{"topic_id":"ingredient_maize_grain","category":"ingredient-nutrition","context":"---\ntopic_id: ingredient_maize_grain\ncategory: ingredient-nutrition\ntitle: \"Maize grain (corn) — proximate composition (Feedipedia)\"\nlang: en\nsource: \"Feedipedia (INRAE/FAO), 'Maize grain | Feedipedia' (/node/556)\"\nsource_file: pdf-raw/feedipedia/ingredient_maize_grain.txt\ndate_parsed: 2026-07-22\ntokens_estimated: 200\nverification:\n  method: substring_match\n  claims: 14\n  passed: 14\n  date: 2026-07-22\n---\n\n# Maize grain (corn) — proximate composition (Feedipedia)\n\nSource: Feedipedia (INRAE/FAO open ingredient database), page \"Maize grain | Feedipedia\" (/node/556). First-hand web text extracted (tags stripped) to `pdf-raw/feedipedia/ingredient_maize_grain.txt`; composition values are verbatim from the page's proximate (\"Main analysis\") table. Units as published (% as fed / % DM / MJ/kg DM / g/kg DM). Avg/SD/Min/Max/Nb columns preserved.\n\n## Proximate composition (Main analysis)\n| Nutrient row (verbatim) |\n| --- |\n| Dry matter % as fed 86.3 1.0 81.8 90.5 11791 |\n| Crude protein % DM 9.4 0.8 7.2 12.4 11175 |\n| Crude fibre % DM 2.5 0.4 1.6 3.8 4230 |\n| NDF % DM 12.2 1.4 9.6 15.3 261 |\n| ADF % DM 3.0 0.4 2.3 3.7 259 |\n| Ether extract % DM 4.3 0.4 3.1 5.7 5643 |\n| Ash % DM 1.4 0.1 1.1 2.1 3508 |\n| Starch (polarimetry) % DM 73.4 1.6 67.5 78.8 9662 |\n| Total sugars % DM 2.1 0.6 1.1 3.5 481 |\n| Gross energy MJ/kg DM 18.7 0.1 18.6 19.1 92 * |\n| Calcium g/kg DM 0.5 0.3 0.1 1.4 547 |\n| Phosphorus g/kg DM 3.0 0.2 2.4 3.6 881 |\n| Lysine % protein 3.1 0.3 2.6 3.7 184 |\n| Methionine % protein 2.1 0.2 1.8 2.4 108 |\n\nNote: Feedipedia reports composition as Avg, SD, Min, Max, Nb (number of samples). Values are as published; interpretation is left to the API consumer.\n\nSource: `pdf-raw/feedipedia/ingredient_maize_grain.txt` (Feedipedia /node/556, 2026-07-22).\n","sources":[],"tokens_estimated":200,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}