This invention discloses a method for inhibiting the oxidation and discoloration of watermelon-flavored
nicotine bags, addressing the technical challenge of easy oxidation and discoloration of unsaturated aldehydes, such as melon
aldehyde, and
aroma deterioration under conditions of
high humidity, high pH, and coexistence of
metal ions. The method involves dissolving
butylated hydroxytoluene (BHT) in watermelon flavoring to prepare watermelon flavoring microcapsules, which are then compounded with
citric acid. The core material of the
nicotine bag is used as the core material to prepare core material microcapsules. The watermelon flavoring microcapsules containing the composite
antioxidant, the core material microcapsules,
plant fiber fillers, and other auxiliary additives are mixed evenly, filled into a breathable bag, and sealed to obtain the finished product. This invention effectively inhibits the oxidation and discoloration of watermelon flavoring through the synergistic
antioxidant effect of BHT and
citric acid, combined with the physical isolation protection of double microcapsules, thus extending the
shelf life of
nicotine bags. Furthermore, the process is simple, compatible with existing production lines, and highly practical.