• The Korean Journal of Food And Nutrition
• /
• v.31 no.4
• /
• pp.571-575
• /
• 2018

The author made rice cookies using 100% rice and measured their density, spreadability, color, hardness, and fatty acid contents. The density was not significantly different between wheat cookies and the rice cookies made here; however, the density of dough tended to be higher in the rice cookies. Spreadability tended to be lower in rice cookies than wheat cookies. Regarding the color of rice cookies, L, indicating brightness, was found to be higher in rice cookies than in wheat cookies, and a, indicating redness, was found to be lower in rice cookies than in wheat cookies. B, indicating yellowness, was not significantly different between wheat cookies and rice cookies, and hardness tended to be lower in rice cookies. Regarding fatty acid contents, saturated fatty acids such as myristic acids, palmitic acids, and stearic acids were found in rice cookies; However, the contents of saturated fatty acids tended to be lower in rice cookies than in wheat cookies. The monounsaturated fatty acids found in rice cookies were mainly oleic acids, and the polyunsaturated fatty acids found in them were linoleic acid, and these were found more in rice cookies than in wheat cookies. Concerning essential fatty acids such as linoleic acids, linolenic acids, or arachidonic acids, they were found more in cookies made of rice powder than in those made of wheat powder.

• Journal of the Korean Society of Food Culture
• /
• v.21 no.6
• /
• pp.685-694
• /
• 2006

The quality characteristics of cookies containing brown rice flour, which has a greater variety of functional components than wheat flour, were studied. The results of the pasting properties shows that the inclusion of brown rice flour to the wheat flour-mixture did not affect the pasting temperature for up to 30% inclusion. The total dietary fiber and total polyphenol content increased and color of the cookies became darker with increasing brown rice flour content. According to the results from TA on texture, the hardness decreased and the crispness increased significantly(p<0.001, p<0.05, respectively) with increasing brown rice flour content. From the acceptance test, the aroma and texture of the cookies with added brown rice flour were significantly(p<0.001) lower than those of the wheat flour cookies. However, the appearance, taste, and overall acceptance of the cookies with added brown rice flour did not differ significantly from those of the wheat flour cookies. According to the results from the sensory evaluation, the savory aroma of the cookie with 30% brown rice flour was significantly strong(p<0.001). The brown rice flavor of the cookies with brown rice flour was significantly stronger(p<0.001) than that of the wheat flour cookie, but there were no significant differences among the cookies with brown rice flour in it. The crispness of the cookies increased significantly(p<0.001) with the inclusion of brown rice flour in the mixture, especially for the mixture with 30% brown rice flour which had the highest value of crispness among the cookies. The graininess and brown color of the cookies increased significantly(p<0.001) with increasing brown rice flour content, especially for the mixture with 30% brown rice flour which had the highest values among the cookies.

• Korean journal of food and cookery science
• /
• v.27 no.6
• /
• pp.681-689
• /
• 2011

Yakkong germinated for 48 h at $23^{\circ}C$(48G), which showed the highest isoflavone content, was prepared with no heat treatment(48G-NH) or with additional heat treatment entailing 20 min boiling(48G-20B) or 15 min roasting(48G-15R). After being ground, each powder was substituted for rice flour by 10, 20, or 30% in rice cookies and compare with the control(100% rice flour cookies). The rice cookies containing 20 or 30% 48G-NH showed the highest crispness in texture and the lowest spreadability. The rice cookies containing 48G-20B and 48G-15R did not show a change in spreadibility, regardless of substitution level. For the rice cookies with 48G-15R, when the substitution level increased to 30%, the crispness decreased and hardness increased. The rice cookies with 48G-20B showed the lowest crispness regardless of substitution level. In terms of color, rice cookies substituted with Yakkong powder showed lower L and higher a* values than the control, however there were no tendencies related to b* value change. In sensory testing, rice cookies substituted with YK-48G had an improved quality, especially in flavor and texture as well as in function. The most acceptable substitution level was 20% of 48G-15R.

• Korean journal of food and cookery science
• /
• v.22 no.2 s.92
• /
• pp.193-203
• /
• 2006

The quality characteristics of cookies containing black rice flour, which has a greater variety of functional components than wheat flour, were studied. The results of the pasting properties shows that the inclusion of black rice flour to the wheat flour-mixture did not affect the pasting temperature but increased the enthalpy, indicating that more energy is needed for the starch gelatinization. The total dietary fiber and total polyphenol content increased and the cookies color became darker and deeper with increasing black rice flour content. According to the results from TA on texture, the hardness decreased and the crispness increased significantly (both, p<0.001) with increasing black rice flour content. From the acceptance test, the appearance, aroma and texture of the cookies with added black rice flour were significantly (p<0.001) lower than those of the wheat flour cookies. However, the taste and overall acceptance of the cookies with added black rice (lour did not differ significantly from those of the wheat flour cookies. According to the results from the sensory evaluation, the aroma, black rice flavor, crispness, graininess and color(gray-violet) of the cookies increased significantly(p<0.001) with increasing black rice flour content and those of the cookies with 30% black rice flour had the highest values among the cookies which weren't significantly different from those of the cookies with 20% black rice flour. From the above results, the optimal ratio for the addition of black rice flour to the cookies was 10% from the viewpoint of the sensory evaluation and functional components.

