Yunus Shukor

Yunus Shukor
Universiti Putra Malaysia | UPMย ยทย Department of Biochemistry

Doctor of Philosophy
๐Ÿ…ฒ๐Ÿ…ฐ๐Ÿ…ป๐Ÿ…ป ๐Ÿ…ต๐Ÿ…พ๐Ÿ† ๐Ÿ…ฟ๐Ÿ…ฐ๐Ÿ…ฟ๐Ÿ…ด๐Ÿ†๐Ÿ†‚ ๐Ÿ…ต๐Ÿ…พ๐Ÿ† Journal of Biochemistry, Microbiology and Biotechnology (JOBIMB) (e-ISSN 2289-5779)

About

403
Publications
138,032
Reads
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Citations
Introduction
Our New Discovery of a Mathematical Formulation for Sums of Power of Which The Faulhaber Sums of Power for Integers Falls Under its Umbrella. https://www.youtube.com/watch?v=WBDh5TobGCU&t=1590s S๐’†๐’† ๐’„๐’๐’Ž๐’Ž๐’†๐’๐’• (26:30) ๐’ƒ๐’š ๐’•๐’‰๐’† ๐‘ช๐’‚๐’Ž๐’ƒ๐’“๐’Š๐’…๐’ˆ๐’† ๐‘ด๐’‚๐’•๐’‰๐’†๐’Ž๐’‚๐’•๐’Š๐’„๐’Š๐’‚๐’ ๐‘ท๐’“๐’๐’‡ ๐‘ฑ๐’๐’‰๐’ ๐‘ช๐’๐’‚๐’•๐’†๐’”, ๐’…๐’๐’„๐’•๐’๐’“๐’‚๐’ ๐’”๐’–๐’‘๐’†๐’“๐’—๐’Š๐’”๐’๐’“ ๐’๐’‡-2016 ๐‘จ๐’ƒ๐’†๐’/๐‘ต๐’๐’ƒ๐’†๐’ ๐’‘๐’“๐’Š๐’›๐’† ๐‘ท๐’“๐’๐’‡. ๐‘บ๐’Š๐’“ ๐‘จ๐’๐’…๐’“๐’†๐’˜ ๐‘พ๐’Š๐’๐’†๐’” ๐’๐’ ๐’•๐’‰๐’† ๐’‘๐’๐’•๐’†๐’๐’•๐’Š๐’‚๐’ ๐’๐’๐’—๐’†๐’๐’•๐’š ๐’๐’‡ the ๐’˜๐’๐’“๐’Œ.
Education
September 1990 - June 1993
Imperial College London
Field of study
  • Biochemistry

Publications

Publications (403)
Article
Full-text available
Phaleria macrocarpa (Scheff.) Boerl (Thymelaceae) is commonly known as 'Crown of God', 'Mahkota Dewa', and 'Pau'. It originates from Papua Island, Indonesia and it grows in tropical areas. Empirically, it is potent in treating the hypertensive, diabetic, cancer and diuretic patients. It has a long history of ethnopharmacological usage, and the lack...
Article
A heavy metals enzymatic-based assay using papain was developed. Papain was assayed using the Casein-coomassie-dye-binding assay. The assay is sensitive to several heavy metals. The IC50 (concentration of toxicant giving 50% inhibition) of Hg2+, Ag2+, Pb2, Zn2+ is 0.39, 0.40, 2.16, 2.11mglโˆ’1, respectively. For Cu2+ and Cd2+ the LOQ (limits of quant...
Article
Sum of Power had gathered interest of many classical mathematicians for more than two thousand years ago. The quests of finding sum of power or discrete sum of numerical power can be traced back from the time of Archimedes in third BC then to Faulhaber in the sixteen centuries. Until today there is no closed form sums of power formulation for an ar...
Preprint
Full-text available
The emergence of a new variant that can overcome the effectiveness of current vaccines is a real threat that can jeopardize the eradication of COVID-19. This has prompt calls for complementary treatments for combating the myriads of the COVID-19 disease spectrum. There are 5 main hurdles for an effective COVID-19 treatment. The first is to inhibit...
Preprint
Full-text available
There is currently no antiviral proven to successfully combat COVID-19. Tackling the disease require halting virus proliferation and reducing viral complications in humans. The goal of this research is to evaluate the possible use of papaya leaves extract as a multifaceted antiviral and potential therapy for COVID-19. SARSโ€“CoVโ€“2 viral targets were...
