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Beef sirloin vs. Flank steak — In-Depth Nutrition Comparison

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The main differences between Beef sirloin and Flank steak

  • Beef sirloin is richer in Selenium, Vitamin B3, Vitamin B6, Zinc, and Phosphorus, yet Flank steak is richer in Vitamin B12, and Monounsaturated Fat.
  • Daily need coverage for Selenium from Beef sirloin is 17% higher.
  • Beef sirloin contains less Saturated Fat.

Food types used in this article are Beef, top sirloin, steak, separable lean only, trimmed to 0" fat, select, cooked, broiled and Beef, flank, steak, separable lean and fat, trimmed to 0" fat, all grades, cooked, broiled.

Infographic

Beef sirloin vs Flank steak infographic
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Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 19% 6.6% 36% 72% 28% 155% 108% 8.6% 1.4% 212%
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 16% 6% 30% 65% 27% 134% 90% 7.3% 1.2% 160%
Contains more MagnesiumMagnesium +17.4%
Contains more PotassiumPotassium +20.9%
Contains more ZincZinc +16.3%
Contains more PhosphorusPhosphorus +20.5%
Contains more ManganeseManganese +22.2%
Contains more SeleniumSelenium +32.3%
Contains less SodiumSodium -15.2%
~equal in Calcium ~20mg
~equal in Iron ~1.74mg
~equal in Copper ~0.082mg

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 0% 0% 7.8% 0% 22% 38% 169% 36% 157% 184% 3.5% 7.5% 64%
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 0% 0% 7.6% 0% 19% 31% 138% 33% 134% 204% 3.5% 6.8% 57%
Contains more Vitamin B1Vitamin B1 +17.3%
Contains more Vitamin B2Vitamin B2 +22.6%
Contains more Vitamin B3Vitamin B3 +22.2%
Contains more Vitamin B5Vitamin B5 +11.4%
Contains more Vitamin B6Vitamin B6 +17.6%
Contains more CholineCholine +11.3%
Contains more Vitamin B12Vitamin B12 +10.9%
~equal in Vitamin C ~0mg
~equal in Vitamin A ~0IU
~equal in Vitamin E ~0.38mg
~equal in Vitamin D ~µg
~equal in Vitamin K ~1.4µg
~equal in Folate ~9µg

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
31% 5% 64%
Protein: 30.8 g
Fats: 5.03 g
Carbs: 0 g
Water: 63.58 g
Other: 0.59 g
28% 8% 64%
Protein: 27.66 g
Fats: 8.23 g
Carbs: 0 g
Water: 64.17 g
Other: 0 g
Contains more ProteinProtein +11.4%
Contains more OtherOther +-1083.3%
Contains more FatsFats +63.6%
~equal in Carbs ~0g
~equal in Water ~64.17g

Fat Type Comparison

Fat type breakdown side-by-side comparison
47% 49% 5%
Saturated Fat: Sat. Fat 1.915 g
Monounsaturated Fat: Mono. Fat 2.006 g
Polyunsaturated fat: Poly. Fat 0.185 g
48% 47% 5%
Saturated Fat: Sat. Fat 3.395 g
Monounsaturated Fat: Mono. Fat 3.317 g
Polyunsaturated fat: Poly. Fat 0.322 g
Contains less Sat. FatSaturated Fat -43.6%
Contains more Mono. FatMonounsaturated Fat +65.4%
Contains more Poly. FatPolyunsaturated fat +74.1%

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Beef sirloin Flank steak
Lower in Cholesterol ok
Lower in Sodium ok
Lower in Saturated Fat ok
Rich in minerals ok
Rich in vitamins ok
Lower in Sugar Equal
Lower in Glycemic Index Equal
Lower in price Equal

All nutrients comparison - raw data values

Nutrient Beef sirloin Flank steak Opinion
Calories 177kcal 192kcal Flank steak
Protein 30.8g 27.66g Beef sirloin
Fats 5.03g 8.23g Flank steak
Cholesterol 81mg 79mg Flank steak
Magnesium 27mg 23mg Beef sirloin
Calcium 22mg 20mg Beef sirloin
Potassium 410mg 339mg Beef sirloin
Iron 1.92mg 1.74mg Beef sirloin
Copper 0.085mg 0.082mg Beef sirloin
Zinc 5.7mg 4.9mg Beef sirloin
Phosphorus 253mg 210mg Beef sirloin
Sodium 66mg 56mg Flank steak
Vitamin E 0.39mg 0.38mg Beef sirloin
Manganese 0.011mg 0.009mg Beef sirloin
Selenium 38.9µg 29.4µg Beef sirloin
Vitamin B1 0.088mg 0.075mg Beef sirloin
Vitamin B2 0.163mg 0.133mg Beef sirloin
Vitamin B3 9.001mg 7.363mg Beef sirloin
Vitamin B5 0.607mg 0.545mg Beef sirloin
Vitamin B6 0.681mg 0.579mg Beef sirloin
Vitamin B12 1.47µg 1.63µg Flank steak
Vitamin K 1.4µg 1.4µg
Folate 10µg 9µg Beef sirloin
Choline 117.3mg 105.4mg Beef sirloin
Saturated Fat 1.915g 3.395g Beef sirloin
Monounsaturated Fat 2.006g 3.317g Flank steak
Polyunsaturated fat 0.185g 0.322g Flank steak
Tryptophan 0.202mg 0.182mg Beef sirloin
Threonine 1.23mg 1.105mg Beef sirloin
Isoleucine 1.401mg 1.259mg Beef sirloin
Leucine 2.45mg 2.201mg Beef sirloin
Lysine 2.603mg 2.338mg Beef sirloin
Methionine 0.802mg 0.72mg Beef sirloin
Phenylalanine 1.217mg 1.093mg Beef sirloin
Valine 1.528mg 1.372mg Beef sirloin
Histidine 0.983mg 0.883mg Beef sirloin

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Beef sirloin Flank steak
Low Calories diet ok
Low Fats diet ok
Low Carbs diet Equal
Low Glycemic Index diet Equal

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Vitamins & Minerals Daily Need Coverage Score

The summary scores indicate the extent to which this food can fulfill your daily vitamin and mineral requirements if you consume 3 servings, consisting of 100 grams of each (an approximation of 3 serving sizes).
Vitamins Daily Need Coverage Score
53%
Beef sirloin
49%
Flank steak
Minerals Daily Need Coverage Score
65%
Beef sirloin
54%
Flank steak

Comparison summary

Which food is lower in Cholesterol?
Flank steak
Flank steak is lower in Cholesterol (difference - 2mg)
Which food contains less Sodium?
Flank steak
Flank steak contains less Sodium (difference - 10mg)
Which food is lower in Saturated Fat?
Beef sirloin
Beef sirloin is lower in Saturated Fat (difference - 1.48g)
Which food is richer in minerals?
Beef sirloin
Beef sirloin is relatively richer in minerals
Which food is richer in vitamins?
Beef sirloin
Beef sirloin is relatively richer in vitamins
Which food contains less Sugar?
?
The foods are relatively equal in Sugar (0 g)
Which food is lower in glycemic index?
?
The foods have equal glycemic indexes (0)
Which food is cheaper?
?
The foods are relatively equal in price ($)

References

All the values for which the sources are not specified explicitly are taken from FDA’s Food Central. The exact link to the food presented on this page can be found below.

  1. Beef sirloin - https://fdc.nal.usda.gov/fdc-app.html#/food-details/168636/nutrients
  2. Flank steak - https://fdc.nal.usda.gov/fdc-app.html#/food-details/168733/nutrients

All the Daily Values are presented for males aged 31-50, for 2000-calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.