Editing Yeast extract (section)

== Dietary concerns ==
Depending on the source, yeast extract may contain [[gluten]]. Brewer's yeast are especially likely to contain the protein due to contact with the grains used in brewing. In the case of yeast autolysate however, the yeast [[protease]]s are able to degrade most of the gluten. For example, [[Marmite]] contains around 30 [[part per million]] gluten according to third-party testing, meeting the EU "very low gluten" limit but not the "gluten free" definition. Unilever reports that no cases of gluten-related reactions have been reported for Marmite.<ref>{{cite web |last1=Thompson |first1=Tricia |title=Is Marmite Gluten Free? |url=https://www.glutenfreedietitian.com/is-marmite-gluten-free/ |website=Gluten Free Dietitian |date=1 February 2011}}</ref>

Yeast extract products derived from plant feedstock are by definition [[vegan]] and [[kosher]]&ndash;[[pareve]], although some consumers prefer extra certification.<ref>{{cite news|access-date=4 November 2019|date=1 November 2019|first=Chris|last=Hook|work=7 News|title=Vegemite joins vegan movement with official certification to celebrate World Vegan Day on Friday|url=https://7news.com.au/lifestyle/food/vegemite-joins-vegan-movement-with-official-certification-to-celebrate-world-vegan-day-on-friday-c-534015}}</ref> They are also generally considered [[halal]],<ref name="Herald Sun">{{cite news |url=http://www.pressreader.com/australia/sunday-herald-sun/20100124/281586646730725|title=Vege spite spreads|last=Hargreaves|first=Wendy|work=Sunday [[Herald Sun]]|date=24 January 2010|access-date=8 August 2013}}</ref> despite the concern that the yeast has come into contact with alcohol.