Date: 2026-03-12Category: Not ApplicableState: Union GovernmentCountry: Europe
Commission Implementing Regulation (EU) 2026/538 of 11 March 2026 concerning the authorisation of xanthan gum produced with Xanthomonas campestris ATCC SD 7012 or DSM 23730 or CNCM I-4861 or CIP 74.23 as a feed additive for all animal species other than cats, dogs and aquatic species
Issued by European Commission
· Directorate-General for Health and Food Safety
**Executive Summary**
This document authorises xanthan gum, produced with specific *Xanthomonas campestris* strains, as a technological additive for animal nutrition. The authorisation is for all animal species except cats, dogs, and aquatic species, with a period of authorisation ending on 1 April 2036. Transitional measures allow for the continued market placement and use of existing stocks until specified dates in 2026 and 2028.
**Key Points / Main Content**
**Authorisation of Xanthan Gum**
* Xanthan gum, produced using *Xanthomonas campestris* strains ATCC SD 7012, DSM 23730, CNCM I-4861, or CIP 74.23, is authorised as a feed additive.
* It is classified under the additive category 'technological additives' and functional groups 'stabilisers' and 'thickeners'.
* The authorisation applies to all animal species, with the exception of cats, dogs, and aquatic species.
* Specific maximum and minimum content levels for xanthan gum in feed are detailed for various animal categories.
* The authorisation is subject to conditions outlined in the Annex, including specific use levels, purity criteria, and other provisions related to safe handling and use.
* The end of the period of authorisation is 1 April 2036.
**Transitional Measures**
* Feed additive xanthan gum, and premixtures containing it, produced and labelled before 1 October 2026 according to rules applicable before 1 April 2026, can continue to be marketed and used until stocks are exhausted. This applies to products intended for animal species other than cats, dogs, and aquatic species.
* Compound feed and feed materials containing this xanthan gum, produced and labelled before 1 April 2027 according to rules applicable before 1 April 2026, can continue to be marketed and used until stocks are exhausted if intended for food-producing animals.
* Compound feed and feed materials containing this xanthan gum, produced and labelled before 1 April 2028 according to rules applicable before 1 April 2026, can continue to be marketed and used until stocks are exhausted if intended for non-food producing animals.
**Other Provisions**
* The document notes that the applicant withdrew the re-evaluation application for cats and aquatic species.
* A separate assessment for the use of xanthan gum in dogs at higher levels is pending supplementary data.
* Appropriate protective measures are required to prevent adverse effects on the health of users of the additive.
* Details of analytical methods for characterisation are available via a specified link, and specifications for food additives are referenced to Regulation (EU) No 231/2012.
**Impact Analysis**
**Feed Business Operators**
* **Impact:** Operators must comply with the new authorisation conditions for xanthan gum, including specific use levels and purity requirements. They will need to adjust their production processes and labelling to adhere to the regulations. Transitional measures provide a phased approach to implementation.
* **Action Required:** Ensure production, labelling, and use of xanthan gum and related feed products comply with the specifications in the Annex. Monitor stock levels and adhere to the deadlines for transitional measures. Implement operational procedures and organisational measures to address potential risks associated with the additive's use, including the use of personal eye and breathing protective equipment where necessary.
**Consumers of Feed Additives**
* **Impact:** Users of the authorised xanthan gum will need to follow the specified maximum and minimum content levels for different animal species. They must also be aware of and implement safety precautions outlined in "Other provisions."
* **Action Required:** Incorporate xanthan gum into feed formulations within the stipulated maximum and minimum content limits. Establish and implement operational procedures and organisational measures to manage potential risks, including the use of appropriate personal protective equipment.
**Regulatory Authorities**
* **Impact:** Authorities will be responsible for overseeing compliance with this implementing regulation.
* **Action Required:** Monitor market placement and use of xanthan gum to ensure adherence to the authorised conditions and transitional measures.
Key Entities Referenced
Regulation (EC) No 1831/2003: The primary regulation governing the authorisation of feed additives for animal nutrition, which forms the basis for this commission implementing regulation.
Xanthan gum: The specific substance being authorized as a feed additive for certain animal species, produced by specific strains of Xanthomonas campestris.
Council Directive 70/524/EEC: An older directive concerning additives in feeding stuffs, which is referenced in the context of the re-evaluation process and transitional measures.
European Food Safety Authority (EFSA): The scientific body that provided opinions on the safety and efficacy of xanthan gum, influencing the authorization decision.
Commission Implementing Regulation (EU) 2026/538: The specific regulation that authorizes xanthan gum as a feed additive under specified conditions.
