Naslov
Impact of ultrasound-enhanced homogenization on physical properties of soybean milk

Autori
Bosiljkov, Tomislav ; Brnčić, Mladen ; Tripalo, Branko ; Karlović, Sven ; Ukrainczyk, Marko ; Ježek, Damir ; Rimac-Brnčić, Suzana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Chemical Engineering Transactions – volume 17, Proceedings of the 9th International Conference on Chemical and Process Engineering / Sauro Pierucci - Rim : Italian Association of Chemical Engineering (AIDIC), 2009, 1029-1034

ISBN
978-88-95608-01-3

Skup
9th International Conference on Chemical and Process Engineering

Mjesto i datum
Rim, Italija, 10.05.2009. - 13.05.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ultrasound; homogenization; soybean milk; physical properties

Sažetak
In this study, research was based on influence of high intensity ultrasound treatment on degree of homogenization of soybean milk. Inhomogeneous milk was treated using ultrasonic equipment (maximal nominal power - 100 W) with the constant frequency of 24 kHz, set to different nominal power (P = 20, 60, 100W), with the time of treatment ( t = 2, 6, 10 and 15 minutes). Changes on size of fat globules were monitored with the optical microscopy (1000 × magnification). All samples were captured with high resolution digital camera, and images were analyzed in “ Image J” software. Obtained data were statistically analyzed in “ Statistica 6” software, and dimensions of fat globules were represented with “ Log – Normal distribution” graph. Physical properties of ultrasonically treated homogenized milk, which include measuring of density, viscosity, and pH – value before and after treatment were also conducted. Influence of process parameters (nominal power and time) on physical properties and degree of homogenization (variance) were represented with “ Pareto chart of standardized effects” Increase of the power (nominal power up to 100 W) leads to increase of degree of homogenization, and decrease in size of fat globules in samples. Maximum nominal power (100 W) used during maximum times (10, 15 minutes), shows highest degree of homogenization, while size of fat globules rapidly drops with the increase of amplitude and time. Longer time of treatment with ultrasound showed significant changes on all physical properties.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA