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Pregled bibliografske jedinice broj: 439448

Časopis

Autori: Ljubić Herceg, Ivana; Režek Jambrak, Anet; Šubarić, Drago; Brnčić, Mladen; Rimac Brnčić, Suzana; Badanjak, Marija; Tripalo, Branko; Ježek, Damir; Novotni, Dubravka; Herceg, Zoran
Naslov: Texture and pasting properties of ultrasonically treated corn starch
Izvornik: Czech journal of food sciences (1212-1800) 28 (2010), 2; 83-93
Vrsta rada: članak
Ključne riječi: corn starch; ultrasound; texture; solubility; pasting
Sažetak:
The aim of this research was to examine the effect of high power ultrasound of 24 kHz and ultrasound bath of 24 kHz frequency on textural properties and pasting properties of corn starch suspensions. Suspensions were treated, using ultrasound probe set and bath with different intensities and treatment times (15 and 30 min). The treatments with high power ultrasound probes caused significant lowering of the beginning gelatinization temperatures of corn starch. Ultrasound treatment caused disrupting of starch granules by cavitational forces and made the granule more permeable to water. Highest viscosity has been observed for treatment with 300 W probe. Also, statistically significant increase in solubility in water (20 °C) was observed, that is caused by disruption of starch granules and molecule by ultrasound treatment. When applying more powerful ultrasound, starch granules specifically in amorphous region are being much more mechanically damaged. The texture profile analyses of the starch gel prepared with suspension that were treated with ultrasound probe, presented higher hardness and higher values of adhesiveness and cohesiveness when compared with untreated or treated suspensions with ultrasound bath. Micrography showed obvious impact of ultrasound on structure of starch granules. Ultrasound treatment is rupturing and mechanically damages the starch granules by collapse of cavitation bubbles that induces high pressure gradients and high local velocities of liquid layers in their vicinity.
Projekt / tema: 113-1130473-0571, 058-0580696-2533
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Prehrambena tehnologija
URL cjelovitog teksta:
Google Scholar: Texture and pasting properties of ultrasonically treated corn starch
Upisao u CROSBI: arezek@pbf.hr (arezek@pbf.hr), 8. Sij. 2010. u 09:14 sati



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