Dr. Erna Normaya Abdullah is an Associate Professor at International Islamic University Malaysia. She received her Ph.D. in Chemistry from Universiti Kebangsaan Malaysia (UKM) in 2015. Her primary research interest is to help the community by developing a cost-effective, movable, and easy-to-handle eco-friendly sensor for detecting toxic elements in environmental water, which requires no special training. This research follows the Sustainable Development Goal (SDG) of providing clean water and sanitation for the community. Chemosensors are being developed to detect hazardous metal ions at an early stage and water resources may be monitored effectively. Besides involves in chemosensor research, she also conducts research for the oil and gas industry that related to solve corrosion problems by using organic inhibitors, which is more environmentally friendly. She also uses computational chemistry software such as Gaussion09, GaussView05, Autodock Vina, and Materials Studio to visualize, analyze, and explain invisible phenomena that occur in chemistry-related research. By combining experimental and theoretical approaches, her research outcomes (WOS-articles) were successfully published in several reputable publishers such as Elsevier, Springer-Nature, Royal Society of Chemistry (RSC), American Chemical Society (ACS), Springer, and Wiley. Due to her research interests/expertise in computational chemistry, synthetic and analytical chemistry, as well as drug and food inhibitors, she has served as a manuscript reviewer for several international and reputable publishers, such as Elsevier, Springer, and Emerald. She is also one of the Institut Kimia Malaysia (IKM) members. According to the Laws of Malaysia, Act 158, Chemist Act 1975, she qualified to produce official chemical analyses for industry and the community without approval from government agencies.

• Natural Science ~ Chemical Sciences ~ Physical Chemistry ~ Theoretical Chemistry - DFT approach
• Natural Science ~ Chemical Sciences ~ Physical Chemistry ~ Other Physical Chemistry n.e.c. - Corrosion
• Natural Science ~ Chemical Sciences ~ Inorganic Chemistry ~ Other Inorganic Chemistry n.e.c. - Synthesis Inorganic Compound
• Natural Science ~ Chemical Sciences ~ Analytical Chemistry ~ Sensor Technology (Chemical Aspects) - Chemosensor

ADVANCE ANALYTICAL METHODS FOR HALAL HARAM PRODUCTS	2018/2019
CHEMISTRY OF FATS AND OILS	2021/2022 2017/2018 2016/2017 2015/2016
Chemistry of Fats, Oils and Emulsifiers	2025/2026 2024/2025 2023/2024 2022/2023
Computational Chemistry	2025/2026 2024/2025 2023/2024 2022/2023
EMULSIFIERS AND SURFACTANTS	2021/2022 2017/2018 2016/2017
Final Year Project 1	2024/2025
Final Year Project 2	2024/2025
FINAL YEAR PROJECT I	2021/2022 2020/2021
FINAL YEAR PROJECT II	2020/2021
FLAVOURS AND FRAGRANCES	2021/2022 2020/2021 2018/2019 2017/2018 2016/2017
FOOD CHEMISTRY & BIOTECHNOLOGY	2019/2020
Food Chemistry and Safety	2025/2026 2024/2025
HALAL AND HARAM IN FOOD INGREDIENTS AND PROCESSING	2021/2022 2019/2020 2018/2019
Halal Food Authentication and Traceability Techniques	2024/2025 2023/2024 2022/2023
Halal Food Processing & Regulations	2024/2025 2023/2024 2022/2023
Halal Foods & Related Products	2024/2025 2023/2024
HALAL FOODS AND RELATED PRODUCTS	2022/2023 2021/2022 2017/2018 2016/2017
Industrial Training	2024/2025 2023/2024
INDUSTRIAL TRAINING/INTERNSHIP	2022/2023 2021/2022 2020/2021 2017/2018 2016/2017
INORGANIC CHEMISTRY I	2019/2020 2015/2016
Inorganic Chemistry 1	2024/2025 2023/2024 2022/2023
Inorganic Chemistry 2	2021/2022
INORGANIC CHEMISTRY II	2020/2021 2019/2020 2018/2019 2017/2018 2016/2017 2015/2016
ORGANOMETALLIC & BIOINORGANIC CHEMISTRY	2019/2020 2018/2019 2017/2018 2016/2017 2015/2016
PROJECT SEMINAR	2017/2018
RESEARCH METHODOLOGY	2023/2024 2020/2021 2017/2018

Synthetization And Characterization Of Thiosemicarbazone Derivatives For Corrosion Inhibitor Applications. Ph.D Completed 2023 Main Supervisor

