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All Journal Sainstek : Jurnal Sains dan Teknologi Jurnal Sains Indonesia
Lee Yook Heng, Lee Yook
School of Chemical Sciences & Food Technology, Faculty of Science & Technology, 43600 UKM, Bangi Selangor, Malaysia
Computer Science & IT Energy Mathematics Social Sciences Other

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THE EFFECTS OF CHANGING MEMBRANE COMPOSITIONS AND INTERNAL ELECTROLYTES ON THE RESPON OF POTASSIUM ION SENSOR Ulianas, Alizar; Heng, Lee Yook
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.892 KB) | DOI: 10.31958/js.v7i1.119

Abstract

A study on the changing of membrane compositions and internal solution towards the response potassium ion sensor was carried out. Potassium ion sensor based on photocured cross linking poly(n-butyl acrylate) membranes with varying composition of valinomycin (val), sodium tetrakis [3.5-bis(trifluoro-methyl) phenyl] borat (NaTFPB), types ion of internal solution were investigated. Effects of varying composition of val, NaTFPB, types and concentration of internal solution were observed on potassium ion sensor. The effect of higher val composition was lower LOD, wider linear range, lower sensitivity but increase selectivity. Higher NaTFPB compositions lead to lower LOD, higher sensitivity and selectivity. The effect of changing internal electrolyte lead to lower LOD, wider linear response range and higher selectivity according to internal electrolyte consisting Na+, Ca2+ and K+, and sensitivity increase following internal electrolyte with Ca2+, K+ and Na+.Key words: ion sensor, ion selective membrane, ionofor, lipofilik salt
Review: A Modest Approach of Electrochemical Sensor to Determine Biogenic Amines in Food and Beverages Muhammad Abdurrahman Munir; Badri, Khairiah Haji; Heng, Lee Yook; Inayatullah, Ahlam; Badrul, Hamid Alkhair
Jurnal Sains Indonesia Vol 1 No 3 (2020): Volume 1, Nomor 3, 2020 (November)
Publisher : PUSAT SAINS INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59897/jsi.v1i3.25

Abstract

Biogenic amines are chemical compounds that can be found in protein food. The analysis of biogenic amines in food samples is very important because the toxicity released by them is very adverse if consumed by human. Several methods have been applied and developed in order to detect biogenic amines such as liquid chromatography (LC) and gas chromatography (GC). Nevertheless, both of them are time consuming and using many chemical compounds. Thus, electrochemical sensors become the best solution in order to solve the issues from chromatography methods. Electrochemical sensors are very simple, easy to use and cheap. This paper reviews about various techniques of electrochemical sensor such as chemical sensors, biosensors and optical sensors that have been used for biogenic amines detection.
Co-Authors Badri, Khairiah Haji Badrul, Hamid Alkhair Inayatullah, Ahlam Muhammad Abdurrahman Munir Ulianas, Alizar