Effects of broken jasmine to glutinous rice ratio and carboxymethyl cellulose on the quality of rice cracker
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Abstract
The objectives of this study were to investigate the effects of the ratio of broken Thai jasmine rice cultivar (Khao Dawk Mali 105; KDML 105) to broken Thai glutinous rice cultivar (RD6) on physical and sensory properties of rice cracker. The effects of carboxymethyl cellulose (CMC) at different concentrations on physical and sensory properties of rice cracker were also studied. The rice cracker was prepared from broken KDML 105 (14.61% amylose content) and broken RD6 (4.561% amylose content) at ratios of 100:0, 75:25, 50:50, 25:75 and 0:100. It was found that volume expansion ratio of the rice crackers significantly increased with increasing the ratio of broken RD6 rice (p0.05), which resulted in a significant decrease in hardness of the rice crackers (p
0.05). Color parameters (L*, a*, and b*) of the rice crackers were not significantly affected by the ratio of broken KDML 105/ broken RD6 (p>0.05). Based on sensory evaluation using a 7-point hedonic scale, the rice crackers prepared from the ratio of 25:75 and 0:100 broken KDML 105/broken RD6 obtained higher score than that of ratio of 100:0, 75:25 and 50:50 broken KDML 105/ broken RD6. The physical and sensory properties of the rice cracker affected by different concentrations of CMC were examined. The experiments were varied concentrations of CMC at 4 levels: 0, 1.5, 3 and 4.5%, w/w of broken rice. The results were suggested that the volume expansion ratio and the color a* and b* of the rice crackers were not affected by the addition of CMC at the studied contents (p>0.05), whereas the rice cracker with the addition of 4.50% CMC showed the highest sensorial score of overall acceptability attributes (p
0.05).
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Published manuscript are the rights of their original owners and RMUTSB Academic Journal. The manuscript content belongs to the authors' idea, it is not the opinion of the journal's committee and not the responsibility of Rajamangala University of Technology Suvarnabhumi
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