Norazah Mohammad Nawawi

UNISEL | Universiti Selangor | unisel · Institute Bio-IT Selangor

Phenol is an important compound widely used in formulation of dyes, pesticides, in fabrication of plastics, as well as being generated in several industrial effluent other industries. In the present study, ability of phenol-degrading bacteria sp. NAM 81 was characterised by optimising the important parameters that were able to support phenol degrad...

Immobilisation, immobilization, bacteria cell, phenol degradation

Gram positive actinomycete known as Rhodococcus, is known to be highly resistant towards cell lysing. Due to the complex nature of its cell envelope, effective root studies on this bacterium require laborious protocol modifications. Hence, in search of an effective method to disrupt Rhodococcus, present study aimed at identifying the most effective...

Silver nanoparticles (AgNPs) have been employed in various fields of biotechnology due to their proven properties as an antibacterial, antiviral and antifungal agent. AgNPs are generally synthesized through chemical, physical and biological approaches involving a myriad of methods. As each approach confers unique advantages and challenges, a trends...

Nanotechnology is a rapidly developing field due to the emergence of various resistant pathogens and the failure of commercial methods of treatment. AgNPs have emerged as one of the best nanotechnology metal nanoparticles due to their large surface-to-volume ratio and success and efficiency in combating various pathogens over the years, with the bi...

Declining interest in science, mathematics, engineering, and technology (STEM) globally has also affected the students in Malaysia. Only 42% of middle school students in Malaysia chose to do science, including technical and vocational programs at high school as the course always been associated with difficult subjects, textbook-based fields and lac...

The number of students pursuing science and engineering is reducing drastically over the years which is of great concern to the country. Hence, in 2011, the Malaysia Education Blueprint was initiated emphasizing on the role of STEM for establishing a scientific and innovative society. The National STEM Movement has taken the step forward to make th...

STEM is an integrated teaching and learning approach in Science, Technology, Engineering and Mathematic. The decreasing enrolment of students in STEM-field is alarming and impacting the industry as well as the university students’ intake. This study is focusing on one hundred of pre-university (foundation) students by looking at their understanding...

Pigment is a natural colorant produced by an organism including microalgae. A locally isolated microalgae, Acutodesmus reginae has shown potential in producing pigments. The intent of this study was to optimize the pigment yield from the unexplored Acutodesmus reginae. Various statistical software for experimental design as tools for optimization o...

Students learn Matheatics in a variety of ways, and it is recommended that teachers and parents use a hands-on activity to encourage students’ interest towards Science, Technology, Engineering and Mathematics (STEM) subjects. The Recreational Mathematics kit is designed to promote primary school students’ interest towards the subject. This kit has...

Taḥawwul is a changing process of a form to another form thus could affect the status of a particular ḥukm especially in vinegar products. Vinegar which produced before the taḥawwul ṣaḥīḥ can be considered as low-quality vinegar and is classified as fasīd vinegar (ḥarām) due to the presences of alcohol which is prohibited in Islam. Therefore, in th...

Sustainable chicken meat production is an important to provide a safe and good quality protein sources for human as foods and nutritions. The gastrointestinal tract (GIT) of chickens harbors a diverse and a complex microbiota that plays a vital role in digestion and absorption of nutrients, immune system development and pathogen exclusion. But howe...

Microalgae are organisms found in marine and freshwater environments. This organism is a natural source for a variable valuable compounds such as carbohydrates, proteins, lipids as well as pigments. Method for extraction of pigment from microalgae will be varied depending on the type of microalgae. The objective of this study was to obtain the chlo...

STEM education emphasizes the integrated study of science passing the boundaries of traditionally labelled disciplines while demonstrating its application in real life. Science forensic is an eye-catching subject for students, which implements the knowledge of biology, physics, and chemistry. The purpose of this study was to identify students’ inte...

In the past decades, the applications of indigenous microbes obtained from hydrocarbon-polluted environments in remediating phenol have proven effective even though phenol is highly toxic to microorganisms. The remediation of phenol in cold and polluted environments including Antarctica requires the usage of microorganisms that are able to adapt to...

Antarctica which was known as the most pristine ice dessert is largely influenced byanthropogenic contamination. Usually, persistent organic pollutants (POPs) contaminateAntarctic environment via Long Range Atmospheric Transport (LRAT) as well as via in situactivities like research, tourism and marine transportation. The extreme environment ofAntar...

Studies on the diversity of bacteria that can decompose or degrade phenol started four decades ago and continue till this day, including the continuous efforts to evaluate the abilities of new microorganism. In order to enhance the efficiency of the locally isolated Rhodococcus spp., optimum parameters that support the growth and degradation abilit...

This book provides an overview of biodegradation. The first chapter provides a detailed description on the ability of Rhodococcus UKMP-5M to act as a biological tool to remediate phenol, chlorinated compounds, nitrile, oil spillage and cyanide which selection was primarily based on their large-scale presence in industrial wastewater. Chapter Two pr...

Continuous accumulation of phenol contaminant in wastewater liberated from different resources affect the natural biodiversity of the environment. A locally isolated Rhodococcus sp. was successfully shown it ability to remove phenol. This study demonstrated that the employment of resting cells of Rhodococcus sp. NAM 81 from late exponential phase,...

The bacteria are a large group of unicellular microorganisms. Bacteria are ubiquitous in every habitat on Earth for example growing in soil, radioactive waste, water and as well as in organic matter and the live bodies of plants and animals. They are small cells, found in the environment as either individual cells or aggregated together as clumps....

Seven cultures of fungi were isolated from the soil of Cameroon Highlands. In this research, molecular approach was used for the identification of these fungi. The genomic DNA of the fungi species was extracted and the target sequences within the DNA were amplified using polymerase chain reaction (PCR) with ITS 1 (forward) and ITS 4 (reverse) as th...

There were seven cultures of fungi isolated from vegetable soil in Cameroon Highlands. In this research project, two techniques have been used for the identification purpose, which are macroscopic and microscopic morphology approaches to identify the genus of the fungus. Macroscopic identification based on the characteristic of the fungus grown on...

Phenol degrading bacteria bioremediation

Escalation in food industries unctuous wastes has led to serious anthropogenic problems to the environment. Parallel to “green strategy”, growing awareness in biological treatment emphasizes efficacy of enzymatic technology for bioremediation. Pertinently, researchers are in search for new lipase-lipid interaction for improved outcome. Rhodococcus...

Export Date: 23 March 2014, Source: Scopus

The ability of the bacterium, Rhodococcus UKM-P, to degrade phenol was studied in shake flask culture. The effect of the cultivation parameters (temperature, pH, type and concentration of nitrogen source and salt concentration) on growth of the bacterium and phenol degradation was evaluated. The highest cell growth and the amount of phenol degraded...