Friand a la viande

β-Carotene is an organic, strongly colored red-orange pigment abundant in plants and fruits. It is a member of the carotenes, which are terpenoids (isoprenoids), synthesized biochemically from eight isoprene units and thus having 40 carbons. Among the carotenes, β-carotene is distinguished by having beta-rings at both ends of the molecule. β-Carotene is biosynthesized from geranylgeranyl pyrophosphate.β-Carotene is the most common form of carotene in plants. When used as a food coloring, it has the E number E160a. The structure was deduced by Karrer et al. in 1930. In nature, β-carotene is a precursor (inactive form) to vitamin A via the action of beta-carotene 15,15'-monooxygenase.Isolation of β-carotene from fruits abundant in carotenoids is commonly done using column chromatography. It can also be extracted from the beta-carotene rich algae, Dunaliella salina. The separation of β-carotene from the mixture of other carotenoids is based on the polarity of a compound. β-Carotene is a non-polar compound, so it is separated with a non-polar solvent such as hexane. Being highly conjugated, it is deeply colored, and as a hydrocarbon lacking functional groups, it is very lipophilic.

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.

Citric acid is a natural organic acid found in citrus fruits such as lemons, oranges, and limes.

It is widely used in the food industry as a flavor enhancer, acidulant, and preservative due to its tart and refreshing taste.

Citric acid is safe for consumption when used in moderation and is considered a generally recognized as safe (GRAS) food additive by regulatory agencies worldwide.

Mono- and diglycerides of fatty acids (E471), are food additives commonly used as emulsifiers in various processed foods.

These compounds consist of glycerol molecules linked to one or two fatty acid chains, which help stabilize and blend water and oil-based ingredients. E471 enhances the texture and shelf life of products like margarine, baked goods, and ice cream, ensuring a smooth and consistent texture.

It is generally considered safe for consumption within established regulatory limits.