ISOFLAVONE Content of Foods

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Food NameDaidzeinGenisteinGlyciteinTotal Isoflavones
Cream, sour, cultured0.00.0 0.0
Milk, whole, 3.25% milk fat0.00.0 0.0
Milk, reduced fat, fluid, 2% milk fat, with added vitamin A0.00.00.00.0
Yogurt, plain, whole milk, 8 grams protein per 8 ounce0.00.0 0.0
Egg, whole, raw, fresh0.00.0 0.1
Spices, fenugreek seed0.00.0 0.0
Mustard, prepared, yellow0.00.0 0.0
Infant formula, ABBOTT NUTRITION, SIMILAC, ISOMIL, with iron, ready-to-feed0.71.40.12.2
Infant formula, ABBOTT NUTRITION, SIMILAC, ISOMIL, with iron, powder, not reconstituted6.012.22.725.8
Infant formula, PBM PRODUCTS, ULTRA BRIGHT BEGINNINGS, Soy, ready-to-feed0.81.60.32.6
Infant formula, PBM PRODUCTS, ULTRA BRIGHT BEGINNINGS, soy, liquid concentrate1.02.70.43.8
Infant formula, PBM PRODUCTS, ULTRA BRIGHT BEGINNINGS, Soy, powder5.713.62.128.0
Infant formula, ENFAMIL NEXT STEP, powder, soy formula, not reconstituted7.214.83.025.0
Oil, soybean, salad or cooking0.00.00.00.0
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  • Isoflavone data are calculated per 100g of food weight.
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  • Abbreviations: g = gram, mg = milligram.



Note: The values for total isoflavones may not agree with the simple addition of the mean values of the three individual isoflavones since the mean values represent the aggregation of values from different sources.

What is Isoflavone?

Isoflavones comprise a class of organic compounds, often naturally occurring, related to the isoflavonoids. Many act as phytoestrogens in mammals. Some are termed antioxidants because of their ability to trap singlet oxygen.

Some isoflavones, in particular soy isoflavones, when studied in populations eating soy protein, have indicated that there is a lower incidence of breast cancer and other common cancers because of its role in influencing sex hormone metabolism and biological activity through intracellular enzymes, protein synthesis, growth factor actions, malignant cell proliferations, differentation and angiogenesis. However, the risk reduction in breast cancer from soy isoflavones was only shown in Asian populations.

Although evidence for the beneficial role of isoflavones in breast cancer has become conflicted, results of clinical trials for prostate cancer are encouraging and non-hormonal properties of isoflavones, including cell cycle arrest and cell apoptosis, may reduce the risk of some cancers.

Isoflavones, a subclass of flavonoids, have weak estrogenic, as well as other biological properties that may contribute to the reduction of the risk of some chronic diseases. Soy isoflavones alone and along with soy proteins lower serum total and LDL cholesterol in humans. A review of clinical trials of soy isoflavones suggests some skeletal benefits in younger postmenopausal women.

Since soybeans are a major source of dietary isoflavones and soybeans and soybean products are also a good source of protein, inclusion of soy foods in the diet is recommended.

Foods Rich in Isoflavones



Isoflavones (mg)
Foods High in Isoflavones (100 g)

209.6
Soy meal, defatted, raw

196.0
Soymilk skin or film (Foo jook or yuba), raw

178.8
Soybeans, mature seeds, raw (Korea)

178.1
Soy flour, full-fat, raw

172.5
Soy flour (textured)

165.0
Soy flour, full-fat, roasted

160.0
Soybeans, mature seeds, raw (United States)

155.8
Soybeans, mature seeds, raw (all sources)

150.9
Soy flour, defatted

148.5
Soybeans, mature seeds, dry roasted (includes soy nuts)

131.5
Soybeans, flakes, defatted

130.7
Soybeans, mature seeds, raw (Japan)

128.8
Soybeans, green, mature seeds, raw

120.8
Soybeans, mature seeds, raw (Australia)

118.5
Bacon bits, meatless

118.3
Soybeans, mature seeds, raw (China)

109.5
Instant beverage, soy, powder, not reconstituted

108.1
Soybeans, mature seeds, raw (Taiwan)

103.6
Soybeans, mature seeds, raw (Europe)

99.8
Soybeans, mature seeds, raw (Brazil)

94.6
Soy protein concentrate, aqueous washed

93.9
Cereals ready-to-eat, KELLOGG'S, SMART START Soy Protein

91.1
Soy protein isolate

83.3
Soymilk curd, dried

83.2
Tofu, dried-frozen (koyadofu)

82.3
Natto

81.7
Soy Protein Drink

72.8
Tempeh, fried

69.8
Miso soup mix, dry


Isoflavones (mg)
Foods High in Isoflavones (100 g)

