CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80

CAS: 977089-30-7 EMULSIFIER OR EMULSIFIER SALT, STABILIZER OR THICKENER

CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 is a food additive used as an emulsifier, stabilizer, and thickener. It is listed in the FDA Substances Added to Food inventory and produced by combining potassium carrageenan with a small proportion of polysorbate 80 to facilitate processing and functional performance in gelled food systems.

What It Is

CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 is a specialized form of the polysaccharide carrageenan, modified by the presence of potassium as the dominant counterion and a controlled fraction of the surfactant polysorbate 80. In the context of food formulation, carrageenans are a class of sulfated polysaccharides extracted from red seaweeds (Rhodophyceae) that function to thicken, stabilize, and create gels in aqueous food systems. This derivative combines the hydrocolloid properties of potassium carrageenan with the processing aid function of a small amount of polysorbate 80, an emulsifier. The ingredient is recognized under its Chemical Abstracts Service registry number 977089-30-7 and is described in the FDA Substances Added to Food inventory, where its technical functional roles are listed as an emulsifier or emulsifier salt, stabilizer, or thickener. Its role in food systems is technical rather than nutritional, and its application is generally targeted toward specific textural and structural purposes within products that are gelled or semi-solid in form. Some regulatory inventories include this composite substance to reflect the form in which carrageenan may be produced or sold for use by manufacturers, and the declaration of polysorbate 80 on ingredient labels is mandated when present in the additive to alert manufacturers and regulatory bodies to its presence. The term "emulsifier or emulsifier salt" captures the combined functionality: carrageenan’s hydrocolloid nature enables it to interact with water and macromolecules for thickening and gelation, while polysorbate 80 contributes surfactant properties that facilitate dispersion and processing.

How It Is Made

The production of potassium carrageenan with polysorbate 80 builds upon the extraction and refinement of carrageenan from marine red algae, a large family of seaweed species that include Chondrus, Eucheuma, and Gigartina genera. Raw carrageenan is typically obtained by aqueous extraction of the seaweed biomass under controlled temperature and pH conditions to solubilize the sulfated polysaccharides. After extraction, the carrageenan is purified by filtration and precipitated with alcohol or by the addition of potassium salts, which shift the equilibrium toward the desired potassium salt form of the polymer. Following recovery of the precipitated carrageenan, drying processes such as drum drying or freeze-drying are used to produce a dry, refined product. During certain stages of processing, polysorbate 80 is added in a controlled amount, generally not exceeding a small percentage of the final additive by weight, to facilitate the separation of the carrageenan sheet from drying rolls and improve process yields. This composite is then ground, blended, and formulated to meet specifications suitable for food use, where the presence of the emulsifier aids in subsequent dispersion and functional performance. Quality control measures in manufacturing are designed to ensure that the level of polysorbate 80 remains within defined limits, and that the physical characteristics of the carrageenan component conform to established standards for gelling, viscosity, and stability. While the exact manufacturing protocols vary by producer, the general approach aligns with industry practices for hydrocolloid extraction and refinement, with specific considerations for excipient addition to optimize processing efficiency. The involvement of polysorbate 80 occurs at the interface of carrageenan recovery and functional formulation, rather than as a major component of the final ingredient. Controlled processing conditions—such as temperature, pH, and alcohol concentration during precipitation—help determine the quality and consistency of the carrageenan polymer, while the polysorbate 80 addition is tightly regulated to avoid exceeding the permissible fraction for use in food systems.

Why It Is Used In Food

CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 is incorporated into certain food products because it fulfills multiple technologically important functions that food formulators seek when designing texture, stability, and appearance. The carrageenan component, a high-molecular-weight sulfated galactan, interacts with water and other food components such as proteins and polysaccharides to create thicker liquids, stable gels, and uniform suspensions. These properties are particularly valuable in products like dessert gels, dairy analogs, and other semi-solid foods where a consistent mouthfeel and structural integrity are essential. The presence of a small percentage of polysorbate 80 in the additive facilitates the dispersion of the carrageenan during processing, helping to prevent lumping and improve hydration in the aqueous phase. Polysorbate 80 is a nonionic surfactant that reduces surface tension and improves the wetting of hydrophobic particles, which can further enhance the functional performance of the carrageenan in complex food matrices. Food manufacturers often select this composite form when they require both the gelling and stabilizing power of potassium carrageenan and enhanced processing characteristics that come from improved dispersion provided by the surfactant. The additive thus supports the production of foods with desirable textures, uniform appearance, and acceptance by consumers, while also aiding manufacturing efficiency. In essence, the use of this ingredient reflects the combined benefits of hydrocolloid-mediated structuring and surfactant-assisted processing, allowing formulators to achieve targeted rheological properties in finished foods. Its use is technical: it does not contribute nutritional value, but rather helps ensure that foods maintain their quality throughout shelf life—including during thermal treatment, storage, and distribution—by ensuring stability against phase separation, syneresis, or texture loss. The addition of the small fraction of polysorbate 80 to the carrageenan also supports consistent quality and performance, which are priorities in industrial food production.