Article
Full-text available
Adults who are exposed to high levels of lead may develop hypertension and kidney damage. Lead exposure is dangerous for everyone, but it can have devastating effects on pregnant women and their babies. Methods such as membrane separation, ion exchange, precipitation, and biosorption are currently in use for the removal of lead pollution. Biosorpti...
Article
Full-text available
Hypertension and kidney impairment are two of the many adult health problems that have been related to lead exposure. Women who are expecting a child are especially susceptible to the dangers of lead since it can have devastating consequences on the developing embryo. Existing techniques for the remediation of lead pollutant include membrane separa...
Article
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While Cd production, consumption, and environmental release have all skyrocketed in recent decades, there is currently no practical way to recycle Cd compounds. This suggests that Cd compounds may be very dangerous to human health. Due to this cadmium remediation from polluted environment is urgently needed. Several viable technologies include bios...
Article
In addition to its use as a pesticide, the chemical compound known as 2,4-dinitrophenol (2,4-DNP) is also utilized in the creation of wood preservatives and colors. Symptoms of acute (short-term) exposure to 2,4-DNP in humans include nausea or vomiting, sweating, headaches, disorientation, and a loss of weight. This type of exposure occurs when the...
Article
Full-text available
Insecticides are an example of an environmental contaminant that can cause harmful effects on various types of organisms. Implementation of continuous monitoring program is needed to ensure the level of contamination can be controlled. In this present study, acetylcholinesterase (AChE) from the brain of Monopterus albus was elucidated to determine...
Article
Extractions from plants have been the subject of considerable research because of their potential to inhibit the growth of bacteria. It was not possible to compare the outcomes of this study to those of previous investigations because these discoveries were not reported on in the benchmark values. The use of data-driven nonlinear regression analysi...
Article
There is currently no feasible method of recycling Cd compounds, despite the fact that Cd production, consumption, and environmental release have all skyrocketed in recent decades. This raises serious concerns about the potential dangers of Cd compounds to human health. This highlights the pressing need for cadmium pollution cleanup. Biosorption is...
Article
Long-term water contamination, including heavy metals, may harm the reputation of the location. Because of this, it is necessary to do regular water quality checks. In light of the high expense of instrument monitoring, biomonitoring based on enzymes is rapidly gaining popularity around the world. For the purpose of this investigation, a molybdenum...
Article
One of the most common types of pollution that has a negative impact on the biotic community in aquatic habitats is heavy metal poisoning of the water. Both essential and non-essential heavy metals can be toxic to living things if their concentrations are too high for their bioavailability. Although the toxicity of heavy metals, and especially anio...
Article
Hypertension and kidney damage have been linked to lead exposure in adults. Any person can be harmed by lead, but pregnant women and their unborn children are especially vulnerable. Presently, lead pollution is removed using membrane separation, ion exchange, precipitation, and biosorption. Biosorption's low operating costs, high efficiency at deto...
Article
The biosorption of the biosorption of lead(II) onto an Antarctic sea-ice bacterial exopolysaccharide is remodeled using nonlinear regression and the optimal mode was determined by a series of error function assessments. The Sips model performed best in statistical tests including root-mean-square error (RMSE), adjusted coefficient of determination...
Article
Plant extracts have been studied extensively for their ability to suppress the growth of bacteria. Because these findings were not reported on in the benchmark values, it was not possible to compare the results of this study to other investigations. Nonlinear regression analysis of the data is one of the most accurate methods of determining this va...
Article
The curative effect of honey is due to the fact that it possesses antibacterial activity, it keeps wounds moist by retaining their natural moisture, and the honey's high viscosity contributes to the formation of a protective barrier that helps to keep infections at bay. All of these properties work together to make honey an effective wound healer....
Article
Currently, heavy metals pollution is significantly becoming a global concern as it causes severe toxicity towards human health and the environmental condition. Intensive efforts to develop a highly sensitive, rapid, and simple toxicity assay to assess the toxic effects of heavy metals in aquatic bodies have been done. An emerging tool to solve this...
Article
Plant extracts have been studied extensively for their ability to suppress the growth of bacteria. Because these findings were not reported on in the benchmark values, it was not possible to compare the results of this study to other investigations. Nonlinear regression analysis of the data is one of the most accurate methods of determining this va...
Article
Full-text available
In this work, kinetic growth models such as Luong, Yano, Teissier-Edward, Aiba, Haldane, Monod, Han and Levenspiel were used to model molybdenum blue production from Serratia sp. strain DRY5. Based on statistical analyses such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), and accuracy factor (AF)...
