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Usage Note

• Amino acid content is in milligrams, protein value in grams, and are measured per 100g of food weight.
• Click on column header to sort foods by name or by column's content.
• Amino-Acid Score:
  • The score is the ratio of the amino acid in the food's protein over the same amino acid in the reference protein expressed in percentage.
  • This score is for determining the limiting amino acid in a food item. A score below 100 indicates that a food's protein is incomplete. However, a score higher than 100 for a particular amino acid does not necessarily mean that a food's protein is complete. Scores of other essential amino acids of the food also have to be 100 or higher for its protein to be considered complete.
  • The limiting amino acid of a food is defined as the essential amino acid present in the lowest amount compared to a reference protein or to human requirements.

Amino Acids

Amino acids are organic compounds that combine to form proteins. When proteins are digested, amino acids are left. The human body requires a number of amino acids to grow and breakdown food.

Amino acids are classified into two groups: essential and nonessential amino acids.

• Essential amino acids cannot be made by the body and must be supplied by food. These include leucine, lysine, tryptophan, etc. Sources of essential amino acids include milk, cheese, eggs, certain meats, vegetables, nuts, and grains.
• Nonessential amino acids can be made by the body from the essential amino acids or normal breakdown of proteins. They include aspartic acid, glutamic acid, and glycine, etc.

Complete Protein

A complete protein (or whole protein) is a source of protein that contains an adequate proportion of all nine of the essential amino acids necessary for the dietary needs of humans or other animals. Some incomplete protein sources may contain all essential amino acids, but a complete protein contains them in correct proportions for supporting biological functions in the human body.

Threonine

As an essential amino acid, threonine is not synthesized in humans, hence we must ingest threonine in the form of threonine-containing proteins. In plants and microorganisms, threonine is synthesized from aspartic acid via α-aspartyl-semialdehyde and homoserine.

Our Protein and Amino Acid Online Databases

See our most complete directory of Protein and Amino Acid Online Databases with nutrient databases from the US, UK, Canada, France, Italy, Sweden, Switzerland, etc.

Threonine Food Sources

List of 120 foods highest in threonine. Threonine content is in grams per 100 grams of food weight.

Foods Rich in Threonine

Threonine (g)

Egg, white, dried

3.685

Egg, white, dried, powder, glucose reduced

3.665

Egg, white, dried, flakes, glucose reduced

3.421

Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, SUPRO

3.300

Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, ProPlus

3.300

Seal, bearded (Oogruk), meat, dried (Alaska Native)

3.228

Soy protein isolate, potassium type, crude protein basis

3.137

Soy protein isolate, potassium type

3.137

Soy protein isolate

3.137

Seaweed, spirulina, dried

2.970

Fish, cod, Atlantic, dried and salted

2.754

Whale, beluga, meat, dried (Alaska Native)

2.726

Soy protein concentrate, crude protein basis (N x 6.25), produced by acid wash

2.474

Soy protein concentrate, produced by acid wash

2.474

Soy protein concentrate, produced by alcohol extraction

2.474

Fish, whitefish, dried (Alaska Native)

2.470

Seal, bearded (Oogruk), meat, partially dried (Alaska Native)

2.438

Smelt, dried (Alaska Native)

2.390

Egg, whole, dried, stabilized, glucose reduced

2.366

Egg, whole, dried

2.273

Mollusks, whelk, unspecified, cooked, moist heat

2.136

Seeds, sesame flour, low-fat

2.081

Soy flour, defatted

2.042

Soy flour, defatted, crude protein basis (N x 6.25)

2.042

Soy flour, low-fat, crude protein basis (N x 6.25)

2.021

Leavening agents, yeast, baker's, active dry

1.990

Seeds, sunflower seed flour, partially defatted

1.959

Tofu, dried-frozen (koyadofu)

1.956

Tofu, dried-frozen (koyadofu), prepared with calcium sulfate

1.956

Foods Rich in Threonine

Threonine (g)

Soy meal, defatted, raw, crude protein basis (N x 6.25)

