# Dextrose calculations for salami fermentation

#### indaswamp

##### Smoking Guru
OTBS Member
I'm working on a formulation for a Salsiccia Napolitana salami. It has quite a bit of pepper powder in it so need to account for the dextrose in the powder as it will contribute to fermentation. Here's my math:

The information provided to me by chef jimmyj is:

119 grams fresh bell pepper contains 2.3 grams fructose 2.7 grams sucrose.
A fresh bell pepper is 92% water, so 8% solids.

Both sugars are fermentable, but only the fructose can be utilized by all bacteria. The sucrose can be utilized by some fermentation cultures. Fructose is a simple sugar like dextrose so can be interchangeable... SO,,,

2.3 grams fructose/ 9.52 grams pepper powder is...0.2416 grams fructose per gram pepper powder.

This is for bell peppers. This would be a baseline. Some peppers have more or less fructose. Cayenne peppers have higher levels of fermentable sugars....

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#### daveomak

##### SMF Hall of Fame Pitmaster
OTBS Member
SMF Premier Member
There is an in depth explanation of types of sugars in this video....

#### indaswamp

##### Smoking Guru
OTBS Member
Thanks for posting dave...I've watched it several times, but others may benefit from it.

#### indaswamp

##### Smoking Guru
OTBS Member
I had to edit the information I provided. I used 100g of bell pepper when it should have been 119g.

..that CRS cropping up on me Dave!! LOL!!

#### indaswamp

##### Smoking Guru
OTBS Member
Another useful calculation, though this one is not 100% precise; but it is in the ballpark and is used to determine the humidity level needed in your chamber.

After addition of 2.5~3% salt to the salami, the Aw (water activity) of the meat is around 0.96Aw.
Upon reaching 30% weight loss, the Aw is around 0.86Aw... so that is a move downward of 0.10 Aw.

So for every 3% loss of water weight, you decrease the Aw by 0.01%.

Since it is optimum to have the humidity track 5~10% below the Aw of the salamis, you can use this to adjust the humidity in your chamber for a more even drying of salamis.

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