Search Results - "Lee Yook Heng"

A Colorimetric pH Sensor Based on Clitoria sp and Brassica sp for Monitoring of Food Spoilage Using Chromametry by Ahmad, Noor Azizah, Yook Heng, Lee, Salam, Faridah, Mat Zaid, Mohd Hazani, Abu Hanifah, Sharina

“…A developed colorimetric pH sensor film based on edible materials for real-time monitoring of food freshness is described. The mixed natural dyes from edible…”
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Novel DNA Biosensor for Direct Determination of Carrageenan by Hassan, Riyadh Abdulmalek, Heng, Lee Yook, Tan, Ling Ling

“…A novel disposable electrochemical biosensor based on immobilized calf thymus double-stranded DNA (dsDNA) on the carbon-based screen-printed electrode (SPE) is…”
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A New Sensor for Methyl Paraben Using an Electrode Made of a Cellulose Nanocrystal-Reduced Graphene Oxide Nanocomposite by Wan Khalid, Wan Elina Faradilla, Mat Arip, Mohamad Nasir, Jasmani, Latifah, Lee, Yook Heng

“…A new cellulose nanocrystal-reduced graphene oxide (CNC-rGO) nanocomposite was successfully used for mediatorless electrochemical sensing of methyl paraben…”
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Zinc(II) salphen complex-based fluorescence optical sensor for biogenic amine detection by Sahudin, Muhammad Ameerullah, Su’ait, Mohd Sukor, Tan, Ling Ling, Lee, Yook Heng, Abd Karim, Nurul Huda

“…Biogenic amines have attracted interest among researchers because of their importance as biomarkers in determining the quality of food freshness in the food…”
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An ultrasensitive hollow-silica-based biosensor for pathogenic Escherichia coli DNA detection by Ariffin, Eda Yuhana, Lee, Yook Heng, Futra, Dedi, Tan, Ling Ling, Karim, Nurul Huda Abd, Ibrahim, Nik Nuraznida Nik, Ahmad, Asmat

“…A novel electrochemical DNA biosensor for ultrasensitive and selective quantitation of Escherichia coli DNA based on aminated hollow silica spheres (HSiSs) has…”
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A New Laccase Based Biosensor for Tartrazine by Mazlan, Siti Zulaikha, Lee, Yook Heng, Hanifah, Sharina Abu

“…Laccase enzyme, a commonly used enzyme for the construction of biosensors for phenolic compounds was used for the first time to develop a new biosensor for the…”
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Hexaferrocenium tri[hexa(isothiocyanato)iron(III)] trihydroxonium complex as a new DNA intercalator for electrochemical DNA biosensor by Ariffin, Eda Yuhana, Zakariah, Emma Izzati, Ruslin, Farah, Kassim, Muhammad, Yamin, Bohari M., Heng, Lee Yook, Hasbullah, Siti Aishah

“…Ferrocene or ferrocenium has been widely studied in the field of organometallic complexes because of its stable thermodynamic, kinetic and redox properties…”
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Electrochemical Sunset Yellow Biosensor Based on Photocured Polyacrylamide Membrane for Food Dye Monitoring by Rozi, Normazida, Ahmad, Amalina, Yook Heng, Lee, Shyuan, Loh Kee, Hanifah, Sharina Abu

“…An enzyme-based electrochemical biosensor was investigated for the analysis of Sunset Yellow synthetic food dye. A glassy carbon electrode was coated with a…”
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Performance of a cyanobacteria whole cell-based fluorescence biosensor for heavy metal and pesticide detection by Shing, Wong Ling, Heng, Lee Yook, Surif, Salmijah

“…Whole cell biosensors always face the challenge of low stability of biological components and short storage life. This paper reports the effects of…”
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Electrochemical Biosensor for Nitrite Based on Polyacrylic-Graphene Composite Film with Covalently Immobilized Hemoglobin by Raja Jamaluddin, Raja Zaidatul Akhmar, Yook Heng, Lee, Tan, Ling Ling, Chong, Kwok Feng

“…A new biosensor for the analysis of nitrite in food was developed based on hemoglobin (Hb) covalently immobilized on the succinimide functionalized…”
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Optical DNA Biosensor Based on Square-Planar Ethyl Piperidine Substituted Nickel(II) Salphen Complex for Dengue Virus Detection by Ariffin, Eda Yuhana, Tan, Ling Ling, Abd Karim, Nurul Huda, Yook Heng, Lee