Safety And Health Research

Food-grade carrageenan and its derivatives, including potassium carrageenan with minimal polysorbate 80, have been the subject of evaluation by regulatory and scientific bodies with respect to safety when used as food additives. Scientific assessments focus on the technical functions of such additives and data relevant to their toxicological profiles, including potential effects in experimental systems and dietary exposure. Regulatory authorities generally rely on comprehensive data sets that include genotoxicity tests, subchronic and chronic toxicity studies, and considerations of exposure margins based on typical use levels. For hydrocolloid additives like carrageenan, the high molecular weight and minimal systemic absorption inform interpretations of safety because the polymer largely remains within the gastrointestinal tract as a high-molecular-weight polysaccharide. Polysorbate 80, present at low fractions in this composite, is itself recognized in regulatory frameworks as a permitted food-grade emulsifier that is metabolized and excreted via known pathways. Cumulative evidence from regulatory assessments supports the conclusion that, when used as intended and within prescribed limits, these substances fulfill their technical roles without presenting specific safety concerns at typical dietary exposures. It is important to distinguish food-grade carrageenan from forms of degraded carrageenan, which are not permitted in food and are evaluated differently due to distinct physicochemical properties. The focus of regulatory evaluations remains on ensuring that food-grade additives conform to identity and purity criteria designed to exclude low-molecular-weight fractions that could pose different biological interactions. Ongoing research in food science and toxicology continues to contribute to the understanding of carrageenan’s behavior in digestive environments and its interactions with food matrices, but authoritative assessments consistently emphasize conformity to specifications and controlled use conditions. Overall, the weight of regulatory and scientific evaluation indicates that this additive, when properly manufactured and used in compliance with regulatory provisions, aligns with established safety expectations for food hydrocolloid stabilizers and emulsifiers.

Regulatory Status Worldwide

In the United States, CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 is listed in the FDA Substances Added to Food inventory, indicating that it is recognized for use in foods in accordance with specific regulatory conditions. The Code of Federal Regulations codifies the conditions under which carrageenan and its salts may be safely produced with the use of polysorbate 80; for example, an FDA regulation specifies that carrageenan and salts of carrageenan containing polysorbate 80 at not more than five percent of the additive by weight may be produced and used for defined purposes, with the final food containing polysorbate 80 at levels not exceeding 500 parts per million. Such regulations also require appropriate labeling of the additive and adherence to provisions regarding foods for which standards of identity exist. The listing in the FDA database reflects this regulatory framework and the recognition that this form of carrageenan can be used in appropriate food applications when these conditions are met. In the European Union, generic carrageenan is permitted as a food additive with the E number designation E407, but there is no separate E number specifically assigned to the potassium salt with polysorbate 80 composite; as such, its use in the EU would be governed by the broader provisions for carrageenan and relevant food additive regulations, which may vary by member state. Regulatory assessments by organizations such as the European Food Safety Authority have evaluated the safety of food-grade carrageenan (E407) and have maintained that, when used within prescribed food categories, it does not present evidence of adverse effects. In international contexts, bodies like the Joint FAO/WHO Expert Committee on Food Additives (JECFA) develop specifications and perform safety evaluations of food additives including carrageenan, though specific monographs for this composite form may not be distinct in JECFA databases. These global and regional frameworks collectively reflect the recognition of carrageenan-based additives, including specialized forms, as functional food ingredients when used in accordance with established conditions and good manufacturing practices.

