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Huyop F, Ullah S, Abdul Wahab R, Huda N, Sujana IGA, Saloko S, Andriani AASPR, Antara NS, Gunam IBW. Physicochemical and antioxidant properties of Apis cerana honey from Lombok and Bali Islands. PLoS One 2024; 19:e0301213. [PMID: 38578814 PMCID: PMC10997079 DOI: 10.1371/journal.pone.0301213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/12/2024] [Indexed: 04/07/2024] Open
Abstract
Limited honey production worldwide leads to higher market prices, thus making it prone to adulteration. Therefore, regular physicochemical analysis is imperative for ensuring authenticity and safety. This study describes the physicochemical and antioxidant properties of Apis cerana honey sourced from the islands of Lombok and Bali, showing their unique regional traits. A comparative analysis was conducted on honey samples from Lombok and Bali as well as honey variety from Malaysia. Moisture content was found slightly above 20% in raw honey samples from Lombok and Bali, adhering to the national standard (SNI 8664:2018) of not exceeding 22%. Both honey types displayed pH values within the acceptable range (3.40-6.10), ensuring favorable conditions for long-term storage. However, Lombok honey exhibited higher free acidity (78.5±2.14 meq/kg) than Bali honey (76.0±1.14 meq/kg), surpassing Codex Alimentarius recommendations (≤50 meq/kg). The ash content, reflective of inorganic mineral composition, was notably lower in Lombok (0.21±0.02 g/100) and Bali honey (0.14±0.01 g/100) compared to Tualang honey (1.3±0.02 g/100). Electric conductivity, indicative of mineral content, revealed Lombok and Bali honey with lower but comparable values than Tualang honey. Hydroxymethylfurfural (HMF) concentrations in Lombok (14.4±0.11 mg/kg) and Bali (17.6±0.25 mg/kg) were slightly elevated compared to Tualang honey (6.4±0.11 mg/kg), suggesting potential processing-related changes. Sugar analysis revealed Lombok honey with the highest sucrose content (2.39±0.01g/100g) and Bali honey with the highest total sugar content (75.21±0.11 g/100g). Both honeys exhibited lower glucose than fructose content, aligning with Codex Alimentarius guidelines. The phenolic content, flavonoids, and antioxidant activity were significantly higher in Lombok and Bali honey compared to Tualang honey, suggesting potential health benefits. Further analysis by LC-MS/MS-QTOF targeted analysis identified various flavonoids/flavanols and polyphenolic/phenolic acid compounds in Lombok and Bali honey. The study marks the importance of characterizing the unique composition of honey from different regions, ensuring quality and authenticity in the honey industry.
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Affiliation(s)
- Fahrul Huyop
- Faculty of Science, Department of Biosciences, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor Bahru, Malaysia
- Department of Agro-Industrial Technology, Bioindustry Laboratory, Udayana University, Denpasar, Indonesia
| | - Saeed Ullah
- Faculty of Science, Department of Biosciences, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor Bahru, Malaysia
| | - Nurul Huda
- Faculty of Sustainable Agriculture, Universiti Malaysia Sabah, Sandakan, Sabah, Malaysia
| | - I. Gede Arya Sujana
- Department of Agro-Industrial Technology, Bioindustry Laboratory, Udayana University, Denpasar, Indonesia
| | - Satrijo Saloko
- Faculty of Food Technology and Agro Industry, University of Mataram, Nusa Tenggara Barat, Indonesia
| | | | - Nyoman Semadi Antara
- Department of Agro-Industrial Technology, Bioindustry Laboratory, Udayana University, Denpasar, Indonesia
| | - Ida Bagus Wayan Gunam
- Department of Agro-Industrial Technology, Bioindustry Laboratory, Udayana University, Denpasar, Indonesia
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Tan H, Othman MHD, Chong WT, Kek HY, Wong SL, Nyakuma BB, Mong GR, Wahab RA, Wong KY. Turning plastics/microplastics into valuable resources? Current and potential research for future applications. J Environ Manage 2024; 356:120644. [PMID: 38522274 DOI: 10.1016/j.jenvman.2024.120644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 01/26/2024] [Accepted: 03/10/2024] [Indexed: 03/26/2024]
Abstract
Plastics are a wide range of synthetic or semi-synthetic materials, mainly consisting of polymers. The use of plastics has increased to over 300 million metric tonnes in recent years, and by 2050, it is expected to grow to 800 million. Presently, a mere 10% of plastic waste is recycled, with approximately 75% ended up in landfills. Inappropriate disposal of plastic waste into the environment poses a threat to human lives and marine species. Therefore, this review article highlights potential routes for converting plastic/microplastic waste into valuable resources to promote a greener and more sustainable environment. The literature review revealed that plastics/microplastics (P/MP) could be recycled or upcycled into various products or materials via several innovative processes. For example, P/MP are recycled and utilized as anodes in lithium-ion (Li-ion) and sodium-ion (Na-ion) batteries. The anode in Na-ion batteries comprising PP carbon powder exhibits a high reversible capacity of ∼340 mAh/g at 0.01 A/g current state. In contrast, integrating Fe3O4 and PE into a Li-ion battery yielded an excellent capacity of 1123 mAh/g at 0.5 A/g current state. Additionally, recycled Nylon displayed high physical and mechanical properties necessary for excellent application as 3D printing material. Induction heating is considered a revolutionary pyrolysis technique with improved yield, efficiency, and lower energy utilization. Overall, P/MPs are highlighted as abundant resources for the sustainable production of valuable products and materials such as batteries, nanomaterials, graphene, and membranes for future applications.
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Affiliation(s)
- Huiyi Tan
- Faculty of Chemical and Energy Engineering, University Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknlogi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Wen Tong Chong
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hong Yee Kek
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Syie Luing Wong
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Bemgba Bevan Nyakuma
- Department of Chemical Sciences, Faculty of Science and Computing, Pen Resource University, P. M. B. 08, Gombe, Gombe State, Nigeria
| | - Guo Ren Mong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, 43900, Sepang, Selangor, Malaysia
| | | | - Keng Yinn Wong
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Process Systems Engineering Centre (PROSPECT), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
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Wahhab BH, Oyewusi HA, Wahab RA, Mohammad Hood MH, Abdul Hamid AA, Al-Nimer MS, Edbeib MF, Kaya Y, Huyop F. Comparative modeling and enzymatic affinity of novel haloacid dehalogenase from Bacillus megaterium strain BHS1 isolated from alkaline Blue Lake in Turkey. J Biomol Struct Dyn 2024; 42:1429-1442. [PMID: 37038649 DOI: 10.1080/07391102.2023.2199870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 04/01/2023] [Indexed: 04/12/2023]
Abstract
This study presents the initial structural model of L-haloacid dehalogenase (DehLBHS1) from Bacillus megaterium BHS1, an alkalotolerant bacterium known for its ability to degrade halogenated environmental pollutants. The model provides insights into the structural features of DehLBHS1 and expands our understanding of the enzymatic mechanisms involved in the degradation of these hazardous pollutants. Key amino acid residues (Arg40, Phe59, Asn118, Asn176, and Trp178) in DehLBHS1 were identified to play critical roles in catalysis and molecular recognition of haloalkanoic acid, essential for efficient binding and transformation of haloalkanoic acid molecules. DehLBHS1 was modeled using I-TASSER, yielding a best TM-score of 0.986 and an RMSD of 0.53 Å. Validation of the model using PROCHECK revealed that 89.2% of the residues were located in the most favored region, providing confidence in its structural accuracy. Molecular docking simulations showed that the non-simulated DehLBHS1 preferred 2,2DCP over other substrates, forming one hydrogen bond with Arg40 and exhibiting a minimum energy of -2.5 kJ/mol. The simulated DehLBHS1 exhibited a minimum energy of -4.3 kJ/mol and formed four hydrogen bonds with Arg40, Asn176, Asp9, and Tyr11, further confirming the preference for 2,2DCP. Molecular dynamics simulations supported this preference, based on various metrics, including RMSD, RMSF, gyration, hydrogen bonding, and molecular distance. MM-PBSA calculations showed that the DehLBHS1-2,2-DCP complex had a markedly lower binding energy (-21.363 ± 1.26 kcal/mol) than the DehLBHS1-3CP complex (-14.327 ± 1.738 kcal/mol). This finding has important implications for the substrate specificity and catalytic function of DehLBHS1, particularly in the bioremediation of 2,2-DCP in contaminated alkaline environments. These results provide a detailed view of the molecular interactions between the enzyme and its substrate and may aid in the development of more efficient biocatalytic strategies for the degradation of halogenated compounds.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Batool Hazim Wahhab
- Department of Microbiology, Faculty of Medicine, Al-Mustansiriyah University, Iraq
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Malaysia
| | - Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Malaysia
- Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, Ekiti State, Nigeria
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Malaysia
| | - Mohammad Hakim Mohammad Hood
- Department of Biotechnology, Kulliyah of Science, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Azzmer Azzar Abdul Hamid
- Department of Biotechnology, Kulliyah of Science, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Marwan Salih Al-Nimer
- Department of Pharmacology, College of Medicine, University of Diyala, Baqubah, Iraq
| | - Mohamed Faraj Edbeib
- Department of Medical Laboratories, Faculty of Medical Technology, Bani Walid University, Libya
| | - Yilmaz Kaya
- Department of Biology, Faculty of Science, Kyrgyz-Turkish Manas University, Bishkek, Kyrgyzstan
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Turkey
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Malaysia
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Bouguerra OM, Wahab RA, Huyop F, Al-Fakih AM, Mahmood WMAW, Mahat NA, Sabullah MK. An Overview of Crosslinked Enzyme Aggregates: Concept of Development and Trends of Applications. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04809-y. [PMID: 38180645 DOI: 10.1007/s12010-023-04809-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2023] [Indexed: 01/06/2024]
Abstract
Enzymes are commonly used as biocatalysts for various biological and chemical processes in industrial applications. However, their limited operational stability, catalytic efficiency, poor reusability, and high-cost hamper further industrial usage. Thus, crosslinked enzyme aggregates (CLEAs) are developed as a better enzyme immobilization tool to extend the enzymes' operational stability. This immobilization method is appealing because it is simpler due to the absence of ballast and permits the collective use of crude enzyme cocktails. CLEAs, so far, have been successfully developed using a variety of enzymes, viz., hydrolases, proteases, amidases, lipases, esterases, and oxidoreductase. Recent years have seen the emergence of novel strategies for preparing better CLEAs, which include the combi- and multi-CLEAs, magnetics CLEAs, and porous CLEAs for various industrial applications, viz., laundry detergents, organic synthesis, food industries, pharmaceutical applications, oils, and biodiesel production. To better understand the different strategies for CLEAs' development, this review explores these strategies and highlights the relevant concerns in designing innovative CLEAs. This article also details the challenges faced during CLEAs preparation and solutions for overcoming them. Finally, the trending strategies to improve the preparation of CLEAs alongside their industrial application trends are also discussed.
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Affiliation(s)
- Oumaima Maroua Bouguerra
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia.
