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Bahan Sensor untuk Pengesanan Ph Menggunakan Ekstrak Rosel (Optical Sensing Material for pH Detection based on the Use of Roselle Extract)

Nurul Huda Abd. Karim, and Musa Ahmad, and Mohammad Osman, and Herman, and Ahmad Mahir Mokhtar , (2008) Bahan Sensor untuk Pengesanan Ph Menggunakan Ekstrak Rosel (Optical Sensing Material for pH Detection based on the Use of Roselle Extract). Sains Malaysiana , 37 (1). pp. 59-63. ISSN 01266039

Full text not available from this repository.

Official URL: http://pkukmweb.ukm.my/~jsm/pdf_files/SM-PDF-37(1)March2008/07.pdf

Affiliations

Universiti Kebangsaan Malaysia. Faculty of Science and Technology. Centre for Chemical Sciences and Food Technology
niversiti Kebangsaan Malaysia. Faculty of Science and Technology. Centre for Chemical Sciences and Food Technology
Universiti Kebangsaan Malaysia. Faculty of Science and Technology. Centre for Recycling Science
Universiti Kebangsaan Malaysia. Faculty of Science and Technology. Centre for Recycling Science
Universiti Sains Islam Malaysia. Faculty of Science and Technology

Abstract

This research assessed the potential of natural colour extract of Hibiscus Sabdariffa L. (roselle) as sensing material.The pH sensor was developed based on the use of natural reddish colour in roselle’s calyx, delphinidin-3-sambubioside immobilised in a glass fibre filter paper. In free solution, roselle extract was characterised by using UV-visible spectrophotometer to study the effect of pH, extract concentration, response time, repeatability and photostability. The study showed that natural colour extract can be used as sensing material for the development of an optical pH sensor.

(Kajian ini menilai potensi ekstrak pewarna kaliks Hibiscus Sabdariffa L. (rosel) sebagai bahan sensor. Dalam kajian ini, sensor pH dibangunkan menggunakan ekstrak warna kemerahan semulajadi dalam kelopak rosel, delfinidin-3-sambubiosida yang dipegunkan dalam kertas turas gentian kaca. Dalam larutan bebas, ekstrak rosel dicirikan menggunakan spektrofotometer UL-nampak untuk mengkaji kesan pH, kepekatan ekstrak, masa ransangan keadaan mantap, analisis kebolehulangan dan analisis kestabilan foto. Ekstrak rosel terpegun dicirikan dengan menggunakan spektrofotometer pantulan untuk mengkaji kesan pH, masa ransangan keadaan mantap, analisis kebolehulangan, analisis kestabilan foto dan kajian histerisis. Hasil kajian menunjukkan bahawa ekstrak bahan semulajadi boleh digunakan sebagai bahan sensor dalam pembinaan sensor optik pH).

Item Type:Journal
Keywords:pH sensor; roselle extract; delphinidin-3-sambubioside, hibiscus, colour extracts from flowers
Subjects:Q Science, Computer Science
ID Code:2803

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