Official Journal EN
of the European Union L series
2026/538 12.3.2026
COMMISSION IMPLEMENTING REGULATION(EU) 2026/538
of 11 March 2026
concerning the authorisation of xanthan gum produced with Xanthomonas campestrisATCC SD
7012 or DSM 23730 or CNCM I-4861 or CIP 74.23 as a feed additive for all animal species other than
cats, dogs and aquatic species
(Text with EEA relevance)
THE EUROPEAN COMMISSION,
Having regard to the Treaty on the Functioning of the European Union,
Having regard to Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on
additives for use in animal nutrition(1), and in particular Article 9(2) thereof,
Whereas:
(1) Regulation (EC) No 1831/2003 provides for the authorisation of additives for use in animal nutrition and for the
grounds and procedures for granting such an authorisation. Article 10(2) of that Regulation provides for the
re-evaluation of additives authorised pursuant to Council Directive 70/524/EEC(2).
(2) Xanthan gum was authorised without a time limit in accordance with Directive 70/524/EEC as a feed additive for all
animal species in the group ‘emulsifying and stabilizing agents, thickeners and gelling agents’. That substance was
subsequently entered in the Register of feed additives as an existing product, in accordance with Article 10(1), point
(b), of Regulation (EC) No 1831/2003.
(3) In accordance with Article 10(2) of Regulation (EC) No 1831/2003 in conjunction with Article 7 thereof, an
application was submitted for the re-evaluation of xanthan gum as a feed additive for all animal species. The
applicant requested the additive to be classified in the additive category ‘technological additives’ and in the functional
groups ‘stabilisers’ and ‘thickeners’. The application was accompanied by the particulars and documents required
under Article 7(3) of Regulation (EC) No 1831/2003. By letter of 27 January 2023, the applicant withdrew the
application for the re-evaluation as regards the use of xanthan gum for cats and aquatic species.
(4) The European Food Safety Authority (‘the Authority’) concluded in its opinion of 6 May 2025(3), which revised its
opinion of 24 June 2021(4), that xanthan gum produced with Xanthomonas campestris ATCC SD 7012 or DSM
23730 or CNCM I-4861 or CIP 74.23 is safe for all animal species, other than cats and aquatic species, at certain
maximum use levels according to the different target species concerned and that it is safe for the consumers and the
environment. The Authority also concluded that xanthan gum produced with Xanthomonas campestris ATCC SD
7012 or DSM 23730 or CNCM I-4861 or CIP 74.23 is not irritant to the skin and is not a skin sensitiser but it could
not reach any conclusions on its potential to be an eye irritant. The Authority further concluded that xanthan gum
produced with Xanthomonas campestris ATCC SD 7012 or DSM 23730 or CNCM I-4861 or CIP 74.23 is an
efficacious stabiliser and thickener in feedingstuffs under the proposed conditions of use. The Authority also verified
the report on the method of analysis of the feed additive in feed submitted by the Reference Laboratory set up by
Regulation (EC) No 1831/2003.
(1) OJ L 268, 18.10.2003, p. 29, ELI: http://data.europa.eu/eli/reg/2003/1831/oj.
(2) Council Directive 70/524/EEC of 23 November 1970 concerning additives in feeding stuffs (OJ L 270, 14.12.1970, p. 1, ELI: http://
data.europa.eu/eli/dir/1970/524/oj).
(3) EFSA Journal2025;23(6), e9466. https://doi.org/10.2903/j.efsa.2025.9466.
(4) EFSA Journal2021;19(7):6710, 13 pp. https://doi.org/10.2903/j.efsa.2021.6710.
ELI: http://data.europa.eu/eli/reg_impl/2026/538/oj 1/7EN
OJ L, 12.3.2026
(5) The Commission offered the applicant, at its request, the possibility to submit supplementary data concerning the
safety of use of xanthan gum produced with Xanthomonas campestris ATCC SD 7012 or DSM 23730 or CNCM
I-4861 or CIP 74.23 for dogs, at a maximum level higher than the level set out in the Authority’s opinion of 6 May
2025. The use of xanthan gum produced with Xanthomonas campestris ATCC SD 7012 or DSM 23730 or CNCM
I-4861 or CIP 74.23 as a feed additive for dogs will therefore be the subject of new opinion of the Authority on the
basis of the supplementary data to be received, which will be considered in view of the adoption of a separate
measure concerning its authorisation.
(6) In view of the above, the Commission considers that xanthan gum produced with Xanthomonas campestrisATCC SD
7012 or DSM 23730 or CNCM I-4861 or CIP 74.23 satisfies the conditions provided for in Article 5 of Regulation
(EC) No 1831/2003. Accordingly, the use of that substance should be authorised for all animal species other than
cats, dogs and aquatic species. In addition, the Commission considers that appropriate protective measures should
be taken to prevent adverse effects on the health of the users of the additive.
