# Safety and efficacy of a feed additive consisting of Lactiplantibacillus plantarum DSM 34271 as an acidity regulator additive for all animal species (Lactosan GmbH & Co.KG)

**Authors:** Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Montserrat Anguita, Rafaella Christodoulou, Jaume Galobart, Matteo L. Innocenti, Jordi Ortuño, Jordi Tarrés‐Call, Yolanda García‐Cazorla

PMC · DOI: 10.2903/j.efsa.2026.9874 · 2026-01-19

## TL;DR

This paper evaluates the safety and effectiveness of Lactiplantibacillus plantarum DSM 34271 as a feed additive for regulating acidity in animal feed.

## Contribution

The study confirms the safety and efficacy of L. plantarum DSM 34271 as an acidity regulator in feed for all animal species.

## Key findings

- L. plantarum DSM 34271 is safe for target species, consumers, and the environment.
- The additive can reduce the pH of plant-origin feed materials when used at a minimum concentration of 1.0 × 10⁸ CFU/kg.
- The additive is a skin and respiratory sensitiser, posing risks via dermal and respiratory exposure.

## Abstract

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on Lactiplantibacillus plantarum DSM 34271 when used as a technological additive (acidity regulator) in feed for all animal species. The additive is intended to be incorporated into feed materials of plant origin with high moisture content (dry matter range between 25 and 40%). The bacterial species L. plantarum is considered by EFSA to be suitable for the qualified presumption of safety (QPS) approach to safety assessment. The identity of the strain has been clearly established and it did not show acquired resistance to antibiotics of human and veterinary importance. The FEEDAP Panel concluded that the preparation of L. plantarum DSM 34271 is safe for the target species, consumers and the environment. Regarding user safety, the additive should be considered as a skin and respiratory sensitiser. Exposure of users via dermal and respiratory routes is considered a risk. The FEEDAP Panel concluded that incorporation of L. plantarum DSM 34271 at a minimum concentration of 1.0 × 108 CFU/kg feed material has the potential to reduce the pH of feed materials of plant origin at the proposed conditions of use.

## Linked entities

- **Species:** Lactiplantibacillus plantarum (taxon 1590)

## Full-text entities

- **Species:** Lactiplantibacillus plantarum (species) [taxon 1590], Homo sapiens (human, species) [taxon 9606]

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Source: https://tomesphere.com/paper/PMC12813625