What are the properties og gel, Biology

What are the properties og Gels?

Polysaccharides, proteins or colloidal complex particles, such as caseinate micelles  form gels at levels of 10% or less. Gums, pectin and gelatin form gels at levels of 1% or less. Salts and pH influence gel formation adversely or favourably depending upon the  concentration. By the reduction in the number of charged particles, by the adjustment of pH or addition of salt, a sol can be transformed into a gel.  Addition of sugar which competes with water in the continuous phase helps gel formation when used in the proper portion.  Change in temperature has an effect on gel formation; low temperatures reduce the mobility of the colloidal molecules in the sol and increase the viscosity.  This condition facilitates gel formation.  

The rigidity of gel changes with time leading to  syneresis, which involves release of water and contraction of gel volume.  The amount of liquid released varies with the type of gel and the conditions under which it is prepared.

 

Posted Date: 7/8/2013 12:39:54 AM | Location : United States







Related Discussions:- What are the properties og gel, Assignment Help, Ask Question on What are the properties og gel, Get Answer, Expert's Help, What are the properties og gel Discussions

Write discussion on What are the properties og gel
Your posts are moderated
Related Questions
What are the processes that autotrophic beings use to produce organic material from inorganic substances? Autotrophic beings make organic material by photosynthesis or by chemo

Explain Associated Mitral Regurgitation and their role in miscellaneous conditions? Normal 0 false false false EN-IN X-NONE X-NONE

Search the web (mainly IEEE and ACM) publication databases to find a recent article on a biomedical application using a microcontroller. Clearly cite your reference(s). In your

Q. Bird identity card. How are birds characterized according to examples of representing beings, basic morphology, respiration, skin, nitrogen waste, circulation,thermal control an

What is the difference between macro and micronutrients? The categorization criterion of nutrients into macro and micronutrients has no relation to the size of the molecule. M

What are chylomicrons? Yes, so you now know that chylomicrons are basically lipoprotein molecules which are water miscible. They are poured into lymphatic vessels through lacte

What is the primary energy source for life on earth? The primary energy resource for life on earth is the sun. The sun plays the vital role of keeping the planet warmed and it

Morphological changes Regressive changes -These changes include the gradual reduction and ultimate disappearance of all those larval structures or organs that become redundan

Explain the True indications of Endodontic Surgery 1. Failure of non-surgical endo. Re-treatment "persistent lesion" 2. Failure of initial and retreatment will not achieve b

how does these phylem parasites????