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Malaysia.
| | - Fahrul Huyop
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
| | - Abdo Mohammed Al-Fakih
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
| | - Wan Muhd Asyraf Wan Mahmood
- Centre of Foundation Studies, Dengkil Campus, Universiti Teknologi MARA (UiTM) Selangor Branch, 43800, Dengkil, Selangor, Malaysia
| | - Naji Arafat Mahat
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
| | - Mohd Khalizan Sabullah
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia.
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Tan H, Mong GR, Wong SL, Wong KY, Sheng DDCV, Nyakuma BB, Othman MHD, Kek HY, Razis AFA, Wahab NHA, Wahab RA, Lee KQ, Chiong MC, Lee CH. Airborne microplastic/nanoplastic research: a comprehensive Web of Science (WoS) data-driven bibliometric analysis. Environ Sci Pollut Res Int 2024; 31:109-126. [PMID: 38040882 DOI: 10.1007/s11356-023-31228-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 11/20/2023] [Indexed: 12/03/2023]
Abstract
This paper presents the landscape of research on airborne microplastics and nanoplastics (MPs/NPs) according to the bibliometric analysis of 147 documents issued between 2015 and 2021, extracted from the Web of Science database. The publications on airborne MPs/NPs have increased rapidly from 2015 onwards, which is largely due to the existence of funding support. Science of the Total Environment is one of the prominent journals in publishing related papers. China, England, the USA, and European Countries have produced a significant output of airborne MP/NP research works, which is associated with the availability of funding agencies regionally or nationally. The research hotspot on the topic ranges from the transport of airborne MPs/NPs to their deposition in the terrestrial or aquatic environments, along with the contamination of samples by indoor MPs/NPs. Most of the publications are either research or review papers related to MPs/NPs. It is crucial to share the understanding of global plastic pollution and its unfavorable effects on humankind by promoting awareness of the existence and impact of MPs/NPs. Funding agencies are vital in boosting the research development of airborne MPs/NPs. Some countries that are lacking funding support were able to publish research findings related to the field of interest, however, with lesser research output. Without sufficient fundings, some impactful publications may not be able to carry a substantial impact in sharing the findings and discoveries with the mass public.
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Affiliation(s)
- Huiyi Tan
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Guo Ren Mong
- School of Energy and Chemical Engineering, Faculty of Engineering, Xiamen University Malaysia, Sepang, Xiamen, Selangor, Malaysia
| | - Syie Luing Wong
- Dpto. Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Keng Yinn Wong
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
| | | | - Bemgba Bevan Nyakuma
- Department of Chemistry, Faculty of Sciences, Benue State University, Makurdi, Benue State, Nigeria
- Department of Chemical Sciences, Faculty of Science and Computing, Pen Resource University, P. M. B. 086, Gombe, Gombe State, Nigeria
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Hong Yee Kek
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Ahmad Faizal Abdull Razis
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | | | - Roswanira Abdul Wahab
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Department of Chemistry, Faculty of Sciences, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Kee Quen Lee
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Meng Choung Chiong
- Faculty of Engineering, Technology & Built Environment, UCSI University, Cheras, Kuala Lumpur, Malaysia
| | - Chia Hau Lee
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
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Zainal-Abidin MH, Kristianto S, Esnin SN, Matmin J, Abdul Wahab R, Wan Mahmood WMA, Widodo WT. Green extraction of phenolics using deep eutectic solvents: a promising neoteric method. Nat Prod Res 2023:1-13. [PMID: 38012848 DOI: 10.1080/14786419.2023.2285872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/13/2023] [Indexed: 11/29/2023]
Abstract
There has been a growing emphasis on developing extraction methods that are not only efficient but also environmentally friendly and sustainable. One promising avenue is the exploration of deep eutectic solvents (DESs) as neoteric extraction media. This study aims to investigate the potential of DESs as neoteric extraction media for phenolics-rich flower clove extracts. Two DESs were synthesised by mixing choline chloride with glycerol and lactic acid at a molar ratio of 1:2. The thermal profiles of the mixture were analysed using differential scanning calorimetry, and the viscosity and density were measured at different temperatures. The phenolic compounds were quantitatively characterised for all of the extractants using high-performance liquid chromatography. The total phenolic content and the antioxidant activities of the extracts were determined. The results showed that DESs significantly improved the extraction of antioxidant compounds from clove, especially for the case of phenolic compounds, and also considerably enhanced the antioxidant activity of the extracts. The use of DESs offers a green, efficient method for extracting value-added products from natural sources.
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Affiliation(s)
| | - Sonny Kristianto
- Master in Forensic Sciences, Postgraduate School, Universitas Airlangga, 4-6 Airlangga Rd, Surabaya, Indonesia
- Human Genetic Laboratory, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
| | - Siti Nuresyanah Esnin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Juan Matmin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - Wan M Asyraf Wan Mahmood
- Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangor, Kampus Dengkil, Dengkil, Selangor, Malaysia
| | - Wimbuh Tri Widodo
- Master in Forensic Sciences, Postgraduate School, Universitas Airlangga, 4-6 Airlangga Rd, Surabaya, Indonesia
- Human Genetic Laboratory, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
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Huda N, Ullah S, Wahab RA, Lani MN, Daud NHA, Shariff AHM, Ismail NI, Hamid AAA, Mohamad MAN, Huyop F. The first ITS2 sequence data set of eDNA from honey of Malaysian giant honeybees (Apis dorsata) and stingless bees (Heterotrigona itama) reveals plant species diversity. BMC Res Notes 2023; 16:211. [PMID: 37700361 PMCID: PMC10498584 DOI: 10.1186/s13104-023-06495-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/03/2023] [Indexed: 09/14/2023] Open
Abstract
OBJECTIVES Pollen is a useful tool for identifying the provenance and complex ecosystems surrounding honey production in Malaysian forests. As native key pollinators in Malaysia, Apis dorsata and Heterotrigona itama forage on various plant/pollen species to collect honey. This study aims to generate a dataset that uncovers the presence of these plant/pollen species and their relative abundance in the honey of A. dorsata and H. itama. The information gathered from this study can be used to determine the geographical and botanical origin and authenticity of the honey produced by these two species. RESULTS Sequence data were obtained for both A. dorsata and H. itama. The raw sequence data for A. dorsata was 5 Mb, which was assembled into 5 contigs with a size of 6,098,728 bp, an N50 of 15,534, and a GC average of 57.42. Similarly, the raw sequence data for H. itama was 6.3 Mb, which was assembled into 11 contigs with a size of 7,642,048 bp, an N50 of 17,180, and a GC average of 55.38. In the honey sample of A. dorsata, we identified five different plant/pollen species, with only one of the five species exhibiting a relative abundance of less than 1%. For H. itama, we identified seven different plant/pollen species, with only three of the species exhibiting a relative abundance of less than 1%. All of the identified plant species were native to Peninsular Malaysia, especially the East Coast area of Terengganu. DATA DESCRIPTION Our data offers valuable insights into honey's geographical and botanical origin and authenticity. Metagenomic studies could help identify the plant species that honeybees forage and provide preliminary data for researchers studying the biological development of A. dorsata and H. itama. The identification of various flowers from the eDNA of honey that are known for their medicinal properties could aid in regional honey with accurate product origin labeling, which is crucial for guaranteeing product authenticity to consumers.
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Affiliation(s)
- Nurul Huda
- Faculty of Sustainable Agriculture, Universiti Malaysia Sabah, Sandakan, Sabah, 90509, Malaysia.
| | - Saeed Ullah
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, 81310 UTM, Malaysia.
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, 81310 UTM, Malaysia
| | - Mohd Nizam Lani
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, 21030, Malaysia
| | - Nur Hardy Abu Daud
- Faculty of Sustainable Agriculture, Universiti Malaysia Sabah, Sandakan, Sabah, 90509, Malaysia
| | | | - Norjihada Izzah Ismail
- Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, 81310, Malaysia
| | - Azzmer Azzar Abdul Hamid
- Department of Biotechnology, Kulliyah of Science, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Pahang, 25200, Malaysia
| | - Mohd Azrul Naim Mohamad
- Department of Biotechnology, Kulliyah of Science, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Pahang, 25200, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, 81310 UTM, Malaysia
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Oyewusi HA, Adedamola Akinyede K, Wahab RA, Susanti E, Syed Yaacob SN, Huyop F. Biological and molecular approaches of the degradation or decolorization potential of the hypersaline Lake Tuz Bacillus megaterium H2 isolate. J Biomol Struct Dyn 2023:1-17. [PMID: 37455463 DOI: 10.1080/07391102.2023.2234040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
The presence of synthetic dyes in water bodies and soil is one of the major issues affecting the global ecology, possibly impacting societal well-being adversely due to the colorants' recalcitrance and toxicity. Herein, the study spectrophotometrically monitored the ability of the Bacillus megaterium H2 azoreductase (AzrBmH2) to degrade four synthetic dyes, reactive blue 4, remazol brilliant red, thymol blue, and methyl red, followed by in-silico assessment using GROMACS. We found that the bacterium degraded as much as 60% of all four synthetic dyes at various tested concentrations. The genome analysis revealed five different azoreductase genes, which were then modeled into the AzrBmH21, AzrBmH22/3, and AzrBmH24/5 templates. The AzrBmH2-substrate complexes showed binding energies with all the dyes of between -10.6 to -6.9 kcal/mol and formed 4-6 hydrogen bonds with the predicted catalytic binding residues (His10, Glu 14, Ser 58, Met 99, Val 107, His 183, Asn184 and Gln 191). In contrast, the lowest binding energies were observed for the AzrBmH21-substrates (-10.6 to -7.9). Molecular dynamic simulations revealed that the AzrBmH21-substrate complexes were more stable (RMSD 0.2-0.25 nm, RMSF 0.05 - 0.3 nm) and implied strong bonding with the dyes. The Molecular Mechanics Poisson-Boltzmann Surface Area results also mirrored this outcome, showing the lowest azoreductase-dye binding energy in the order of AzrBmH21-RB4 (-78.18 ± 8.92 kcal/mol), AzrBmH21-RBR (-67.51 ± 7.74 kcal/mol), AzrBmH21-TB (-46.62 ± 5.23 kcal/mol) and AzrBmH21-MR (-40.78 ± 7.87 kcal/mol). In short, the study demonstrated the ability of the B. megaterium H2 to efficiently decolorize the above-said synthetic dyes, conveying the bacterium's promising use for large-scale dye remediation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Department of Science Technology, Biochemistry Unit, The Federal Polytechnic, Ado Ekiti, Nigeria
| | - Kolajo Adedamola Akinyede
- Department of Science Technology, Biochemistry Unit, The Federal Polytechnic, Ado Ekiti, Nigeria
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Department of Applied Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, Indonesia
| | - Evi Susanti
- Department of Applied Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, Indonesia
| | - Syariffah Nuratiqah Syed Yaacob
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
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9
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Hassan A, Numin MS, Jumbri K, Kee KE, Borhan N, Nik Mohamed Daud NMR, Mohammed Nor A, Suhor MF, Abdul Wahab R. Density Functional Theory Studies on New Possible Biobased Gemini Corrosion Inhibitors Derived from Fatty Hydrazide Derivatives. ACS Omega 2023; 8:23945-23952. [PMID: 37426258 PMCID: PMC10324378 DOI: 10.1021/acsomega.3c02435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/09/2023] [Indexed: 07/11/2023]
Abstract
Several new possible biobased corrosion inhibitors derived from fatty hydrazide derivatives were analyzed using quantum chemical calculations via the density functional theory method to investigate the chemical reactivity and inhibition efficiencies against corrosion in metal steel. The study confirmed that the fatty hydrazides showed significant inhibitive performances based on their electronic properties, revealing band gap energies of 5.20 to 7.61 eV between the HOMO and LUMO. These energy differences decreased from 4.40 to 7.20 eV when combined with substituents of varying chemical compositions, structures, and functional groups, associated with higher inhibition efficiency. The most promising fatty hydrazide derivatives are terephthalic acid dihydrazide combined with a long-chain alkyl chain, which resulted in the lowest energy difference of 4.40 eV. Further inspection showed that the fatty hydrazide derivatives' inhibitive performances increased with increasing carbon chain length [from 4 (4-s-4) to 6 (6-s-6)], with a concomitant increase and decrease in hydroxyl and carbonyl groups, respectively. Fatty hydrazide derivatives containing aromatic rings also showed increased inhibition efficiencies following their contribution to improve the compounds' binding ability and adsorption on the metal surface. Overall, all data were consistent with previously reported findings, envisaging the potential of fatty hydrazide derivatives as effective corrosion inhibitors.