65.1
Soybeans, mature seeds, cooked, boiled, without salt

62.3
Soybeans, flakes, full-fat

60.6
Tempeh

54.2
Soybean chips

52.8
Soybeans, mature seeds, canned

49.0
Soybeans, green, raw (includes edamame)

48.5
Tofu, salted and fermented (fuyu)

44.7
Soymilk skin or film (Foo jook or yuba), cooked

44.4
Soy fiber

41.4
Miso

38.2
Soy paste

35.6
Tempeh, cooked

34.8
Tofu, fried

34.7
Soybean, curd, fermented

34.4
Soybeans, mature seeds, sprouted, raw

33.9
Tofu, pressed (Tau kwa), raw

33.2
Soy yogurt

31.4
Tofu, AZUMAYA, firm, cooked

30.4
Tofu, firm, prepared with calcium sulfate and magnesium chloride (nigari)

30.0
Tofu, MORI-NU, silken, firm

29.2
Tofu, soft, VITASOY-silken

29.0
Tempeh burger

28.0
Infant formula, PBM PRODUCTS, ULTRA BRIGHT BEGINNINGS, Soy, powder

26.9
Formulated bar, Cliff Bar Crunchy Peanut Butter Flavor

26.6
Formulated bar, Balance Yogurt Honey Peanut Flavor

25.8
Infant formula, ABBOTT NUTRITION, SIMILAC, ISOMIL, with iron, powder, not reconstituted

25.7
Soy cheese, unspecified

25.0
Infant formula, ENFAMIL NEXT STEP, powder, soy formula, not reconstituted

22.7
Tofu, raw, regular, prepared with calcium sulfate

22.7
Tofu, AZUMAYA, extra firm, cooked (steamed)

22.6
Tofu, extra firm, prepared with nigari


Isoflavones (mg)
Foods High in Isoflavones (100 g)

22.6
Tofu, soft, prepared with calcium sulfate and magnesium chloride (nigari)

22.1
Tofu, firm, cooked

21.0
Clover, red

18.7
Soy cheese, Monterey Jack, fat-free

18.0
Tofu, silken

18.0
Soy cheese, American

17.9
Soybeans, green, cooked, boiled, drained, without salt (includes edamame)

17.7
Formulated bar, Cliff Luna Nuts Over Chocolate Flavor

17.4
Cereals ready-to-eat, KASHI GOLEAN by Kellogg

16.8
Mayonnaise, made with tofu

16.8
Tofu, firm, braised

16.3
Tofu yogurt

15.9
JACK IN THE BOX, Beef Monster Taco

15.7
Soy lecithin

14.7
Bread, soy and linseed (purchased in Australia)

14.6
Chicken nuggets, meatless, canned, prepared (WORTHINGTON FriChik)

14.3
Sausage, meatless

14.0
Desserts, frozen, Glace Soymilk

13.7
Sufu

13.1
Tofu, smoked

12.5
Soybeans, mature seeds, sprouted, cooked, steamed

12.3
Frankfurter, meatless (purchased in Germany)

12.2
Chicken nuggets, meatless, canned, unprepared (WORTHINGTON FriChik)

11.5
Bar, TIGER'S MILK PROTEIN RICH

11.5
Soy protein concentrate, produced by alcohol extraction

10.7
Soymilk, original and vanilla, fortified or unfortified

10.3
Black bean, sauce

9.9
Sauce, hoisin, ready-to-serve

9.7
Oncom

9.4
Tofu, okara

9.4
Bacon, meatless


Isoflavones (mg)
Foods High in Isoflavones (100 g)

9.1
Pudding, made with soymilk

8.5
Soy noodles, flat

7.9
Soy cheese, Swiss

7.9
Soy drink

7.8
Soymilk, fluid, chocolate, with added calcium, vitamins A and D

6.9
Soy cheese, cheddar

6.5
Oncom, fried

6.4
Soy cheese, parmesan

6.0
Soy cheese, mozzarella

6.0
McDONALD'S, Warm Cinnamon Roll

6.0
Subway, meatball sandwich

5.9
Soymilk, made from soy isolate (purchased in Australia)

5.3
Doughnuts, cake-type, plain (includes unsugared, old-fashioned)

5.1
Formulated bar, POWER BAR, chocolate

4.7
Soymilk, iced

4.6
Sausage patties, meatless (MORNINGSTAR FARMS Veggie Sausage Patties)

4.5
Doughnuts, with added soy flour or soy protein

4.4
Chicken patties, meatless (MORNINGSTAR FARMS Chik Patties Original)

4.3
Ensure, liquid nutrition

3.9
Sausage links, meatless, unprepared (MORNINGSTAR FARMS Veggie Sausage Links)

3.8
Infant formula, PBM PRODUCTS, ULTRA BRIGHT BEGINNINGS, soy, liquid concentrate

3.8
Franks, meatless, canned, prepared (LOMA LINDA Big Franks)

3.8
Sausage links, meatless, prepared (MORNINGSTAR FARMS Veggie Sausage Links)

3.7
Doughnuts, cake-type, plain, chocolate-coated or frosted

3.6
Nuts, pistachio nuts, raw

3.4
Franks, meatless, canned, unprepared (LOMA LINDA Big Franks)

3.3
HORMEL Vegetarian Chili with Beans, canned entree

2.9
Desserts, frozen, Tofutti Nondairy Original Premium

2.7
Sauce mix, Rice-A-Roni, chicken flavor

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