The shear forces induced by acoustic cavitation have proved highly effective in reducing theviscosity of a range of food products (Karaman et al. 2012). This viscosity reduction can occureither through the disruption of aggregates, through the disruption of hydrophobic interactions,or by a reduction in polymer chain length (Szent-Gyorgyi 1933). For example, ultrasound has ¨been effectively used to reduce the polymer chain length of polysaccharides (Iida et al. 2008) suchas dextran (Lorimer et al. 1995) and pectin (Seshadri et al. 2003). Ultrasound can also facilitatethe dissolution of starch granules, which in turn can improve the gelatinization process (Zuo et al.2009, Jambrak et al. 2010).
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