Determine the Modification of native starch

Modification of native starch can be either physical or chemical. Chemical modification includes reaction of starch with  acid or alkali and is called  acid modified starch and oxidized starch, respectively. Hydrolysis was a commonly used method of modification since long time and vinegar as well as amylolytic enzymes were used for this treatment. 

Starch modification can also be induced  by modifying the processes of starch biosynthesis by targeting and manipulating specific enzymes using transgenic technologies, thus leading to the production of novel materials with dedicated commercial applications.