(7) Since safety reasons do not require the immediate application of the modifications to the conditions of authorisation
of the substance concerned, it is appropriate to provide for a transitional period for interested parties to prepare
themselves to meet the new requirements resulting from the authorisation.
(8) The measures provided for in this Regulation are in accordance with the opinion of the Standing Committee on
Plants, Animals, Food and Feed,
HAS ADOPTED THIS REGULATION:
Article 1
Authorisation
The substance specified in the Annex, belonging to the additive category ‘technological additives’ and to the functional
groups ‘stabilisers’ and ‘thickeners’, is authorised as an additive in animal nutrition, subject to the conditions laid down in
that Annex.
Article 2
Transitional measures
1. The feed additive xanthan gum, as authorised pursuant to Directive 70/524/EEC and premixtures containing this
additive, which are intended for all animal species other than cats, dogs and aquatic species, and which are produced and
labelled before 1 October 2026 in accordance with the rules applicable before 1 April 2026, may continue to be placed on
the market and used until the stocks concerned are exhausted.
2. Compound feed and feed materials containing the feed additive referred to in paragraph 1, which are intended for all
animal species other than cats, dogs and aquatic species, and which are produced and labelled before 1 April 2027 in
accordance with the rules applicable before 1 April 2026, may continue to be placed on the market and used until the
stocks concerned are exhausted if they are intended for food-producing animals.
3. Compound feed and feed materials containing the feed additive referred to in paragraph 1, which are intended for all
animal species other than cats, dogs and aquatic species, and which are produced and labelled before 1 April 2028 in
accordance with the rules applicable before 1 April 2026, may continue to be placed on the market and used until the
stocks concerned are exhausted if they are intended for non-food producing animals.
2/7 ELI: http://data.europa.eu/eli/reg_impl/2026/538/ojEN
OJ L, 12.3.2026
Article 3
Entry into force
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the
European Union.
This Regulation shall be binding in its entirety and directly applicable in all Member States.
Done at Brussels, 11 March 2026.
For the Commission
The President
Ursula VON DER LEYEN
ELI: http://data.europa.eu/eli/reg_impl/2026/538/oj 3/7ANNEX
Minimum Maximum
content content
Identification
Name of the Composition, chemical formula, Maximum End of period of
number of Species or category of animal Other provisions
additive description, analytical method age mg active substance/kg authorisation
the additive
complete feed with 12 %
moisture content
Category: technological additives. Functional group: stabilisers
1d415 Xanthan Additive composition Turkeys for fattening — — 75 1. In the directions for use of 1 April 2036
gum the additive and
Xanthan gum as the sodium, Chickens for fattening or — — 56
premixtures, the storage
potassium or calcium salt. reared for laying or for
conditions and stability to
reproduction
Solid form heat treatment shall be
Minor poultry for fattening indicated.
Purity:
or reared for laying or for
Loss on drying: ≤ 15 % (105 °C, reproduction 2. For users of the additive and
2,5 hours) premixtures, feed business
Ornamental birds
operators shall establish
Total ash: ≤ 16 % on the
operational procedures and
Poultry for laying or for — — 83
anhydrous basis determined at
organisational measures to
reproduction
650 °C after drying at 105 °C for
address potential risks
four hours
Piglets of porcine species — — 100 resulting from their use.
Pyruvic acid ≥ 1,5 % Where those risks cannot be
Porcine species for — — 120
eliminated by such
Nitrogen ≤ 1,5 % fattening
procedures and measures,
Ethanol and propan-2-ol Sows of porcine species — — 146 the additive and
≤ 500 mg/kg singly or in premixtures shall be used
combination Veal calves (milk replacer) — — 233 with personal eye and
breathing protective
Ovines and caprines — — 220
Characterisation of the active equipment.