1.952

Soy meal, defatted, raw

1.952

Seeds, cottonseed flour, low fat (glandless)

1.843

Snacks, pork skins, plain

1.823

Egg, yolk, dried

1.819

Seeds, cottonseed meal, partially defatted (glandless)

1.816

Peanut flour, defatted

1.788

Soybeans, mature seeds, raw

1.766

Snacks, pork skins, barbecue-flavor

1.765

Soybeans, mature seeds, dry roasted

1.719

Beef, loin, top sirloin filet, boneless, separable lean only, trimmed to 0" fat, select, cooked, grilled

1.714

Beef, plate steak, boneless, inside skirt, separable lean only, trimmed to 0" fat, select, cooked, grilled

1.706

Seeds, sesame flour, partially defatted

1.674

Beef, top loin filet, boneless, separable lean only, trimmed to 1/8" fat, select, cooked, grilled

1.662

Beef, loin, top sirloin petite roast, boneless, separable lean only, trimmed to 0" fat, select, cooked,

1.634

roasted

Milk, dry, nonfat, regular, with added vitamin A and vitamin D

1.632

Milk, dry, nonfat, regular, without added vitamin A and vitamin D

1.632

Beef, rib, back ribs, bone-in, separable lean only, trimmed to 0" fat, select, cooked, braised

1.630

Meat extender

1.615

Beef, rib eye steak, boneless, lip-on, separable lean only, trimmed to 1/8" fat, select, cooked, grilled

1.613

Beef, rib eye steak, boneless, lip off, separable lean only, trimmed to 0" fat, select, cooked, grilled

1.613

Veal, leg (top round), separable lean only, cooked, braised

1.604

Milk, dry, nonfat, calcium reduced

1.603

Beef, rib eye roast, boneless, lip-on, separable lean only, trimmed to 1/8" fat, select, cooked, roasted

1.599

Beef, plate steak, boneless, outside skirt, separable lean only, trimmed to 0" fat, select, cooked,

1.595

Beef, top loin petite roast, boneless, separable lean only, trimmed to 1/8" fat, select, cooked, roasted

1.586

Milk, dry, nonfat, instant, without added vitamin A and vitamin D

1.584

Milk, dry, nonfat, instant, with added vitamin A and vitamin D

1.584

Veal, leg (top round), separable lean and fat, cooked, braised

1.580

Beef, ribeye petite roast, boneless, separable lean only, trimmed to 0" fat, select, cooked, roasted

1.580

Foods High in Threonine

Threonine (g)

Beef, loin, top sirloin cap steak, boneless, separable lean only, trimmed to 1/8" fat, select, cooked,

1.579

Beef, round, top round, separable lean only, trimmed to 0" fat, select, cooked, braised

1.578

Beef, round, top round, separable lean only, trimmed to 0" fat, choice, cooked, braised

1.578

Beef, loin, top sirloin filet, boneless, separable lean only, trimmed to 0" fat, all grades, cooked, grilled

1.571

Veal, shoulder, arm, separable lean only, cooked, braised

1.561

Beef, rib eye steak, bone-in, lip-on, separable lean only, trimmed to 1/8" fat, select, cooked, grilled

1.557

Beef, round, top round, separable lean and fat, trimmed to 0" fat, choice, cooked, braised

1.556

Beef, round, top round, separable lean and fat, trimmed to 0" fat, select, cooked, braised

1.556

Milk, buttermilk, dried

1.548

Beef, ribeye filet, boneless, separable lean only, trimmed to 0" fat, select, cooked, grilled

1.542

Beef, plate steak, boneless, inside skirt, separable lean only, trimmed to 0" fat, all grades, cooked,

1.541

Game meat, bison, chuck, shoulder clod, separable lean only, 3-5 lb roast, cooked, braised

1.533

Cheese, parmesan, shredded

1.531

Soybeans, mature seeds, roasted, no salt added

1.530

Soybeans, mature seeds, roasted, salted

1.530

Fish, salmon, red, (sockeye), canned, smoked (Alaska Native)

