Beef Loin
Beef Loin: Nutrition, History and Cooking Guide
The beef loin is one of the most prized primal cuts, running along the top of the animal's back from the rib to the hip. The muscles in this region do very little work during the cow's life, making the loin naturally tender and highly valued. It is divided into the short loin (from which T-bone, porterhouse, and strip steaks are cut) and the sirloin (yielding top sirloin steaks and roasts). The tenderloin also runs through the loin primal. Loin cuts have been the centrepiece of fine beef dining across Europe and North America for centuries. The sirloin roast was the traditional Sunday roast in prosperous Victorian England, and loin steaks remain the steaks of choice in restaurants from London to Tokyo. Their tenderness relative to other parts of the animal commands a premium price at the butcher and restaurant alike.
Nutritional Value of Beef Loin
Beef loin provides 224 kcal and 20.6 g of protein per 100 g, with 15 g of fat of which 6.1 g is saturated — figures that reflect the range of cuts across this primal. Individual loin cuts vary considerably: tenderloin is leaner, while well-marbled strip steaks are fattier. Loin cuts provide complete protein, B12, zinc, selenium, phosphorus, and niacin in excellent quantities per serving.
Health Benefits of Beef Loin
Loin cuts provide an outstanding package of high-quality protein alongside the key micronutrients associated with red meat: B12, zinc, and haem iron. These nutrients contribute to neurological health, immune function, oxygen transport, and energy metabolism. As with all red meat, moderate consumption — up to 500 g cooked per week — is the mainstream nutritional guidance.
How to Select and Store Beef Loin
Choose loin steaks with consistent red colour and marbling appropriate to the specific cut — tenderloin should be lean and firm; strip steaks benefit from fine marbling. Loin roasts should be well-covered in a fat cap that will baste the meat during cooking. Refrigerate for three to four days; freeze for up to four months.
How to Cook Beef Loin
Loin steaks are best cooked quickly over high heat — pan-searing, grilling, or barbecuing to medium-rare. They develop an excellent, flavourful crust at high heat. Season generously with salt and pepper before cooking. Rest all steaks for at least five minutes before cutting. Loin roasts should be seared at high initial heat then finished at moderate temperature (180°C) to desired internal temperature, resting well before carving.
Micronutrients (per 100g, cooked)
| Nutrient | Amount | % adult reference intake |
|---|---|---|
| Minerals | ||
| Iron | 1.63 mg | 11% |
| Calcium | 22 mg | 3% |
| Magnesium | 23 mg | 8% |
| Potassium | 340 mg | 10% |
| Sodium | 57 mg | 4% |
| Chloride | not measured | . |
| Phosphorus | 213 mg | 39% |
| Zinc | 4.85 mg | 51% |
| Copper | 0.07 mg | 6% |
| Manganese | 0.01 mg | 1% |
| Iodine | not measured | . |
| Selenium | 28.8 ug | 38% |
| Vitamins | ||
| Vitamin A | 0 ug | 0% |
| Vitamin C | 0 mg | 0% |
| Vitamin D | not measured | . |
| Vitamin E | 0.45 mg | 11% |
| Vitamin K | 1.6 ug | 2% |
| Vitamin B1 (thiamin) | 0.08 mg | 8% |
| Vitamin B2 (riboflavin) | 0.14 mg | 11% |
| Vitamin B3 (niacin) | 6.98 mg | 41% |
| Vitamin B5 (pantothenic acid) | 0.53 mg | 8% |
| Vitamin B6 | 0.59 mg | 42% |
| Vitamin B7 (biotin) | not measured | . |
| Vitamin B9 (folate) | not measured | . |
| Vitamin B12 | 1.38 ug | 92% |
Source: USDA SR Legacy, fdc 168720 (matched record: "Beef, loin, top loin, separable lean and fat, trimmed to 1/8" fat, select, cooked, grilled"). N = present but not quantified; Tr = trace; not measured = no value in the source.
What this food is a source of
High in by content (per 100g): Vitamin B12 (92%), Zinc (51%), Vitamin B6 (42%), Vitamin B3 (niacin) (41%), Phosphorus (39%), Selenium (38%).
These figures are the amount in the food. How much the body absorbs can vary, see each nutrient's entry for detail.