Dairy Science and Food Technology Homepage
Home  Cheese starters Donate support Site  Probiotics Cheese yield  Cheese quality Cheese science  Italian cheese Anti-microbial  proteins  Phages Primary production  Ice cream Wine Calculators  Harvard referencing  Packaging  Jobs
Forum Home Forum Home > Food Science > Food Science
  New Posts New Posts RSS Feed - pH-T route and T-pH route of acid-induced gel
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


pH-T route and T-pH route of acid-induced gel

 Post Reply Post Reply
Author
Message Reverse Sort Order
childream View Drop Down
Guest Group
Guest Group
Post Options Post Options   Thanks (0) Thanks(0)   Quote childream Quote  Post ReplyReply Direct Link To This Post Topic: pH-T route and T-pH route of acid-induced gel
    Posted: 19 Mar 2010 at 8:06pm
I use kefir grains to make fermented milk.

before I know these two routes,I first warm the milk and start acidification,then I get a incompact gel which is easy to break.

then I change the process,first I ferment a part of milk to a low pH with kefir then I add 4C cold milk into fermented milk.stir and wait for some minutes ,then heat it until it gel. at last I get a stronger gel ,less whey is release,looks like a soft tofu!!!

Back to Top
Sponsored Links


Back to Top
childream View Drop Down
Guest Group
Guest Group
Post Options Post Options   Thanks (0) Thanks(0)   Quote childream Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2010 at 8:05pm
I have read a paper which is about the pH-T route and T-pH route of acid-induced milk gel.

pH-T route means that acidified at low temperature (GDL is uesd in that paper), then heat until gel is formed.

T-pH route means that heat to high temperature and then acidified with GDL until milk form gel.

the result is that pH-T gel is greatly stronger than T-pH gel.

the reason is that at low pH there is more serum casein, when heat serum casein become part of the protein network thus make the gel stronger (i.e. higher G')
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.