Optimization Of Vanilin-Based Chalcone Compounds As Colorimetric Metal Ions Recognitions In Environmental Water Using Statistical Approach. Ph.D In Progress Main Supervisor

Optimization Of Thiosemicarbazone Derivatives As Colorimetric Chemosensor For Metal Ions Recognitions Using Response Surface Methodology And Dft Study. Ph.D In Progress Main Supervisor

Ammonia Capture Using Effective And Sustainable Oil Palm Waste-Derived Nanobiochar: Ai-Driven Optimization And Dft-Based Mechanistics Understanding. Ph.D In Progress Co-supervisor

Experimental And Theoretical Insight Into Adsorption Mechanism Of Thiosemicarbazone Functionalized Chitosan As An Effective Nanoadsorbent For Heavy Metals Ions Removal In Aqueous Medium. Ph.D In Progress Co-supervisor

Physiocochemical Properties, Structure-Property Relationship And Mechanistic Insights Into The Adsorption Of Organic Pollutants Using Green Organic Acid-Functionalized Seafood Waste-Derived Nanobiochar. Ph.D In Progress Co-supervisor

Multifunctional Food Spoilage Inhibitors Using Heteroatomic Linked Thiosemicarbazone Scaffold: Synthesis And Theoretical Studies. Master Completed 2024 Co-supervisor

Structure-Activity Relationship And Mechanistic Reaction Study Of Food Spoilage Inhibition Using Bifunctional Hetero-Aromatic Thiosemicarbazones Derivatives. Master Completed 2024 Co-supervisor

Development Of Colorimetric Chemosensors For Metal Ions Recognition In Aqueous Environment Using Statistical Approach. Master Completed 2021 Main Supervisor

Development And Optimization Of Organic-Based Chemosensor For Cation And Anion Recognition In Aqueous Medium. Master Completed 2021 Main Supervisor

Thiosemicarbazone Derivatives Synthesis As A Potent Alternative To Skin Disease Inhibitor: Experimental And Theoretical Approach . Master Completed 2020 Co-supervisor

Characterization Of Functional Food Addictives From Cashew Apples (Anarcardium Occidentale). Master Completed 2020 Co-supervisor

Optimisation Of Supercritical Fluid Extraction (Sfe) And Inhibition Of Α-Amylase And Α-Glucosidase For The Green Formulation Of Diabetes Supplement Using Ai Approach. Master In Progress Co-supervisor

Completed

2020 - 2022	Development of Bio Compost Char
2019 - 2023	Analysis of Blackwater Treatment of the Green Toilet System in Auto-City, Penang
2019 - 2022	Chemosensor Development for Metal Ions Recognition in Lake and River Water Samples
2019 - 2023	Optimizing and Mechanistic Interaction Studies of a Fluorescent Chemosensor for Metal-Ion Recognition in Aqueous Media and Living Cells using Linked Thiosemicarbazone?PAHs: Experimental and Theoretical Approaches
2016 - 2020	Synthesis, Characterization and Reaction Mechanism Study of a Novel HIV Protease Inhibitor from a Sugar-based Thiosemicarbazone Series using Density Functional Theory
2015 - 2019	Density Functional Theory Studies on Synthesis, Characterization and Antibacterial Activity of Heteroaromatic Substitution on 4N-Sulfonamide Thiosemicarbazones
2015 - 2019	Supercritical Fluids Extraction Method Development for Extraction of a New Potential Halal Protease from Anacardium occidentale Fruit

On-Going

2025 - Present	Smart Food Waste Composting Machine Project
2025 - Present	Knowledge Transfer Programme: Gotong-Royong in Bulan Ramadhan with Halal and Tauhid Values
2025 - Present	Chemical Health Risk Assessment (CHRA) Conducted at Selected Plantations in Raub, Rompin and Pekan
2025 - Present	Characterization and Analysis of Activated Carbon
2025 - Present	CHEMICAL HEALTH RISK ASSESSMENT (CHRA) CONDUCTED AT SELECTED BANK RAKYAT IN MALAYSIA
2024 - Present	Nanoplasmonic sensor for mycotoxin detection in food using metabolite-functionalized gold nanoparticles: physicochemical properties, structure?property relationships, and mechanistic insights.
2024 - Present	Development of Green and Halal Nutraceutical Products
2024 - Present	Physiochemical, Structure-Property Relationship and Mechanistic Insights into Adsorption of Ammonia Using Organic Acid Functionalized Oil Palm Waste-Derived Nanobiochar
2021 - Present	Structure-Activity Relationship and Mechanistic Reaction Study of Food Spoilage lnhibition Using Phenolic Aldehyde-Based Thiosemicarbazone Scaffold
2021 - Present	Structure?Activity Relationship and Mechanistic Reaction Study of Food Spoilage Inhibition Using Antioxidant-Linked Thiosemicarbazone Scaffold

