We distinguish between saliva-amylase and pancreas-amylase. Saliva amylase or α amylase is produced by the mouthsalivary glands.
The pancreas produces pancreatic amylase, which is more important than saliva amylase. The release of pancreatic amylase occurs mainly through hormonal stimulation (cholecystokinin).
https://de.wikipedia.org/wiki/Speichel-Amylase (Wikipedia CC-by-sa-3.0)
https://de.wikipedia.org/wiki/Amylasen (Wikipedia CC-by-sa-3.0)