clavulanic acid is carried out by fermentation of a streptomycete on a suitable medium comprising various carbon and energy sources like sugars such as glucose fructose sucrose maltose lactose or polysaccharides like starch maltodextrines and inuline or other fructose polymers proteins such as flours from nuts vegetables seeds cereals grasses such as those useful in fermentation industry soybean flour lineseed flour peanut flour potato flour sunflower pea or beanflour cotton seed flour wheat gluten whole wheat rice meal or proteins derived from animal sources called peptones or proteins derived from microbial sources like yeast extracts triglycerides such as soybean oil sunflour oil olive oil tri oleate etc poly alcohols such as ethanol propanol glycerol mannitol or organic acids or a salt thereof such as acetate propionate succinate adipate malonate fumarate citrate lactate gluconate etc and nitrogen sources such as ammonium salts ammonium urea nitrate asparagine aspartate glutamate lysine and from complex sources such as protein products derived from microbial source yeast extract or plants corn steep liquor soybean flour cotton seed flour etc and animals peptones phosphor is either supplied in the form of an inorganic salt or as a phosphor protein like casein or bound to inositol in the form of phytate as present in.