Article
Full-text available
Industrial effluents (Azo dyes) are brightly coloured, making their disposal into receiving waters undesirable not only because many Azo dyes and their breakdown products are toxic to aquatic life and mutagenic to humans, but also because many Azo dyes and their breakdown products are harmful to aquatic life due to the presence of aromatics and met...
Article
Full-text available
Biosorption is a kind of sorption technology in which the sorbent is derived from a biological source. At the moment, biosorption is seen as a simple, cost-effective, and environmentally friendly process that might be employed as a viable alternative to conventional techniques of pollution removal. When it comes to improper textile waste disposal,...
Article
Molybdenum is a pollutant that shows toxicity to spermatogenesis while polyethylene glycols (PEG) are used predominantly in detergents. The pollution of molybdenum and PEGs are reported worldwide. We have isolated ten molybdenum-reducing bacterial isolates from soil that can reduce molybdenum (sodium molybdate) into the colloidal molybdenum blue (M...
Article
Full-text available
Because of its extensive usage in industrial applications such as leather tanning, metallurgy, electroplating, and refractory materials, chromium is one of the most dangerous trace elements introduced into surface and ground waters. The sorption isotherm of chromium sorption onto calcium alginate nanoparticles were analyzed using ten modelsโ€”Henry,...
Article
Physical or chemical procedures could efficiently remove contaminants including pesticides such as carbamates from high concentrations of toxicants. Bioremediation, on the other hand, is frequently a less expensive option in the long term when used at low concentrations. Isolation of multiple toxicants removing microorganisms is the goal of bioreme...
Article
Biosorption is a sort of sorption technology in which the sorbent is a substance that is biologically sourced. In today's world, biosorption is seen as a simple, inexpensive, and ecologically friendly way for removing pollutants from the environment. One of the branches of bioremediation that is utilised to decrease environmental pollution in the c...
Article
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Polycyclic aromatic hydrocarbons (PAHs), which are also part of persistent organic pollutants (POPs), are considered to be especially toxic to humans (carcinogenic), likewise to plants, microorganisms and other living organisms. PAHs soil contamination occurs by storage leaking, transport loss, the land disposal of petroleum waste, and accidental o...
Article
More and more people are looking at bioremediation as a cheaper option to physhiochemical techniques for cleaning up pollution from farming, mines, and other chemical industries. Toxic effects of molybdenum on spermatogenesis harm not only humans but also livestock and aquatic life. As a result, efforts are being made to remove it from the ecosyste...
Article
Full-text available
An example of biosorption is when the sorbent is made from a biodegradable material. Biosorption is now being seen as a simple, cost-effective, and environmentally acceptable alternative to traditional pollution treatment methods. Bioremediation is one of the branches of bioremediation that is used to minimise pollution in the context of incorrect...
Article
When it comes to finding the best fit of nonlinear curves to acceptable models, linear regression with least squares is the most effective technique. Because residuals (the difference between observed and predicted data) must follow a normal distribution and the data must be free of outliers and uniform variance, statistical tests are used to ident...
Article
Full-text available
Traditionally, testing for outliers is performed by first creating a null hypothesis, H0, indicating that the suspected results do not differ significantly from those of other members of the data set, and then rejecting it if the likelihood of getting the experimental results is extremely low (e.g., p=0.05). Similarly, if H0 can be rejected, the qu...
Article
Non-Newtonian fluids include a variety of regularly encountered substances such as custard, honey, toothpaste, starch suspensions (including starch from corn starch), paint, blood, melted butter, and hairspray. For decades, scientists have investigated non-Newtonian fluid behavior and produced models to aid in the characterization of non-Newtonian...
Article
Numerous papers fail to conduct statistical diagnostics of the nonlinear model that was used, and the data may be nonrandom, which is a need for all parametric statistical evaluation procedures that rely on random data. Whenever the diagnostic tests find that the residuals reflect a pattern, there are a range of treatments available, such as nonpar...
Article
Mathematical models can be used to conduct COVID-19 pandemic analyses, including theoretical, quantitative, and simulation analyses. COVID-19 pandemic models such as the modified Gompertz, von Bertalanffy, modified logistics including the recent MMF model which was the best model in fitting the total number of COVID-19 cases for Brazil. We were the...
Article
Traditionally, testing for outliers is performed by first creating a null hypothesis, H0, indicating that the suspected results do not differ significantly from those of other members of the data set, and then rejecting it if the likelihood of getting the experimental results is extremely low (e.g., p=0.05). Similarly, if H0 can be rejected, the qu...
Article
The most common anionic surfactants in the formulation of detergents are Linear Alkylbenzene Sulfonates (LAS), with an anionic sulfonate head group and a hydrophobic alkylbenzene tail group. The two primary synthetic detergents, together with sodium laureth sulphate, have been around for quite some time and may be found in many personal-care items...
