What is the safe internal temperature for pork loin?

The USDA 2011 update (most important pork-cooking change in decades)

In 2011, USDA lowered safe pork internal temperature from 160°F to 145°F (with 3-minute rest). This reflected: - Modern pig farming + USDA monitoring eliminated trichinosis in commercial pork - Updated pasteurization research showing 145°F + rest = fully safe - Industry alignment with beef cooking standards (also 145°F)

Modern safe targets

Note: ground pork is DIFFERENT — USDA still requires 160°F for ground pork due to grinding mixing surface bacteria throughout. Whole cuts (loin, chop, roast) safe at 145°F.

Why "pink pork is safe"

At 145°F (medium): - Internal proteins denatured + pasteurized - Trichinosis impossible (commercial pork) - Bacterial contamination eliminated by heat + time - Pink color = juice retention indicator (myoglobin not fully oxidized)

Old "well-done" 160°F+ was overkill — born from 1950s concern about trichinosis (when pork was raised on garbage, infected with parasite). Modern commercial pork is verified safe at 145°F.

Temperature targets by application

Pan-seared pork loin chops: - High heat (450°F+); 4-5 min per side for 1-inch chop - Pull at 140°F (rest carries to 145°F) - Total cook: 8-10 min - Result: juicy + slightly pink center

Roasted pork loin (whole roast): - 350°F oven; 15-20 min per pound - Pull at 140°F; rest 5-10 min - For 4 lb roast: ~60-80 min total - Result: medium-rare to medium center

Sous vide pork loin: - 140°F (60°C) for 2-4 hours = juicy + safe - Or 145°F for 1-3 hours = traditional doneness - Sear after for crust - Result: edge-to-edge tender + juicy

Slow-cooked pork loin (less common; usually shoulder): - 200°F oven; 4-6 hours - Pull at 145°F internal; or continue to 195°F for fall-apart - Less optimal than shoulder (loin = lean cut, doesn't benefit from long cook)

Grilled pork loin: - Medium-direct heat (375°F) - 5-7 min per side for 1-inch chop; 12-15 min for 1.5-inch - Use thermometer; target 140°F before pull - Rest 5 min; carries to 145°F

Pasteurization equivalency (sous vide chart)

For lower-temp cooking, FDA/USDA accept time-temperature equivalency:

Sous vide at 140°F for 2-4 hours = fully safe + perfect texture.

Why pork loin is easy to overcook

Pork loin is very lean — 8-12% fat (vs 25-35% in shoulder). Lean = dries fast above 145°F. Signs of overcooking: - White color throughout (vs pink at center) - Stiff/firm texture (vs juicy) - "Squeaky" mouthfeel (overcooked protein) - Dry/dusty bite

Once over 150°F: very hard to recover. Use thermometer + pull early.

Brining + dry-brining for safer cooking

Dry brine 12-24 hours before cooking: - Salt 1/2-1 tsp per pound of pork - Sit uncovered in fridge - Result: 15-20% juicier meat at same internal temperature - Forgiving of slight overcook (still juicy at 150°F)

Common pitfalls

• "Old USDA" 160°F+ targeting: trains generations of dry pork. Update to 145°F.
• No thermometer: visual cues unreliable; pork looks done before center reaches temp.
• Forgetting rest: pork pulled + sliced immediately loses 10-15% juice.
• Pulled too late: carryover heat continues 5-10°F after removal. Pull at 140°F for 145°F final.
• Ground pork at 145°F: NO — ground requires 160°F. Stick to USDA distinction.

Cross-reference: see /pages/what-temperature-for/cooking-pork for general pork cooking + /pages/what-temperature-for/sous-vide-pork-tenderloin for sous vide method + /pages/how-long-does/curing-bacon for adjacent pork curing.