I recently read an excellent post by Jane Peyton about early human alcohol consumption and was intrigued by a brief reference to one of its advantages being the drink often containing L. acidophilus or LABs ( lactic acid bacilli - there are several different species) ).
As a cider making doctor I thought I would elaborate given pre-biotics are all the rage at present. Fermented cereal drinks have been recorded back to 6000BC and there is indirect evidence of fermented fruits in the diet earlier, some of which have been found to contain L. acidophilus. Evidence has been found on pottery. Not all alcoholic drinks contain LABs. Many wine and cider makers try and keep them out. The exception is Spanish Sidra with its distinctive acetic favour.
Lactobacillus acidophilus in early human diets offers several crucial survival advantages.
Early humans scavenged and ate raw or intermittently stored meat which were frequently contaminated with pathogenic bacteria like E. coli or Salmonella. As well as meat hunter-gatherers also relied on fibrous, difficult-to-digest roots and seeds. L. acidophilus produces enzymes that broke down complex carbohydrates and tough proteins, increasing the extraction of essential calories, amino acids, and minerals (like calcium and iron). Obtaining enough calories and protein from uncooked food was difficult.
L. acidophilus binds to intestinal walls, denying space and nutrients to these harmful microbes. Also these bacteria promoted the production of protective mucus and strengthening proteins in the gut lining, preventing systemic infections from breaking through the intestinal wall.
By fermenting sugars into lactic acid, L. acidophilus lowers the gastrointestinal and food pH, creating a hostile environment for putrefactive and disease-causing bacteria.
Early humans faced constant exposure to environmental toxins and parasites.
Lactobacillus strains interacted heavily with early lymphoid tissues in the gut, stimulating macrophage function and regulating the inflammatory response.
Early human diets contained varying levels of natural toxins and mutagenic compounds found in raw vegetation. L. acidophilus produces specific enzymes capable of inhibiting the conversion of pre-carcinogens into active carcinogens within the gut lumen. #LactobacillusAcidophus #alcohol