A development of crepe flour by partially substitutional wheat flour with sweet potato

Abstract

This research tilted A Development of Crepe Flour by partially Substitutional Wheat Flour with Sweet Potato aimed to 1) Study a general formula of crepe flour, 2) Study a quantity of sweet potato for partially substituting wheat flour in crepe flour, 3) Understand nutrition facts of crepe flour and 4) Analyze physical qualities in terms of color and viscosity. The experiments were done in a randomized completely blocks design (RCBD) to get data for measuring acceptance in terms of following aspects: color, smell, taste, texture and overall acceptance. Testers were 30 persons lived in Suan Luang District (On Nut), Bangkok and they participated in research by tasting and giving a score in the 9-point hedonic scale. Findings from this research were as follows: 1) The third formula of crepe flour which consisted of 30-gram all purpose flour, 12-gram sugar, 400-gram fresh milk, 150-gram egg and 65-gram whipping cream gained acceptance in every aspect by getting the average score of color, smell, taste, texture and overall acceptance as 7.70, 6.83, 6.97, 7.00 and 7.07 respectively, 2) Regarding to the study of substitution of wheat flour by sweet potato in three levels, namely 40, 50 and 60 prevent of wheat flour, it was found that 50 percent proportion got acceptance in every aspect by getting the average score of color, smell, taste, texture and overall acceptance as 6.83, 6.87, 6.97, 6.87 and 6.77 respectively, As the crepe flour with partial sweet potato substitution is hard, thick and not sweet, which is the unique feature of crepe flour, in order to gain higher consumer acceptance, the crepe flour with partial general formula of crepe flour while providing less energy, carbohydrate and fat than the general formula, 4) Crepe flour with 50 percent substitution of wheat flour by sweet potato had less L* value (lightness) than the general formula albeit higher for a* value (red) and b* value (yellow), and lastly crepe flour with 50 percent substitution of wheat flour by sweet potato had higher viscosity than the general formula sweet potato substitution’s formula is improved by adding milk and sugar based on expert’s suggestions. 3) Crepe flour with 50 percent substitution of wheat flour by sweet potato gave higher protein, calcium, phosphorus and vitamin A than the general formula of crepe flour while providing less energy, carbohydrate and fat than the general formula, 4) Crepe flour with 50 percent substitution of wheat flour by sweet potato had less L* value (lightness) than the general formula albeit higher for a* value (red) and b* value (yellow), and lastly crepe flour with 50 percent substitution of wheat flour by sweet potato had higher viscosity than the general formula