Answer:
Dear
Ulrich,
All of the glucosamine
forms are originated from shellfish and are extracted from shellfish.
Chrondroitin is
derived from animal cartilage.
Glucosamine (C6H13NO5)
is an amino sugar and a prominent precursor in the biochemical synthesis
of glycosylated proteins and lipids
There is a patented
process for generating glucosamine from plants wherein fresh plant
materials, or re-hydrated dried plant materials or plant extracts,
are heated at a temperature comprised between 70 and 110° C. for
more than hours, characterized in that a fertilizer acting as glucosamine
precursor is added during the cultivation of the plants, before the
harvest.
Glucosamine Sulfate
is an amino sugar derived from the chitin of shellfish.
Chitin is a polysaccharide
composed of N-acetyl-D-glucosamine units.
