In this paper, an integrated inventory model for perishable item is
developed from the supplier, manufacturer and buyer’s point of view.
Generally, the value of perishable items is determined by its quality. Demand is
a major factor in supply chain system and it may increase due to consumer’s
preference. In reality, it is seen that demand and production of perishable item
is almost uncertain because at the time of production, there are possibilities of
being imperfect production. So the parameters that are affecting the quantity of
demand and production rate are taken as triangular fuzzy numbers. Three
different methods are used to defuzzify the total profit function. This model has
been accomplished with the different rate of deterioration for raw material and
finished goods. The change in deterioration rate of finished goods leads to
continuous increase in total profit and cycle time, and the change in
deterioration rate for raw material leads to gradual decrease in total profit as
well as cycle time. The setup has been detected numerically to obtain an
optimal solution and also the sensitivity analysis is performed.