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  1. Food additive | Definition, Types, Uses, & Facts | Britannica

    food additive, any of various chemical substances added to foods to produce specific desirable effects. Additives such as salt, spices, and sulfites have been used since ancient times to preserve foods and make them more palatable.

  2. Food additive - Preservatives, Safety, Regulation | Britannica

    Food additive - Preservatives, Safety, Regulation: Food preservatives are classified into two main groups: antioxidants and antimicrobials. Antioxidants are compounds that delay or prevent the deterioration of foods by oxidative mechanisms.

  3. Rubber - Additives, Processing, Properties | Britannica

    Rubber - Additives, Processing, Properties: A number of ingredients are added to both natural and synthetic rubber in order to obtain certain desirable properties. By convention, mix formulations begin with the amount of the designated elastomer—for instance, natural rubber (NR), butadiene rubber (BR), or styrene-butadiene rubber (SBR ...

  4. Emulsifier | Definition, Types, & Uses | Britannica

    emulsifier, in foods, any of numerous chemical additives that encourage the suspension of one liquid in another, as in the mixture of oil and water in margarine, shortening, ice cream, and salad dressing. A number of emulsifiers are derived from algae, …

  5. Chemical synthesis | Organic & Inorganic Reactions | Britannica

    chemical synthesis, the construction of complex chemical compounds from simpler ones. It is the process by which many substances important to daily life are obtained. It is applied to all types of chemical compounds, but most syntheses are of organic molecules.

  6. Preservative | Definition, Examples, & Uses | Britannica

    Preservative, in foods, any of numerous chemical additives used to prevent or retard spoilage caused by chemical changes, such as oxidation or the growth of mold. Along with emulsifying and stabilizing agents, preservatives also help to maintain freshness of appearance and consistency.

  7. Additive Definition & Meaning | Britannica Dictionary

    ADDITIVE meaning: something (such as a chemical) that is added in small amounts to a substance to improve it in some way

  8. Definition, Properties, & Plastic Pollution - Britannica

    5 days ago · Other chemicals, such as phthalates, polybrominated diphenyl ethers (PBDEs), and tetrabromobisphenol A (TBBPA), are typically also present in microplastics, and many of these chemical additives leach out of the plastics after entering the …

  9. Food additive - Artificial, Natural, Sugar Substitutes | Britannica

    Food additive - Artificial, Natural, Sugar Substitutes: Sucrose, or table sugar, is the standard on which the relative sweetness of all other sweeteners is based. Because sucrose provides energy in the form of carbohydrates, it is considered a nutritive sweetener.

  10. Stabilizer | chemistry | Britannica

    In food additive: Processing agents. Stabilizers and thickeners have many functions in foods. Most stabilizing and thickening agents are polysaccharides, such as starches or gums, or proteins, such as gelatin. The primary function of these compounds is to act as thickening or gelling agents that increase the viscosity of the… Read More; ice cream

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