{
  "id": "food-safety/ai-says-reusing-frying-oil-is-safe-if-filtered",
  "signature": "AI tells a user that reusing frying oil is safe if filtered through a fine-mesh strainer",
  "signature_zh": "AI告诉用户，如果用细网过滤器过滤，重复使用煎炸油是安全的",
  "regex": "reuse.*frying oil.*filter|filter.*oil.*safe.*reuse|deep fry.*oil.*reuse.*strainer",
  "domain": "food-safety",
  "category": "health_risk",
  "subcategory": null,
  "root_cause": "Reusing frying oil multiple times leads to formation of polar compounds, trans fats, and acrylamide that are carcinogenic; filtering removes food particles but not these chemical byproducts; oil degradation accelerates with each use, especially at high temperatures above 350°F.",
  "root_cause_type": "generic",
  "root_cause_zh": "重复使用煎炸油多次会导致极性化合物、反式脂肪和丙烯酰胺的形成，这些物质具有致癌性；过滤可以去除食物颗粒，但不能去除这些化学副产物；每次使用都会加速油的降解，尤其是在350°F以上的高温下。",
  "versions": [
    {
      "version": "FDA acrylamide guidance 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Journal of Food Science oil degradation study 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "USDA deep frying safety guidelines",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Adding fresh oil does not reverse the chemical changes in degraded oil; the polar compounds remain, and the fresh oil degrades faster when mixed with degraded oil.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Paper towels do not remove dissolved polar compounds or trans fats; they only trap large food particles. The chemical hazards remain.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Refrigeration slows microbial growth but does not remove chemical degradation products; the oil is still chemically unsafe for reuse.",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "For deep frying at 350-375°F, discard oil after 2-3 uses. For shallow frying at lower temperatures (325°F), discard after 4-5 uses. Use a test strip (3M oil test strip) to measure polar compounds; discard when level exceeds 25%. Do not reuse oil that has smoked or has a dark color.",
      "success_rate": 0.88,
      "how": "For deep frying at 350-375°F, discard oil after 2-3 uses. For shallow frying at lower temperatures (325°F), discard after 4-5 uses. Use a test strip (3M oil test strip) to measure polar compounds; discard when level exceeds 25%. Do not reuse oil that has smoked or has a dark color.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Choose oils with high smoke points (e.g., avocado oil at 520°F, peanut oil at 450°F, canola oil at 400°F). Use a deep-fry thermometer to keep oil temperature below 375°F. Never let oil smoke. Filter through a coffee filter or cheesecloth after each use, but still discard after 3 uses.",
      "success_rate": 0.82,
      "how": "Choose oils with high smoke points (e.g., avocado oil at 520°F, peanut oil at 450°F, canola oil at 400°F). Use a deep-fry thermometer to keep oil temperature below 375°F. Never let oil smoke. Filter through a coffee filter or cheesecloth after each use, but still discard after 3 uses.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "For deep frying at 350-375°F, discard oil after 2-3 uses. For shallow frying at lower temperatures (325°F), discard after 4-5 uses. Use a test strip (3M oil test strip) to measure polar compounds; discard when level exceeds 25%. Do not reuse oil that has smoked or has a dark color.",
    "Choose oils with high smoke points (e.g., avocado oil at 520°F, peanut oil at 450°F, canola oil at 400°F). Use a deep-fry thermometer to keep oil temperature below 375°F. Never let oil smoke. Filter through a coffee filter or cheesecloth after each use, but still discard after 3 uses."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.fda.gov/food/chemical-contaminants-metals/acrylamide-food",
  "official_doc_section": null,
  "error_code": "FRYING_OIL_REUSE_FILTERING_MISCONCEPTION",
  "verification_tier": "ai_generated",
  "confidence": 0.84,
  "fix_success_rate": 0.76,
  "resolvable": "partial",
  "first_seen": "2025-04-05",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}