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Affiliation(s)
- Almila Hassan
- Department
of Fundamental and Applied Sciences, Universiti
Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia
| | - Mohd Sofi Numin
- Department
of Fundamental and Applied Sciences, Universiti
Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia
| | - Khairulazhar Jumbri
- Department
of Fundamental and Applied Sciences, Universiti
Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia
| | - Kok Eng Kee
- Department
of Mechanical Engineering, Universiti Teknologi
PETRONAS, Seri Iskandar, Perak 32610, Malaysia
| | - Noorazlenawati Borhan
- PETRONAS
Research Sdn. Bhd., Lot
3288 & 3299, Off Jalan Ayer Itam, 43000 Bangi, Selangor, Malaysia
| | | | - Azmi Mohammed Nor
- PETRONAS
Research Sdn. Bhd., Lot
3288 & 3299, Off Jalan Ayer Itam, 43000 Bangi, Selangor, Malaysia
| | - Muhammad Firdaus Suhor
- PETRONAS
Research Sdn. Bhd., Lot
3288 & 3299, Off Jalan Ayer Itam, 43000 Bangi, Selangor, Malaysia
| | - Roswanira Abdul Wahab
- Department
of Chemistry, Universiti Teknologi Malaysia, Johor Bahru 81310 UTM, Malaysia
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10
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Leong CY, Wahab RA, Lee SL, Ponnusamy VK, Chen YH. Current perspectives of metal-based nanomaterials as photocatalytic antimicrobial agents and their therapeutic modes of action: A review. Environ Res 2023; 227:115578. [PMID: 36848977 DOI: 10.1016/j.envres.2023.115578] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/04/2023] [Accepted: 02/24/2023] [Indexed: 05/08/2023]
Abstract
Efforts to restrict the emergence and progression of multidrug-resistant bacterial strains should heavily involve the scientific community, including government bodies, researchers, and industries, in developing new and effective photocatalytic antimicrobial agents. Such changes warrant the modernization and upscaling of materials synthesis laboratories to support and expedite the mass production of materials at the industrial scale for the benefit of humankind and the environment. Despite the massive volume of publications reporting the potential usage of different types of metal-based nanomaterials as antimicrobial agents, reviews uncovering the similarities and differences among the various products remain lacking. This review details the basic and unique properties of metal-based nanoparticles, their use as photocatalytic antimicrobial agents, and their therapeutic modes of action. It shall be noted that compared to traditional antibiotics, the mode of action of photocatalytic metal-based nanomaterials for killing microorganisms are completely different, despite displaying promising performance against antibiotic-resistant bacteria. Besides, this review uncovers the differences in the mode of actions of metal oxide nanoparticles against different types of bacteria, as well as towards viruses. Last but not least, this review comprehensively describes previous published clinical trials and medical usages involving contemporary photocatalytic antimicrobial agents.
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Affiliation(s)
- Cheng Yee Leong
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia; Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Siew Ling Lee
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia; Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, 807, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807, Taiwan; Department of Chemistry, College of Science, National Sun Yat-Sen University (NSYSU), Kaohsiung, 80424, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City, 807, Taiwan; Ph.D. Program of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City, 811, Taiwan.
| | - Yi-Hsun Chen
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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11
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Tze Lin K, Mahat NA, Azman AR, Wahab RA, Oyewusi HA, Abdul Hamid AA. Interaction of the nanobio-based reagent with sodium fluorescein and lipids via bioinformatics for forensic fingerprint visualisations. J Biomol Struct Dyn 2023; 41:15045-15052. [PMID: 36880661 DOI: 10.1080/07391102.2023.2186709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/23/2023] [Indexed: 03/08/2023]
Abstract
Being commonly found at crime scenes, fingerprints are crucial for human identification, attributable to their uniqueness, persistence and systematic classification of ridge patterns. In addition to latent fingerprints being invisible to the naked eye, the escalating trends of disposing forensic evidence bearing such prints in watery bodies would further complicate criminal investigations. Taking into account the toxicity of small particle reagent (SPR) commonly used in visualising latent fingerprints on wet and non-porous objects, a greener alternative using the nanobio-based reagent (NBR) has been suggested. However, NBR only applies to white and/or relatively light-coloured objects. Thus, conjugation of sodium fluorescein dye with NBR (f-NBR) may be beneficial for increasing the contrast of fingerprint on multi-colored objects. Hence, this study was aimed at investigating the possibility of such conjugation (i.e., f-NBR) as well as proposing suitable interactions between the f-NBR and lipid constituents of fingerprints (tetra-, hexa- and octadecanoic acids) via molecular docking and molecular dynamics simulations. The binding energies between CRL with its ligands were observed at -8.1, -5.0, -4.9 and -3.6 kcal/mole for sodium fluorescein, tetra-, hexa- and octadecanoic acids, respectively. Besides, the formations of hydrogen bonds observed in all complexes (ranged between 2.6 and 3.4 Å), further supported by the stabilized root mean square deviation (RMSDs) plots in MD simulations. In short, the conjugation of f-NBR was computationally feasible, and thereby merits further investigations in the laboratory.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Khor Tze Lin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Naji Arafat Mahat
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Aida Rasyidah Azman
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Habeebat Adekilekun Oyewusi
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Azzmer Azzar Abdul Hamid
- Department of Biotechnology, Kuliyyah of Science, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
- Research Unit for Bioinformatics and Computational Biology (RUBIC), Kulliyyah of Science, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
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12
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Hatta MHM, Matmin J, Malek NANN, Kamisan FH, Badruzzaman A, Batumalaie K, Ling Lee S, Abdul Wahab R. COVID‐19: Prevention, Detection, and Treatment by Using Carbon Nanotubes‐Based Materials. ChemistrySelect 2023. [DOI: 10.1002/slct.202204615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Mohd Hayrie Mohd Hatta
- Centre for Research and Development Asia Metropolitan University 81750 Johor Bahru Johor Malaysia
| | - Juan Matmin
- Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
- Centre for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial Research Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
| | - Nik Ahmad Nizam Nik Malek
- Centre for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial Research Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
- Department of Biosciences, Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
| | - Farah Hidayah Kamisan
- Department of Biomedical Sciences Faculty of Health Sciences Asia Metropolitan University 81750 Johor Bahru Johor Malaysia
| | - Aishah Badruzzaman
- Centre for Foundation, Language and General Studies Asia Metropolitan University 81750 Johor Bahru Johor Malaysia
| | - Kalaivani Batumalaie
- Department of Biomedical Sciences Faculty of Health Sciences Asia Metropolitan University 81750 Johor Bahru Johor Malaysia
| | - Siew Ling Lee
- Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
- Centre for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial Research Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia
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13
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Abid MB, Wahab RA, Salam MA, Gzara L, Moujdin IA. Desalination technologies, membrane distillation, and electrospinning, an overview. Heliyon 2023; 9:e12810. [PMID: 36793956 PMCID: PMC9922933 DOI: 10.1016/j.heliyon.2023.e12810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
Water is a critical component for humans to survive, especially in arid lands or areas where fresh water is scarce. Hence, desalination is an excellent way to effectuate the increasing water demand. Membrane distillation (MD) technology entails a membrane-based non-isothermal prominent process used in various applications, for instance, water treatment and desalination. It is operable at low temperature and pressure, from which the heat demand for the process can be sustainably sourced from renewable solar energy and waste heat. In MD, the water vapors are gone through the membrane's pores and condense at permeate side, rejecting dissolved salts and non-volatile substances. However, the efficacy of water and biofouling are the main challenges for MD due to the lack of appropriate and versatile membrane. Numerous researchers have explored different membrane composites to overcome the above-said issue, and attempt to develop efficient, elegant, and biofouling-resistant novel membranes for MD. This review article addresses the 21st-century water crises, desalination technologies, principles of MD, the different properties of membrane composites alongside compositions and modules of membranes. The desired membrane characteristics, MD configurations, role of electrospinning in MD, characteristics and modifications of membranes used for MD are also highlighted in this review.
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Affiliation(s)
- Monis Bin Abid
- Center of Excellence in Desalination Technology, King Abdulaziz University, PO Box 80200, Jeddah, 21589, Saudi Arabia,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia,Department of General Studies, University of Prince Mugrin Al Munawara, Saudi Arabia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia,Enzyme Technology and Green Synthesis Group, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia,Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Malaysia,Corresponding author. Department of Chemistry, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia.