1.530

Veal, cubed for stew (leg and shoulder), separable lean only, cooked, braised

1.527

Lamb, domestic, shoulder, arm, separable lean only, trimmed to 1/4" fat, choice, cooked, braised

1.521

Cheese, parmesan, dry grated, reduced fat

1.519

Beef, chuck, mock tender steak, boneless, separable lean only, trimmed to 0" fat, choice, cooked,

1.519

Seeds, cottonseed flour, partially defatted (glandless)

1.515

Pork, cured, bacon, cooked, microwaved

1.512

Soy flour, full-fat, roasted, crude protein basis (N x 6.25)

1.511

Soy flour, full-fat, roasted

1.511

Beef, round, top round, separable lean and fat, trimmed to 1/8" fat, select, cooked, braised

1.511

Beef, chuck, mock tender steak, boneless, separable lean only, trimmed to 0" fat, all grades, cooked,

1.508

braised

Beef, top loin filet, boneless, separable lean only, trimmed to 1/8" fat, all grades, cooked, grilled

1.507

Beef, rib eye roast, bone-in, lip-on, separable lean only, trimmed to 1/8" fat, select, cooked, roasted

1.505

Veal, rib, separable lean only, cooked, braised

1.504

Pork, cured, bacon, cooked, broiled, pan-fried or roasted

1.501

Foods High in Threonine

Threonine (g)

Pork, cured, bacon, cooked, pan-fried

1.501

Beef, round, top round, separable lean and fat, trimmed to 1/8" fat, all grades, cooked, braised

1.500

Soy flour, full-fat, raw

1.500

Soy flour, full-fat, raw, crude protein basis (N x 6.25)

1.500

Beef, loin, top sirloin petite roast, boneless, separable lean only, trimmed to 0" fat, all grades,

1.496

cooked, roasted

Beef, loin, top sirloin filet, boneless, separable lean only, trimmed to 0" fat, choice, cooked, grilled

1.495

Beef, chuck, mock tender steak, boneless, separable lean only, trimmed to 0" fat, select, cooked,

1.493

Beef, round, top round, separable lean and fat, trimmed to 1/8" fat, choice, cooked, braised

1.489

Veal, sirloin, separable lean only, cooked, braised

1.483

Beef, ribeye filet, boneless, separable lean only, trimmed to 0" fat, all grades, cooked, grilled

1.478

Game meat, rabbit, wild, cooked, stewed

1.477

Gelatins, dry powder, unsweetened

1.475

Chorizo, pork and beef

1.473

Beef, shank crosscuts, separable lean only, trimmed to 1/4" fat, choice, cooked, simmered

1.471

Veal, shoulder, whole (arm and blade), separable lean only, cooked, braised

1.471

Beef, chuck for stew, separable lean and fat, choice, cooked, braised

1.471

Veal, shoulder, arm, separable lean and fat, cooked, braised

1.469

Chicken, broilers or fryers, giblets, cooked, fried

1.467

Beef, chuck for stew, separable lean and fat, all grades, cooked, braised

1.467

Veal, loin, separable lean only, cooked, braised

1.466

Beef, chuck for stew, separable lean and fat, select, cooked, braised

1.462

Lamb, Australian, imported, fresh, shoulder, arm, separable lean only, trimmed to 1/8" fat, cooked,

1.460

braised

Lamb, New Zealand, imported, frozen, shoulder, whole (arm and blade), separable lean only, cooked,

1.458

braised

Beef, rib, back ribs, bone-in, separable lean only, trimmed to 0" fat, all grades, cooked, braised

1.457

Beef, top loin petite roast, boneless, separable lean only, trimmed to 1/8" fat, all grades, cooked,

1.456

Cheese, parmesan, grated

1.455

Beef, chuck eye Country-Style ribs, boneless, separable lean only, trimmed to 0" fat, select, cooked,

1.454

braised

Ground turkey, fat free, pan-broiled crumbles

1.452

Beef, plate steak, boneless, inside skirt, separable lean only, trimmed to 0" fat, choice, cooked, grilled

1.452