Effect of Coating on Doughnut Cake Preference using R-index

Authors

  • Tunyaporn Sirilert Department of Product and Development, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.
  • Anuvat Jangchud Department of Product and Development, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.
  • Phaisan Wuttijumnong Department of Product and Development, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.
  • Kamolwan Jangchud Department of Product and Development, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand.

Keywords:

R-index, consumer, preference, biopolymer coating, doughnut cake

Abstract

Signal detection has been used to explain the underlying basis of difference testing from control and produces accurate different values on consumer acceptance. The number of samples presented in signal detection rating test was much lower than that of the instrumental method of limit test, which would require less time and cost for preparation by the experimenter. Signal detection on the preference of coated doughnut cake with different coatings from blend polymer between chitosan (CH) and methylcellulose (MC) at different ratios of CH: MC (1.00:0.00, 0.00:1.00, 0.75:1.25, 1.00:1.00 and 1.25:0.75) were conducted by R-index method. Instrumental measurement on coated doughnut cake were also determined. Results showed that the instrumental method was highly correlated with R-index method. Coating solution of CH:MC at 1.00:0.00 and 1.25:0.75 showed the difference of instrumental measurement on brownish color, odor, hardness and oil content higher than that of the control. The
optimum coatings at CH:MC of 0.00:1.00 (MC) and 0.75:1.25 (CM1) significantly reduced oil uptake without any effect on overall liking.

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Published

2006-02-28

How to Cite

Tunyaporn Sirilert, Anuvat Jangchud, Phaisan Wuttijumnong, and Kamolwan Jangchud. 2006. “Effect of Coating on Doughnut Cake Preference Using R-Index”. Agriculture and Natural Resources 40 (1). Bangkok, Thailand:240-46. https://li01.tci-thaijo.org/index.php/anres/article/view/243555.

Issue

Vol. 40 No. 1 (2006): January-February

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.