• Home
  • Guides
  • Cornstarch vs Black Beans: How Are They Different?

Cornstarch vs Black Beans: How Are They Different?

This article explains the key similarities and differences between cornstarch and black beans, foods from the grains and legumes food groups. Read on to learn more about the cornstarch vs black beans comparison.
Michael Whaley, Health Writer

Written by Michael Whaley, Health Writer. Updated on February 13, 2023.

Although cornstarch and black beans belong to different food groups, while cornstarch belong is a grain, and black beans belong to legumes food group, and it’s not that common to compare foods from different groups, people are often interested in these comparisons as well.

That’s why we decided to create an in-depth article that compares cornstarch and black beans, their nutritional values, similarities, differences, macronutrients, and micronutrients – vitamins and minerals.

Generally speaking, foods from grains and legume food groups are both high in carbs and protein and valuable addition to a plant-based diet.

Now, let’s see how cornstarch and black beans compare specifically.


Cornstarch (Zea mays) is a type of carbohydrate derived from the endosperm of the corn kernel.

It is a good source of energy, providing a high amount of carbohydrates and small amounts of protein, vitamins, and minerals. It is pure starch and has a very low nutritional value compared to whole-grain cornmeal.

Cornstarch is commonly used as a thickening agent in cooking and baking, as it can absorb liquids and increase the viscosity of sauces, gravies, and puddings. It is also used as a coating for fried foods to provide a crisp texture. It is a gluten-free ingredient and can be used as a thickener for people with gluten sensitivity or celiac disease.

Cornstarch is typically used in small amounts and is not a significant source of nutrition in the diet. It is often used as a thickener in combination with other ingredients, and when consumed in moderation, it can be included as part of a healthy diet.

Cornstarch is not an excellent source of any particular vitamin.

Black Beans

Black beans (Phaseolus vulgaris) are a type of legume that are native to Central and South America.

They are a popular ingredient in many vegan and vegetarian dishes due to their high protein and fiber content and rich, nutty flavor.

Black beans are also a good source of antioxidants. They have been shown to have a number of potential health benefits, including reducing the risk of certain types of cancer and helping to lower cholesterol levels.

They are easy to incorporate into a wide range of recipes and can be enjoyed in dishes such as black bean soup, burritos, and salads.

Black Beans are an excellent source of Vitamin B1 (Thiamine), and Vitamin B9 (Folate).

They also contain a good amount of Vitamin B2 (Riboflavin), Vitamin B3 (Niacin), Vitamin B5 (Pantothenic acid), and Vitamin B6 (Pyroxidine) and some Vitamin K.

Cornstarch vs Black Beans Nutrition

Now that we’ve described the origin, taste, and usage of these foods, we can move to the most interesting part – comparing cornstarch vs black beans.

This comparison will start by comparing the caloric value of cornstarch and black beans and their macronutrients and then go more in-depth by analyzing their vitamin and mineral content.

CornstarchBlack Beans
Energy381 kcal341 kcal
Carbs91.3 g62.4 g
Sugar0 g2.12 g
Fiber0.9 g15.5 g
Protein0.26 g21.6 g
Fat0.05 g1.42 g
Saturated Fat0.009 g0.366 g

Cornstarch vs Black Beans Calories

Most calories in raw grains and legumes come from carbs. Peanuts are an exception here, but they are often considered a nut instead of a legume because of their nutritional profile.

Comparing black beans vs cornstarch for weight loss, black beans are slightly lower in calories, with 341 calories per 100 grams, compared to 381 calories per 100 grams of cornstarch.

However, both cornstarch and black beans can and should be a part of a healthy diet, and neither one shouldn’t be avoided if you’re looking to lose weight.

Cornstarch vs Black Beans Protein

Legumes and most legume products, including cornstarch and black beans, are important sources of plant-based protein.

Black Beans offer around 99% more protein than cornstarch.

Black Beans have 21.6 grams of protein per 100 grams, while cornstarch has 0.3 grams of protein per 100 grams.

Cornstarch vs Black Beans Carbs

Counting carbs can be important for some people for different reasons, including blood sugar control, weight management, or athletic performance.

It’s also important for people on a keto diet, so let’s compare the carbs content in cornstarch and black beans.

The total amount of carbohydrates is around 32% higher in cornstarch than in black beans. It have 91.3 grams per 100 grams, compared to 62.4 grams in black beans.