| | - Mohamed Abdel Salam
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O Box 80200, Jeddah, 21589, Saudi Arabia
| | - Lassaad Gzara
- Center of Excellence in Desalination Technology, King Abdulaziz University, PO Box 80200, Jeddah, 21589, Saudi Arabia
| | - Iqbal Ahmed Moujdin
- Center of Excellence in Desalination Technology, King Abdulaziz University, PO Box 80200, Jeddah, 21589, Saudi Arabia,Department of Mechanical Engineering, King Abdulaziz University, P.O. Box 80200, Jeddah, Saudi Arabia
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14
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Oyewusi HA, Akinyede KA, Abdul Wahab R, Huyop F. In silico analysis of a putative dehalogenase from the genome of halophilic bacterium Halomonas smyrnensis AAD6T. J Biomol Struct Dyn 2023; 41:319-335. [PMID: 34854349 DOI: 10.1080/07391102.2021.2006085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Microbial-assisted removal of natural or synthetic pollutants is the prevailing green, low-cost technology to treat polluted environments. However, the challenge with enzyme-assisted bioremediation is the laborious nature of dehalogenase-producing microorganisms' bioprospecting. This bottleneck could be circumvented by in-silico analysis of certain microorganisms' whole-genome sequences to predict their protein functions and enzyme versatility for improved biotechnological applications. Herein, this study performed structural analysis on a dehalogenase (DehHsAAD6) from the genome of Halomonas smyrnensis AAD6 by molecular docking and molecular dynamic (MD) simulations. Other bioinformatics tools were also employed to identify substrate preference (haloacids and haloacetates) of the DehHsAAD6. The DehHsAAD6 preferentially degraded haloacids and haloacetates (-3.2-4.8 kcal/mol) and which formed three hydrogen bonds with Tyr12, Lys46, and Asp182. MD simulations data revealed the higher stability of DehHsAAD6-haloacid- (RMSD 0.22-0.3 nm) and DehHsAAD6-haloacetates (RMSF 0.05-0.14 nm) complexes, with the DehHsAAD6-L-2CP complex being the most stable. The detail of molecular docking calculations ranked complexes with the lowest binding free energies as: DehHsAAD6-L-2CP complex (-4.8 kcal/mol) = DehHsAAD6-MCA (-4.8 kcal/mol) < DehHsAAD6-TCA (-4.5 kcal/mol) < DehHsAAD6-2,3-DCP (-4.1 kcal/mol) < DehHsAAD6-D-2CP (-3.9 kcal/mol) < DehHsAAD6-2,2-DCP (-3.5 kcal/mol) < DehHsAAD6-3CP (-3.2 kcal/mol). In a nutshell, the study findings offer valuable perceptions into the elucidation of possible reaction mechanisms of dehalogenases for extended substrate specificity and higher catalytic activity.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Science Technology, Biochemistry unit, The Federal Polytechnic P.M.B, Ado Ekiti, Ekiti State, Nigeria
| | - Kolajo Adedamola Akinyede
- Department of Science Technology, Biochemistry unit, The Federal Polytechnic P.M.B, Ado Ekiti, Ekiti State, Nigeria.,Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town, South Africa
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
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15
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Gwarzo ID, Mohd Bohari SP, Abdul Wahab R, Zia A. Recent advances and future prospects in topical creams from medicinal plants to expedite wound healing: a review. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2053340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Iliyasu Datti Gwarzo
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
| | - Siti Pauliena Mohd Bohari
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
- Cosmetic and Fragrance Laboratory, Institute of Bioproduct Development, Universiti Teknologi Malaysia, UTM Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia
| | - Arifullah Zia
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Malaysia
- Department of Biology, Faculty of Science, Nangarhar University, Darunta, Jalalabad, Afghanistan
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16
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Numin MS, Hassan A, Jumbri K, Eng KK, Borhan N, Nik M. Daud NMR, M Nor A A, Suhor F, Abdul Wahab R. A recent review on theoretical studies of Gemini surfactant corrosion inhibitors. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Tan H, Wong KY, Othman MHD, Kek HY, Wahab RA, Ern GKP, Chong WT, Lee KQ. Current and potential approaches on assessing airflow and particle dispersion in healthcare facilities: a systematic review. Environ Sci Pollut Res Int 2022; 29:80137-80160. [PMID: 36194323 PMCID: PMC9531230 DOI: 10.1007/s11356-022-23407-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/27/2022] [Indexed: 06/04/2023]
Abstract
An indoor environment in a hospital building requires a high indoor air quality (IAQ) to overcome patients' risks of getting wound infections without interrupting the recovery process. However, several problems arose in obtaining a satisfactory IAQ, such as poor ventilation design strategies, insufficient air exchange, improper medical equipment placement and high door opening frequency. This paper presents an overview of various methods used for assessing the IAQ in hospital facilities, especially in an operating room, isolation room, anteroom, postoperative room, inpatient room and dentistry room. This review shows that both experimental and numerical methods demonstrated their advantages in the IAQ assessment. It was revealed that both airflow and particle tracking models could result in different particle dispersion predictions. The model selection should depend on the compatibility of the simulated result with the experimental measurement data. The primary and secondary forces affecting the characteristics of particle dispersion were also discussed in detail. The main contributing forces to the trajectory characteristics of a particle could be attributed to the gravitational force and drag force regardless of particle size. Meanwhile, the additional forces could be considered when there involves temperature gradient, intense light source, submicron particle, etc. The particle size concerned in a healthcare facility should be less than 20 μm as this particle size range showed a closer relationship with the virus load and a higher tendency to remain airborne. Also, further research opportunities that reflect a more realistic approach and improvement in the current assessment approach were proposed.
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Affiliation(s)
- Huiyi Tan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Keng Yinn Wong
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia.
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor, Malaysia
| | - Hong Yee Kek
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor, Malaysia
- Department of Chemistry, Faculty of Sciences, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Garry Kuan Pei Ern
- School of Health Science, Universiti Sains Malaysia, Kelantan, Malaysia
- Department of Life Sciences, Brunel University, Uxbridge, London, UK
| | - Wen Tong Chong
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Kee Quen Lee
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, 54100, Kuala Lumpur, Malaysia
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18
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Wong KY, Tan H, Nyakuma BB, Kamar HM, Tey WY, Hashim H, Chiong MC, Wong SL, Wahab RA, Mong GR, Ho WS, Othman MHD, Kuan G. Effects of medical staff's turning movement on dispersion of airborne particles under large air supply diffuser during operative surgeries. Environ Sci Pollut Res Int 2022; 29:82492-82511. [PMID: 35751730 DOI: 10.1007/s11356-022-21579-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
The present study examines the effect of medical staff's turning movements on particle concentration in the surgical zone and settlement on the patient under single large diffuser (SLD) ventilation. A computational domain representing the operating room (OR) was constructed using computer-aided design (CAD) software. The airflow and particle models were validated against the published data before conducting the case studies. The airflow in the OR was simulated using an RNG k-ε turbulence model, while the dispersion of the particles was simulated using a discrete phase model based on the Lagrangian approach. A user-defined function (UDF) code was written and compiled in the simulation software to describe the medical staff member's turning movements. In this study, three cases were examined: baseline, SLD 1, and SLD 2, with the air supply areas of 4.3 m2, 5.7 m2, and 15.9 m2, respectively. Results show that SLD ventilations in an OR can reduce the number of dispersed particles in the surgical zone. The particles that settled on the patient were reduced by 41% and 39% when using the SLD 1 and SLD 2 ventilations, respectively. The use of the larger air supply area of SLD 2 ventilation in the present study does not significantly reduce the particles that settle on a patient. Likewise, the use of SLD 2 ventilation may increase operating and maintenance costs.
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Affiliation(s)
- Keng Yinn Wong
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
- Process Systems Engineering Centre, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
| | - Huiyi Tan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Bemgba Bevan Nyakuma
- Department of Chemistry, Faculty of Sciences, Benue State University, Makurdi, Benue State, Nigeria
| | - Haslinda Mohamed Kamar
- School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Wah Yen Tey
- Faculty of Engineering, Technology and Built Environment, USCI University, Kuala Lumpur, Malaysia
| | - Haslenda Hashim
- Process Systems Engineering Centre, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Meng Choung Chiong
- Faculty of Engineering, Technology and Built Environment, USCI University, Kuala Lumpur, Malaysia
| | - Syie Luing Wong
- Dpto. Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Sciences, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Guo Ren Mong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang, Selangor, Malaysia
| | - Wai Shin Ho
- Process Systems Engineering Centre, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Garry Kuan
- School of Health Science, Universiti Sains Malaysia, Penang, Kelantan, Malaysia
- Department of Life Sciences, Brunel University, Uxbridge, London, UK
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19
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Khairul Anuar NFS, Huyop F, Ur-Rehman G, Abdullah F, Normi YM, Sabullah MK, Abdul Wahab R. An Overview into Polyethylene Terephthalate (PET) Hydrolases and Efforts in Tailoring Enzymes for Improved Plastic Degradation. Int J Mol Sci 2022; 23:ijms232012644. [PMID: 36293501 PMCID: PMC9603852 DOI: 10.3390/ijms232012644] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/12/2022] [Accepted: 10/18/2022] [Indexed: 11/18/2022] Open
Abstract
Plastic or microplastic pollution is a global threat affecting ecosystems, with the current generation reaching as much as 400 metric tons per/year. Soil ecosystems comprising agricultural lands act as microplastics sinks, though the impact could be unexpectedly more far-reaching. This is troubling as most plastic forms, such as polyethylene terephthalate (PET), formed from polymerized terephthalic acid (TPA) and ethylene glycol (EG) monomers, are non-biodegradable environmental pollutants. The current approach to use mechanical, thermal, and chemical-based treatments to reduce PET waste remains cost-prohibitive and could potentially produce toxic secondary pollutants. Thus, better remediation methods must be developed to deal with plastic pollutants in marine and terrestrial environments. Enzymatic treatments could be a plausible avenue to overcome plastic pollutants, given the near-ambient conditions under which enzymes function without the need for chemicals. The discovery of several PET hydrolases, along with further modification of the enzymes, has considerably aided efforts to improve their ability to degrade the ester bond of PET. Hence, this review emphasizes PET-degrading microbial hydrolases and their contribution to alleviating environmental microplastics. Information on the molecular and degradation mechanisms of PET is also highlighted in this review, which might be useful in the future rational engineering of PET-hydrolyzing enzymes.
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Affiliation(s)
- Nurul Fatin Syamimi Khairul Anuar
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Ghani Ur-Rehman
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Faizuan Abdullah
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Yahaya M. Normi
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Mohd Khalizan Sabullah
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
- Correspondence: (M.K.S.); (R.A.W.); Tel.: +60-12-267-9021 (M.K.S.); +60-7-551-0363 (R.A.W.); Fax: +60-7-556-6162 (R.A.W.)
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Correspondence: (M.K.S.); (R.A.W.); Tel.: +60-12-267-9021 (M.K.S.); +60-7-551-0363 (R.A.W.); Fax: +60-7-556-6162 (R.A.W.)
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20
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Hui Li AS, Sathishkumar P, Selahuddeen ML, Asyraf Wan Mahmood WM, Zainal Abidin MH, Wahab RA, Mohamed Huri MA, Abdullah F. Adverse environmental effects of disposable face masks due to the excess usage. Environ Pollut 2022; 308:119674. [PMID: 35772616 PMCID: PMC9233961 DOI: 10.1016/j.envpol.2022.119674] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 06/13/2022] [Accepted: 06/20/2022] [Indexed: 06/12/2023]
Abstract
The widespread use of disposable face masks as a preventative strategy to address transmission of the SARS-CoV-2 virus has been a key environmental concern since the pandemic began. This has led to an unprecedented new form of contamination from improperly disposed masks, which liberates significant amounts of heavy metals and toxic chemicals in addition to volatile organic compounds (VOCs). Therefore, this study monitored the liberation of heavy metals, VOCs, and microfibers from submerged disposable face masks at different pH (4, 7 and 12), to simulate distinct environmental conditions. Lead (3.238% ppb), cadmium (0.672 ppb) and chromium (0.786 ppb) were found in the analyzed leachates. By pyrolysis, 2,4-dimethylhept-1-ene and 4-methylheptane were identified as the VOCs produced by the samples. The chemically degraded morphology in the FESEM images provided further evidence that toxic heavy metals and volatile organic compounds had been leached from the submerged face masks, with greater degradation observed in samples submerged at pH 7 and higher. The results are seen to communicate the comparable danger of passively degrading disposable face masks and the release of micro- or nanofibers into the marine environment. The toxicity of certain heavy metals and chemicals released from discarded face masks warrants better, more robust manufacturing protocols and increased public awareness for responsible disposal to reduce the adverse impact on ecology and human health.
