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Food Additives E Codes

Food Additive E150C Ammonia Caramel

A scientific review of E150c ammonia caramel, covering Class III caramel identity, ammonium processing, THI-specific ADI, 4-MEI context, beverage exposure, colour strength and QC.

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Food Additive E150C Ammonia Caramel
Technical review by FSTDESKLast reviewed: May 14, 2026. Rewritten as a specific technical review using the sources listed below.
Written by FSTDESK Editorial TeamPublished Updated

Class III caramel made with ammonium compounds

E150c ammonia caramel is Class III caramel colour. It is produced by heat treatment of carbohydrates in the presence of ammonium compounds, without sulphite compounds. This manufacturing route distinguishes E150c from E150a, E150b and E150d and gives it class-specific constituents and regulatory discussion. The class must be identified exactly in supplier specifications and labels because "caramel colour" is not enough for safety, exposure or application control.

E150c is used to provide brown colour in beverages, bakery products, sauces, confectionery and alcoholic drinks where permitted. It can deliver strong brown shade and application properties that differ from Class I and Class IV colours. Its suitability depends on pH, charge, haze, storage, flavour neutrality and the required colour intensity.

THI and class-specific ADI

EFSA established a group ADI of 300 mg/kg body weight per day for caramel colours, but also set an individual ADI of 100 mg/kg body weight per day for E150c because of uncertainty around THI, 2-acetyl-4-tetrahydroxybutylimidazole, and possible immune effects observed in animal data. This is the central safety distinction for E150c. The refined exposure assessment later found lower overall exposure estimates than earlier calculations, but high consumers of E150c could still exceed the E150c-specific ADI in some scenarios.

Product developers should therefore use the minimum effective E150c dose and document why Class III caramel is needed. High-use products such as certain beverages, bakery items or alcoholic drinks should receive careful exposure and label review. Supplier specifications should include THI-related limits and other relevant constituents.

4-MEI and by-product control

Ammonium-process caramel colours can contain 4-methylimidazole, and EFSA discussed 4-MEI together with other caramel constituents. FDA communication on 4-MEI focuses on caramel colouring made with ammonium processes, particularly Class III and IV. The technical response is not alarmist dosing by eye; it is specification control. The supplier should provide a food-grade caramel colour with relevant by-product limits, and the product should use the lowest level that achieves the approved shade.

Other constituents such as 5-HMF and furan may also be present depending on process. Caramel colours are complex heat-treated mixtures, so class, process and supplier specification matter. A procurement substitution can change by-product profile and application behaviour even when the shade seems similar.

Application and release

Finished-product trials should include shade, haze, pH, heat, storage and package exposure. In beverages, caramel colour can interact with acids, carbonation, proteins, tannins or minerals. In bakery and sauces, heat and background browning influence apparent colour. Release should use colour coordinates or absorbance, visual standard, class identity and by-product specification. E150c is useful when its brown shade and process behaviour are needed, but it requires stronger class-specific documentation than plain caramel.

Supplier change

Supplier change should include THI-related specification, 4-MEI-related specification where relevant, colour strength, pH and haze testing. For Class III caramel, a change in manufacturing process can alter both application behaviour and constituent profile. The lowest effective dose should be re-established with the new grade.

Application examples

In dark bakery fillings, E150c can support brown colour when Maillard browning alone is not consistent. In beverages, its class-specific charge and by-product profile must be reviewed before use. In sauces and gravies, heat and salt can change shade and flavour perception. In alcoholic products, clarity and precipitation should be tested. E150c is not a generic substitute for E150a or E150d; the class should be chosen because it fits the matrix and regulatory file.

Analytical release

Analytical release should include class identity, colour strength, pH, haze, THI-related specification, 4-MEI-related specification where relevant and finished-product colour after storage. The release method should also confirm minimum effective dose. If the desired shade can be achieved with less colour or with another class carrying a better fit, the formulation should be reviewed. For E150c, the technical file must explain both colour function and class-specific constituent control.

Label and class control

Class control is especially important for E150c because THI drives a separate ADI discussion. A supplier change from Class III to another class changes the risk file and potentially product behaviour. Internal documents should say ammonia caramel or E150c, not merely caramel colour. The label team should confirm local declaration requirements before launch.

Minimum effective dose

Minimum effective dose is a central control for E150c. Because Class III has class-specific constituent concerns, the product should not use more than needed for the approved shade. If shade correction is frequent during production, the root cause may be batch variation, not a need for higher routine dosage.

Investigation logic

If E150c causes unexpected haze or shade drift, check class identity, pH, proteins, minerals, heat exposure and supplier lot. If by-product limits become a concern, reducing dose, changing class or selecting a tighter supplier specification may be better than accepting routine over-colouring. The investigation should remain class-specific.

Operator control

Operators should not adjust E150c by eye during production without a colour standard. Visual over-correction can increase class-specific constituent exposure and create flavour or haze problems. The batch sheet should state dilution, addition point, mixing time and acceptable colour range.

Control limits for Food Additive E150C Ammonia Caramel

A reader using Food Additive E150C Ammonia Caramel in a plant or development lab needs to know which condition is causal. The working boundary is pigment chemistry, pH, oxygen, light, metal ions, heat exposure and package transmission; outside that boundary, a passing result can be misleading because the product may have been sampled before the defect had enough time to appear.

For Food Additive E150C Ammonia Caramel, Re-evaluation of caramel colours (E 150 a,b,c,d) as food additives is most useful for the mechanism behind the topic. Refined exposure assessment for caramel colours (E 150a, c, d) helps cross-check the same mechanism in a food matrix or processing context, while Caramel colours: consumer exposure lower than previously estimated gives the article a second point of comparison before it turns evidence into a recommendation.

A useful close for Food Additive E150C Ammonia Caramel is an action limit rather than a slogan. When the observed risk is fading, browning, hue shift, sedimented pigment or consumer-visible shade mismatch, the next action should be tied to the measurement that moved first, then confirmed on a retained or independently prepared sample before the change is locked into the specification.

Additive E150C Ammonia Caramel: additive-function specification

Food Additive E150C Ammonia Caramel should be handled through additive identity, purity, legal food category, maximum permitted level, carry-over, matrix compatibility, declaration and technological function. Those words are not filler; they define the evidence that proves whether the product, lot or process is still inside its intended control boundary.

For Food Additive E150C Ammonia Caramel, the decision boundary is dose approval, label check, market restriction, substitute selection or supplier requalification. The reviewer should trace that boundary to assay, purity statement, formulation dose calculation, finished-product check, label review and matrix performance test, then record why those data are sufficient for this exact product and title.

In Food Additive E150C Ammonia Caramel, the failure statement should name wrong additive class, excessive dose, weak function, regulatory mismatch, undeclared carry-over or poor compatibility with pH and heat history. The follow-up record should preserve sample point, method condition, lot identity, storage age and corrective action so another reviewer can repeat the conclusion.

FAQ

Why does E150c have a specific ADI?

EFSA set an individual ADI for E150c because of uncertainty around THI and possible immune effects.

Is 4-MEI relevant to E150c?

Yes. Ammonium-process caramel colours such as E150c can contain 4-MEI, so supplier specification and dose control matter.

Sources