Articles

2025	Environmental friendly polymer based recycled Nitrile Gloves Incorporated with poly(lactic acid)/graphene nanoplatelets binary blends. Journal of Applied Polymer Science, 142 (15) pp.
2025	Synthesis of bioactive Schiff base thiosemicarbazone analogs with quinoline for high-performance copper corrosion inhibition: Insights from RSM-assisted EIS, XPS, DFT, and MD studies. Journal of Molecular Structure, 1345 () pp. 1-16
2024	A comparative study of impact fracture toughness of epoxidized poly(1, 4 cis-isoprene) compatibilized PLA binary and ternary blends. Chemical Engineering & Technology, 0 (0) pp. 1-10
2024	Chemometric assisted green extraction of tyrosinase inhibitor from Durio zibethinus rind for skin whitening agents in cosmetic products. The Journal of Supercritical Fluids, 214 (106393) pp. 1-14
2024	Development of chemometric-assisted supercritical fluid extraction of effective and natural tyrosinase inhibitor from Syzygium aqueum leaves. International Journal of Biological Macromolecules, 258 (2) pp. 1-14
2024	In-depth investigation of corrosion inhibition mechanism: computational, electrochemical, and theoretical studies of vanillin meldrum’s acid on mild steel surface in 1 M HCl. Journal of Molecular Liquid, 416 () pp. 1-26
2024	Methyl 4-pyridyl ketone thiosemicarbazone (4-PT) as an effective and safe inhibitor of mushroom tyrosinase and antibrowning agent. International Journal of Biological Macromolecules, 255 () pp. 1-16
2024	Optimization and mechanistic insight of phenol removal using an effective green kaolin adsorbent through experimental and computational approaches. Journal of Molecular Structure, 1318 () pp. 139219
2024	Spectroscopic, crystal structure, hirshfeld surface and dft studies of 2-amino-4-chlorobenzonitrile. Malaysian Journal of Analytical Science, 28 (1) pp. 21-32
2024	Synthesis, spectroscopic characterizations, TD/DFT calculations, colorimetric metal ions, and molecular docking studies of a novel 3-ace-tylpyridine 2-hyrdoxyphenyl thiosemicarbazone. Journal of Molecular Structure, 1316 () pp.
2023	(1E)-1-(2-pyrazinyl)ethanone thiosemicarbazone (PT) as a tyrosinase inhibitor with anti-browning activity: Spectroscopy, DFT and molecular docking studies. Journal of Molecular Structure, 1291 () pp.
2023	Modifications of poly(lactic acid) with blends and plasticization for tenacity and toughness improvement. Indonesian Journal of Chemistry, 23 (4) pp. 1161-1180
2023	Preparation and characterization of poly(lactic acid)/linear low density polyethylene/recycled tire waste/graphene nanocomposites. Materials Today: Proceedings, () pp.
2023	Structural, optimization of and mechanistic insights into a new thiosemicarbazone derivative as a highly sensitive and selective chemosensor for Hg2+ recognition using DFT, COSMO-RS, RSM, and molecular dynamics simulation approaches. Spectrochima Acta Part A : Molecular and Biomolecular Spectroscopy, 304 () pp. 1-13
2022	Gravimetric and electrochemical statistical optimizations for improving copper corrosion resistance in hydrochloric acid using thiosemicarbazone-linked 3-acetylpyridine. RSC Advances, 12 (43) pp. 27793-27808
2021	A highly sensitive and selective thiosemicarbazone chemosensor for detection of ­Co2+ in aqueous environments using RSM and TD/DFT approaches. Scientific Reports-Nature, 11 () pp. 1-12
2021	Mechanical properties of poly(lactic acid) compounded with recycled tyre waste/graphene nanoplatelets nanocomposite. Materials Today: Proceedings, 42 () pp. 265-269
2021	Ni(II) Butylmethyldithiocarbamate Physico-Chemical Properties, X-Ray Crystallography, DFT and anti-corrosion screening in different acids. ASM Science Journal, 16 () pp.
