• Korean Journal of Food Science and Technology
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• v.49 no.5
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• pp.567-573
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• 2017

This study investigates the quality characteristics and antioxidant activities of muffins prepared using various kinds of rice powder. Muffins were prepared by adding 50% white rice, black rice or red yeast rice powders, thereby replacing wheat flour in the basic formulation. Wheat flour muffins had the maximum height and volume. The lightness value of black rice and red yeast rice muffins was lower than that of the wheat flour muffins. Redness was the highest for red yeast rice muffins. The 1,1-diphenyl-2-picrylhydrazy (DPPH) radical scavenging and superoxide dismutase (SOD)-like activities activity of black rice and red yeast rice muffins were higher than those of the wheat flour muffins. The 2,2'-azino-bis-(3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity of red yeast rice muffin was also higher than that of the wheat flour muffins. Thus, the black and red yeast rice powders can be effectively used as functional ingredients in bakeries due to their antioxidant activities.

• Journal of the Korean Applied Science and Technology
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• v.35 no.4
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• pp.1442-1455
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• 2018

The objective of this study was to examinate the differences of general component, chromaticity, pH, weight, loss on baking, specific volume bulk, diameter of upper side and height, mechanical texture, DPPH radical, ABTS radical, Total amount of phenol, Monacolin-K content, sensory test on Muffin using no Red Yeast Rice and different levels (2%, 4%, 6%, 8%, 10%) of Red Yeast Rice. pH was decreased as the amount of added Red Yeast Rice increased(control 8.35, RM2% 7.93, RM4% 7.86, RM6% 7.69, RM8% 7.49, RM10% 7.30). Weight and loss on baking were showed not too different depending the amount of added Red Yeast Rice, and the baking loss were at very low point. Adhesion, cohesiveness, elasticity, viscosity, and chewiness showed no attentive differences on mechanical texture analysis. As the level of Red Yeast Rice increased, DPPH radical, ABTS radical, and Total phenol content decreased. Monacolin K were at higher point as the level of Red Yeast Rice increased. The sensory test showed Taste, Texture, and Overall acceptability gained the highest point when using 4% of Red Yeast Rice. On the sensory test, 4% of Red Yeast Rice was considered to be the best level based on Flavor and Color. The results of these tests show 4% of Red Yeast Rice is most preferred and considered to be most suited with flour and rice flour.

• Korean Journal of Food Science and Technology
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• v.39 no.3
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• pp.272-275
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• 2007

Red yeast rice flour, which is a natural functional material, was used in muffin production at different concentrations ranging from 0 to 10%. The initial pasting temperature was not affected by the addition of red yeast rice flour, whereas peak viscosity and final viscosity decreased with increasing concentrations. The lightness value of the muffins decreased, however, the redness value increased with increasing amounts of red yeast rice flour. The bulk of the muffins was generally reduced by the addition of red yeast rice flour. At the 10% concentration, hardness and viscosity were similar to the control, and there were no changes in springiness or cohesiveness. For the sensory evaluation, parameters such as appearance, color, texture, taste, and overall acceptability increased significantly from the control at the 3% concentration of red yeast rice flour, but flavor decreased with increasing amounts of red yeast rice flour. Based on these results and the sensory evaluation specifically, the optimal amount of red yeast rice flour added to the muffins was the 3% concentration.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.11
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• pp.1358-1365
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• 2017

This study evaluated the quality characteristics of muffins prepared with different amounts (0%, 10%, 20%, 30%, 50%) of fucoidan red yeast (Monascus purpureus) rice powder (FRYR). The weight and pH of muffins increased as the amount of FRYR increased. The height and baking loss rate of muffins significantly decreased when amounts of FRYR increased (P<0.05), whereas moisture content was not significantly different between all samples. L value and b value of muffins significantly decreased when amounts of FRYR increased (P<0.05). However, a value of muffins significantly increased when amounts of FRYR increased (P<0.05). Hardness, chewiness, and brittleness increased with increasing FRYR concentration. Cohesiveness was higher with 30% FRYR, whereas springiness was not significantly different between the samples. In the sensory evaluation, the appearance and crumb color of muffins was higher in groups containing 0% FRYR, whereas flavor, taste, texture, and overall acceptability scores were highest for muffins with 50% FRYR added. The total polyphenol content and 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity of muffins significantly increased with increasing addition of FRYR (P<0.05). Therefore, addition of FRYR could satisfy the sensory function and functional requirements of muffins. Furthermore, this study proposes the development of various products using fucoidan red yeast rice.