There’s less sugar in cornstarch than in black beans, 100% precisely.

One handful of cornstarch (28 grams) contains 0 grams of sugar, while the same amount of black beans contains 0.6 grams.

Lastly, let’s take a look at the dietary fiber in cornstarch and black beans.

Dietary fiber keeps the digestive system healthy and helps with weight management by promoting a sense of fullness.

With 4.3 grams of fiber per portion, black beans are a better source of fiber than cornstarch which offer 0.3 grams per portion.

Cornstarch vs Black Beans Fats

Like most other grains and legumes, with the exception of lupins and peanuts, cornstarch and black beans are low in fat.

Fats in cornstarch and black beans are mostly healthy unsaturated fats. They are naturally cholesterol-free and trans-fat-free.

Total fat in cornstarch and black beans:

  • Cornstarch: 0.1 grams per 100 grams
  • Black Beans: 1.4 per 100 grams

Speaking of saturated fats, cornstarch is 100% lower in saturated fats.

Cornstarch and black beans contain 0 grams and 0.4 grams of saturated fat per 100 grams, respectively.

Cornstarch vs Black Beans Vitamins Content

This section will discuss the vitamin content of cornstarch and black beans.

Vitamins are micronutrients, meaning we need only a small amount. However, they are very important for many processes in our bodies.

Cornstarch has a higher amount of vitamin A, vitamin B1 (Thiamine), vitamin B2 (Riboflavin), vitamin B3 (Niacin), vitamin B5 (Pantothenic acid), vitamin B6 (Pyroxidine), vitamin B9 (Folate), vitamin E, and vitamin K.

Cornstarch and black beans contain the same amount of vitamin C, vitamin D, and vitamin B12 (Cobalamin).

The following table shows the exact amount of vitamins cornstarch and black beans contain side by side, so you can easily compare them.

CornstarchBlack Beans
Vitamin A017 IU
Vitamin C00
Vitamin D00
Vitamin B1 (Thiamine)00.9 mg
Vitamin B2 (Riboflavin)00.193 mg
Vitamin B3 (Niacin)01.96 mg
Vitamin B5 (Pantothenic acid)00.899 mg
Vitamin B6 (Pyroxidine)00.286 mg
Vitamin B9 (Folate)0444 µg
Vitamin B12 (Cobalamin)00
Vitamin E00.21 mg
Vitamin K05.6 µg

Cornstarch vs Black Beans Minerals Content

Minerals are important for our body to function properly. We need only a small amount of minerals, so they are called micronutrients.

Some minerals, like iron, calcium, zinc or, iodine, are relatively hard to get on a plant-based diet, so it’s important to choose your foods thoughtfully. This part of the cornstarch and black beans comparison focuses on their mineral content.

Cornstarch is a better source of calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc than black beans.

On the other hand, black beans are a higher amount of sodium.

Cornstarch and black beans contain the same amount of fluoride.

Check out the table below to learn how cornstarch and black beans compare when it comes to mineral content.

CornstarchBlack Beans
Calcium2 mg123 mg
Copper0.05 mg0.841 mg
Iron0.47 mg5.02 mg
Magnesium3 mg171 mg
Manganese0.053 mg1.06 mg
Phosphorus13 mg352 mg
Potassium3 mg1480 mg
Selenium2.8 µg3.2 µg
Sodium9 mg5 mg
Zinc0.06 mg3.65 mg

The Final Word

Cornstarch and black beans are highly nutritious and a great addition to a plant-based diet.

Both cornstarch and black beans are high in specific vitamins and minerals, and including them in your diet will give you the most benefits they offer.

Antioxidants found in grains and legumes can help to protect cells from damage and may reduce the risk of certain diseases and the effects of aging.

Additionally, the fiber and other nutrients in these foods can support the health of the digestive system and may even help to prevent certain digestive cancers.

Legumes and grains are a versatile food that can be incorporated into any meal of the day, including breakfast, lunch, or dinner. They can be served hot or cold, making them a convenient and tasty addition to a variety of dishes.


Holy Peas has strict sourcing guidelines and draws only from high-quality sources, including peer-reviewed studies, academic research institutions, and medical journals, associations and government institutions. Read more about our process.

How we ensure this article is accurate?
  1. It's written and or reviewed by an expert.
  2. We cite relevant studies and trusted sources.
  3. It's regularly updated.

Read more about our process and team.