Doc:Bioactives

Bioactive Metabolites

Table 1 Approximate number of known natural products^[1]
Source	All known compounds	“Bioactives”	Antibiotics
Natural Products	over one million	200000 to 250000	25000 to 30000
Plant Kingdom	600000 to 700000	150000 to 200000	ca. 25000
Microbes	over 50000	22000 to 23000	ca. 17000
Algae, Lichens	3000 to 5000	1500 to 2000	ca. 1000
Higher Plants	500000 to 600000	ca. 100000	10000 to 12000
Animal Kingdom	300000 to 400000	50000 to 100000	ca. 5000
Protozoa	several hundreds	100 to 200	ca. 50
Invertebrates:	ca. 100000	?	ca. 500
Marine animals	20000 to 25000	7000 to 8000	3000 to 4000
Insects/worms/etc.	8000 to 10000	800 to 1000	150 to 200
Vertebrates (mammals, fishes, amphibians, etc.)	200000 to 250000	50000 to 70000	ca. 1000

Cite error: <ref> tags exist, but no <references/> tag was found