Morphological characterisation and glycaemic responses of cake developed from carrot and concentrated Nypa fruticans sap

Y. Y. Tai; T. A. Tengku Ismail; W. I. Wan Rosli

Morphological characterisation and glycaemic responses of cake developed from carrot and concentrated Nypa fruticans sap

2021

Y. Y. Tai | T. A. Tengku Ismail | W. I. Wan Rosli

Glycaemic index is the classification of carbohydrate foods based on their blood glucose responses. In the market, most bakery products contain a high amount of sugar and could directly increase the glycaemic index of the food. Using carrot cake as a bakery product model, the sugar in the cake was replaced with sap produced by Nypa fruticans palm. After undergoing dehydration at 62oC to preserve the palm sap, it was directly incorporated into carrot cakes to replace the table sugar at 0% (control) and 20% level. Both the products were then analysed using scanning electron microscopy to observe their microscopic characteristics. The findings suggested that there was a denser, more compact and lesser number of air cells structure in the carrot cake incorporated with 20% concentrated N. fruticans sap compared to the cake without the addition of concentrated N. fruticans sap. The carrot cake incorporated with 20% concentrated N. fruticans sap was found to have a glycaemic index value of 50 which was significantly lower than the control carrot cake with a glycaemic index value of 55. Although the incorporation of concentrated N. fruticans sap did not lower the postprandial peak glucose responses of carrot cake, it helped in lowering the glycaemic index value of carrot cake.

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