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novel process forms cold whey protein gel emulsions
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a new method of emulsification, based on a pre-heat treatment of whey protein and microfluidization techniques, has produced a cold-set gelled emulsion for use in foods, say researchers. scientists from the south china university of technology report that the technique could extend the application of gels to allow for the incorporation of heat sensitive food ingredients. writing in the journal food chemistry, the authors said that until now, techniques have relied on heat-setting techniques to produce gelled emulsions, but noted that heat treatment of the emulsion limited the uses of the gels, due to the heat sensitivity of certain bioactive food ingredients. “protein-stabilized emulsions are systems of great importance to the food industry … this kind of novel gel-like emulsion might exhibit great potential and be applicable in food formulations …[as a] carrier for heat-labile and active ingredients,” said the authors, led by dr fu liu from the department of food science and technology at the south china university of technology. whey emulsions whey proteins are an important nutritional and functional food ingredient, and are extensively used in food applications, including sport beverages, meat replacement products, baked products, salad dressings, ice creams, artificial coffee creams, soups and dairy products. liu and colleagues said that compared with emulsions, emulsion gels have more potential when applied as the carriers for bioactive compounds in functional foods, due to their controlled release profiles and improved oxidative stability. they noted that whey protein-stabilized emulsions can be transformed into emulsion gels, through heat treatment, and acidification with glucono-delta-lactone (gdl) however dr liu and co workers noted that the heat setting process may not be suitable for many forms of bioactive compounds. “heat-set emulsion gels are clearly not suitable as the carrier for heat-labile bioactives … those obtained by cold-set techniques without heat treatment will be much more favourable,” they said. they added that a recently developed novel cold setting technique has been recently reported to produce gel-like emulsions from whey protein concentrate at ambient temperatures.(food hydrocolloids , doi: 10.1016/j.foodhyd.2009.02.011 ).
Source :foodnavigator.com
Date :
15
February
2011
Category :
Codiments,Desserts,food additi
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the world is changing - that much few now deny. while businesses of all sorts are striving to clean up their act, the food supply is one area where the impact of climate change could be felt most keenly. how climate change could affect global food supply no-one yet knows whether climate change will be reversible - or indeed what all its effects could be.
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wacky food products are nothing new - take heinz’ launch in 2000 of green tomato ketchup - but the recent development of flavour-changing chewing gum still leaves the question: which trends will stick? as part of our special series on food in the future foodnavigator.com asked david jago, director of trends and innovation at market research firm mintel, to help us separate out the latest mad launches from the potentially mainstream, and to predict possible trends.
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food formulators looking for novel gelling agents may soon be offered whey protein isolates and concentrates modified by supercritical carbon dioxide, suggests a new study. using supercritical carbon dioxide (scco2) processing, researchers from the university of tennessee report in the journal of dairy science that a range of novel whey protein ingredients with increased gel strength.
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whey protein is increasingly hitting the mainstream. this year saw numerous studies published exploring the potential of the ingredient to encapsulate value-added ingredients. here, foodnavigator reviews the progress from 2007. 3d hydrogels in august, sundaram gunasekaran and co-workers at the university of wisconsin-madison reported that whey proteins hydrogels have the potential to encapsulate sensitive ingredients, suggests a new study.
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PEPSI
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Mumika
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Chika
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