Mary Kom, who competed in the 48kg category, had defeated Alice Kate Aparri of Philippines 8-1 in semifinal to assure herself of at least a silver in the sixth edition of the competition.
The former Khel Ratna awardee from Manipur thus remained the only boxer to have won a medal in each edition of the World Championship.
Duta had defeated Kazakhstan's Nazgul Boranbayeva 10-5 in the semifinal.