Is Watermelon Acidic or Alkaline in pH?

Every food has a certain amount of acidic and alkaline in its solution. Watermelons are high in minerals and vitamins, particularly vitamin C, which are beneficial to our health in a variety of ways. Many acidic meals can be both detrimental and beneficial to our health.

Many people are naturally curious about the pH of watermelon and whether it is acidic or alkaline.

When completely mature, watermelons have a pH range of 5 to 6 and 9 and are one of the least acidic foods. They have an alkaline-forming impact on their solution as they ripen since they contain roughly 90% water in their bodies. Watermelons are thought to have various health benefits, including calming our hearts and hydrating our bodies.

But that’s not all there is to know about the roles acid and alkaline play in our everyday diet. There’s a lot more to watermelons and their pH levels than meets the eye.

What Causes Watermelons to Be Alkaline?

We eat watermelons, which are one of the most alkaline fruits.

When completely mature, the pH of a watermelon can reach dangerously high levels. A pH of more over 7 is already considered alkaline. The US Meal and Drug Administration, on the other hand, deems any food with a pH more than 4.6 to be alkaline.

Watermelons are incredibly alkaline in the world of fruits, regardless of the scale you use.

How acidic is watermelon?

When compared to other foods, watermelon has the lowest acid content and a medium to high alkaline pH. A completely ripe watermelon with a pH of 9 is considered a high alkaline food. It has a pH scale that ranges from 5.18 to 5.60 on average. As a result, it is a low-acid meal.

We all remember from chemistry class that the pH scale ranges from 0 to 14. But, what exactly is the pH scale’s concept?

Any food or substance with a pH less than seven is considered acidic. Anything with a pH more than seven is said to as alkaline. A food is deemed neutral if it contains a solid seven.

The Alkaline and Acid pH Scales

When we examine the ratio of the pH scale’s odd digits, we can observe that these odd numbers actually represent their acidity variance.

Every number has a tenfold increase. The lower the digits, the more acidic the blood becomes. The lower the digits, on the other hand, the lower the acid content of a dish.

The acidity of a food with a pH of 5 is ten times that of a food with a pH of 6. It’s also a hundred times more acidic than level 7, and the number keeps rising in lockstep with the trend.

Watermelons have a little amount of citric acid compared to other foods because their pH is over 5.

What’s the Difference Between Acid and Alkaline?

On a pH scale, the presence of alkaline and acid in a food item is critical. But, more crucially, it determines the proportions of water present.

Despite the fact that each of these components are solutions, their look, taste, and characteristics can differ.

• Alkaline – As previously stated, any food with a pH greater than 7 is alkaline and contains hydroxide in its solution.

When you contact alkaline foods, they will likely taste harsh and feel slippery. Other acids can be used to neutralise them.

• Acid – An acid, on the other hand, is the polar opposite of an alkaline. It, for example, has a pH of less than 7 and contains hydrogen ions in its solution.

An acidic solution will taste sour and appear more sticky than an alkaline solution (depending on the acid).

Lemons, for example, have a sour flavour and their juice is sticky rather than slick. Additionally, they have a low pH, making them acidic meals with the most hydrogen in their solution.

As a result, watermelons with a pH greater than 5 have the least hydrogen in their solution. When a watermelon is fully ripe, it comprises 90% of its weight in water and has a low acid content.

Its solution is slick and watery, rendering it fully alkaline at a pH of solid 9.0.

Why Should You Eat Watermelon, an Alkaline Fruit?

Alkaline foods and products have gained popularity in recent years, as well as excellent outcomes. Alkalizing foods, such as legumes, vegetables, and nuts, include a wide range of fruits, legumes, vegetables, and nuts, all of which are beneficial to human health.

When watermelons are fully ripe, they’re at their most alkaline. So, certainly, an alkaline-forming watermelon is a healthy addition to our regular diet.

Many scientists believe that alkaline-forming foods protect the body from acidity. It also helps to keep the pH of our blood in check. However, not all alkalizing meals have an effect on blood pH.

Vitamins, antioxidants, fibre, and minerals included in many alkalizing fruits have an impact on our bodies and health. Without a doubt, watermelons are alkaline foods, and as a result, they are excellent to our diet and health.

All things considered, it’s always a good idea to check with your doctor before making any dietary adjustments. These 8 alkaline foods can also be included in your everyday diet for their health benefits.

Aside from the alkalinity, watermelons are essentially water. Keeping luscious slices of watermelon in the fridge could be a wonderful alternative for folks who can’t seem to convince themselves to drink the recommended 8 glasses of water every day.

How Does Watermelon’s Alkaline Help Us?

Watermelon Seeds Have 12 Amazing Health Benefits – PharmEasy Blog

Watermelons are strong in nutrients such as minerals and vitamins, making them a very healthful fruit. Watermelon’s red colour is due to the presence of lycopene and vitamin C in its solution and body.

It works as an antioxidant to boost our physical and mental health, as well as our immune system.

Consider using watermelons in our daily diet to increase our chances of a healthy future. Not only does watermelon have a pleasant and sweet taste, but each mouthful is also packed with nutrients.

We’ve compiled a list of some of the numerous health benefits that frequent consumption of watermelons can provide. Let’s take a closer look:

  1. Our Heart’s Best Friend

If you enjoy eating watermelons, you’re in luck because they’re thought to reduce your risk of heart disease. The lycopene in the fruit helps to manage and decrease blood pressure and cholesterol levels.

Watermelons are low-acid fruits, but their solution contains some acids, notably amino acids. Watermelons include amino acid, or citrulline, which reduces blood pressure by increasing nitric acid levels and increasing blood flow.

  1. Give You a Younger Appearance

Watermelon should be part of your regular diet if you care about your skin and hair. Watermelons are one of the fruits that include vitamins A and C, which aid in hair and skin health.

It increases collagen and protein production, making you look younger and more energetic.

  1. Keeps Our Bodies Hydrated

Body hydration is essential at all times, but especially during the summer or hot weather. If you’re concerned about your health, eat a bite of watermelon whenever possible to stay hydrated.

Watermelons have roughly 92% of the water that our bodies need to stay hydrated. It enables our organs to function properly. In addition, throughout the hot summer months, it keeps you cool and rejuvenated.

  1. Helps with digestion

Watermelons are primarily composed of water, with some fibres tossed in for good measure. The fibres in the fruit help to speed up digestion and improve stool quality.

The fruit’s water aids in the improvement of our bowel motions. Watermelons are one of the most important things to eat if you’re having stomach problems. All of these factors help to improve your digestion.

Salt reduces the acidity of watermelon.

If you’ve ever tried watermelon with a pinch of salt, you’ll understand how much sweeter it becomes. The melon’s tartness is substantially reduced, and it becomes quite sweet. But why is it the case?

Salt, on the other hand, increases the sensitivity of particular tastes, such as sweet and umami. However, it diminishes sensitivity to other flavours such as bitter and sour. As a result, the salted melon has a less acidic flavour.

But keep in mind that salt does not actually lower the acidity of watermelon. It simply changes our sensitivity to it.


To summarise, watermelons provide a lot of nutritious value to a healthy diet and should be included in everyone’s daily diet. Despite the fact that the fruit contains up to 92 percent water, its pH of 5.2 to 5.8 makes it a low acidic food.

We hope you learned the pH of watermelon if you read the entire essay. Thank you for taking the time to visit!

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Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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