Thiaminase and Frozen Fish

[mtolypetsupply]

In Melissa Kaplan's Herp Care Collection, the Garter Snake Care Sheet states that freezing fish causes the development of Thiaminase. I believe this is the first time that I have read this.

Thoughts????

[Stefan-A]

To my knowledge it doesn't cause thiaminase to spontaneously generate, but freezing will not prevent the thiaminase that is already present from continuing to break down the B1 in the fish.

[infernalis]

Never heard of such a thing till now.

I cannot imagine that freezing will produce an enzyme that is absent before freezing.

However, I have been wrong about many things before.

[drache]

another disappeared post . . .
from what I understand, the freezing does not form thiaminase, but simply destroys the B1, which is something that can be remedied with supplementation, whereas ongoing ingestion of thiaminase cannot be compensated for
freezing also destroys vitamin E which can lead to steatitis

[Stefan-A]

freezing also destroys vitamin E which can lead to steatitis

If I've understood it correctly, freezing over long periods of time can destroy vitamin E.

[infernalis]

another disappeared post . . .

Once I used to think human intervention was the sole cause of this...

If you post during the daily database backup, it is possible that the post gets lost by the backup process.

[Snaky]

To my knowledge it doesn't cause thiaminase to spontaneously generate, but freezing will not prevent the thiaminase that is already present from continuing to break down the B1 in the fish.

That is exactly what I've always heard and read.

[GGarter]

Hello to you all. You are right about the thiaminase activity vs simple destruction of thiamine. The scientific argument is this:
Freezing will cause the death of cells, and no enzymes is produced. So you are right, thiamine is destroyed due to changes in conditions in the cells and not degredation by thiaminase, that causes the reduction of vitamin B1 when freezing feeders.