{
  "id": 6810141,
  "title": "Poor foam stability in gluten-free beers is associated with distinct protein composition compared with barley-malt beers",
  "url": "https://urgent.news/2026/09/11/poor-foam-stability-in-gluten-free-beers-is-associated-with-distinct",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-11T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.04.749538v1?rss=1"
  },
  "original_language": "en",
  "account": "Researchers delved into the molecular reasons behind the inferior foam stability observed in gluten-free (GF) beers in comparison to conventional barley malt-based beers. The objective was to identify protein-level factors that contribute to this disparity. To conduct the study, three commercially available GF beers, including two lagers made from rice or sorghum, and one pale ale brewed from a blend of millet, buckwheat, and rice, were analyzed alongside two barley-malt beers, comprising a lager and a pale ale. The soluble proteins were extracted from freeze-dried beer powder using a cocktail of trichloroacetic acid and acetone solution. The protein profiles were examined via sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and the proteomes were characterized and compared using label-free quantitative liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS).\n\nThe findings revealed that GF beers exhibited lower soluble protein concentrations and significantly lower foam stability when compared to the barley beers. The SDS-PAGE analysis unveiled fewer and weaker protein bands in GF beers when juxtaposed with those in barley beers. Proteomic profiling, on the other hand, showcased that barley beers were rich in known foam-active proteins, particularly lipid transfer protein 1 (LTP1) and Protein Z (serpin family members). However, these proteins were either absent or present at very low levels in GF beers.",
  "summary": "Why was the work done?: Gluten-free (GF) beers typically exhibit poorer foam stability than conventional barley malt-based beers, yet the molecular basis underlying this difference remains poorly understood. This study aimed to investigate protein-level factors associated with foam stability in GF and barley beers. How was the work done?: Three commercially produced GF beers, comprising two…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}