The Collaborative International Dictionary of English v.0.48:

Valorization \Val`or*i*za"tion\, n. [Pg. valorizac[~a]o.]
   Act or process of attempting to give an arbitrary market
   value or price to a commodity by governmental interference,
   as by maintaining a purchasing fund, making loans to
   producers to enable them to hold their products, etc.; --
   used chiefly of such action by Brazil.
   [Webster 1913 Suppl.]