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Affiliation(s)
- Alice Sim Hui Li
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Palanivel Sathishkumar
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600 077, India
| | - Muhammad Luqman Selahuddeen
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Wan M Asyraf Wan Mahmood
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Mohamad Hamdi Zainal Abidin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Mohamad Afiq Mohamed Huri
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Faizuan Abdullah
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
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21
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Oyewusi HA, Wu YS, Safi SZ, Wahab RA, Hatta MHM, Batumalaie K. Molecular dynamics simulations reveal the inhibitory mechanism of Withanolide A against α-glucosidase and α-amylase. J Biomol Struct Dyn 2022:1-16. [PMID: 35904027 DOI: 10.1080/07391102.2022.2104375] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Diabetes mellitus (DM) is a global chronic disease characterized by hyperglycemia and insulin resistance. The unsavory severe gastrointestinal side-effects of synthetic drugs to regulate hyperglycemia have warranted the search for alternative treatments to inhibit the carbohydrate digestive enzymes (e.g. α-amylase and α-glucosidase). Certain phytochemicals recently captured the scientific community's attention as carbohydrate digestive enzyme inhibitors due to their low toxicity and high efficacy, specifically the Withanolides-loaded extract of Withania somnifera. That said, the present study evaluated in silico the efficacy of Withanolide A in targeting both α-amylase and α-glucosidase in comparison to the synthetic drug Acarbose. Protein-ligand interactions, binding affinity, and stability were characterized using pharmacological profiling, high-end molecular docking, and molecular-dynamic simulation. Withanolide A inhibited the activity of α-glucosidase and α-amylase better, exhibiting good pharmacokinetic properties, absorption, and metabolism. Also, Withanolide A was minimally toxic, with higher bioavailability. Interestingly, Withanolide A bonded well to the active site of α-amylase and α-glucosidase, yielding the lowest binding free energy of -82.144 ± 10.671 kcal/mol and -102.1043 ± 11.231 kcal/mol compared to the Acarbose-enzyme complexes (-63.220 ± 13.283 kcal/mol and -82.148 ± 10.671 kcal/mol). Hence, the findings supported the therapeutic potential of Withanolide A as α-amylase and α-glucosidase inhibitor for DM treatment.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Science Technology, Biochemistry unit, The Federal Polytechnic, Ado Ekiti, Ekiti State, Nigeria
| | - Yuan-Seng Wu
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, Subang Jaya, Malaysia.,Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Petaling Jaya, Malaysia
| | - Sher Zaman Safi
- IRCBM, COMSATS University Islamabad, Lahore Campus, Punjab, Pakistan
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | | | - Kalaivani Batumalaie
- Department of Biomedical Science, Faculty of Health Sciences, Asia Metropolitan University, Johor Bahru, Johor, Malaysia
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22
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Rajindran N, Wahab RA, Huda N, Julmohammad N, Shariff AHM, Ismail NI, Huyop F. Physicochemical Properties of a New Green Honey from Banggi Island, Sabah. Molecules 2022; 27:molecules27134164. [PMID: 35807409 PMCID: PMC9268174 DOI: 10.3390/molecules27134164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 12/10/2022] Open
Abstract
Green honey is exclusively available on the island of Banggi in Sabah, and its uniqueness sees the commodity being sold at a high market price. Therefore, green honey is prone to adulteration by unscrupulous individuals, possibly compromising the health of those consuming this food commodity for its curative properties. Moreover, an established standard for reducing sugar in green honey is unavailable. Ipso facto, the study aimed to profile green honey’s physical and chemical properties, such as its pH, moisture content, free acidity, ash content, electroconductivity, hydroxymethylfurfural (HMF), total phenolic content, total flavonoid content, DPPH, colour, total sugar content, total protein content, and heavy metals as well as volatile organic compounds, the data of which are profoundly valuable in safeguarding consumers’ safety while providing information for its quality certification for local consumption and export. The results revealed that the honey’s physicochemical profile is comparable to other reported kinds of honey. The honey’s naturally green colour is because of the chlorophyll from the nectar from various flowers on the island. The raw honey showed free acidity between 28 and 33 Meq/100 g, lower than the standard’s 50 Meq/100 g. The hydroxymethylfurfural content is the lowest compared to other reported honey samples, with the total phenolic content between 16 and 19 mg GAE/100 g. The honey’s reducing sugar content is lower (~37.9%) than processed ones (56.3%) because of water removal. The protein content ranged from 1 to 2 gm/kg, 4- to 6-fold and 2-fold higher than local and manuka honey, respectively. The exceptionally high content of trans-4-hydroxyproline in raw honey is its source of collagen and other healing agents. Interestingly, low levels of arsenic, lead, nickel, cadmium, copper, and cobalt were detected in the honey samples, presumably due to their subterranean hives. Nevertheless, the honey is fit for general consumption as the concentrations were below the maxima in the Codex Alimentarius Commission of 2001.
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Affiliation(s)
- Nanthini Rajindran
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Nurul Huda
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia;
- Correspondence: (N.H.); (F.H.)
| | - Norliza Julmohammad
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia;
| | | | - Norjihada Izzah Ismail
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
- Correspondence: (N.H.); (F.H.)
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23
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Vonnie JM, Jing Ting B, Rovina K, Erna KH, Felicia WXL, Nur ‘Aqilah NM, Abdul Wahab R. Development of Aloe Vera-Green Banana Saba-Curcumin Composite Film for Colorimetric Detection of Ferrum (II). Polymers (Basel) 2022; 14:polym14122353. [PMID: 35745929 PMCID: PMC9227415 DOI: 10.3390/polym14122353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/22/2022] [Accepted: 05/29/2022] [Indexed: 12/27/2022] Open
Abstract
This study was performed to develop and characterize a bio-film composed of Aloe vera (Aloe barbadensis), green banana Saba (Musa acuminata x balbisiana), and curcumin for the detection of Fe2+ ions. Cross-linking interaction between banana starch-aloe vera gel and banana starch-curcumin enhanced l the sensing performance of the composite film towards divalent metal ions of Fe2+. The morphological structure of the Aloe vera-banana starch-curcumin composite revealed a smooth and compact surface without cracks and some heterogeneity when observed under Scanning Electron Microscopy (SEM). The thickness, density, color property, opacity, biodegradation, moisture content, water-solubility, water absorption, swelling degree, and water vapor permeability of bio-films were measured. The incorporation of aloe vera gel and curcumin particles onto the banana starch film has successfully improved the film properties. The formation of the curcumin-ferrum (II) complex has triggered the film to transform color from yellow to greenish-brown after interaction with Fe2+ ions that exhibit an accuracy of 101.11% within a swift reaction time. Good linearity (R2 = 0.9845) of response on colorimetric analysis was also obtained in Fe2+ ions concentration that ranges from 0 to 100 ppm, with a limit of detection and quantification found at 27.84 ppm and 92.81 ppm, respectively. In this context, the film was highly selective towards Fe2+ ions because no changes of color occur through naked eye observation when films interact with other metal ions, including Fe3+, Pb2+, Ni2+, Cd2+, and Cu2+. Thus, these findings encourage curcumin-based starch films as sensing materials to detect Fe2+ ions in the field of food and agriculture.
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Affiliation(s)
- Joseph Merillyn Vonnie
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
| | - Bong Jing Ting
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
| | - Kobun Rovina
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
- Correspondence: ; Tel.: +0060-88-320000 (ext. 8713); Fax: +0060-88-320993
| | - Kana Husna Erna
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
| | - Wen Xia Ling Felicia
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
| | - Nasir Md Nur ‘Aqilah
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (J.M.V.); (B.J.T.); (K.H.E.); (W.X.L.F.); (N.M.N.‘A.)
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
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24
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Syed Yaacob SN, Huyop F, Misson M, Abdul Wahab R, Huda N. Exploring the genome of Lactobacillaceae spp. Sy-1 isolated from Heterotrigona itama honey. PeerJ 2022; 10:e13053. [PMID: 35345581 PMCID: PMC8957270 DOI: 10.7717/peerj.13053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 02/12/2022] [Indexed: 01/11/2023] Open
Abstract
Background Honey produced by Heterotrigona itama is highly preferred among consumers due to its high-value as a functional food and beneficial lactic acid bacteria (LAB) reservoir. Fructophilic lactic acid bacteria (FLAB) are a group of LAB with unique growth characteristics and are regarded as promising producers of bioactive compounds. Hence, it is not surprising that LAB, especially FLAB, may be involved with the excellent bioactivity of H. itama honey. With the trending consumer preference for H. itama honey coupled with increasing awareness for healthy food, the genomic background of FLAB isolated from this honey must, therefore, be clearly understood. In this study, one FLAB strain designated as Sy-1 was isolated from freshly collected H. itama honey. Its FLAB behavior and genomic features were investigated to uncover functional genes that could add value to functional food. Methods The fructophilic characteristics of strain Sy-1 were determined, and the genome was sequenced using Illumina iSeq100 and Oxford Nanopore. The average nucleotide identity and phylogenetic analyses based on 16S rRNA, 92 core genes, and whole-genome sequence were performed to unravel the phylogenetic position of strain Sy-1. NCBI Prokaryotic Genome Annotation Pipeline annotated the genome, while the EggNOG-mapper, BLASTKoala, and GHOSTKoala were used to add functional genes and pathways information. Results Strain Sy-1 prefers D-fructose over D-glucose and actively metabolizes D-glucose in the presence of electron acceptors. Genomic annotation of strain Sy-1 revealed few genes involved in carbohydrate transport and metabolism, and partial deletion of adhE gene, in line with the characteristic of FLAB. The 16S rRNA gene sequence of strain Sy-1 showed the highest similarity to unknown LAB species isolated from the gut of honeybees. The phylogenetic analyses discovered that strain Sy-1 belonged to the Lactobacillaceae family and formed a separate branch closer to type strain from the genera of Acetilactobacillus and Apilactobacillus. The ANI analysis showed the similarity of the closest relative, Apilactobacillus micheneri Hlig3T. The assembled genome of Sy-1 contains 3 contigs with 2.03 Mbp and a 41% GC content. A total of 1,785 genes were identified, including 1,685 protein-coding genes, 68 tRNA, and 15 rRNA. Interestingly, strain Sy-1 encoded complete genes for the biosynthesis of folate and riboflavin. High-performance liquid chromatography analysis further confirmed the high production of folic acid (1.346 mg/L) by Sy-1. Discussion Based on phylogenetic and biochemical characteristics, strain Sy-1 should be classified as a novel genus in the family of Lactobacillaceae and a new member of FLAB. The genome information coupled with experimental studies supported the ability of strain Sy-1 to produce high folic acid. Our collective findings support the suitable application of FLAB strain Sy-1 in the functional food and pharmaceutical industries.
