IntroductionThe aroma and sensory responses of a fruit are mainly depend-ent on its maturity . Maturitygrading of fruit during harvesting before delivery to the marketis beneficial for indicating the optimal time for marketing or foroptimisation of storage management Thematurity of a fruit is a qualitative measure which characterises itsmechanical, chemical and rheological properties and is difficult toidentify. Alternately, the maturity of many fruit can be indirectlymeasured using the firmness of the fruit, an index inversely pro-portional to the maturity. Hence firmness can be used as anindicator of maturity in fruit grading and sorting