CLASSIFIED as strongly acidic and can attack the SKIN over a wide composition range.Hydrochloric acid was discovered by the alchemist Jabir IBN Hayyan AROUND the year 800 AD. Some common Digestive Enzymes and Juices-Digestive juices and EnzymesSubstance DigestedSaliva-AmylaseStarchGastric Juices-Pepsin and Hydrochloric Acid(HCl)ProteinsPancreatic Juices-TrypsinLipasesAmylaseProteinsFats emulsified by bileStarchIntestinal enzymes-PeptidasesSucraseLactaseMaltasePeptidesSucrose (sugar)Lactose (milk sugar)MaltoseBile from the liver-Bile saltsFats globules