# Safety and efficacy of a feed additive consisting of a tincture derived from the leaves of Eucalyptus globulus Labill. (eucalyptus tincture) for all animal species (FEFANA asbl)

**Authors:** Vasileios Bampidis, Giovanna Azimonti, Maria de Lourdes Bastos, Henrik Christensen, Birgit Dusemund, Mojca Durjava, Maryline Kouba, Marta López‐Alonso, Secundino López Puente, Francesca Marcon, Baltasar Mayo, Alena Pechová, Mariana Petkova, Fernando Ramos, Roberto Edoardo Villa, Ruud Woutersen, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Yvette Dirven, Paola Manini, Birgit Dusemund

PMC · DOI: 10.2903/j.efsa.2024.8801 · EFSA Journal · 2024-05-17

## TL;DR

This paper evaluates the safety and effectiveness of eucalyptus tincture as a feed additive for all animal species.

## Contribution

The study provides safety thresholds for eucalyptus tincture in animal feed and identifies species-specific concerns.

## Key findings

- Eucalyptus tincture is safe for short-living animals at specified feed levels.
- No consumer safety concerns arise from using the tincture at these levels.
- The tincture is irritant to skin and eyes and a potential sensitiser.

## Abstract

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a tincture from the leaves of Eucalyptus globulus Labill. (eucalyptus tincture) when used as a sensory additive for all animal species. The product is a ■■■■■ solution, with a dry matter content of ~ 1.86%, which contains on average 0.454% phenolic acids and flavonoids (of which 0.280% was gallic acid), 0.0030% 1,8‐cineole and 0.00012% methyleugenol. In the absence of analytical data on the occurrence of mono‐ or diformylated adducts of acylphloroglucinols with terpenes in the tincture and in the absence of toxicity data, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) could not conclude on the use of eucalyptus tincture for long‐living and reproductive animals. For short‐living animals (species for fattening), the additive was considered of no concern at 4 mg/kg complete feed for chickens for fattening, 5 mg/kg for turkeys for fattening, 6 mg/kg for piglets and rabbits for meat production, 7 mg/kg for pigs for fattening, 16 mg/kg for veal calves (milk replacer), 14 mg/kg for cattle for fattening, sheep/goats and horses for fattening, and 15 mg/kg for salmonids. These levels were extrapolated to physiologically related minor species. No safety concern would arise for the consumer from the use of eucalyptus tincture up to the levels in feed considered of no concern. Eucalyptus tincture should be considered as irritant to skin and eyes, and as a dermal and respiratory sensitiser. The use of eucalyptus tincture as a flavour in animal feed was not expected to pose a risk for the environment. Since the leaves of E. globulus and their preparations were recognised to flavour food and their function in feed would be essentially the same, no demonstration of efficacy was considered necessary.

## Linked entities

- **Chemicals:** gallic acid (PubChem CID 370), 1,8-cineole (PubChem CID 2758), methyleugenol (PubChem CID 7127)

## Full-text entities

- **Diseases:** toxicity (MESH:D064420)
- **Chemicals:** phenolic acids (MESH:C017616), methyleugenol (MESH:C005223), Eucalyptus tincture (-), terpenes (MESH:D013729), flavonoids (MESH:D005419), gallic acid (MESH:D005707), 1,8-cineole (MESH:D000077591)
- **Species:** Meleagris gallopavo (common turkey, species) [taxon 9103], Sus scrofa (pig, species) [taxon 9823], Salmonidae (salmonids, family) [taxon 8015], Gallus gallus (bantam, species) [taxon 9031], Equus caballus (domestic horse, species) [taxon 9796], Bos taurus (bovine, species) [taxon 9913], Eucalyptus globulus (blue gum, species) [taxon 34317], Capra hircus (domestic goat, species) [taxon 9925], Oryctolagus cuniculus (domestic rabbit, species) [taxon 9986], Ovis aries (domestic sheep, species) [taxon 9940]

## Full text

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## References

43 references — full list in the complete paper: https://tomesphere.com/paper/PMC11099768/full.md

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Source: https://tomesphere.com/paper/PMC11099768