{
  "url": "https://openlegislation.uk/eu-regulation-2011-142/annex-IV/chapter-IV/section-2/division-A/division-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2011-142/annex-IV/chapter-IV/section-2/division-A/division-2.json",
  "legislation": "eur/2011/142",
  "legislation_title": "Commission Regulation (EU) No 142/2011 of 25 February 2011 implementing Regulation (EC) No 1069/2009 of the European Parliament and of the Council laying down health rules as regards animal by-products and derived products not intended for human consumption and implementing Council Directive 97/78/EC as regards certain samples and items exempt from veterinary checks at the border under that Directive (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2011-142",
  "path": "annex/IV/chapter/IV/section/2/division/A/division/2",
  "kind": "division",
  "number": "2",
  "heading": "Processing method",
  "text": "Alkaline hydrolysis shall be carried out according to the following processing standards:\n(a)Either a sodium hydroxide (NaOH) or potassium hydroxide (KOH) solution (or a combination thereof) must be used in an amount that assures approximate molar equivalency to the weight, type and composition of the animal by-products to be digested.\nIn the case of high fat in the animal by-products that neutralises the base, the added base must be adjusted so that the molar equivalency referred to is achieved.\n(b)Animal by-products must be placed in a steel alloy container. The measured amount of alkali must be added either in solid form or as a solution as referred to in point (a).\n(c)The container must be closed and the animal by-products and alkali mixture must be heated to a core temperature of at least 150 °C and at a pressure (absolute) of at least 4 bars for at least:\n(i)three hours without interruption;\n(ii)six hours without interruption in case of treatment of animal by-products referred to in Article 8(a)(i) and (ii) of Regulation (EC) No 1069/2009.\nHowever, materials derived from Category 1 materials comprising of animals killed in the context of TSE eradication measures which are either ruminants not requiring TSE testing or ruminants which have been tested with a negative result in accordance with Article 6(1) of Regulation (EC) No 999/2001 may be processed in accordance with point 2(c)(i) of this Section; or\n(iii)one hour without interruption in the case of animal by-products consisting of fish or of poultry materials.\n(d)The process must be carried out in a batch system and the material in the vessel must be constantly mixed in order to facilitate the digestion process until the tissues are dissolved and bones and teeth are softened; and\n(e)The animal by-products must be treated in such way that the requirements regarding time, temperature and pressure are achieved at the same time.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2011/142/annex/IV/chapter/IV/section/2/division/A/division/2",
    "retrieved_at": "2026-11-01T14:50:18.901897+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}