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Browsing by Author "Ramchuran, Santosh O"

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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
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
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
Cloning, multicopy expression and fed-batch production of Rhodotorula araucariae epoxide hydrolase in yarrowia lipolytica

Author: Ramduth, D ; Roth, Robyn L ; Lalloo, Rajesh ; Simpson, C ; Mitra, RK ; Gorgens, J ; Ramchuran, Santosh O ; Mathiba, K Date: May 2008 Epoxide hydrolases (EHs) of fungal origin have the ability to catalyse the enantioselective hydrolysis of epoxides to their corresponding diols. However wild type fungal EHs are limited in the substrate range and enantioselectivity, additionally ... Read more
Competitive exclusion as a mode of action of a novel Bacillus cereus aquaculture biological agent

Author: Lalloo, Rajesh ; Moonsamy, Ghaneshree ; Ramchuran, Santosh O ; Görgens, J ; Gardiner, N Date: 2010 When B. cereus was tested in plate well inhibition studies, no production of antimicrobial compounds was detected. B. cereus had a high growth rate (0.96.h−1), whereas Aer. hydrophila concentration decreased by ∼70% in co-culture experiments. ... Read more
Development of Bacillus spp. consortium for one-step “Aerobic Nitrification-Denitrification” in a fluidized-bed reactor

Author: Roets-Dlamini, Yrielle ; Lalloo, Rajesh ; Moonsamy, Ghaneshree ; Kumari, S ; Nasr, M ; Ramchuran, Santosh O ; Bux, F Date: Feb 2022 Application of two-step “Autotrophic Nitrification and Anoxic Denitrification” for nutrients removal has found several limitations. This study aimed at isolating indigenous heterotrophic Bacillus strains for chemical oxygen demand (COD), ... Read more
Establishing miniaturised structural testing techniques to enable high-throughput screening of microorganisms and microbial components for unpaved road stabilisation application

Author: Malapermal, Veshara ; Naicker, Prisha ; Mgangira, Martin B ; Mukaratirwa, Samson ; Lalloo, Rajesh ; Ramchuran, Santosh O Date: Jan 2020 Roads are expensive to develop particularly in challenging environmental conditions, and a lack of understanding of the properties of soil can lead to poor design and premature failures contributing to costly maintenance. The construction ... Read more
Improving strength and hydraulic characteristics of regional clayey soils using biopolymers

Author: Ojuria, OO ; Ramdas, Veshara ; Aderibigbe, EA ; Williams, GC ; Ramchuran, Santosh O ; Al-Nageim, H Date: Dec 2022 This paper portrays a unique demonstration of sustainable low-cost ground improvement for regional soil deposits, by comparing locally sourced biopolymer soil stabilisation soil with imported biopolymer stabilisation. The conventional materials ... Read more
Isolation and selection of Bacillus spp as potential biological agents for enhancement of water quality in culture of ornamental fish

Author: Lalloo, Rajesh ; Ramchuran, Santosh O ; Ramduth, DM ; Gorgens, J Date: Feb 2007 Natural isolates obtained from mud sediment and Cyprinus carpio were purified and assessed in vitro for efficacy based on the inhibi-tion of growth of pathogenic Aeromonas hydrophila and the decrease in concentrations of ammonium, nitrite, ... Read more
Isolation, selection and evaluation of Bacillus spp. as potential multi-mode probiotics for poultry.

Author: Ramlucken, Uraisha ; Roets, Yrielle ; Ramchuran, Santosh O ; Moonsamy, Ghaneshree ; Van Rensburg, CJ ; Thantsh, MS ; Lalloo, Rajesh Date: Jun 2020 Bacillus based probiotics are becoming relevant as alternatives to antibiotics used in poultry production and in other animal husbandry. This study describes the isolation of 48 Bacillus spp. candidates, from chickens and chicken environments, ... Read more
Large-scale production of an abalone probiotic, Vibrio midae, isolated from a South African abalone, Halitotis midae for use in aquaculture

