What are the properties og gel, Biology

Assignment Help:

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.

 


Related Discussions:- What are the properties og gel

Measure to be taken in the event of tsunami, ·          If we are in danger...

·          If we are in dangerous areas, water, gas and electricity should be turned off quickly and we should move to a higher level of ground.                  ·          It s

Determine the floor of nose and nasal spine, Floor of nose and Nasal spine ...

Floor of nose and Nasal spine Although variable, the nasal floor is typically situated 5-9mm below the level of inferior turbinates. The inferior piriform rim is used as a guid

Define fraction in which calcium in plasma is present, Define Fraction in w...

Define Fraction in which Calcium in plasma is Present? Calcium in plasma is present in three major fractions: Ionized calcium Protein bound calcium Complexed c

Define effect of deficiency of chromiumin humans, Define Effect of Deficien...

Define Effect of Deficiency of chromiumin humans? Hallmark of marginal chromium deficiency is impaired glucose tolerance. Individuals receiving TPN without chromium have been s

Species diversity - synthetic characters, Species Diversity - Synthetic Cha...

Species Diversity - Synthetic Characters It is one of the most important and basic characteristics of a community. There are various ways of measuring species diversity the si

What is the cell theory, Q. What is the cell theory? Cell theory assert...

Q. What is the cell theory? Cell theory asserts that the cell is the element unit of living beings. Before the discovery of the cell, it was not acknowledged that living bei

Process of evolutionary change, In that Unit you also learnt about Darwin, ...

In that Unit you also learnt about Darwin, who based on his extensive observations and interpretations showed that evolution is a simple fact of nature. It was Theodosius Dobzhansk

What is the salivary digestive enzyme, What is the salivary digestive enzym...

What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food? The salivary hydrolase is called as saliva

Explain about the protein isolates, Explain about the Protein Isolates? ...

Explain about the Protein Isolates? Before we begin our discussion on protein isolates, let us first get to know how protein concentrates differ from isolates. Basically, the t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd