Aroma and optical absorption spectroscopy for quality assessment of vegetable cooking oils

Rashid, Farzana; Maamor, H. N.; Yusuf, N.; Zakaria, N. Z. I.; Ismail, S. W. M.; Khashman, Adnan; Zakaria, A.; Kamarudin, Kamarulzaman; Shakaff, Ali Yeon Md

doi:10.1109/iced.2014.7015826

Cited by 3 publications

(2 citation statements)

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“…Energy is required in promoting the electron in molecules. The relationship between frequency of light absorbed and energy is E =hv (1) where E= energy of light (J), h= plank's constant (6.62607004 × 10 -34 m 2 kg / s) and v = frequency of light (Hz). On the other hand, the relationship between wavelength and frequency is…”

Section: Fig 1 Uv-vis Spectrophotometermentioning

confidence: 99%

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A Quality Discriminaton within Ultra Violet Spectrum using Optical Sensor for Selected Commercial Oils

Ismail

Razak

2018

MATEC Web Conf.

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Nowadays ultra violet-visible (UV-Vis) spectrophotometers are widely used and is one of an important analytical instrument in modern day research. This work is conducted to determine oil quality discrimination of different selected oils using optical sensor, where the oil samples are analyzed within ultra violet (UV) spectrum, which ranges from 200nm to 400nm wavelengths. The oils extracted from five plants are analyzed based on the light absorption rate at different wavelengths. Different energy value is required for electron transition from lower level to the higher, due to different molecular structure of the main compound in the oil. The highest absorption rate at wavelength 393 nm is achieved from lemongrass oil, whereas the lowest absorption peak at 368 nm is observed from ginger oil.

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Section: Fig 1 Uv-vis Spectrophotometermentioning

confidence: 99%

“…There are a lot of methods to analyze oil quality based on the compound content of the oil such as high-performance liquid chromatography (HPLC) [1], nuclear magnetic resonance (NMR) [2] and other chemometric and conventional methods [3]. Over a certain range of wavelength, every chemical compound absorbs, transmits or reflects [4].…”

Section: Introductionmentioning

confidence: 99%