substance Ruminants (other than
ovines and caprines) and
Xanthan gum (high molecular
camelids for fattening or
weight polysaccharide gum which
reared for milk production
contains D-glucose and D-mannose
or for reproduction
as the dominant hexose units,
along with D-glucuronic acid and Ruminants (other than — — 143
pyruvic acid), produced with ovines and caprines) and
Xanthomonas campestrisATCC SD camelids for milk
7012 or DSM 23730 or CNCM production or for
I-4861 or CIP 74.23. reproduction
4/7
ELI:
http://data.europa.eu/eli/reg_impl/2026/538/oj
EN
OJ
L,
12.3.2026Minimum Maximum
content content Identification
Name of the Composition, chemical formula, Maximum End of period of
number of Species or category of animal Other provisions
additive description, analytical method age mg active substance/kg authorisation
the additive
complete feed with 12 %
moisture content
Xanthan gum yields, on dried Equids — — 220
basis, not less than 4,2 % and not
Leporids — — 88
more than 5 % of CO
2
corresponding to between 91 %
Other species (with the — — 56
and 108 % of xanthan gum
exception of cats, dogs and
CAS No: 11138-66-2 aquatic animal species)
Analytical method(1)
For the characterisation of
Xanthan gum (feed additive):
— FAO JECFA Monograph
Xanthan gum, as referred in
Commission Regulation (EU)
No 231/2012(2)
(1) Details of the analytical methods are available at the following address of the Reference Laboratory: https://joint-research-centre.ec.europa.eu/eurl-fa-eurl-feed-additives/eurl-fa-authorisation/eurl-fa-
evaluation-reports_en.
(2) Commission Regulation (EU) No 231/2012 of 9 March 2012 laying down specifications for food additives listed in Annexes II and III to Regulation (EC) No 1333/2008 of the European Parliament and of the
Council (OJ L 83, 22.3.2012, p. 1, ELI: http://data.europa.eu/eli/reg/2012/231/oj).
ELI:
http://data.europa.eu/eli/reg_impl/2026/538/oj
5/7
OJ
L,
12.3.2026
ENMinimum Maximum
content content
Identification
Name of the Composition, chemical formula, Maximum End of period of
number of Species or category of animal Other provisions
additive description, analytical method age mg active substance/kg authorisation
the additive
complete feed with 12 %
moisture content
Category: technological additives. Functional group: thickeners
1d415 Xanthan Additive composition Turkeys for fattening — — 75 1. In the directions for use of 1 April 2036
gum the additive and
Xanthan gum as the sodium, Chickens for fattening or — — 56
premixtures, the storage
potassium or calcium salt. reared for laying or for
conditions and stability to
reproduction
Solid form heat treatment shall be
Minor poultry for fattening indicated.
Purity:
or reared for laying o for
2. For users of the additive and
Loss on drying: ≤ 15 % (105 °C, reproduction
premixtures, feed business
2,5 hours)
Ornamental birds operators shall establish
Total ash: ≤ 16 % on the operational procedures and
anhydrous basis determined at Poultry for laying or for — — 83 organisational measures to
650 °C after drying at 105 °C for reproduction address potential risks
four hours resulting from their use.
Piglets of porcine species — — 100
Where those risks cannot be
Pyruvic acid ≥ 1,5 %
Porcine species for — — 120 eliminated by such
Nitrogen ≤ 1,5 % fattening procedures and measures,
the additive and
Ethanol and propan-2-ol Sows of porcine species — — 146 premixtures shall be used
≤ 500 mg/kg singly or in with personal eye and
Veal calves (milk replacer) — — 233
combination breathing protective
Ovines and caprines — — 220 equipment.
Characterisation of the active
substance Ruminants (other than
ovines and caprines) and
Xanthan gum (high molecular
camelids for fattening or
weight polysaccharide gum which
reared for milk production
contains D-glucose and D-mannose
or for reproduction
as the dominant hexose units,
along with D-glucuronic acid and Ruminants (other than — — 143
pyruvic acid), produced with ovines and caprines) and
Xanthomonas campestrisATCC SD camelids for milk
7012 or DSM 23730 or CNCM production or for
I-4861 or CIP 74.23. reproduction
6/7
ELI:
http://data.europa.eu/eli/reg_impl/2026/538/oj
EN
OJ
L,
12.3.2026Minimum Maximum
content content Identification
Name of the Composition, chemical formula, Maximum End of period of
number of Species or category of animal Other provisions
additive description, analytical method age mg active substance/kg authorisation
the additive
complete feed with 12 %
moisture content
Xanthan gum yields, on dried Equids — — 220
basis, not less than 4,2 % and not
Leporids — — 88
more than 5 % of CO
2
corresponding to between 91 %
Other species (with the — — 56
and 108 % of xanthan gum
exception of cats, dogs and
CAS No: 11138-66-2 aquatic animal species)
Analytical method(1)
For the characterisation of
Xanthan gum (feed additive):
— FAO JECFA Monograph
Xanthan gum, as referred in
Regulation (EU) No 231/2012
(1) Details of the analytical methods are available at the following address of the Reference Laboratory: https://joint-research-centre.ec.europa.eu/eurl-fa-eurl-feed-additives/eurl-fa-authorisation/eurl-fa-
evaluation-reports_en.
ELI:
http://data.europa.eu/eli/reg_impl/2026/538/oj
7/7
OJ
L,
12.3.2026
EN