Because of spam, I personally moderate all comments left on my blog. However, because of health issues, I will not be able to do so in the future.

If you have a personal question about LI or any related topic you can send me an email at I will try to respond.

Otherwise, this blog is now a legacy site, meaning that I am not updating it any longer. The basic information about LI is still sound. However, product information and weblinks may be out of date.

In addition, my old website, Planet Lactose, has been taken down because of the age of the information. Unfortunately, that means links to the site on this blog will no longer work.

For quick offline reference, you can purchase Planet Lactose: The Best of the Blog as an ebook on or Almost 100,000 words on LI, allergies, milk products, milk-free products, and the genetics of intolerance, along with large helpings of the weirdness that is the Net.

Tuesday, August 09, 2005

Teaching Lactose and Lactase

A wonderful site,, has a long list of simple teaching experiments that teachers can do to show how lactase digests lactose, among other nifty things.

  • Lactase
  • Lactase Inhibition
  • A New Pedagogy for the Lac-Operon
  • Control of Lactase Activity: Genetic and Enzymatic Levels of Control
  • Exploring the Realm of the Steady State in E. coli

    If you poke around on the site, there's probably lots more of interest. I'd love to see students come out of school already knowing how lactose digestion works.

    And I can't help mentioning an old favorite here, from San Francisco's marvelous Exploratorium. Milk Makes Me Sick: Exploration of the Basis of Lactose Intolerance.

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