2021	Statistical study on the interaction factors of polypropylene-graft-maleic anhydride (PP-g-MA) with graphene nanoplatelet (GNP) at various Poly(Lactic Acid)/Polypropylene (PLA/PP) blends ratio. Indonesian Journal of Chemistry, 21 (1) pp. 234-242
2021	Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium. ACS Omega, () pp. A-N
2020	Artocarpus altilis extracts as a foodborne pathogen and oxidation inhibitors: RSM, COSMO RS, and molecular docking approaches. Scientific Reports, 10 (1) pp. 1-14
2020	DFT/TD-DFT study on development and optimization of 1- anilino-3- phenyliminourea as a colorimetric chemosensor for Hg2+ recognition in aqueous medium. Journal of Molecular Structure, 1206 () pp. 1-7
2020	Inhibitory effects of Manihot esculenta extracts on food-borne pathogens and their antioxidant properties: supercritical fluid extraction, statistical analysis, and molecular docking study. Journal of Food Process Engineering, e13452 () pp.
2020	Optimization of a protease extraction using a statistical approach for the production of an alternative meat tenderizer from Manihot esculenta roots. Journal of Food Science and Technology, 57 (8) pp. 2852-2862
2020	Poly(lactic acid)/acrylonitrile butadiene styrene nanocomposites with hybrid graphene nanoplatelet/organomontmorillonite: effect of processing temperatures. International Polymer Processing, 35 (4) pp. 355-366
2020	Silver(I) dicyanonitrosomethanide, Ag[ONC(CN)2] complex as catalyst for the selective oxidation of styrene to benzaldehyde. Science Letters, 14 (2) pp. 74-87
2020	Synthesis of thiosemicarbazone-based colorimetric chemosensor for Cu2+ ions’ recognition in aqueous medium: Experimental and theoretical studies. Journal Of Molecular Structure, 1212 () pp. 1-10
2020	The applicability of using a protease extracted from cashew fruits (Anacardium occidentale), as possible meat tenderizer: an experimental design approach. Journal of Texture Studies, () pp.
2019	Adsorption study on the removal of copper ions from aqueos solution using sodium hydroxide-modified Carica papaya peels. MalaysianJournal of Analytical Sciences, 23 (6) pp. 926-937
2019	Chemosensor development of Cu2+ recognition using 1,5-diphenylthiocarbazone: optimization, COSMO-RS and DFT studies. Journal of The Brazilian Chemical Society, 30 (9) pp. 1850-1859
2019	COSMO-RS and DFT studies on development and optimization of quercetin as a chemosensor for Fe3þ recognition in aqueous medium. Journal Of Molecular Structure, 1184 () pp. 538-545
2019	Optimization of a protease extraction using a statistical approach for the production of an alternative meat tenderizer from Spondias cytherea roots. Journal of Food Processing and Preservation, 43 (11) pp. 1-14
2019	The effect of vanillin on the oxidative stability of palm olein. Malaysian Journal Of Analytical Sciences, 23 (5) pp. 861-869
2018	Synthesis, characterization and preliminary study on acetylpyrazine N(4)butylthiosemicarbazone as a potential CDK2 inhibitor combined with DFT calculations. Journal of Brazilian Chemical Society, 29 (10) pp. 2197-2206
2018	Synthesis, structural, density functional theory, and X-ray diffraction study Of ZN(II) N-isopropylbenzyldithiocarbamate: anti-corrosion screening in acid media. Indonesia Journal of Chemistry, 18 (4) pp. 755-765
2013	Density functional theory studies on vibrational spectra (E)-N-(4-carboxylphenyl)-2-(1-(pyrazin-2- yl)ethylidene) hydrazinecarbothioamide. Malaysia Journal of Chemistry, 15 (1) pp. 033-040
2011	3-(2-Hydroxyphenyl)-1-{(E)-[1-(pyrazin- 2-yl)ethylidene]amino}thiourea monohydrate. Acta Crystallographica Section E: Crystallographic Communications, 67 (4) pp. o943-o944

