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Home » Recipes » Condiments

Is Soy Sauce Acidic?

shirinMedically Reviewed by Shirin Buta · Written by Rizza Joyce Mira, MD · Updated on August 25, 2023

Originating in Asia, soy sauce is one of the world's oldest seasonings and lends its salty flavor to many regional dishes. Many traditional Asian dishes taste bland without a good splash of soy, but if you suffer from acid reflux or GERD, you're more likely to wonder if it could trigger your symptoms than whether to eat it with sushi or stir-fry.

is soy sauce acidic or alkaline
Table of Contents
  • Is Soy Sauce Acidic or Alkaline?
  • What Is Soy Sauce?
  • What Is the pH of Soy Sauce?
  • Is Cooked Soy Sauce acidic?
  • Is Soy Sauce Bad for Acid Reflux?
  • Can I Eat Soy Sauce Every Day?
  • Does Eating Too Much Soy Sauce Cause Health Issues?
  • Conclusion
  • RELATED QUESTIONS

Is Soy Sauce Acidic or Alkaline?

With a pH of around 5, soy sauce is acidic. This varies between brands, and Kikkoman has a pH of 4.8.

What Is Soy Sauce?

The first records of soy sauce date from around 2,000 years ago in Asia, where it's still widely used today.

There are two types of soy sauce: naturally fermented sauce and sauce made from hydrolyzed vegetable proteins.

RELATED: Is Bread Acidic?

What Is the pH of Soy Sauce?

A pH of 7 is neutral, and anything below that is acidic. With a pH of 5 (4.8 for Kikkoman), soy sauce is acidic.

Soy sauce contains around 1.0% lactic acid and over ten other organic acids, including succinic acid.

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Is Cooked Soy Sauce acidic?

Adding baking soda while cooking can reduce the acidity of food, including when cooking with soy sauce.

Cooking for a shorter time also reduces acidity, as water neutralizes acidity.

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Is Soy Sauce Bad for Acid Reflux?

Different people have different triggers for their acid reflux symptoms. Soy sauce is relatively acidic, so it may trigger heartburn in some.

If you love a good splash of soy, try eating it with high-alkaline foods to reduce the acidity.

RELATED: Is Spinach Acidic?

Can I Eat Soy Sauce Every Day?

If it doesn't trigger your acid reflux and you don't have known kidney problems, eating a couple of tablespoons a day won't do you any harm.

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Does Eating Too Much Soy Sauce Cause Health Issues?

Chemically produced soy sauce contains a toxic substance called 3-MCPD, and soy sauces have been recalled for exceeding safe levels.

Soy sauce is high in sodium, which can increase blood pressure.

It can also be high in MSG and contain significant amounts of amines, including histamine and tyramine. Too much histamine can cause headaches, dizziness, itching, and rashes.

It also contains gluten, so those with celiac disease should avoid it.

RELATED: Are Bananas Acidic?

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Conclusion

If you suffer from acid reflux, soy sauce may trigger your symptoms. Naturally brewed soy is less likely to do so and has more health benefits than chemically produced soy.

  • How To Reduce the Acidity in Juices

RELATED QUESTIONS

What goes well with soy sauce?

Soy sauce is good for glazing roasted or pan-fried meat, fish, and vegetables and is fantastic for seasoning rice and noodles.
Light soy sauce is usually used for dipping, dark for fried noodles, greens, and pork, and sweet for rice and noodles.

What are good substitutes for soy sauce?

Tamari and Worcestershire sauces are good alternatives. There's also Miso paste, fish sauce, and coconut with umami flavor.

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shirin

Shirin is a registered Medical Laboratory Scientist who teaches Immunology and Serology subjects. In her free time, she writes health-related articles to help advocate the prevention of lifestyle and infectious diseases. When not teaching or writing, she loves to try new food and attempts to recreate them at home.

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