Article
Full-text available
Numerous papers fail to conduct statistical diagnostics of the nonlinear model that was used, and the data may be nonrandom, which is a need for all parametric statistical evaluation procedures that rely on random data. Whenever the diagnostic tests find that the residuals reflect a pattern, there are a range of treatments available, such as non...
Article
Due to the increasing development of nanotechnology and its wide applications, the flow of a nanofluid in a duct is also optimal geometric construction of ducts in the fabrication and production of various ducts to increase efficiency in nanofluid behavior are essential. In this paper, by using the molecular dynamics (MD) simulation process, the ef...
Article
Full-text available
Predicting the crucial effect of single metal pollutants against the aquatic ecosystem has been highly debatable for decades. However, dealing with complex metal mixtures management in toxicological studies creates a challenge, as heavy metals may evoke greater toxicity on interactions with other constituents rather than individually low acting con...
Article
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A pot experiment was conducted to measure the phyto-tolerance and accumulation of heavy metals in petroleum oily sludge POS by Cajanus cajan (pigeon pea) on soils treated with five different concentrations (1%, 2%, 3%, 4%, and 5% w/w) of the POS. The response of the plant to oily sludge varied significantly from the untreated control and among the...
Article
Full-text available
Molybdenum (Mo) microbial bioreduction is a phenomenon that is beginning to be recognized globally as a tool for the remediation of molybdenum toxicity. Molybdenum toxicity continues to be demonstrated in many animal models of spermatogenesis and oogenesis, particularly those of ruminants. The phenomenon has been reported for more than 100 years wi...
Article
Full-text available
Affinity chromatography for acetylcholinesterase; AChE namely Procainamide Sepharose CL-6B was synthesised through the coupling method between soluble procainamide hydrochloride immobilised by a cross-linked agarose size exclusion, sepharose CL-6B. 1, 4-butanediol diglycidyl ether plays a role in building up a productive and rigid connecting of a b...
Article
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The development of glyphosate-resistant genetically modified organisms (GMO) has increased the use of herbicide glyphosate by several magnitudes in recent years. It is now the most commonly used pesticide globally that affects aquatic habitats, especially fish. This study aims to add new knowledge on the effect of technical grade glyphosate on seve...
Article
Full-text available
The application of microorganisms in azo dye remediation has gained significant attention, leading to various published studies reporting different methods for obtaining the best dye decolouriser. This paper investigates and compares the role of methods and media used in obtaining a bacterial consortium capable of decolourising azo dye as the sole...
Article
Full-text available
Commercialisation of glyphosate [N-(phosphonomethyl)glycine] in the early 1970s has left a big leap in the agriculture sector. This is due to its effectiveness in controlling a wide range of weeds. Glyphosate translocates well in plants. In addition, with added surfactant in its formulae, it can also be used in wet conditions. Its ability to kill w...
Article
Full-text available
A predictive mathematical modeling of the biofilm potentials of phytochemicals from A. philippense extract and adhesion with P. aeruginosa was studied for the very first time. Eight different kinetic models Von Bertalanffy, Baranyi-Roberts, modified Schnute, modified Richards, modified Gompertz, Modified Logistics and latest Huang were used to get...
Article
Full-text available
In the quest for novel bioactive metabolites, which can also be used as therapeutic agents, Adiantum philippense (A. philippense), an ethnomedical important fern, has become a fascinating herb. In this study, the predictive mathematical modelling of A. philippense crude extract was tested against E. coli, a common food pathogen for its phytochemica...
Article
Full-text available
n the assessment of adsorption processes, thermodynamic experiments on the adsorption process play a critical role (both physical and chemical). The precision measurement of thermodynamic parameters relies on the equilibrium constants between two phases (KL: dimensionless). In this study, thermodynamic parameters were calculated from the KL cons...
Article
Full-text available
Thermodynamic studies on adsorption process play a vital role in the estimation of adsorptive mechanisms (both physical and chemical). Estimating the accuracy of thermodynamic parameters is dependent upon the equilibrium constants between two phases (KL: dimensionless). In this study, thermodynamic parameters were calculated from the KL constant...
Article
Full-text available
The bacterium Pseudomonas sp. strain DrYJ7 is an efficient acrylamide-degrader and is able to tolerate high concentrations of acrylamide. A primary modelling exercise for the growth of this bacterium on acrylamide yields important specific growth rates which were utilized successfully for secondary modelling exercise which gave Luong as the best mo...
