Detection of Sludge Contamination in Crude Palm Oil Using Dielectric Spectroscopy Hamdan, Khairunnisa Abd Aziz, Samsuzana Steward, Brian Yahya, Azmi Rokhani, Fakhrul Steward, Brian
dc.contributor.department Agricultural and Biosystems Engineering 2018-02-16T05:28:56.000 2020-06-29T22:41:31Z 2020-06-29T22:41:31Z Thu Jan 01 00:00:00 UTC 2015 2015-01-01
dc.description.abstract <p>Degradation and deterioration of crude palm oil (CPO) is a major concern in the palm oil industry because it could affect the quality of palm oil products. The development of rapid and non-destructive measuring techniques is needed to enhance the efficiency of palm oil quality monitoring. This study used dielectric spectroscopy to detect possible sludge contamination in CPO. Dielectric properties of CPO were measured at different temperatures and sludge contamination levels using a liquid dielectric test fixture that was connected to an impedance analyzer with frequencies ranging from 3 to 30 MHz. The variations in dielectric properties were analyzed using ANOVA and Duncan’s multiple range test. Principal component regression (PCR) and partial least squares (PLS) analysis were used for model development to predict sludge contamination. The results showed that there was a significant difference in dielectric constant as the temperature increased from 28°C to 55°C (p < 0.0001). The dielectric constant also increased from 3.01 to 63.53 with increasing contamination levels. Generally, there were significant differences between the dielectric constants of pure and contaminated CPO (p < 0.0001). The PCR and PLS calibration models showed good prediction ability of sludge contamination at different temperature levels. The classification of sludge contamination yielded very strong correlation, with r<sup>2</sup> values ranging from 0.91 to 0.98. The best result was obtained at 28°C with the lowest value of standard error cross-validation (SECV) of 1.04%. The results showed that dielectric spectroscopy has strong potential for CPO quality monitoring.</p>
dc.description.comments <p>This article is from <em>Transactions of the ASABE</em> 58 (2015): 227–232, doi:<a href="" target="_blank">10.13031/trans.58.10656</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1925
dc.identifier.contextkey 7000576
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/642
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 01:22:28 UTC 2022
dc.source.uri 10.13031/trans.58.10656
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Crude palm oil
dc.subject.keywords Dielectric spectroscopy
dc.subject.keywords Quality monitoring
dc.subject.keywords Sludge contamination
dc.title Detection of Sludge Contamination in Crude Palm Oil Using Dielectric Spectroscopy
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication ef71fa01-eb3e-4e29-ade7-bcb38f2968b0
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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