February 16, 2010

Protein as Emulsifying agent and Foaming agent

Protein as Emulsifying agent and Foaming agent
Emulsifying agent
Emulsion is dispersion of one liquid in another liquid. An emulsion is a heterogenous system made up of two phases.

A substance which stabilizes an emulsion, is known as an emulsifying agent.

If oil an water are shaken vigorously, the two liquids are dispersed to form an emulsion. Such an emulsion is unstable, and in order to stabilize it, a third substance called an emulsifying agent or emulsifier, must be added.

Emulsifying agents are substance whose molecular contain both hydrophilic (water loving) and hydrophobic (water hating) groups.

Proteins act as emulsifying agents, because of their amphoteric nature. For example, in preparation of mayonnaise, eggs act as emulsifying agent.

Foaming agent
Formation of foam is necessary in some food preparation. Proteins when beaten are able to hold in the air, and thus improve the texture and feel of the food. Ice cream and lemon meringue are excellent of this property.
Protein as Emulsifying agent and Foaming agent
at 8:04 PM
Labels: ,

The Most Popular Posts

  • Objective evaluation of food
    Objective evaluation of food Objective evaluation of foods involves instrumentation, and use of physical and chemical techniques to evaluate...
  • Free and Bound Water
    Free and Bound Water Water is abundant in all living things and consequently, in almost all foods, unless steps have been take to remove it....
  • Crude Fiber
    Crude fiber is a measure of the quantity of indigestible cellulose, pentosans, lignin, and other components of this type in present foods. ...
  • Crude Fat
    Crude fat is the term used to refer to the crude mixture of fat-soluble material present in a sample. Crude fat also known as the ether ext...
  • What is retrogradation?
    Retrogradation is another important property of starch. Retrogradation refers to the occurrence where starch reverts or retrogrades to a mor...
  • Soft drinks
    Typical carbonated soft drink cans are made of two pieces, one making up the sides and bottom, and the lid on top. Lids are commonly made of a different al...
  • Instant Noodles
    The de facto Mecca of pulled noodles is Lanzhou, the capital city of China’s Gansu Province. Pulling noodles from dough by hand was the ancient way before ...
  • Healthy Diet
    Most American today are overfed yet undernourished, which eventually leads to obesity and poor health. The answer to those pervasive problem is simply to ...