Data were analyzed statistically on SPSS-16.0 software packages(SPSS Inc. Chicago, IL, USA) as per standard methods.
Duplicate samples were drawn for each parameter, and the experiments were repeated three times to provide six replicates(n06). The instrumental colour evaluationwas carried out with four samples and was repeated three times, leading to total 12observations (n=12). Visual colour and odour evaluation was performed by a seven-member panel in each trial leading to 21observations (n=21). Means between the periods of storage,between treatments and within treatments were compared by two-way analysis of variance and critical difference test. The statistical significance was estimated at 5% level (P