2016
DOI: 10.2331/suisan.16-00009
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Nondestructive determination of fat content in yellowtail and horse mackerel by impedance analysis

Abstract: We aimed to develop equipment to estimate the fat content of raw yellowtail and horse mackerel by nondestructive measurement using impedance (electrical resistance). The frequencies used were 5, 20, 50, and 100 kHz.Impedance varied with storage time after killing of theˆsh sample in all measurements using any of these four frequencies, but the impedance measured at 100 kHz showed a higher correlation with the fat content. Impedance varied with the change inˆsh body temperature. The accuracy of estimating fat c… Show more

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Cited by 6 publications
(2 citation statements)
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“…The accuracy of the non-destructive lipid measurements employing different principles (near infrared spectroscopy and electrical and electromagnetic measurements) is reduced by the state of the skin (thickness and degree of wetness), as reported by Kent (1990), Shimamoto et al (2003), Nielsen et al (2005), and Kubo et al (2016). The near-and far-side sample arrangements ( Figure 2) were employed to examine the effects of the presence of skin on the NMR accuracy.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The accuracy of the non-destructive lipid measurements employing different principles (near infrared spectroscopy and electrical and electromagnetic measurements) is reduced by the state of the skin (thickness and degree of wetness), as reported by Kent (1990), Shimamoto et al (2003), Nielsen et al (2005), and Kubo et al (2016). The near-and far-side sample arrangements ( Figure 2) were employed to examine the effects of the presence of skin on the NMR accuracy.…”
Section: Discussionmentioning
confidence: 99%
“…This is because the presence or state of the fish skin is critical to the accuracy of other techniques (e.g. measurements of near infrared spectra, microwave attenuation, and electrical impedance; Kent, 1990;Kubo et al, 2016;Nielsen et al, 2005;Shimamoto et al, 2003;Tao and Ngadi, 2018). Among the 31 almost cubical samples, 18 and 13 samples were prepared with and without skin, respectively.…”
Section: Sample Descriptionmentioning
confidence: 99%