Boron-containing starches

The Fermentation Process The process by which this antifungal substance is produced is an aerobic fermentation of an aquaous nutrient medium inoculated with a pimaricin-producing strain of Streptomycesgihrosporeus. The nutrient medium contains an assimilable source of carbon such as starch, molasses, or glycerol, an assimilable source of nitrogen such as corn steep liquor and Inorganic cations such as potassium, sodium or calcium, and anions such as sulfate, phosphate or chloride. Trace elements such as boron, molybdenum or copper are supplied as needed in the form of impurities by the other constituents of the medium. 

Tsuchiya et al utilized well-known iodo-starch reaction for sensing poly" hydroxy compounds. To realize that, amylose was modified with boronic acid moieties (Scheme 1.13). An aqueous solution containing the boronic acid-modified amylose and iodine (mixture of I2 andKI) is colored bluish purple due to encapsulation of iodine within the helical cavity of amylose. With increasing... 

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