Foods Highest in Cystine

4,811 foods ranked by Cystine per 100 g.

These are the foods highest in Cystine, ranked by the amount per 100 g of the edible portion. Cystine is formed from two cysteine molecules joined by a sulfur "disulfide" bond. Those bonds give structure to keratin in hair, skin and nails, and cysteine is a key ingredient in glutathione, the body's main antioxidant. It is considered conditionally essential.

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Values per 100 g.

Food	Cystine
Egg, white, dried	2.10 g
Egg, white, dried, powder, glucose reduced	2.04 g
Egg, white, dried, flakes, glucose reduced	1.91 g
Seeds, cottonseed flour, low fat (glandless)	1.31 g
Seeds, cottonseed meal, partially defatted (glandless)	1.29 g
Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, SUPRO	1.15 g
Egg, whole, dried, stabilized, glucose reduced	1.15 g
Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, ProPlus	1.10 g
Egg, whole, dried	1.10 g
Seeds, cottonseed flour, partially defatted (glandless)	1.07 g
Soy protein isolate, potassium type, crude protein basis	1.05 g
Soy protein isolate	1.05 g
Soy protein isolate, potassium type	1.05 g
Seeds, sesame flour, low-fat	1.01 g
Seeds, sunflower seed flour, partially defatted	0.95 g
Soy protein concentrate, produced by alcohol extraction	0.89 g
Soy protein concentrate, produced by acid wash	0.89 g
Soy protein concentrate, crude protein basis (N x 6.25), produced by acid wash	0.89 g
Seeds, cottonseed kernels, roasted (glandless)	0.86 g
Seeds, sesame flour, partially defatted	0.81 g
Soy flour, defatted	0.76 g
Soy flour, defatted, crude protein basis (N x 6.25)	0.76 g
Soy flour, low-fat, crude protein basis (N x 6.25)	0.75 g
Beef, variety meats and by-products, spleen, cooked, braised	0.73 g
Soy meal, defatted, raw	0.72 g
Soy meal, defatted, raw, crude protein basis (N x 6.25)	0.72 g
Seeds, safflower seed meal, partially defatted	0.69 g
Spices, mustard seed, ground	0.68 g
Fish, cod, Atlantic, dried and salted	0.67 g
Peanut flour, defatted	0.67 g

Meat, eggs, dairy, poultry, whole grains, and alliums like garlic and onion. Amounts are per 100 g of the edible portion; your serving may differ.

Cystine — frequently asked questions

What foods are highest in Cystine?

Per 100 g, some of the richest sources are Egg, white, dried, Egg, white, dried, powder, glucose reduced, Egg, white, dried, flakes, glucose reduced, Seeds, cottonseed flour, low fat (glandless) and Seeds, cottonseed meal, partially defatted (glandless). See the full ranking above.

How much Cystine do I need a day?

There is no separate Daily Value; the WHO requirement combines methionine and cysteine at about 15 mg per kg of body weight per day.

What does Cystine do?

Cystine is formed from two cysteine molecules joined by a sulfur "disulfide" bond. Those bonds give structure to keratin in hair, skin and nails, and cysteine is a key ingredient in glutathione, the body's main antioxidant. It is considered conditionally essential.

Foods Highest in Cystine

Cystine — frequently asked questions

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