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Affiliation(s)
- Syariffah Nuratiqah Syed Yaacob
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia,Enzyme Technology and Green Synthesis Group, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Fahrul Huyop
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia,Enzyme Technology and Green Synthesis Group, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Mailin Misson
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Malaysia
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Group, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Nurul Huda
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Malaysia
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Affiliation(s)
- Adil Omer Baba Shekh
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, Baharu, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, Baharu, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Nur Azzanizawaty Yahya
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, Baharu, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
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26
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Jacob AG, Wahab RA, Chandren S, Jumbri K, Wan Mahmood WMA. Physicochemical properties and operational stability of Taguchi design-optimized Candida rugosa lipase supported on biogenic silica/magnetite/graphene oxide for ethyl valerate synthesis. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Hussin NH, Wahab RA, Elias N, Jacob AG, Zainal-Abidin MH, Abdullah F, Sulaiman NJ, Misson M. Electrospun Magnetic Nanocellulose-Polyethersulfone-Conjugated Aspergillus oryzae Lipase for Synthesis of Ethyl Valerate. Membranes (Basel) 2021; 11:972. [PMID: 34940473 PMCID: PMC8707156 DOI: 10.3390/membranes11120972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 11/20/2022]
Abstract
A novel greener MNC/PES membrane was developed through an electrospinning technique for lipase immobilization to catalyze the synthesis of ethyl valerate (EV). In this study, the covalent immobilization of Aspergillus oryzae lipase (AOL) onto an electrospun nanofibrous membrane consisting of magnetic nanocellulose (MNC) and polyethersulfone (PES) to produce EV was statistically optimized. Raman spectroscopy, Fourier-transform infrared spectroscopy: attenuated total reflection, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, thermal gravimetric analysis (TGA), and differential thermal gravimetric (DTG) of MNC/PES-AOL demonstrated that AOL was successfully immobilized onto the fibers. The Taguchi design-assisted immobilization of AOL onto MNC/PES fibers identified that 1.10 mg/mL protein loading, 4 mL reaction volume, 250 rpm stirring rate, and 50 °C were optimal to yield 72.09% of EV in 24 h. The thermal stability of MNC/PES-AOL was improved by ≈20% over the free AOL, with reusability for up to five consecutive esterification cycles while demonstrating an exceptional half-life of 120 h. Briefly, the electrospun MNC/PES fibers that immobilized AOL showed promising applicability in yielding relatively good EV levels. This study suggests that using MNC as fillers in a PES to improve AOL activity and durability for a longer catalytic process could be a viable option.
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Affiliation(s)
- Nurul Hidayah Hussin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
| | - Nursyafiqah Elias
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
| | - Adikwu Gowon Jacob
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
- Department of Applied Chemistry, Federal University Dutsin-Ma (FUDMA), Dutsin-Ma P.M.B 5001, Katsina State, Nigeria
| | - Mohamad Hamdi Zainal-Abidin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
| | - Faizuan Abdullah
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia; (N.H.H.); (N.E.); (A.G.J.); (M.H.Z.-A.); (F.A.)
| | - Nurul Jannah Sulaiman
- Department of Bioprocess & Polymer Engineering, School of Chemical & Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia;
| | - Mailin Misson
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
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Jacob AG, Wahab RA, Misson M. Operational Stability, Regenerability, and Thermodynamics Studies on Biogenic Silica/Magnetite/Graphene Oxide Nanocomposite-Activated Candida rugosa Lipase. Polymers (Basel) 2021; 13:polym13213854. [PMID: 34771409 PMCID: PMC8587300 DOI: 10.3390/polym13213854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 11/24/2022] Open
Abstract
Inorganic biopolymer-based nanocomposites are useful for stabilizing lipases for enhanced catalytic performance and easy separation. Herein, we report the operational stability, regenerability, and thermodynamics studies of the ternary biogenic silica/magnetite/graphene oxide nanocomposite (SiO2/Fe3O4/GO) as a support for Candida rugosa lipase (CRL). The X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), field-electron scanning electron microscopy (FESEM), vibrating sample magnetometry (VSM), and nitrogen adsorption/desorption data on the support and biocatalyst corroborated their successful fabrication. XPS revealed the Fe3O4 adopted Fe2+ and Fe3+ oxidation states, while XRD data of GO yielded a peak at 2θ = 11.67°, with the SiO2/Fe3O4/GO revealing a high surface area (≈261 m2/g). The fourier transform infrared (FTIR) spectra affirmed the successful fabricated supports and catalyst. The half-life and thermodynamic parameters of the superparamagnetic immobilized CRL (CRL/SiO2/Fe3O4/GO) improved over the free CRL. The microwave-regenerated CRL/SiO2/Fe3O4/GO (≈82%) exhibited higher catalytic activity than ultrasonic-regenerated (≈71%) ones. Lower activation (Ea) and higher deactivation energies (Ed) were also noted for the CRL/SiO2/Fe3O4/GO (13.87 kJ/mol, 32.32 kJ/mol) than free CRL (15.26 kJ/mol, 27.60 kJ/mol). A peak at 4.28 min in the gas chromatograph-flame ionization detection (GC-FID) chromatogram of the purified ethyl valerate supported the unique six types of 14 hydrogen atoms of the ester (CAS: 539-82-2) in the proton nuclear magnetic resonance (1H-NMR) data. The results collectively demonstrated the suitability of SiO2/Fe3O4/GO in stabilizing CRL for improved operational stability and thermodynamics and permitted biocatalyst regenerability.
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Affiliation(s)
- Adikwu Gowon Jacob
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia;
- Department of Applied Chemistry, Federal University Dutsin-Ma (FUDMA), Dutsin-Ma P.M.B. 5001, Katsina State, Nigeria
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia;
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Johor, Malaysia
- Correspondence: or (R.A.W.); (M.M.)
| | - Mailin Misson
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
- Correspondence: or (R.A.W.); (M.M.)
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Romes NB, Abdul Wahab R, Abdul Hamid M, Oyewusi HA, Huda N, Kobun R. Thermodynamic stability, in-vitro permeability, and in-silico molecular modeling of the optimal Elaeis guineensis leaves extract water-in-oil nanoemulsion. Sci Rep 2021; 11:20851. [PMID: 34675286 PMCID: PMC8531315 DOI: 10.1038/s41598-021-00409-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/17/2021] [Indexed: 11/09/2022] Open
Abstract
Nanoemulsion is a delivery system used to enhance bioavailability of plant-based compounds across the stratum corneum. Elaeis guineensis leaves are rich source of polyphenolic antioxidants, viz. gallic acid and catechin. The optimal E. guineensis leaves extract water-in-oil nanoemulsion was stable against coalescence, but it was under significant influence of Ostwald ripening over 90 days at 25 °C. The in-vitro permeability revealed a controlled and sustained release of the total phenolic compounds (TPC) of EgLE with a cumulative amount of 1935.0 ± 45.7 µgcm-2 after 8 h. The steady-state flux and permeation coefficient values were 241.9 ± 5.7 µgcm-2 h-1 and 1.15 ± 0.03 cm.h-1, respectively. The kinetic release mechanism for TPC of EgLE was best described by the Korsmeyer-Peppas model due to the highest linearity of R2 = 0.9961, indicating super case II transport mechanism. The in-silico molecular modelling predicted that the aquaporin-3 protein in the stratum corneum bonded preferably to catechin over gallic acid through hydrogen bonds due to the lowest binding energies of - 57.514 kcal/mol and - 8.553 kcal/mol, respectively. Thus, the in-silico study further verified that catechin could improve skin hydration. Therefore, the optimal nanoemulsion could be used topically as moisturizer to enhance skin hydration based on the in-silico prediction.
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Affiliation(s)
- Nissha Bharrathi Romes
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia.
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia.
| | - Mariani Abdul Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
| | - Habeebat Adekilekun Oyewusi
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Malaysia
| | - Nurul Huda
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu, 88400, Sabah, Malaysia.
| | - Rovina Kobun
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu, 88400, Sabah, Malaysia
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Rameli N, Jumbri K, Ramli A, Abdul Wahab R, Ahmad H, Abdul Rahman MB. Mesoporous Silica Nanoparticle-Templated Ionic Liquid as a Drug Carrier for Ibuprofen and Quercetin. SAINS MALAYS 2021. [DOI: 10.17576/jsm-2022-5108-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this study, a series of mesoporous silica nanoparticle (MSN) was successfully synthesized using different ionic liquids (ILs) as a template. Five ILs and a surfactant with different alkyl side chains and types of anion namely 1-dodecyl-3-methylimidazolium iodide ([C12mim][I]), 3-diethylamino propanol vanillate (DV), 2-butylamino ethanol salicylate (BS), 3-diethylamino propanol salicylate (DS), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([bmim][NTf2]) and hexadecyltrimethylammonium bromide (CTAB) were used. All MSNs produced have broad peaks, indicating mesoporous silica in amorphous form as observed by XRD while the morphology of MSN showed the agglomeration of particles and due to parallel arrangement pores size in both for FESEM and HRTEM. The MSNs are amorphous and displayed Type IV BET isotherm with H2 hysteresis loops which is a typical isotherm for mesoporous materials and the highest surface area obtained was 638 m2/g. The study on uptake and release of ibuprofen and quercetin were carried out, where ibuprofen showed higher drug uptake compared to quercetin due to better interaction of MSN with drug molecules. The drug release conducted at 48 h indicates 33.1% of ibuprofen and 38.4% quercetin released. It can be indicated that MSN-BS is the best for drug loading and release. Drugs release kinetics study indicated that the release process follows the Korsmeyer peppes model. The best efficiency of drug loading for MSN-BS/IBU and MSN-BS/QUE was at 48 h and 25 °C with 250 rpm stirring rate for both IBU and QUE, respectively.
