Web resource for polysaccharides/hydrocolloids.

Prof. Martin Chaplin of the London South Bank Univ. has a very good web resource for polysaccharides/hydrocolloids.

It can be found here…


Did you know ?…

Gums that are used in food applications can be used to temporarily bind and stabilize soil ?
Guar, pre-gelatinized starch, and psyllium [mainly arabinoxlyan and better known as Metamucil] are recommended, with application rates codified such places as in the The California Stormwater Best Management Practice Handbooks

I tried it with partial success recently.
The shiny stripe along the top of the cut is where the gums have hydrated and penetrated the soil cracks. This has been partially successful and (fingers crossed) the section past the step in the wall is still OK. The closer section caved in well behind where the stabilizers were placed – taking the whole lot with them.

POLYMER – DSC – DMA – GLASSY resources

The Polymer Science learning Center at the Dept of Polymer Science at Southern Miss.


The “Macrogalleria” where the rubber (pardon the pun) hits the road.


http://pslc.ws/mactest/tg.htm for the glass transition

and this for a demo of…


http://pslc.ws/mactest/dsc.htm for Differential scanning calorimetry

http://pslc.ws/mactest/crystal.htm for polymer crystallinity

This is mostly about synthetic polymers but translates closely to food polymers


Mechanical analyses

What is Dynamic Mechanical Analysis, DMA? http://www.triton-technology.co.uk/pdf/TTInf_DMA.pdf

for DMA application notes

Honey crystallization

I guess honey gives you energy; therefore why it’s a topic for the DOE.

From a more conventional sources – the N a t i o n a l H o n e y B o a r d F o o d T e c h n o l o g y / Pr o d u c t R e s e a r ch Program

Scienceline The NYU Science, Health and Environmental Reporting Program.

Some food rheology primers and resources

OTHER FOOD RHEOLOGY PRIMERS: it might help look with these different perspectives

-From Pawan Takhar, Ph.D.Assistant Professor – Food Engineering at Texas Tech U.

If the link does not work try typing “rheology ptakhar” into gOOgle; it should be the first hit.

-From Dr Mukund V Karwe (http://foodsci.rutgers.edu/karwe/) from Rutgers Food Science

Why food rheology
Why might a school – not us – have an entire department devoted to food rheology ?

There are entire symposiums devoted to food rheology – for example –The International Symposium on Food Rheology and Structure – ISFRS 2009


Proceeding from the last 3 symposia can be found here

And food rheology hits the big time in 2005…

This abstract from NATURE http://www.nature.com/nmat/journal/v4/n10/abs/nmat1496.html could be a interesting read too. You should be able to access the full text PDF from a OSU based computer. Raffaele Mezzenga is an Assoc. Prof. at the Polymer Physics Group of Université de Fribourg Universität Freiburg in Switzerland.

If anyone develops a deep interest in this aspect of food science – this free pdf book by Prof. James F Steffe of Michigan State U. is a good resource…

Kelly Ross and Martin Scanlon. A fracture mechanics analysis of the texture of fried potato crust. Journal of Food Engineering 62 (2004) 417–423.

Well according to the authors, and I quote, “In spite of their [potatoes] economic importance, the potato processing industry has had difficulty in evaluating and controlling one of the french fry’s most important quality attributes––fry texture“.

The aim was then…
an investigation of the fracture properties of the crust of fried potato. As stated by Lima and Singh (2001a), there is a paucity of information on the mechanical properties of this component of a very popular processed food. Well defined measurements of mechanical properties are especially important for engineering modelling of the effect of given unit operations on the texture of individual regions of the fry“.

An answer looking for a problem ? Maybe.