Effect of Salt on the Sensory and Keeping Quality of Orange Fleshed Sweetpotato Crisps

Gaston Ampek Tumuhimbise, Joanita Orishaba, Abel Atukwase, Agnes Namutebi

Department of Product Deve- lopment, Uganda Industrial Research Institute, Kampala, Uganda.
School of Food Technology, Nutrition and Bioengineering, Makerere University, Kampala, Uganda.

DOI: 10.4236/fns.2013.44058                

Abstract

The study was carried out to determine the effect of salt on the sensory, nutritive and keeping quality of OFSP crisps. Crisps were made by deep frying slices of approximately 3.5 mm thickness treated with, 2% and 4% table salt. A control with no salt treatment was prepared alongside the treated ones. Two varieties of OFSP; Ejumula and Kakamega were used in the study. After deep frying, the crisps were cooled to room temperature, packed in paper-lined high density polythene pouches and stored in a dark cupboard at room temperature for three months. During the storage period, the crisps were analyzed for proteins, fat and carotenoid content. Changes in sensory attributes were analyzed using a semi-trained panel. Results indicated that freshly prepared crisps treated with 2% salt had the highest acceptability mean scores for all attributes while there was no significant difference (p > 0.05) between crisps made from either Ejumula or Kakamega variety. Carotenoid content decreased with increase in salt concentration in both OFSP varieties. Shelf-life studies showed that the decline in sensory attributes started after 2 months of storage. The study shows that OFSP crisps treated with 2% salt are more acceptable and reasonably stable during storage.

Keywords

Salt; Orange Fleshed Sweetpotatoes; β-Carotene; Crisps; Sensory Evaluation

Conflicts of Interest

The authors declare no conflicts of interest.

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