Taste And Functional Properties

In terms of sensory impact and functional behavior, CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 is essentially neutral in taste and odor, which is typical of carrageenan-based hydrocolloids when used at the low levels that accomplish textural modification. The carrageenan polymer itself is tasteless and does not introduce off-flavors into food products, allowing it to be used broadly across categories without altering the intended sensory profile of foods. As a hydrocolloid, its primary contribution is to influence the rheological properties of aqueous systems; it interacts with water molecules to increase viscosity, form gels, or maintain dispersed phases, depending on concentration, temperature, and the presence of other food components. When dispersed in water under appropriate conditions, carrageenan can form a three-dimensional network that traps water and other ingredients, resulting in thicker liquids or gelled structures. The specific functional response—whether thickening without gelling or forming a firm gel—depends on the type of carrageenan polymer present and the nature of the food matrix. In the presence of ions such as potassium, certain carrageenan types (e.g., kappa-carrageenan) form stronger, more elastic gels; this behavior is exploited in products where a defined gel structure is desired. The small incorporated fraction of polysorbate 80 does not substantially affect taste but enhances the ease with which the carrageenan disperses into aqueous systems during mixing. This ease of dispersion can reduce clumping and promote uniform hydration, leading to consistent functional performance across production batches. Functionally, the additive shows stability across a range of pH values and processing conditions typical of foods, although extreme pH or high shear environments can influence the viscosity and gelation behavior. Its thermal stability in food systems means that it retains functionality through heating and cooling cycles often encountered in processing, contributing to reliable texture and stability in the final product. The combined properties of neutral taste and robust functional performance make this ingredient suitable for a variety of applications that demand texture enhancement without compromising sensory quality.

Acceptable Daily Intake Explained

The concept of an acceptable daily intake (ADI) is a regulatory tool used to help ensure the safety of food additives by establishing a level of daily exposure that can be consumed over a lifetime without appreciable health risk. An ADI is expressed in milligrams of substance per kilogram of body weight per day and is derived by expert committees based on toxicological data from animal studies, with conservative safety factors applied to account for differences between animals and humans and variability within human populations. For food additives like carrageenan and its derivatives, regulatory bodies such as JECFA and EFSA evaluate available data to determine if an ADI can be established. In some cases, these bodies may conclude that the totality of data does not necessitate a numerical ADI because the substance is not absorbed systemically and does not present safety concerns at levels anticipated from food use; in other cases, they may identify a range of exposure that is considered acceptable. For composite forms such as potassium carrageenan with polysorbate 80, the safety evaluation accounts for the individual components and their established regulatory frameworks. Consumers should understand that an ADI is not a recommended intake level but rather a benchmark used by regulators to set limits and conditions for safe use. The presence of this ingredient in a diversified diet with multiple sources of hydrocolloid and emulsifier use is generally considered within acceptable exposure expectations when manufacturers adhere to regulatory specifications and use levels. Regulatory documents and expert evaluations provide context on how ADIs are derived and applied, and they reflect rigorous assessment of safety data with conservative uncertainty factors included.

Common Food Applications Narrative

CARRAGEENAN, POTASSIUM SALT OF, WITH POLYSORBATE 80 finds its way into a range of food products where texture, structure, and stability are priority formulation attributes. In gelled desserts, for example, this additive helps create the desired consistency that allows a product to hold its shape while also providing a smooth mouthfeel that consumers expect in pudding-like foods. In dairy analogs and products such as plant-based milk or cream alternatives, it contributes to the perception of richness and body, helping to suspend particles and minimize phase separation. In some processed cheese analogs and similar semi-solid products, it can also be used to provide body and prevent unwanted syneresis—the release of water that can occur over shelf life if stabilizers are not properly employed. The unique combination of a hydrocolloid with a processing aid also supports the manufacturing of certain confectionery gels and aerated desserts, where a reliable dispersion of the thickening component is important for achieving uniform gelation throughout the product. Because such foods often involve complex ingredient lists, the ease of incorporating and hydrating carrageenan with the aid of polysorbate 80 helps streamline production and improve batch-to-batch consistency. Additionally, products such as cream fillings, fruit preparations with suspended particulates, and savory gelled sauces may utilize this additive for its ability to maintain suspended solids and prevent settling during both processing and storage. The practical outcome in each of these examples is improved texture, visual uniformity, and sensory quality that meets consumer expectations for the category. In summary, this form of carrageenan is chosen by food formulators for systems where a combination of gelation, thickening, and technical ease of use is needed to produce foods that are stable, palatable, and consistent in quality across production cycles.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.623

EFSA

  • Notes: Specific E number and ADI not established for this composite form in available EFSA documents

JECFA

  • Notes: No specific JECFA monograph found for this composite form

Sources

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