Author: Moonsamy, Ghaneshree ; Zulu, Nodumo Nokulunga ; Lalloo, Rajesh ; Ramchuran, Santosh O ; Singh, S Date: 2020 The South African abalone industry is under severe pressure due to illegal harvesting and poaching of this seafood delicacy. These abalone are harvested excessively and consequently, these animals do not have a chance to replace themselves, ... Read more
A novel Bacillus based multi-strain probiotic improves growth performance and intestinal properties of Clostridium perfringens challenged broilers

Author: Ramlucken, Uraisha ; Ramchuran, Santosh O ; Moonsamy, Ghaneshree ; Lalloo, Rajesh ; Thantsha, MS ; Jansen van Rensburg, C Date: Jan 2020 There is a necessity for the implementation of in-feed probiotics in the poultry production industry, following strict regulations around the use of antibiotic growth promoters (AGP). Bacillus spp. are becoming an attractive alternative because ... Read more
An overview of green processes and technologies, biobased chemicals and products for industrial applications

Author: Ramchuran, Santosh O ; O’Brien, Frances F ; Dube, Noluthando N ; Ramdas, V Date: Jun 2023 Recently, there has been a paradigm shift towards ‘greener’ processes/products, with emphasis being placed on sustainability. The traditional manufacturing processes require re-working and adapting new methods to ensure that they are more ... Read more
Performance evaluation of bio-based fractions derived from Bacillus spp. for potential in situ soil stabilisation

Author: Ramdas, Veshara ; Lalloo, Rajesh ; Mandree, Prisha ; Mgangira, Martin B ; Mukaratirwa, Samson ; Ramchuran, Santosh O Date: Feb 2022 Current and future research focuses on the use of renewable technologies and materials to stabilise weak soils, of varying degrees, for road construction applications. Soil stabilisation is a method of strengthening a natural soil to meet ... Read more
Potential opportunities to convert waste to bio-based chemicals at an industrial scale in South Africa

Author: Mandree, PM ; Thopil, GA ; Ramchuran, Santosh O Date: Oct 2023 Globally, greater than 30% of waste is disposed of in some form of landfill, and it is estimated that annual waste-related emissions will increase by up to 76% by 2050. Emissions arising from fossil fuel-derived products and waste disposal ... Read more
Production and stability of a multi-strain Bacillus based probiotic product for commercial use in poultry

Author: Ramlucken, Uraisha ; Ramchuran, Santosh O ; Moonsamy, Ghaneshree ; Jansen van Rensburg, C ; Thantsha, MS ; Lalloo, Rajesh Date: Mar 2021 Probiotics can be effective alternatives to the prophylactic use of antibiotic growth promoters (AGPs) in response to industry and consumer concerns around their use in poultry. Studies on the suitability of Bacillus probiotics are emerging ... Read more
Production of a lipolytic enzyme originating from Bacillus halodurans LBB2 in the methylogrophic yeast Pichia pastoria

Author: Ramchuran, Santosh O Date: Jul 2006 A gene encoding a lipolytic enzyme amplified from the alkaliphilic bacterium Bacillus halodurans LBB2 was cloned into the pPICZaB vector and integrated into the genome of the protease deficient yeast strain Pichia pastoris SMD1168H. This ... Read more
Recombinant lipase immobilised on the cell surface of Bacillus halodurans Alk 36 exploiting the FliC protein

Author: Ramchuran, Santosh O ; Berger, E ; Du Plessis, E ; Crampton, BG ; Louw, ME Date: Sep 2006 In order to investigate the possibility of using the FliC display system for biotransformation in B. halodurans, construct pSECNLipC habouring the LipA gene from Geobacillus thermoleovorans was designed and evaluated in shake flasks and batch ... Read more
Review of current and future bio-based stabilisation products (enzymatic and polymeric) for road construction materials

Author: Malapermal Ramdas, Veshara ; Mandree, Prisha ; Mgangira, Martin B ; Mukaratirwa, S ; Lalloo, Rajesh ; Ramchuran, Santosh O Date: Oct 2020 In situ soil modification is required in order to improve the primary engineering properties of the material to meet a road construction standard. Bio-stabilised soil is an environmentally friendly, cost-effective alternative to imported ... Read more

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