L-malic acid: Solubility and Benefits

L-malic acid is an essential natural organic acid, widely distributed in plant, animal and microbial cells, and its taste is close to that of natural apple. In 1967, it was registered as a safe, non-toxic, harmless, edible organic acid in the United States Food and Drug Administration. L-malic acid is a tetracharonic acid. All malic acid in nature is L-malic acid.

Solubility 

The high solubility of L-malic acid was confirmed by the test done from 10 °C to 55 °C. At room temperature, it was possible to solubilize 50.11%, or 5.011 g in 10 mL of water, which corresponds to 3.73 mol kg−1 of water, superior to citric acid (around 3.13 mol g−1 of water at same temperature).

Benefits

There are countless different health benefits to using L-malic acid.

L-malic acid is produced by the human body, and it's a key player in the Krebs cycle. This cycle includes the metabolism of carbohydrates, proteins and fatty acids to create adenosine triphosphate, more commonly known as simply ATP. This complex organic chemical provides cellular energy for all living organisms on earth.

As a supplement, L-malic acid is taken to boost athletic performance and discourage post-exercise muscle fatigue. Occasionally it's taken in conjunction with creatine, a highly popular supplement for people looking to increase lean muscle mass.

L-malic acid is an effective skin refiner because it encourages the shedding of the outer layer of skin cells. The shedding it promotes can have anti-aging effects since cell turnover slows as we age. Due to that, it's commonly used for a range of skin concerns, including fine lines and wrinkles, hyperpigmentation, acne, large pores, milia, warts, calluses, and more.

Otherwise, it's also helpful for removing pore-clogging debris that can lead to acne.

Also, this acid can improve symptoms of xerostomia by stimulating saliva production in the mouth. Healthy saliva production also helps prevent the overgrowth of oral bacteria.