Staling of cake samples during storage
Changes in staling of cake samples were followed during 21 days of storage and the results are shown in Table 8. The staling values of different cake samples were reduced gradually during storage. The lower reduction in these values (high freshness) was achieved in cake containing substituted flour with different levels of watermelon rind powder and control cake sample. Results showed that substituting of 2.5% and 5% flour by watermelon rinds recorded the highest values staling being 320.86% and 327.77%, respectively, followed by substituting with 7.5% sharlyn melon peel powder (316.62%) after 21 days of storage compared to control sample (286.56%).