{"hq_id":"hq-p-fod-000083","name":"Plant-Based Meat Alternatives (Impossible, Beyond)","category":{"primary":"food_contact","secondary":"processed_food","tags":["plant-based meat","impossible burger","beyond meat","heme","methylcellulose","ultra-processed"]},"product_tier":"FOD","overall_risk_level":"low","description":"Highly processed plant-based meat substitutes using soy/pea protein isolates, methylcellulose binders, coconut/canola oil, and (for Impossible Foods) soy leghemoglobin produced via genetically engineered yeast. While eliminating animal agriculture concerns, these are ultra-processed foods with 20+ ingredients, including carrageenan and natural flavors. Nutritional profile differs significantly from whole plant foods.","synthesis":{"derived_risk_level":"moderate","synthesis_confidence":0.574,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":0.85,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":2,"compounds_total":2,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"soy-allergic individuals, those with carrageenan sensitivity","overall_risk":"low","primary_concerns":["Ultra-processed food with 20+ ingredients — limited long-term consumption data","Soy leghemoglobin (Impossible) is a novel food ingredient with limited human consumption history","Sodium content comparable to or higher than conventional meat products"],"exposure_routes":"Direct oral ingestion"},"exposure":{"routes":["oral"],"contact_types":["oral_direct"],"users":["adult","child"],"duration":"minutes","frequency":"weekly","scenarios":["Regular consumption as meat replacement (1-5 times/week)","Children consuming plant-based alternatives in school meals","Daily consumption by vegans/vegetarians as protein staple"],"notes":"Soy leghemoglobin (Impossible) received FDA GRAS determination (2019) but long-term human consumption data is limited. Methylcellulose is a common food additive (E461) with well-established safety. Concern is primarily about ultra-processing, not individual ingredient toxicity."},"consumer_guidance":{"usage_warning":"Plant-based meats are ultra-processed foods — not equivalent to whole plant foods nutritionally. Check sodium content (often 350-500mg per serving). Soy-allergic individuals should avoid soy-based products (Impossible). Vary protein sources rather than relying solely on processed alternatives.","safer_alternatives":["Whole food plant proteins (lentils, beans, tofu, tempeh)","Minimally processed plant-based options (whole mushroom burgers)","Home-prepared bean/grain burgers"],"red_flags":[{"indicator":"Unsubstantiated safety or environmental claims","meaning":"Product may not perform as marketed.","action":"Verify through independent testing or certification."}],"green_flags":[{"indicator":"Third-party certification","meaning":"Claims independently verified.","verification":"Check certification marks."}],"what_to_ask":[{"question":"What independent testing supports the claims?","why_it_matters":"Emerging products may lack long-term data.","good_answer":"Specific verifiable certification.","bad_answer":"No testing or self-certified."}],"alternatives":[{"name":"Whole food plant proteins","notes":"lentils, beans, tofu, tempeh"},{"name":"Minimally processed plant-based options","notes":"whole mushroom burgers"},{"name":"Home-prepared bean/grain burgers","notes":"Alternative"}]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA GRAS (Generally Recognized as Safe)","citation":"21 CFR 170.36","requirements":"Individual ingredients must have GRAS status or food additive petition approval.","compliance_status":null,"effective_date":null,"enforcing_agency":"FDA","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":true,"disposal_guidance":"Regular food waste. Recycle packaging.","hazardous_waste":false,"expected_lifespan":"weeks"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-org-000194","name":"Carrageenan","role":"thickener","concentration_pct":"0.5-2"},{"hq_id":"hq-c-org-000593","name":"Carboxymethylcellulose (CMC; Sodium CMC; E466)","role":"binder","concentration_pct":"1-3"}],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000194","compound_name":null,"role":"thickener","typical_concentration":"0.5-2%"},{"hq_id":"hq-c-org-000593","compound_name":null,"role":"binder","typical_concentration":"1-3%"}],"identifiers":{"common_names":["plant-based meat alternatives (impossible, beyond)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Oscar Mayer","manufacturer":"Kraft Heinz","market_position":"mass_market","notable":"Mass-market deli meats"},{"brand":"Boar's Head","manufacturer":"Boar's Head","market_position":"premium","notable":"Premium deli meat brand"},{"brand":"Applegate","manufacturer":"Hormel","market_position":"premium","notable":"Natural and organic deli meats"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"FDA GRAS (Generally Recognized as Safe) (21 CFR 170.36)","jurisdiction":"USA","citation":"21 CFR 170.36","id":"src_b01dd342"},{"id":"fda_carrageenan_gras","type":"regulatory","title":"US FDA: Carrageenan — GRAS Status, 21 CFR 172.620, Distinction from Degraded Carrageenan (Poligeenan), USDA NOP Organic Reinstatement (2020), and Dietary Exposure Assessment (2022)","year":2022,"inherited_from_compound":"hq-c-org-000194"},{"id":"efsa_carrageenan_opinion_2018","type":"regulatory","title":"EFSA Panel on Food Additives: Re-evaluation of Carrageenan (E407) and Processed Eucheuma Seaweed (E407a) — Infant Formula Prohibition Recommendation, Adult ADI 'Not Specified,' Inflammation Pathway Assessment, and Degraded Fraction Impurity Concerns (EFSA Journal 2018;16(4):5238)","year":2018,"inherited_from_compound":"hq-c-org-000194"},{"id":"cmc_e466_chassaing2015_2022_efsa2023","type":"regulatory","title":"Carboxymethylcellulose CMC E466 CAS 9004-32-4 Sodium CMC Cellulose Gum DS 0.6-0.95 MW 50k-700k Da; EFSA 2023 ADI Withdrawn Insufficient Data No NOAEL Gut Microbiota; Chassaing 2015 Nature doi:10.1038/nature14232 C57BL/6 Mice 1% Drinking Water 750mg/kg Gut Microbiota Altered Proteobacteria Mucus Penetration Low-Grade Colitis; IL-10-/- Mice Severe Colitis; Germ-Free Mice No Effect Microbiota-Dependent; Chassaing 2022 Cell Host Microbe doi:10.1016/j.chom.2021.12.001 Human Feeding Study n=16 Crossover E. coli Flagellated Proteobacteria; TLR5 TLR4 NF-kB Inflammatory Cascade Mucin Displacement; Ice Cream Ice Crystal Control Cream Cheese Dressings Beverages; Pharmaceutical Tablet Binder Disintegrant Laxative 1.5-6g/day; Prior ADI 0-25 mg/kg/day Withdrawn; FDA GRAS Not Re-Evaluated","year":2023,"inherited_from_compound":"hq-c-org-000593"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-13T22:22:41.040Z"}}