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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.

LUTEIN is a xanthophyll and one of 600 known naturally occurring carotenoids. Lutein is extracted from the petals of African marigold (Tagetes erecta). It is approved for use in the EU and Australia and New Zealand. In the United States lutein may not be used as a food coloring for foods intended for human consumption, but can be added to animal feed.

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.

Potassium phosphate is a generic term for the salts of potassium and phosphate ions including: Monopotassium phosphate (KH2PO4) (Molar mass approx: 136 g/mol) Dipotassium phosphate (K2HPO4) (Molar mass approx: 174 g/mol) Tripotassium phosphate (K3PO4) (Molar mass approx: 212.27 g/mol)As food additives, potassium phosphates have the E number E340.

Carrageenan (E407), derived from red seaweed, is widely employed in the food industry as a gelling, thickening, and stabilizing agent, notably in dairy and meat products.

It can exist in various forms, each imparting distinct textural properties to food.

However, its degraded form, often referred to as poligeenan, has raised health concerns due to its potential inflammatory effects and its classification as a possible human carcinogen (Group 2B) by the International Agency for Research on Cancer (IARC).

Nevertheless, food-grade carrageenan has been deemed safe by various regulatory bodies when consumed in amounts typically found in food.

Pectins (E440) are natural carbohydrates, predominantly found in fruits, that act as gelling agents in the food industry, creating the desirable jelly-like texture in jams, jellies, and marmalades.

Pectins stabilize and thicken various food products, such as desserts, confectioneries, and beverages, ensuring a uniform consistency and quality.

Recognized as safe by various health authorities, pectins have been widely used without notable adverse effects when consumed in typical dietary amounts.