Comparing E270 - Lactic acid vs E515II - Potassium hydrogen sulphate

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Overview

E270 - Lactic acid

Lactic acid (E270) is a sour-tasting organic acid used to control acidity, add tangy flavor, and help keep foods stable. It occurs naturally in fermented foods and is also made at industrial scale, mainly by fermenting plant sugars. It appears on labels as lactic acid or E270.

E515II - Potassium hydrogen sulphate

Potassium hydrogen sulphate (E515II) is a food-grade acid salt used to control acidity in foods and drinks. Also called potassium bisulphate, it adjusts pH, which helps with taste, texture, and shelf stability when used in small, approved amounts. It is authorized as a food additive in the European Union.

Synonyms

E270

Lactic acid

milk acid

2-Hydroxypropanoic acid

E515ii

Potassium hydrogen sulphate

Potassium bisulphate

Functions

acidity regulator preservative

acidity regulator

Origins

Products

Found in 18,751 products

Found in 0 products

Search rank & volume

#2094.4K / mo🇺🇸U.S.

#50930 / mo🇺🇸U.S.

Awareness score

×0.74

under-aware

Awareness data is not available.

Search volume over time

Interest over time for 4 keywords in U.S. during the last 10 years.

Search history data is not available.

Popular questions

Does milk help acid reflux?
Milk can briefly buffer stomach acid, but its fat and protein may stimulate acid production later, so effects vary by person; fermented dairy contains lactic acid (E270), whose acidity helps tartness and may help or bother individuals depending on sensitivity.
How to drain lactic acid from legs?
You don’t need to “drain” it—exercise-produced lactate (the same molecule as food additive E270 in ion form) is naturally cleared or reused for energy within about an hour. Muscle soreness after workouts is from microdamage, not trapped lactic acid; light movement and time help.
What does lactic acid do?
In foods, E270 is an acidity regulator and flavoring that lowers pH to add a tangy taste and stabilize products. It also inhibits spoilage microbes and is used to reduce pathogens on meats and in fermented foods, beverages, and pickles.
What does lactic acid do for skin?
As an alpha‑hydroxy acid, lactic acid gently exfoliates and increases skin hydration, helping smooth texture and brighten dullness. At higher strengths or low pH it can irritate sensitive skin.
How to get rid of lactic acid?
Your body naturally clears exercise-produced lactate quickly, so there’s no need to “flush” it. Staying hydrated and doing light activity can support normal clearance; lactic acid in foods (E270) doesn’t cause muscle lactate buildup.