“…A sensitive and selective optical DNA biosensor was developed for dengue virus detection based on novel square-planar piperidine side chain-functionalized ,…”
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Comparison of sPLA2IIA performance with high-sensitive CRP neutrophil percentage PCT and lactate to identify bacterial infection by Tan, Toh Leong, Kang, Christabel Wan-li, Ooi, Kai Shen, Tan, Swee Thian, Ahmad, Nurul Saadah, Nasuruddin, Dian Nasriana, Ithnin, Azlin, Tajul Arifin, Khaizurin, Heng, Lee Yook, Hassan, Nurul Izzaty, Gan, Kok Beng, Neoh, Hui-min

“…Early bacterial infection (BI) identification in resource-limiting Emergency Departments (ED) is challenging, especially in low- and middle-income counties…”
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Preparation and Characterization of a Pectin Membrane-Based Optical pH Sensor for Fish Freshness Monitoring by Hasanah, Uswatun, Setyowati, Mita, Efendi, Rustam, Muslem, Muslem, Md Sani, Nor Diyana, Safitri, Eka, Yook Heng, Lee, Idroes, Rinaldi

“…In a simple and instant procedure for detecting fish freshness, a hydrogel and hydrophilic pectin matrix membrane was used successfully as an optical pH sensor…”
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Study of Histamine Detection using Liquid Chromatography and Gas Chromatography by Muhammad Abdurrahman Munir, Muhammad Mukram Mohamed Mackeen, Lee Yook Heng, Khairiah Haji Badri

“…Histamine is a heterocyclic amine shaped by decarboxylation of the histidine. It is a compound that lack chromophore and involatile. However, the detection of…”
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Highly Sensitive Aluminium(III) Ion Sensor Based on a Self-assembled Monolayer on a Gold Nanoparticles Modified Screen-printed Carbon Electrode by SEE, Wong Pooi, HENG, Lee Yook, NATHAN, Sheila

“…A new approach for the development of a highly sensitive aluminium(III) ion sensor via the preconcentration of aluminium(III) ion with a self-assembled…”
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Mediatorless Impedance Studies with Titanium Dioxide Conjugated Gold Nanoparticles for Hydrogen Peroxide Detection by Abdul Halim, Nur Hamidah, Lee, Yook Heng, Marugan, Radha Swathe Priya Malon, Hashim, Uda

“…An impedimetric-based biosensor constructed using gold nanoparticles (AuNP) entrapped within titanium dioxide (TiO₂) particles for hydrogen peroxide (H₂O₂)…”
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Amperometric capsaicin biosensor based on covalent immobilization of horseradish peroxidase (HRP) on acrylic microspheres for chilli hotness determination by Mohammad, Rosmawani, Ahmad, Musa, Heng, Lee Yook

“…•The use of modified acrylic microspheres for matrix immobilization of HRP enzyme and vinyl ferrocene as a mediator had been successfully developed.•This study…”
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Recent developments in microfluidic paper-, cloth-, and thread-based electrochemical devices for analytical chemistry by Malon Radha S.P., Heng Lee Yook, Córcoles Emma P.

“…The attractive structural and mechanical properties of cellulose substrates (paper, cloth, and thread), including passive fluid transport, biocompatibility,…”
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Effects of Gold Nanoparticles on the Response of Phenol Biosensor Containing Photocurable Membrane with Tyrosinase by Sharina, Abu Hanifah, Lee, Yook Heng, Musa, Ahmad

“…The role of incorporation of gold nanoparticles (50-130 nm in diameter) into a series of photocurable methacrylic-acrylic based biosensor membranes containing…”
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The Role of 8-Amidoquinoline Derivatives as Fluorescent Probes for Zinc Ion Determination by Mohamad, Nur Syamimi, Zakaria, Nur Hanis, Daud, Nurulhaidah, Tan, Ling Ling, Ta, Goh Choo, Heng, Lee Yook, Hassan, Nurul Izzaty

“…Mass-spectrometry-based and X-ray fluorescence-based techniques have allowed the study of the distribution of Zn ions at extracellular and intracellular levels…”
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