Fuet d'Olot extra

Dextrins are a group of low-molecular-weight carbohydrates produced by the hydrolysis of starch or glycogen. Dextrins are mixtures of polymers of D-glucose units linked by α-(1→4) or α-(1→6) glycosidic bonds. Dextrins can be produced from starch using enzymes like amylases, as during digestion in the human body and during malting and mashing, or by applying dry heat under acidic conditions (pyrolysis or roasting). The latter process is used industrially, and also occurs on the surface of bread during the baking process, contributing to flavor, color and crispness. Dextrins produced by heat are also known as pyrodextrins. The starch hydrolyses during roasting under acidic conditions, and short-chained starch parts partially rebranch with α-(1,6) bonds to the degraded starch molecule. See also Maillard Reaction. Dextrins are white, yellow, or brown powders that are partially or fully water-soluble, yielding optically active solutions of low viscosity. Most of them can be detected with iodine solution, giving a red coloration; one distinguishes erythrodextrin (dextrin that colours red) and achrodextrin (giving no colour). White and yellow dextrins from starch roasted with little or no acid are called British gum.

Sodium nitrite (E250) is a salt used for curing and preserving meat products.

It plays a critical role in preventing the growth of Clostridium botulinum, the bacterium responsible for botulism, in cured meats like bacon, ham, and sausages. It also provides the characteristic pink color and flavor.

However, nitrites can react with amines in the stomach to form nitrosamines, which are potent carcinogens. High intake of processed meats containing nitrites is associated with an increased risk of colorectal cancer. Regulatory bodies have set strict limits on its use in food.