Consumer sensory evaluation of pasta
Sensory evaluation was performed on cooked pasta by an untrained consumer panel (n = 50), 23 males and 27 females; 20 to 57 y old (mean ± SD = 29.3 ± 7.8). Ethical approval for the study was granted by the Deakin Univ. Faculty of Health, Human Research Ethics Advisory committee. Panel members were recruited via advertisement at Deakin Univ., Melbourne, Australia, through which they were informed of the types of pasta used in the study. Panel members were staff and students of the Univ. and were selected based on lack of allergy to gluten protein.
Pasta samples were cooked for the optimum cooking time without the addition of salt, drained, and kept warm until serving. Panelists assessed pasta samples (10 strands per sample) for consumer acceptability while seated isolated in sensory booths. The samples were served in plastic plates, labeled with random 3 digit codes, in a randomized order. The pasta samples were evaluated for acceptability of color, flavor, texture (in mouth), and overall acceptability using the 9-point hedonic scale (1 = dislike extremely and 9 = like extremely) (Meilgaard and others 2007).
Two preset criteria as explained by Clark and Johnson (2002), with some modification, were used to determine the acceptability of sorghum-containing pastas for the purposes of this study. RSF or WSF-containing pasta was considered acceptable if: (i) the mean sensory score for overall acceptability was equal to or greater than 6.0, representing “like slightly” on the 9-point hedonic scale and (ii) the estimated population mean ratings for overall acceptability of the RSF or WSF-containing pasta was no lower than 1 rating category below that of the control pasta; that is, if the lower 95% confidence interval for the mean difference (sorghum-containing minus control) lies above −1.0.
Consumer sensory evaluation of pastaSensory evaluation was performed on cooked pasta by an untrained consumer panel (n = 50), 23 males and 27 females; 20 to 57 y old (mean ± SD = 29.3 ± 7.8). Ethical approval for the study was granted by the Deakin Univ. Faculty of Health, Human Research Ethics Advisory committee. Panel members were recruited via advertisement at Deakin Univ., Melbourne, Australia, through which they were informed of the types of pasta used in the study. Panel members were staff and students of the Univ. and were selected based on lack of allergy to gluten protein.Pasta samples were cooked for the optimum cooking time without the addition of salt, drained, and kept warm until serving. Panelists assessed pasta samples (10 strands per sample) for consumer acceptability while seated isolated in sensory booths. The samples were served in plastic plates, labeled with random 3 digit codes, in a randomized order. The pasta samples were evaluated for acceptability of color, flavor, texture (in mouth), and overall acceptability using the 9-point hedonic scale (1 = dislike extremely and 9 = like extremely) (Meilgaard and others 2007).Two preset criteria as explained by Clark and Johnson (2002), with some modification, were used to determine the acceptability of sorghum-containing pastas for the purposes of this study. RSF or WSF-containing pasta was considered acceptable if: (i) the mean sensory score for overall acceptability was equal to or greater than 6.0, representing “like slightly” on the 9-point hedonic scale and (ii) the estimated population mean ratings for overall acceptability of the RSF or WSF-containing pasta was no lower than 1 rating category below that of the control pasta; that is, if the lower 95% confidence interval for the mean difference (sorghum-containing minus control) lies above −1.0.
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