Optical sensing of tea aroma using n-tetraphenyl porphine manganesse (III) chloride thin films

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The aroma emerged from food sample gives a specific information on quality, freshness and flavors. This-paper reports the use of a porphyrin derivative, n-tetraphenyl porphine manganese (III) chloride, thin films for detection of tea aroma. The thin films were deposited on glass substrate by Langmuir-Blodgett technique. The experiment were performed using optical fiber reflectance with three different color LED's i.e. red (λ=650 nm), yellow (585 nm) and green (λ= 563 nm), as light sources. The sensing sensitivity was measured based on the change in the optical absorption spectra of the reflected lights from the film. The reflected lights from the thin films were found sensitive to tea aroma. The intensity of the reflected lights was decreased in the presence of aroma.

Original languageEnglish
Title of host publicationIEEE International Conference on Semiconductor Electronics, Proceedings, ICSE
Pages49-53
Number of pages5
Publication statusPublished - 2000
Event2000 4th IEEE International Conference on Semiconductor Electronics, ICSE 2000 - Port Dickson
Duration: 13 Nov 200015 Nov 2000

Other

Other2000 4th IEEE International Conference on Semiconductor Electronics, ICSE 2000
CityPort Dickson
Period13/11/0015/11/00

Fingerprint

Chlorides
Thin films
Flavors
Porphyrins
Manganese
Light absorption
Light emitting diodes
Light sources
Optical fibers
Absorption spectra
Color
Derivatives
Glass
Substrates
Tea
porphine
Experiments

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Akrajas, A. U., Mat Salleh, M., & Yahaya, M. (2000). Optical sensing of tea aroma using n-tetraphenyl porphine manganesse (III) chloride thin films. In IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE (pp. 49-53). [932306]

Optical sensing of tea aroma using n-tetraphenyl porphine manganesse (III) chloride thin films. / Akrajas, Ali Umar; Mat Salleh, Muhamad; Yahaya, Muhammad.

IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE. 2000. p. 49-53 932306.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Akrajas, AU, Mat Salleh, M & Yahaya, M 2000, Optical sensing of tea aroma using n-tetraphenyl porphine manganesse (III) chloride thin films. in IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE., 932306, pp. 49-53, 2000 4th IEEE International Conference on Semiconductor Electronics, ICSE 2000, Port Dickson, 13/11/00.
Akrajas AU, Mat Salleh M, Yahaya M. Optical sensing of tea aroma using n-tetraphenyl porphine manganesse (III) chloride thin films. In IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE. 2000. p. 49-53. 932306
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