Novel technique to detect rancidity of oils using microwave microstrip ring resonator

R. G. Sumesh Sofin, R. N. Karekar, R. C. Aiyer

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The present article presents a novel technique to study the rancidity of oils at microwave frequencies through measurements of microwave dielectric properties of liquids. CaCO3 (chalk) was used as a noninteracting medium (matrix) to hold the liquids within and is used to perturb the microwave microstrip ring resonator (MMRR). The rancidified oils exhibit high dielectric constants, giving higher changes in resonating frequencies. The method is found to be repeatable. Coconut oil (Cocos nucifera), sunflower oil (Helianthus annuus), rancidified coconut oil and rancidified sunflower oil were studied using this technique. The resonant frequency was measured using a scalar network analyzer (SNA, HP 8757C). The method shows noticeable differences in resonating frequency (few tens of MHz) between fresh oil and rancidified oil.

Original languageEnglish
Pages (from-to)377-379
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume33
Issue number5
DOIs
Publication statusPublished - Jun 5 2002

Fingerprint

Resonators
Oils
oils
resonators
Microwaves
microwaves
rings
Sunflower oil
Dielectric properties of liquids
sunflowers
Electric network analyzers
Calcium Carbonate
Microwave frequencies
Natural frequencies
Permittivity
chalk
frequency measurement
Liquids
liquids
microwave frequencies

Keywords

  • Microstrip ring resonator
  • Noninteractive matrix
  • Rancidity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Novel technique to detect rancidity of oils using microwave microstrip ring resonator. / Sumesh Sofin, R. G.; Karekar, R. N.; Aiyer, R. C.

In: Microwave and Optical Technology Letters, Vol. 33, No. 5, 05.06.2002, p. 377-379.

Research output: Contribution to journalArticle

@article{3921771907064e89a285a1945db65296,
title = "Novel technique to detect rancidity of oils using microwave microstrip ring resonator",
abstract = "The present article presents a novel technique to study the rancidity of oils at microwave frequencies through measurements of microwave dielectric properties of liquids. CaCO3 (chalk) was used as a noninteracting medium (matrix) to hold the liquids within and is used to perturb the microwave microstrip ring resonator (MMRR). The rancidified oils exhibit high dielectric constants, giving higher changes in resonating frequencies. The method is found to be repeatable. Coconut oil (Cocos nucifera), sunflower oil (Helianthus annuus), rancidified coconut oil and rancidified sunflower oil were studied using this technique. The resonant frequency was measured using a scalar network analyzer (SNA, HP 8757C). The method shows noticeable differences in resonating frequency (few tens of MHz) between fresh oil and rancidified oil.",
keywords = "Microstrip ring resonator, Noninteractive matrix, Rancidity",
author = "{Sumesh Sofin}, {R. G.} and Karekar, {R. N.} and Aiyer, {R. C.}",
year = "2002",
month = "6",
day = "5",
doi = "10.1002/mop.10327",
language = "English",
volume = "33",
pages = "377--379",
journal = "Microwave and Optical Technology Letters",
issn = "0895-2477",
publisher = "John Wiley and Sons Inc.",
number = "5",

}

TY - JOUR

T1 - Novel technique to detect rancidity of oils using microwave microstrip ring resonator

AU - Sumesh Sofin, R. G.

AU - Karekar, R. N.

AU - Aiyer, R. C.

PY - 2002/6/5

Y1 - 2002/6/5

N2 - The present article presents a novel technique to study the rancidity of oils at microwave frequencies through measurements of microwave dielectric properties of liquids. CaCO3 (chalk) was used as a noninteracting medium (matrix) to hold the liquids within and is used to perturb the microwave microstrip ring resonator (MMRR). The rancidified oils exhibit high dielectric constants, giving higher changes in resonating frequencies. The method is found to be repeatable. Coconut oil (Cocos nucifera), sunflower oil (Helianthus annuus), rancidified coconut oil and rancidified sunflower oil were studied using this technique. The resonant frequency was measured using a scalar network analyzer (SNA, HP 8757C). The method shows noticeable differences in resonating frequency (few tens of MHz) between fresh oil and rancidified oil.

AB - The present article presents a novel technique to study the rancidity of oils at microwave frequencies through measurements of microwave dielectric properties of liquids. CaCO3 (chalk) was used as a noninteracting medium (matrix) to hold the liquids within and is used to perturb the microwave microstrip ring resonator (MMRR). The rancidified oils exhibit high dielectric constants, giving higher changes in resonating frequencies. The method is found to be repeatable. Coconut oil (Cocos nucifera), sunflower oil (Helianthus annuus), rancidified coconut oil and rancidified sunflower oil were studied using this technique. The resonant frequency was measured using a scalar network analyzer (SNA, HP 8757C). The method shows noticeable differences in resonating frequency (few tens of MHz) between fresh oil and rancidified oil.

KW - Microstrip ring resonator

KW - Noninteractive matrix

KW - Rancidity

UR - http://www.scopus.com/inward/record.url?scp=0037024071&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037024071&partnerID=8YFLogxK

U2 - 10.1002/mop.10327

DO - 10.1002/mop.10327

M3 - Article

VL - 33

SP - 377

EP - 379

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

SN - 0895-2477

IS - 5

ER -