There are two main types of bacterial cell walls, those of gram-positive bacteria and those of gram-negative bacteria, which are differentiated by their Gram staining characteristics. For both these types of bacteria, particles of approximately 2 nm can pass through the peptidoglycan.
As such, chelated zinc refers to elemental or atomic zinc attached to another molecule, such as picolinic acid. Once in your body, zinc is important for strong immune response, growth and balancing blood sugars.inc is an essential mineral needed by your body in relatively small amounts, 20 mg or less per day, depending on your body size.
I believe the RDA of 15mg is for elemental zinc. For example, the 50mg zinc amino acid chelate that I have would probably only contain about 10mg of elemental zinc. And that amount is reduced even further when taken with food because of the above-mentioned hindrances. I would love for someone with specific info to chime in on this.