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Oyewusi HA, Huyop F, Wahab RA, Hamid AAA. In silico assessment of dehalogenase from Bacillus thuringiensis H2 in relation to its salinity-stability and pollutants degradation. J Biomol Struct Dyn 2021; 40:9332-9346. [PMID: 34014147 DOI: 10.1080/07391102.2021.1927846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Increased scientific interest has led to the rise in biotechnological uses of halophilic and halotolerant microbes for hypersaline wastewater bioremediation. Hence, this study performed molecular docking, molecular dynamic (MD) simulations, and validation by Molecular Mechanic Poisson-Boltzmann Surface Area (MM-PBSA) calculations on the DehH2 from Bacillus thuringiensis H2. We aimed to identify the interactions of DehH2 with substrates haloacids, haloacetates, and chlorpyrifos under extreme salinity (35% NaCl). MD simulations revealed that DehH2 preferentially degraded haloacids and haloacetates (-6.3 to -4.7 kcal/mol) by forming three or four hydrogen bonds to the catalytic triad, Asp125, Arg201, and Lys202. Conversely, chlorpyrifos was the least preferred substrate in both MD simulations and MM-PBSA calculations. MD simulation results ranked the DehH2-L-2CP complex (RMSD □0.125-0.23 nm) as the most stable while the least was the DehH2-chlorpyrifos complex (RMSD 0.32 nm; RMSF 0.0 - 0.29). The order of stability was as follows: DehH2-L-2CP > DehH2-MCA > DehH2-D-2CP > DehH2-3CP > DehH2-2,2-DCP > DehH2-2,3-DCP > DehH2-TCA > DehH2-chlorpyrifos. The MM-PBSA calculations further affirmed the DehH2-L-2CP complex's highest stability with the lowest binding energy of -45.14 kcal/mol, followed closely by DehH2-MCA (-41.21 kcal/mol), DehH2-D-2CP (-31.59 kcal/mol), DehH2-3CP (-30.75 kcal/mol), DehH2-2,2- DCP (-29.72 kcal/mol), DehH2-2,3-DCP (-22.20 kcal/mol) and DehH2-TCA (-18.46 kcal/mol). The positive binding energy of the DehH2-chlorpyrifos complex (+180.57 kcal/mol) proved the enzyme's non-preference for the substrate. The results ultimately illustrated the unique specificity of the DehH2 to degrade the above-said pollutants under a hypersaline condition.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.,Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, Ado Ekiti, Ekiti State, Nigeria
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Azzmer Azzar Abdul Hamid
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan Pahang, Malaysia
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Affiliation(s)
- Nissha Bharrathi Romes
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
| | - Mariani Abdul Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM, Johor Bahru, Malaysia
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Oyewusi HA, Wahab RA, Huyop F. Whole genome strategies and bioremediation insight into dehalogenase-producing bacteria. Mol Biol Rep 2021; 48:2687-2701. [PMID: 33650078 DOI: 10.1007/s11033-021-06239-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/16/2021] [Indexed: 12/11/2022]
Abstract
An integral approach to decoding both culturable and uncultured microorganisms' metabolic activity involves the whole genome sequencing (WGS) of individual/complex microbial communities. WGS of culturable microbes, amplicon sequencing, metagenomics, and single-cell genome analysis are selective techniques integrating genetic information and biochemical mechanisms. These approaches transform microbial biotechnology into a quick and high-throughput culture-independent evaluation and exploit pollutant-degrading microbes. They are windows into enzyme regulatory bioremediation pathways (i.e., dehalogenase) and the complete bioremediation process of organohalide pollutants. While the genome sequencing technique is gaining the scientific community's interest, it is still in its infancy in the field of pollutant bioremediation. The techniques are becoming increasingly helpful in unraveling and predicting the enzyme structure and explore metabolic and biodegradation capabilities.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
- Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, PMB 5351, Ado Ekiti, Ekiti State, Nigeria.
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
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Wijayati N, Lestari LR, Wulandari LA, Mahatmanti FW, Rakainsa SK, Cahyono E, Wahab RA. Potassium Alum [KAl(SO 4) 2∙12H 2O] solid catalyst for effective and selective methoxylation production of alpha-pinene ether products. Heliyon 2021; 7:e06058. [PMID: 33553744 PMCID: PMC7851781 DOI: 10.1016/j.heliyon.2021.e06058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/19/2020] [Accepted: 01/19/2021] [Indexed: 11/29/2022] Open
Abstract
Methoxylation is a relevant technological process applied in the production of high-value α-pinene derivatives. This report investigates the use of potassium alum [KAl(SO4)2 · 12H2O] as a catalyst in the methoxylation of α-pinene. In this study, the methoxylation reaction was optimized for the highest conversion of α-pinene and selectivity, assessed for the factors, catalyst loading (0.5; 1.0; and 1.5 g), volume ratio of α-pinene: methanol (1:4, 1:7, 1:10), reaction temperature (50, 55, 60 and 65 °C), and reaction time (72, 144, 216, 288, 360 min). The highest selectivity of KAl(SO4)2∙12H2O in the methoxylation of α-pinene was achieved under an optimal condition of 1 g of catalyst loading, volume ratio of 1:10, as well as the reaction temperature and incubation time of 65 °C and 6 h, respectively. GC–MS results revealed the yields of the methoxylated products from the 98.2% conversion of α-pinene, to be 59.6%, 8.9%, and 7.1% for α-terpinyl methyl ether (TME), fenchyl methyl ether (FME), bornyl methyl ether (BME), respectively. It was apparent that a lower KAl(SO4)2∙12H2O loading (0.5–1.5 g) was more economical for the methoxylation reaction. The findings seen here indicated the suitability of the KAl(SO4)2 · 12H2O to catalyze the methoxylation of α-pinene to produce an commercially important ethers.
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Affiliation(s)
- Nanik Wijayati
- Department of Chemistry, Universitas Negeri Semarang, Semarang 50229, Central Java, Indonesia
| | - Lulua Romjanah Lestari
- Department of Chemistry, Universitas Negeri Semarang, Semarang 50229, Central Java, Indonesia
| | | | - F Widhi Mahatmanti
- Department of Chemistry, Universitas Negeri Semarang, Semarang 50229, Central Java, Indonesia
| | - Senda Kartika Rakainsa
- Department of Chemistry, Universitas Negeri Semarang, Semarang 50229, Central Java, Indonesia
| | - Edi Cahyono
- Perhutani Pine Chemical Industry, Pemalang 52319, Central Java, Indonesia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Malaysia.,Enzyme Technology and Green Synthesis Group, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Malaysia
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35
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Yahya NA, Wahab RA, Attan N, Hashim SE, Abdul Hamid M, Mohamed Noor N, Abdul Rahman A. Optimization of oil-in-water nanoemulsion system of Ananas comosus peels extract by D-optimal mixture design and its physicochemical properties. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1839485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nur Azzanizawaty Yahya
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Nursyafreena Attan
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Siti Ernieyanti Hashim
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Mariani Abdul Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Norhayati Mohamed Noor
- Cosmeceutical & Fragrance Unit, Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Anita Abdul Rahman
- Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
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36
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Ishak MAI, Jumbri K, Daud S, Abdul Rahman MB, Abdul Wahab R, Yamagishi H, Yamamoto Y. Molecular simulation on the stability and adsorption properties of choline-based ionic liquids/IRMOF-1 hybrid composite for selective H 2S/CO 2 capture. J Hazard Mater 2020; 399:123008. [PMID: 32502857 DOI: 10.1016/j.jhazmat.2020.123008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
The compatibility and performance of an Isoreticular Metal-Organic Frameworks (IRMOF-1) impregnated with choline-based ionic liquids (ILs) for selective adsorption of H2S/CO2, were studied by molecular dynamics (MD) simulation. Cholinium alanate ([Chl][Ala]) was nominated as the suitable IL for impregnation into IRMOF-1, consistent with the low RMSD values (0.546 nm, 0.670 nm, 0.776 nm) at three IL/IRMOF-1 w/w ratios (WIL/IRMOF-1 = 0.4, 0.8, and 1.2). The [Chl]+ and [Ala]- ion pair was located preferentially around the carboxylate group within the IRMOF-1 framework, with the latter interacting strongly with the host than the [Chl]+. Results of radius of gyration (Rg) and root mean square displacement (RMSD) revealed that a ratio of 0.4 w/w of IL/IRMOF-1 (Rg = 1.405 nm; RMSD = 0.546 nm) gave the best conformation to afford an exceptionally stable IL/IRMOF-1 composite. It was discovered that the IL/IRMOF-1 composite was more effective in capturing H2S and CO2 compared to pristine IRMOF-1. The gases adsorbed in higher quantities in the IL/IRMOF-1 composite phase compared to the bulk phase, with a preferential adsorption for H2S, as shown by the uppermost values of adsorption ( [Formula: see text] = 17.954 mol L-1 bar-1) and an adsorption selectivity ( [Formula: see text] = 43.159) at 35 IL loading.
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Affiliation(s)
- Mohd Adil Iman Ishak
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia
| | - Khairulazhar Jumbri
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia; Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia.
| | - Shaari Daud
- Faculty of Applied Sciences, Universiti Teknologi MARA, Bandar Jengka, 26400, Bandar Tun Razak, Pahang, Malaysia
| | | | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia
| | - Hiroshi Yamagishi
- Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Yohei Yamamoto
- Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
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Romes NB, Wahab RA, Abdul Hamid M, Hashim SE. D-optimal design-assisted Elaeis guineensis leaves extract in olive oil-sunflower seed nanoemulsions: development, characterization, and physical stability. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1839484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nissha Bharrathi Romes
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Mariani Abdul Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
| | - Siti Ernieyanti Hashim
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor, Bahru, Malaysia
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38
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Oyewusi HA, Wahab RA, Huyop F. Dehalogenase-producing halophiles and their potential role in bioremediation. Mar Pollut Bull 2020; 160:111603. [PMID: 32919122 DOI: 10.1016/j.marpolbul.2020.111603] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/21/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
This review aims to briefly describe the potential role of dehalogenase-producing halophilic bacteria in decontamination of organohalide pollutants. Hypersaline habitats pose challenges to life because of low water activity (water content) and is considered as the largest and ultimate sink for pollutants due to naturally and anthropogenic activities in which a substantial amount of ecological contaminants are organohalides. Several such environments appear to host and support substantial diversity of extremely halophilic and halotolerant bacteria as well as halophilic archaea. Biodegradation of several toxic inorganic and organic compounds in both aerobic and anaerobic conditions are carried out by halophilic microbes. Therefore, remediation of polluted marine/hypersaline environments are the main scorching issues in the field of biotechnology. Although many microbial species are reported as effective pollutants degrader, but little has been isolated from marine/hypersaline environments. Therefore, more novel microbial species with dehalogenase-producing ability are still desired.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, PMB, 5351, Ekiti State, Nigeria
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
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Oyewusi HA, Abdul Wahab R, Edbeib MF, Mohamad MAN, Abdul Hamid AA, Kaya Y, Huyop F. Functional profiling of bacterial communities in Lake Tuz using 16S rRNA gene sequences. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1840437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Faculty of Science, Department of Biosciences, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia
- Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, Ekiti State, Nigeria
| | - Roswanira Abdul Wahab
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia
| | - Mohamed Faraj Edbeib
- Faculty of Medical Technology, Department of Medical Laboratories, Baniwalid University, Baniwalid, Libya
| | - Mohd Azrul Naim Mohamad
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan Pahang, Malaysia
| | - Azzmer Azzar Abdul Hamid
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia (IIUM), Kuantan Pahang, Malaysia
| | - Yilmaz Kaya
- Agriculture Faculty, Department of Agricultural Biotechnology, Ondokuz Mayis University, Samsun, Turkey
| | - Fahrul Huyop
- Faculty of Science, Department of Biosciences, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia
- Agriculture Faculty, Department of Agricultural Biotechnology, Ondokuz Mayis University, Samsun, Turkey
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Oyewusi HA, Huyop F, Wahab RA. Molecular docking and molecular dynamics simulation of Bacillus thuringiensis dehalogenase against haloacids, haloacetates and chlorpyrifos. J Biomol Struct Dyn 2020; 40:1979-1994. [PMID: 33094694 DOI: 10.1080/07391102.2020.1835727] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The high dependency and surplus use of agrochemical products have liberated enormous quantities of toxic halogenated pollutants into the environment and threaten the well-being of humankind. Herein, this study performed molecular docking, molecular dynamic (MD) simulations, molecular mechanics-Poisson Boltzmann Surface Area (MM-PBSA) calculations on the DehH2 from Bacillus thuringiensis, to identify the order of which the enzyme degrades different substrates, haloacids, haloacetate and chlorpyrifos. The study discovered that the DehH2 favored the degradation of haloacids and haloacetates (-3.3 - 4.6 kcal/mol) and formed three hydrogen bonds with Asp125, Arg201 and Lys202. Despite the inconclusive molecular docking result, chlorpyrifos was consistently shown to be the least favored substrate of the DehH2 in MD simulations and MM-PBSA calculations. Results of MD simulations revealed the DehH2-haloacid- (RMSD 0.15 - 0.25 nm) and DehH2-haloacetates (RMSF 0.05 - 0.25 nm) were more stable, with the DehH2-L-2CP complex being the most stable while the least was the DehH2-chlorpyrifos (RMSD 0.295 nm; RMSF 0.05 - 0.59 nm). The Molecular Mechanics Poisson-Boltzmann Surface Area calculations showed the DehH2-L-2CP complex (-24.27 kcal/mol) having the lowest binding energy followed by DehH2-MCA (-22.78 kcal/mol), DehH2-D-2CP (-21.82 kcal/mol), DehH2-3CP (-21.11 kcal/mol), DehH2-2,2-DCP (-18.34 kcal/mol), DehH2-2,3-DCP (-8.34 kcal/mol), DehH2-TCA (-7.62 kcal/mol), while chlorpyrifos was unable to spontaneously bind to DehH2 (+127.16 kcal/mol). In a nutshell, the findings of this study offer valuable insights into the rational tailoring of the DehH2 for expanding its substrate specificity and catalytic activity in the near future.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Habeebat Adekilekun Oyewusi
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, Ado Ekiti PMB, Ekiti State, Nigeria
| | - Fahrul Huyop
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Research Group, Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
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Wahab RA, Puspanadan JK, Mahat NA, Azman AR, Ismail D. Potassium triiodide enhanced multi-walled carbon nanotubes supported lipase for expediting a greener forensic visualization of wetted fingerprints. Chem Pap 2020. [DOI: 10.1007/s11696-020-01370-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Lyons D, Wahab RA, Vijapura C, Mahoney MC. The nipple-areolar complex: comprehensive imaging review. Clin Radiol 2020; 76:172-184. [PMID: 33077158 DOI: 10.1016/j.crad.2020.09.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/11/2020] [Indexed: 10/23/2022]
Abstract
The nipple-areolar complex can be affected by a variety of benign and malignant entities that can present with non-specific symptoms. Benign pathologies commonly affecting the nipple-areolar complex include nipple calcifications, nipple adenoma, abscess of Montgomery tubercles, ductal ectasia, periductal mastitis, and papilloma. Malignant pathologies that affect the nipple-areolar complex include Paget's disease of the breast, ductal carcinoma in-situ, and invasive ductal carcinoma. Clinical history and examination, imaging, and tissue sampling when appropriate are co-dependent factors that guide the assessment of nipple-areolar pathologies. This article provides a review of the normal anatomy, common anatomical variants, benign and malignant pathologies, and imaging techniques to guide the diagnostic assessment of the nipple-areolar complex.
