The Science of Coffee — Chapter 8 of 10
Word got out. The science was real. Low acid coffee — genuine low acid coffee — was not just a marketing concept. It was a measurable, peer-reviewed, university-confirmed fact about what traditional roasting does to the chemistry of the cup. And it mattered to a lot of people.
Millions of Americans had been quietly suffering through coffee they wanted to drink but couldn't. Acid reflux. Stomach pain. GERD. Gut sensitivity. They had been told to give up coffee, or to live with the discomfort, or to water it down and mask it with milk and sugar until it was barely recognizable. The idea that a coffee existed that was genuinely easy on the stomach — proven by science, not just marketing — was meaningful to them.
And the coffee industry noticed. Not with curiosity about the science. With a calculator.
There was no FDA standard for low acid coffee. No independent certification requirement. No regulated threshold for what the phrase actually meant. Anyone could print the words “low acid” on a bag of coffee and sell it. No laboratory. No peer review. No pH measurement required.
The consumer demand was real. The verification requirement was zero. For brands looking to capitalize on a growing health trend without doing the underlying work, the math was obvious.
One by one, brands began appearing on shelves with low acid claims. Some were existing brands that quietly added the phrase to packaging they had never changed. Some were new brands launched specifically to capture the market. None of them had changed their roasting process. None of them had submitted to independent testing. They had simply adopted a label that consumers trusted — and that nobody was verifying.
The Scale of the Problem
6 out of 7
Coffees marketed as “low acid” were actually high acid — no different from standard commercial coffee. Confirmed by NC A&T University (2024).
In 2024, researchers at North Carolina A&T University — led by Dr. Ibrahim — conducted an independent study of coffees being sold in the American market as low acid. They selected seven brands that actively and explicitly marketed themselves with low acid claims. They tested each one using rigorous, independent laboratory methodology.
The results were stark. Six of the seven brands measured at pH levels statistically indistinguishable from standard commercial coffee — roughly pH 4.8 to 5.2. The same acidity range as every other industrial coffee on the market. Brands that had been sold to acid-sensitive consumers, to people with acid reflux and GERD, as a solution to the very problem they were supposed to solve — had not changed the chemistry at all.
Only one brand passed. The one that had built its entire existence around actually solving the problem, not just labeling it. The one that had been doing this since 1994, with peer-reviewed science and patented technology behind every bag.
This is not a story about brand competition. It is a story about people who were deceived by a label they trusted because they had no other way to verify it.
The people buying low acid coffee are not casual coffee drinkers experimenting with a trend. They are people with real medical situations — acid reflux, GERD, IBS, ulcers, post-surgery dietary restrictions — who were told or discovered that reducing the acid in their coffee made a genuine difference to their daily comfort. They sought out low acid coffee as a health decision. And most of what they were sold was indistinguishable from the coffee that had been harming them in the first place.
The response to the Wild West was the creation of a real standard. The Low Acid Coffee Certification Standard Authority — LACCSA — was established to give the low acid label actual meaning. To require independent laboratory verification. To ensure that when a consumer sees the claim, it reflects a measurable, reproducible, independently confirmed pH threshold.
Puroast is LACCSA certified. It is the only major coffee brand to have earned and maintained that certification — because it is the only brand whose process genuinely produces the result the label claims.
The Wild West of low acid coffee is not over. Fake claims still exist on shelves. But the standard exists now. The test has been run. And the result is documented, published, and on the record.
The science was out there. The industry had been exposed. What Puroast needed next was legal protection for the process that no one else could honestly replicate anyway.
Chapter 9 — The Patent That Changed Everything
Sources
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Puroast Coffee is not a drug or medical treatment. If you have a medical condition, consult a qualified healthcare professional before making changes to your diet.