Conference or Workshop Items

2023	Modification of Carica papaya seeds with NaOH for copper removal from water. In: 3rd IKMPB Online Symposium 2023 - Innovation in Chemistry Towards Sustainable Development,
2023	Optimization of protease extraction from ridged gourd (Luffa acutangula) sarcocarp via response surface methodology. In: 3 rd IKMPB Online Symposium 2023 - Innovation in Chemistry Towards Sustainable Development),
2023	Sustainable green poly(lactic acid) (PLA)/eggshell powder (ESP) biocomposites. In: 8th International Conference on Architecture, Materials and Construction, ICAMC 2022,
2021	2-acetylpyrazine thiosemicarbazone as multifunctional food spoilage inhibitor: insights from Tyrosinase Kinetic, microbial activity and computational approaches. In: 33rd International Conference of Analytical Sciences (SKAM33),
2021	Experimental and Theoretical Study on Adsorption Mechanism of Polyvinylpolypyrrolidone (PVPP) for Effective Phenol Removal in an Aqueous Medium. In: 33rd International Conference of Analytical Sciences (SKAM33): Green Aspirations: The Way Forward for a Sustainable World,
2020	Durio zibethinus rind as tyrosinase inhibitor for skin whitening agents in cosmetic products: RSM, COSMO-RS, PCA and molecular docking studies. In: Virtual Symposium on Science 2020,
2020	Statistical analysis study on optimization of 4-acetylpyridine thiosemicarbazone as corrrosion inhibitor. In: Virtual Symposium on Sciences 2020 (VSoS 2020),
2019	2-acetylthiophene thiosemicarbazone as mushroom tyrosinase inhibitor: insights from kinetic, RDG, molecular docking, and DFT studies. In: International Conference in Organic Synthesis 2019 (ICOS2019),
2019	Chemosensor development for cobalt ion recognition using 2-acetylpyrazine thiosemicarbazone: experimental and theoretical approach. In: 32nd International Conference of Analytical Sciences (SKAM32),
2019	Preliminary study on developing 1,5-Diphenylcarbozone as a chemosensor againts Hg2+ ions recognition in aqueous media. In: International Conference on Clean Water, Air and Soil (CLEANWAS 2019),
2019	Preliminary study in discovering 2-geranylphenol from Lansium domesticum leaves as oxidation and tyrosinase inhibitor for anti-aging and skin whitening agents: experimental and theoretical study. In: The 32nd Symposium of Malaysia Analytical Sciences : Simposium KImia Analisis Malaysia (SKAM 32),
2019	Preliminary study in discovering 2-propen-1-one, 1-(2,4-dihydroxyphenyl)-3-(4-methoxyphenyl)- from syzygium aqueum leaves as a tyrosinase inhibitor in food product: experimental and theoretical approach. In: International Conference on Clean Water, Air and Soil (CLEANWAS 2019),
2019	Salasa adulis as a novel dual-functional food additive for antimicrobial and antioxidant properties: experimental and theoretical approach. In: The 32nd Symposium of Malaysia Analytical Sciences : Simposium KImia Analisis Malaysia (SKAM 32),
2019	Thermal stability of melt-blended poly (lactic acid) (PLA)/polyamide 66 (PA66)/graphene nanoplatelets (GnP). In: 1st Process Systems Engineering & Safety (ProSES) Symposium 2019,
2018	Chemosensor development of cu2+ recognition using 1,5-diphenylcarbazone: optimization, cosmo-RS and DFT studies. In: International Conference of Analytical Sciences (SKAM31),
2018	Chemosensor development using 2-acetylpyrrole thiosemicarbazone for cu2+ ion recognition in aqueous medium: experimental and theoretical studies. In: International Conference of Analytical Sciences (SKAM31),
2018	Discovery and development of halal protease from Spondias cytherea for meat tenderization. In: International Conference of Analytical Sciences (SKAM31),
2018	Statistical analysis and molecular docking study on halal potential antioxidant from anacardium occidentale fruits. In: International Conference of Analytical Sciences (SKAM31),
2018	Synthesis, characterization,reaction mechanism and theoreticalstudy of anntimicrobial inhibitor from heteroaromatics based thiosemicarbazone. In: International Conference of Analytical Sciences (SKAM31),
2017	Adsorption study on the removal of cu ions from aqueous solution using NAOH-modified Carica papaya peels. In: International Conference of Analytical Sciences (SKAM30),
2017	Extraction of protease from Anacardium occidentale (Cashew) fruit using response surface methodology. In: 6th International Conference on Advancement in Science and Technology (iCAST 2017),

Books

2014	Protease extraction from Horse mango (Mangifera foetida lour) kernels. LAP Lambert Academic Publishing, ISBN: 978-659-58540-1

Book Sections

2021	Chemometric study to discover dual-functional food spoilage inhibitors from Polygonum minus extract. In: UKM Publisher, ISBN: 978-967-251-467-1, pp. 95-99
2021	Chemometric study to discover dual-functional food spoilage inhibitors from Polygonum minus extract. In: UKM Publisher, ISBN: 978-967-251-467-1, pp. 95-99
2019	Optimization of research and manufacturing processes in product and service. In: Universiti Malaysia Pahang, ISBN: 9789672226505, pp. 128-141

Monograph

2018	Density functional theory studies on synthesis, chracterization and antibacterial activity of heteroaromatic substitution on 4n-thiosemicarbazone. In: ,