期刊
FOOD CHEMISTRY
卷 157, 期 -, 页码 186-192出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.01.072
关键词
High-intensity ultrasound; Conventional heating treatment; Maillard reaction; Glycoconjugates; Furosine; Lactose isomerisation; Lactulose
资金
- Ministerio de Ciencia e Innovacion [AGL2011-27884, CSD2007-00063]
- Junta de Comunidades de Castilla-La Mancha [POII10-0178-4685]
- European Regional Development Fund [ERDF]
The impact of high-intensity ultrasound (US) on the formation of lactulose during lactose isomerization and on the obtention of lysine-glucose glycoconjugates during Maillard reaction (MR) has been studied, respectively, in basic and neutral media. As compared to equivalent conventional heat treatments, a higher formation of furosine, as indicator of initial steps of MR, was observed together with more advance of the reaction in US treated samples, this effect being more pronounced with the increase of US amplitude (50-70%) and temperature (25-40 degrees C). Regarding the influence of US on lactulose formation, in general, in a buffered system (pH 10.0), US at 70% of amplitude and 60 degrees C increased the rate of lactose isomerization, higher values of lactulose, epilactose and galactose being observed in comparison to conventional heating. The results of this work showed an acceleration of both reactions by US, indicating its usefulness to promote the formation of functional ingredients. (C) 2014 Elsevier Ltd. All rights reserved.
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