1) Saliva – the secret of the salivary glands – is 98% water and creates a slightly alkaline moist environment in the oral cavity. Saliva moistens and disinfects food. In the saliva of mammals there is a natural antibiotic – lysozyme, which kills bacteria.
2) In saliva there are enzymes – amylase and maltase, which in a weakly alkaline medium break down carbohydrate starch into glucose.
3) Saliva contains a substance called mucin, which sticks food together into a food lump.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.