TY - JOUR
T1 - Ultrasonic determination of fish composition
AU - Ghaedian, Reza
AU - Coupland, John Neu
AU - Decker, Eric Andrew
AU - McClements, David Julian
N1 - Funding Information:
This paper was funded by a grant/cooperativea greementf rom the U.S. National Oceanic and Atmospheric Administration. The views expressedh erein are those of the authors and do not necessarilyr eflect the views of NOAA or any of its subagencies.
PY - 1998
Y1 - 1998
N2 - Our objective was to ascertain the relationship between the ultrasonic properties of fish and their composition. Fish analogs with varying protein (15-25 wt%), lipid (0-25 wt%) and moisture (55-80 wt%) contents were prepared by mixing dried cod powder, sunflower oil and distilled water. The temperature dependence of the ultrasonic velocity of fish analogs was measured from 5 to 35°C. The ultrasonic velocity increased with solids-non-fat at all temperatures, but had a more complex dependence on fat content. Around 15°C the ultrasonic velocity was independent of fat, at lower temperatures it increased with fat, and at higher temperatures it decreased. Empirical equations were developed to relate the ultrasonic velocity to composition. By measuring the ultrasonic properties of fatty tissue at at least two temperatures it should be possible to determine both the fat and solids-non-fat content. For non-fatty fish, the solids-non-fat content can be determined from a single measurement. Our results highlight the potential of ultrasonic velocity measurements to rapidly and nondestructively determine fish composition.
AB - Our objective was to ascertain the relationship between the ultrasonic properties of fish and their composition. Fish analogs with varying protein (15-25 wt%), lipid (0-25 wt%) and moisture (55-80 wt%) contents were prepared by mixing dried cod powder, sunflower oil and distilled water. The temperature dependence of the ultrasonic velocity of fish analogs was measured from 5 to 35°C. The ultrasonic velocity increased with solids-non-fat at all temperatures, but had a more complex dependence on fat content. Around 15°C the ultrasonic velocity was independent of fat, at lower temperatures it increased with fat, and at higher temperatures it decreased. Empirical equations were developed to relate the ultrasonic velocity to composition. By measuring the ultrasonic properties of fatty tissue at at least two temperatures it should be possible to determine both the fat and solids-non-fat content. For non-fatty fish, the solids-non-fat content can be determined from a single measurement. Our results highlight the potential of ultrasonic velocity measurements to rapidly and nondestructively determine fish composition.
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U2 - 10.1016/S0260-8774(98)00027-2
DO - 10.1016/S0260-8774(98)00027-2
M3 - Article
AN - SCOPUS:0031988723
SN - 0260-8774
VL - 35
SP - 323
EP - 337
JO - Journal of Food Engineering
JF - Journal of Food Engineering
IS - 3
ER -