Chandler and Johnson showed that substantial quantities of limonin could be removed by acetylated paper following earlier work involving cellulose acetate gel beads.
The concept of oder removal using chemical affinity was further developed byBrodie and Visioli who used the reation of aldehydes with amino polymers.The approach of focusing on more specific reactions has been taken a step further by Soares and Hotchkiss who showed that the naringin content of grapefruit juice could be reduced to acceptable levels by using naringinase immobilized within cellulose triacetate film. This increasing use of specific effects highlights the aim of active packaging to achieve a specific effect without necessarily impacting on other proper ties of packaging.