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Affiliation(s)
- D Lyons
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, ML 0772, Cincinnati, OH, 45219-0772, USA.
| | - R A Wahab
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, ML 0772, Cincinnati, OH, 45219-0772, USA
| | - C Vijapura
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, ML 0772, Cincinnati, OH, 45219-0772, USA
| | - M C Mahoney
- Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, ML 0772, Cincinnati, OH, 45219-0772, USA
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Abdul Razak NS, Jamalis J, Chander S, Wahab RA, Bhagwat DP, Smith TK, Sankaranarayanan M. Coumarin-Oxadiazole Derivatives: Synthesis and Pharmacological Properties. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666191029111051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Coumarin and oxadiazole moieties ubiquitously occur in a wide range of natural products
and are valued for their varied and beneficial pharmacological activities. Herein, this review focuses
on various documented techniques used by researchers to synthesize an assortment of biologically
active coumarin-oxadiazole scaffolds. Also, the common techniques discussed are used to establish
the wide-range of biological activities of the synthesized coumarin and oxadiozole derivatives,
including; antioxidant, anthelmintic, antimicrobial, anti-tuberculosis, analgesic, anti-inflammatory,
cytotoxicity and anticonvulsant. Additionally, the current, well-established drugs synthesized using
coumarin-oxadiazole scaffolds are typically dispensed in regular clinical practice are also highlighted
in this review paper.
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Affiliation(s)
- Nurhayatun S. Abdul Razak
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Joazaizulfazli Jamalis
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Subhash Chander
- School of Pharmacy, Maharaja Agrasen University, Atal Shiksha Kunj, Village Kalujhanda, Solan-174103, Himachal Pradesh, India
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Deepak P. Bhagwat
- School of Pharmacy, Maharaja Agrasen University, Atal Shiksha Kunj, Village Kalujhanda, Solan-174103, Himachal Pradesh, India
| | - Terry K. Smith
- Schools of Biology & Chemistry, BSRC, The University, St. Andrews, Fife Scotland, KY16 9ST, United Kingdom
| | - Murugesan Sankaranarayanan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science Pilani, Pilani Campus, Pilani-333031, Rajasthan, India
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Azman AR, Mahat NA, Abdul Wahab R, Ahmad WA, Mohamed Huri MA, Abdul Hamid AA, Adamu A, Mat Saat GA. Characterisation and computational analysis of a novel lipase nanobio-based reagent for visualising latent fingerprints on water-immersed glass slides. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abdul Razak FI, Abdul Wahab R, Jamaludin R, Adamu A. Tuning of nonlinear optic response properties for ruthenium alkynyl complexes via computational-guided structural tailoring. Mal J Fund Appl Sci 2020. [DOI: 10.11113/mjfas.v16n4.1682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Hartree Fock (HF) and density functional theory (DFT) methods based on a 3-21G set level were used to computationally assess the nonlinear optic (NLO) response of six ruthenium (Ru) arylalkynyl complexes. The low basis set of 3-21G was proved to provide adequate results with difference of only about 3% between calculation and experimental data. Substitution of Ru-phenyl with six simplified models of Ru-H and Ru-methyl complexes revealed that DFT-based calculations were more accurate than HF in estimating the NLO response. The calculated bond lengths and angles of Ru-methyl were in good agreement with Ru-phenyl. Given that the calculated C≡C stretching vibration and UV-vis maximum absorption for Ru-methyl was comparable to Ru-phenyl, with values corresponding to 2154.56 cm-1 and 460.93 nm, respectively. It was evident that Ru-H, Ru-methyl and Ru-phenyl complexes undergo intraligands π-π* and Laporte forbidden metal d-d transition. Henceforth, it is affirmed that calculations using simplified Ru-H complexes were as much as reliable as the full structure of Ru to assess the NLO response. Assessment of electron inductive effect on Ru-carbonyl (Ru-Co), Ru-cyclopentadienyl (Ru-Cp) and Ru- bipyridine (Ru-bpy) complexes revealed two absorption maxima that appeared in regions 320−375 nm and 382−460 nm, which represent an intraligand π-π* orbital and Laporte forbidden d-d-transition, respectively. Migration of electrons from Ru center to the bipyridine ligand suggests a greater electron acceptor effect than Ru center to the arylalkynyl group. However, Ru conjugated to an electron withdrawing group i.e. carbonyl tend to render lower NLO response while elevating HOMO - LUMO energy gap and Ru to Cα bond lengths.
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Teo HL, Wahab RA. Towards an eco-friendly deconstruction of agro-industrial biomass and preparation of renewable cellulose nanomaterials: A review. Int J Biol Macromol 2020; 161:1414-1430. [PMID: 32791266 DOI: 10.1016/j.ijbiomac.2020.08.076] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 12/21/2022]
Abstract
There is an array of methodologies to prepare nanocellulose (NC) and its fibrillated form (CNF) with enhanced physicochemical characteristics. However, acids, bases or organosolv treatments on biomass are far from green, and seriously threaten the environment. Current approach to produce NC/CNF from biomass should be revised and embrace the concept of sustainability and green chemistry. Although hydrothermal process, high-pressure homogenization, ball milling technique, deep eutectic solvent treatment, enzymatic hydrolysis etc., are the current techniques for producing NC, the route designs remain imperfect. Herein, this review highlights the latest methodologies in the pre-processing and isolating of NC/CNF from lignocellulose biomass, by largely focusing on related papers published in the past two years till date. This article also explores the latest advancements in environmentally friendly NC extraction techniques that cooperatively use ball milling and enzymatic hydrolytic routes as an eco-efficient way to produce NC/CNF, alongside the potential applications of the nano-sized celluloses.
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Affiliation(s)
- Hwee Li Teo
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
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Ramli F, Hamid MA, Wahab RA, Ismail IS, Karunakaran T. Ultrasonic-Assisted Extraction of Phalerin from Phaleria macrocarpa: Response Surface Methodology and Artificial Neural Network Modelling. Arab J Sci Eng 2020. [DOI: 10.1007/s13369-020-04639-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Syed Yaacob SN, Wahab RA, Huyop F, Lani MN, Zin NM. Morphological alterations in gram-positive and gram-negative bacteria exposed to minimal inhibitory and bactericidal concentration of raw Malaysian stingless bee honey. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1788421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Fahrul Huyop
- Department of Bioscience, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor Bahru, Johor, Malaysia
| | - Mohd Nizam Lani
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
| | - Noraziah Mohamad Zin
- Programme of Biomedical Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Onoja E, Wahab RA. Robust Magnetized Oil Palm Leaves Ash Nanosilica Composite as Lipase Support: Immobilization Protocol and Efficacy Study. Appl Biochem Biotechnol 2020; 192:585-599. [PMID: 32495234 DOI: 10.1007/s12010-020-03348-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/22/2020] [Indexed: 12/07/2022]
Abstract
Strategies to immobilize the individual enzymes are crucial for enhancing catalytic applicability and require a controlled immobilization process. Herein, protocol for immobilizing Candida rugosa lipase (CRL) onto modified magnetic silica derived from oil palm leaves ash (OPLA) was optimized for the effects of concentration of CRL, immobilization time, and temperature, monitored by titrimetric and spectrometric methods. XRD and TGA-DTG spectrometric observations indicated that OPLA-silica was well coated over magnetite (SiO2-MNPs) and CRLs were uniformly bound by covalent bonds to SiO2-MNPs (CRL/Gl-A-SiO2-MNPs). The optimized immobilization protocol showed that in the preparation of CRL/Gl-A-SiO2-MNPs, CRL with 68.3 mg/g protein loading and 74.6 U/g specific activity was achieved using 5 mg/mL of CRL, with an immobilization time of 12 h at 25 °C. The present work also demonstrated that acid-pretreated OPLA is a potential source of renewable silica, envisioning its applicability for practical use in enzymatic catalysis on solid support.
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Affiliation(s)
- Emmanuel Onoja
- Department of Science Laboratory Technology, The Federal Polytechnic, P.M.B. 1012, Kaura Namoda, Zamfara State, Nigeria. .,Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Malaysia.
| | - Roswanira Abdul Wahab
- Enzyme Technology and Green Synthesis Group, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Malaysia. .,Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Malaysia.
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