profiles have emerged. This has created a need for new drugs with discrete modes of action. There is evidence that tuberculosis (like ... Read more
Antibiotic 3D printed Materials for healthcare applications

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Sadiku, ER ; Motsoeneng, TS ; Mtibe, Asanda ; Tsipa, PC Date: May 2020 Since its introduction in the past 25 years, three-dimensional (3D) printing has been a major research topic owing to its potential to overcome the limitations of conventional 3D manufacturing techniques, that is, to control the overall ... Read more
Application of electrospun materials in oil–water separations

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Tsipa, PC Date: Apr 2020 There has been ever-increasing pressure to come up with novel strategies for oily wastewater treatment since it affect the available water sources, crop production, aquatic life and human health. Electrospun nanofibrous materials with attractive ... Read more
Assessing a sustainable manufacturing route to lapatinib

Author: Stark, RT ; Rye, DR ; Newton, OJ ; Deadman, BJ ; Miller, PW ; Panayides, Jenny-Lee ; Riley, Darren L ; Helldardt, K ; Hii, KK Date: Aug 2022 A synthetic route to an anti-cancer drug, lapatinib, was devised to support the development of a sustainable manufacturing process in South Africa. Quantitative metrics were employed to evaluate the sustainability of the key steps of the reaction. Read more
Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology

Author: Andrew, Jerome E ; Masetlwa, J ; Tesfaye, T ; Sithole, Bishop B Date: Dec 2020 Bark from trees obtained from sustainably managed plantations used in the production of timber, pulp and paper is an under-utilised waste in many countries across the world. However, in the context of an integrated biorefinery, they may serve ... Read more
Beneficiation of wood sawdust into cellulose nanocrystals for application as a bio-binder in the manufacture of particleboard

Author: Fagbemi, Olajumoke D ; Andrew, Jerome E ; Sithole, Bishop B Date: Oct 2021 This study reports on the beneficiation of wood sawdust into cellulose nanocrystals (CNC) for application as a binder in the manufacture of particleboard. The cellulose nanocrystal from wood sawdust was extracted using acid hydrolysis and an ... Read more
Binding pose analysis of hydroxyethylamine based ß-secretase inhibitors and application thereof to the design and synthesis of novel indeno[1,2-b]indole based inhibitors

Author: Van der Westhuizen, CJ ; Van Greunen, DG ; Cordier, W ; Nell, M ; Steenkamp, V ; Stander, A ; Panayides, Jenny-Lee ; Riley, DL Date: Nov 2020 ß-Secretase (BACE1) is recognised as a target for the treatment of Alzheimer’s disease, and transition-state isosteres such as hydroxyethylamines have shown promise when incorporated into BACE1 inhibitors. A computational investigation of ... Read more
Biocement: A novel approach in the restoration of construction materials

Author: Enshasy, HE ; Dailin, DJ ; Malek, RA ; •Nordin, NZ ; Nordin, NZ ; Keat, HC ; Eyahmalay, J ; Ramchuran, Santosh O ; Ghong, JNC ; Ramda, VM ; Lalloo, Rajesh Date: Jun 2020 Concrete is the most commonly used construction material worldwide for the development of durable structures. Structural integrity and design of buildings have become increasingly important in construction engineering as well as assessment ... Read more
Biodegradable behaviour of waste wool and their recycled polyster preforms in aqueous and soil conditions

Author: Muniyasamy, Sudhakar ; Patnaik, Asis Date: Jan 2021 Present study deals with the biodegradable behavior of individual components and their preforms of nonwoven biocomposites developed from waste wool fibers including coring wool (CW), dorper wool (DW) and recycled polyester fibers (RPET). A ... Read more
Biodegradation of petroleum hydrocarbon waste using consortia of Bacillus sp

Author: Masika, Wendy S ; Moonsamy, Ghaneshree ; Mandree, Prisha ; Ramchuran, Santosh O ; Lalloo, Rajesh ; Kudanga, T Date: Dec 2020 Petroleum hydrocarbons are toxic to all forms of life; therefore, environmental pollution caused by petroleum is of great concern. Bio-based environmentally friendly strategies are preferred for the remediation of these contaminated sites. ... Read more
Biodiesel production potential of an indigenous South African microalga, Acutodesmus bajacalifornicus

Author: Grobler, J ; Harding, KG ; Smit, Monique ; Ramchuran, Santosh O ; Durand, P ; Low, M Date: Sep 2021 In this study, a South African indigenous microalga Acutodesmus bajacalifornicus was evaluated in different cultivation media. Eleven potential cultivation media were identified and tested on A. bajacalifornicus, a potential source for biodiesel ... Read more
Bioelectricity generation by natural microflora of septic tank wastewater (STWW) and biodegradation of persistent petrogenic pollutants by basidiomycetes fungi: An integrated microbial fuel cell system

Author: Thulasinathan, B ; Jayabalan, T ; Sethupathi, M ; Kim, W ; Muniyasamy, Sudhakar ; Sengottuvelan, N ; Nainamohamed, S ; Ponnuchamy, K ; Alagarsamy, A Date: Jan 2021 The microbial fuel cell is a unique advantageous technology for the scientific community with the simultaneous generation of green energy along with bioelectroremediation of persistent hazardous materials. In this work, a novel approach of ... Read more
Bioremediation of polycyclic aromatic hydrocarbons from industry contaminated soil using indigenous bacillus spp.

Author: Mandree, Prisha ; Masika, Wendy S ; Naicker, Justin ; Moonsamy, Ghaneshree ; Ramchuran, Santosh O ; Lalloo, Rajesh Date: Sep 2021 Polycyclic aromatic hydrocarbons (PAHs) are reportedly toxic, ubiquitous and organic compounds that can persist in the environment and are released largely due to the incomplete combustion of fossil fuel. There is a range of microorganisms ... Read more
Biowaste biorefineries in South Africa: Current status, opportunities, and research and development needs

Author: Sekoa, Patrick T ; Chunilall, Viren ; Msele, K ; Buthelezi, L ; Johakimu, Jonas ; Andrew, Jerome E ; Zungu, M ; Moloantoa, K ; Maningi, N ; Habimana, O ; Swartbooi, Ashton M Date: Dec 2023 As one of the highest carbon-emitting nations, South Africa is working tirelessly to swiftly transition to sustainable technologies in order to strengthen its green economy initiatives. Amongst the technologies that are explored in the ... Read more
Cellulose nanocrystals and snail shell-reinforced polyvinyl alcohol bioplastic films: Additive concentration optimization and mechanical properties assessment

Author: Gbadeyan, Oluwatoyin J ; Fagbemi, Olajumoke D ; Jerome, Andrew E ; Adali, S ; Glen, B ; Sithole, Bishop B Date: Jul 2022 This study focused on modeling and optimization of the concentration of poly (vinyl alcohol) (PVA), cellulose nanocrystals (CNC), snail shell nanoparticles (SSN), and glycerol for the development of bioplastic films. The response surface ... Read more
Cellulose nanocrystals-based composites

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Mtibe, Asanda ; Motsoeneng, TS ; Mokhothu, TH ; Tshifularo, CA Date: Jan 2020 Cellulose nanocrystals and cellulose nanocrystals-based composites with their unique features, such as abundance, renewability, high strength and stiffness, eco-friendliness, and relatively low density received unprecedented interest from ... Read more

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