Article
The reduction of molybdenum to molybdenum blue is a detoxification process and the development of Mo-blue is associated with growth. Significant parameters such as precise reduction rate, theoretical maximum reduction and whether reduction at high molybdenum concentration influenced the lag time of reduction can be discovered by mathematical modeli...
Article
Full-text available
In most instances, there exists an inaccuracy in interpretation of adsorption/reduction of substances using linear technique as it can only provide an approximate value of the measured parameter; the specific adsorption rate. This paper provides for the first-time modelling of the effect of nZVI/BC, nZVI and Biochar (BC) on the adsorption/reduction...
Article
Methods such as membrane isolation, ion replacements, precipitation, transformation and biosorption are proven approaches to contaminant control. Biosorption has all of these technological features including low operating costs, very efficient detoxifying of toxicities at low volumes, minimal amounts of removal components and nutrient requirement,...
Article
Full-text available
Pollutant treatment methods are available for membrane isolation, exchange of ions, precipitation, transformation and biosorption. Biosorption has many positive aspects of all this technology, including low running costs, very effective toxicant detoxification at low concentrations, low levels of disposal materials. In many applications, adsorption...
Article
The bacterium Pseudomonas sp. strain Dr Y Kertih is an efficient acrylamide-degrader isolated from hydrocarbon sludge and is able to tolerate high concentrations of acrylamide. Modelling was carried out using several other kinetic models such as Haldane, Andrews Noack, the Web and Yano, Luong, Teissier and Hans-Levenspiel. The statistical analysis...
Article
Full-text available
Cholinesterase-based biosensor well known as a sensitive method to detect the existence of harmful dissolved compounds in any type of water source, especially the river. This alternative biosensor can be used to determine the level of pollution of the water in a short period of time as well as to evaluate the low cost and simple service. The aim of...
Article
Diodon hystrix, commonly known as spot-fin porcupine fish is a salt-water fish belonging to the Diodontidae family. It is widely distributed in Sabah wet market due to its commercial value. This study exploits the effectiveness of Cholinesterase (ChE) obtained from the brain tissue of D. hystrix in detecting carbamates inhibitory activities. Carbam...
Article
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Several models are available to determine the effect of temperature on the growth rate of microorganisms on substrates. An example is Arrhenius model, which is very popular because it has few parameters. For the first time, a discontinuous chevron-like graph of apparent activation energy based on the Arrhenius plot on the growth of 2-chloro-4-nitro...
Article
One of the authors has been unintentionally left out and the list of authors and affiliation should be added as follows. Abubakar Aisami 1* Neni Gusmanizar2 and Mohd Yunus Shukor3 1Department of Biochemistry, Gombe State University, P.M.B. 127, Tudun Wada, Gombe, Gombe State, Nigeria. 2Department of Animal Nutrition, Faculty of Animal Science, Anda...
Article
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In the present study, a mixed culture from a local agricultural soil sample was isolated for Metanil Yellow (MY) dye decolorization. The metagenomic analysis confirmed that 42.6% has been dominated by genus Bacillus, while Acinetobacter (14.0%) is present in the microbial communities of the mixed culture. For fungi diversity analysis, around 97.0%...
Article
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In this study, the Metanil Yellow (MY) decolorizing mixed culture, namely FN3, has been isolated from agriculture soil. The mixed culture was immobilized using gellan gum. In order to optimize the immobilization process for maximal dye decolorization, Response Surface Methodology (RSM) was performed. The optimal conditions for immobilization predic...
Article
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Potentially toxic metals pollution in the Straits of Malacca warrants the development of rapid, simple and sensitive assays. Enzyme-based assays are excellent preliminary screening tools with near real-time potential. The heavy-metal assay based on the protease ficin was optimized for mercury detection using response surface methodology. The inhibi...
Article
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Microplastic pollution is globally recognised as a serious environmental threat due to its ubiquitous presence related primarily to improper dumping of plastic wastes. While most studies have focused on microplastic contamination in the marine ecosystem, microplastic pollution in the soil environment is generally little understood and often overloo...
Article
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Constructed wetlands (CWs) are affordable and reliable green technologies for the treatment of various types of wastewater. Compared to conventional treatment systems, CWs offer an environmentally friendly approach, are low cost, have fewer operational and maintenance requirements, and have a high potential for being applied in developing countries...
Article
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Lack of regulation in bauxite mining has caused land contamination in Malaysia. Land rehabilitation requires plants with excellent adaptability to adverse conditions. Inedible, economical viable crops with environmental co-benefits, like phytoremediation, are preferred. In this study, Jatropha curcas was evaluated for its growth performance in baux...