Safety evaluation of the food enzyme maltogenic amylase from the genetically modified Bacillus licheniformis strain DP‐Dzr50

food enzyme, maltogenic amylase, glucan 1,4‐α‐maltohydrolase, EC 3.2.1.133, Bacillus licheniformis, genetically modified microorganism
First published in the EFSA Journal
17 janvier 2020
Adopted
11 décembre 2019
Type
Scientific Opinion

Note: The full opinion will be published in accordance with Article 12 of Regulation (EC) No 1331/2008 once decision on confidentiality will be received from the European Commission.

Abstract

The food enzyme maltogenic amylase (glucan 1,4‐α‐maltohydrolase; EC 3.2.1.133) is produced with the genetically modified Bacillus licheniformis strain DP‐Dzr50 by Danisco US Inc. The production strain of the food enzyme contains multiple copies of a known antimicrobial resistance gene. However, based on the absence of viable cells and DNA from the production organism in the food enzyme, this is not considered to be a risk. The food enzyme is intended to be used in distilled alcohol production, starch processing for the production of glucose syrups, baking and brewing processes. Since residual amounts of the food enzyme are removed by distillation and starch processing, no dietary exposure was calculated for these processes. Based on the maximum use levels recommended for baking and brewing and individual data from the EFSA Comprehensive European Food Database, dietary exposure to the food enzyme–Total Organic Solids (TOS) was estimated to be up to 0.199 mg TOS/kg body weight (bw) per day. Genotoxicity tests did not raise a safety concern. The systemic toxicity was assessed by means of a repeated dose 90‐day oral toxicity study in rats. The Panel identified a no observed adverse effect level of at least 80 mg TOS/kg bw per day which, compared to the estimated dietary exposure, results in a margin of exposure of at least 400. Similarity of the amino acid sequence to those of known allergens was searched and three matches were found. The Panel considered that, under the intended conditions of use, the risk of allergic sensitisation and elicitation reactions by dietary exposure can be excluded in distilled alcohol production and is considered to be low in starch processing, baking and brewing. Based on the data provided, the Panel concluded that this food enzyme does not give rise to safety concerns under the intended conditions of use.

Panel members at the time of adoption

José Manuel Barat Baviera, Claudia Bolognesi, Andrew Chesson, Pier Sandro Cocconcelli, Riccardo Crebelli, David Michael Gott, Konrad Grob, Evgenia Lampi, Alicja Mortensen, Gilles Riviere, Vittorio Silano, Inger‐Lise Steffensen, Christina Tlustos, Henk van Loveren, Laurence Vernis and Holger Zorn.
Panel on Food Contact Materials, Enzymes and Processing Aids
Contact
fip [at] efsa.europa.eu
doi
10.2903/j.efsa.2020.5972
EFSA Journal 2020;18(1):5972
Question Number
On request from
European Commission