• Korean journal of food and cookery science
• /
• v.29 no.5
• /
• pp.469-478
• /
• 2013

The effects of tapioca starch (TS) and tapioca modified starch (TMS) as additives on the quality characteristics of rice cookies were investigated in this study. The amounts of TS and TMS replaced were 5, 10 and 15%(w/w) based on 100 g of rice flour. At the result of rapid viscosity analyser (RVA) properties of rice flour added with starches, peak, trough, and final viscosity of rice flour added with TMS decreased significantly(p<0.05). Hardness of dough and cookies as measured by Texture analyzer (TA) significantly decreased upon addition of TMS, and hardness of cookies significantly decreased upon addition of TS, hardness of cookies TMS lower than TS. L value of dough and cookies increased upon addition of TMS, whereas a value decreased upon addition of TMS. Spreadability of cookies increased upon addition of TMS, 10% TMS is the highest. Bulk density of dough decreased upon addition of TMS, bulk density of cookies decreased upon addition of TS and TMS, and bulk density of TMS cookie lower than TS cookie. In sensory evaluation, 10% TS added rice cookies showed the highest score in overall acceptability, hardness, brittleness, color, softness, taste and flavor, and 15% TS added rice cookies showed the highest score in appearance. And 15% TMS added rice cookies showed the highest score in overall acceptability, taste, brittleness, flavor, and 10% TMS added rice cookies showed the highest score in hardness, flavor, taste and color. It is indicated that the quality characteristics and sensory characteristics of the rice cookie can be improved by adding TS and TMS.

• Journal of the Korean Society of Food Culture
• /
• v.5 no.2
• /
• pp.207-215
• /
• 1990

In this study, the types and characteristics of rice cake, cookies were investicated in the rice grown area-Korea, Japan (Tokyo, Osaka), China (Hongkong), Thai (Bangkok, ChiengMai), Indonesia (Bali, Jakarta), and Philippine (Manila). 1. Rice cakes and cookies were made from rice powder and rice granule. Specially, there were two kinds of basic rice powder one was rice powder in dry and the other was rice juice grinded with water on the millstone. Rice juices were named in China, MeeChang, in Manila, Galapong, in Bangkok, rice powder. 2. The kinds and numbers of steamed rice cakes were the most available in all investicated area. In Hongkong, Bangkok, ChiengMai, and Manila, beatened or kneaded rice cakes could not be seen almost. Only in Hongkong and Bangkok, fried rice cakes were available, while in Japan, boiled rice cakes were not seen almost, and also baked rice cakes were not seen in Korea, Hongkong, Bali, Jakarta. 3. In the east-south Asian area, except rice and glutinous rice, coconut and palm fruits and banana were using in recipies of rice cakes and cookies. They gave soft and tender mouth feeling, white color, and good emulsifying status. 4. The kinds and numbers of rice cookies were the most available in Bangkok, but in Bali and Jakarta, the least. The cookies of Japan had similar texture and shape to rice cake while most of cookies in Hongkong were fried in oils. In Korea, the kinds and numbers of rice cookies were less than those of rice cakes.

• Korean Journal of Agricultural Science
• /
• v.40 no.4
• /
• pp.377-383
• /
• 2013

Premature-green rice is typically obtained by early harvest when culms of rice still appear green in color, and the rice and its food products have been considered as wellbeing foods. This study was carried out to determine the quality characteristics of cookies made from flour added with 10, 20, and 30% whole green rice powde r(WGRP) of two kinds of Hopum and Shinsun waxy rice. The quality characteristics of cookies, including pH, spread factor, color, hardness, and sensory properties, were estimated. WGRP with different levels of 10, 20, and 30% was added into powder for preparing cookies, and their quality properties were evaluated. The pH and hardness of the cookies increased, while spread factor showed highest added with 20% Hopum and Shinsun waxy rice. The color (L) of cookies decreased 20% added with Hopum and Shinsun waxy rice. The sensory properties of cookies was highest added with 20% Hopum and 10% Shinsun waxy rice. The result of this study suggest that addition of 20% Hopum and 10% Shinsun waxy rice are available rice cookies. It was concluded that WGRP may have a potential in bakery industry as a new food material.

• Journal of Practical Agriculture & Fisheries Research
• /
• v.15 no.1
• /
• pp.45-52
• /
• 2013

This study was carried out to investigate the influence of black rice powder addition on quality attributes of cookies. The cookies was made with various black rice powder concentration(3%, 6%, and 9%). The specific volume of cookies didn't show significant difference, and the width determined by the water content in the dough was decreased with increasing content of black rice powder. The L value in the cookies was significantly the largest value in the control group. The a and b values were the highest in the 9% substituted sample group. According to the sensory evaluation of cookies, the scores of color, flavor, and texture were raised by the addition of black rice powder. Overall acceptance of 6% cookies showed higher value than that of the 3% and 9%.

• Culinary science and hospitality research
• /
• v.18 no.3
• /
• pp.215-226
• /
• 2012

Physicochemical and sensory characteristics of Curcuma Longa L cookies prepared with various levels of rice flour were investigated in this study. There were significant differences in the density of dough, and it had the highest value of 1.32 in the control group. The pH and moisture content of dough increased by addition of rice flour. Spread factor of cookies was significantly decreased by addition of rice flour. DPPH radical scavenging activity of the control group was 58.72%, whereas cookies with rice flour ranged from 59.26~61.41%. The L value of brightness was increased, but a and b value were decreased significantly by addition of rice flour. The hardness of the control group was higher than that of the cookies prepared with different levels of rice flour. Sensory evaluation scores in terms of appearance, flavor, taste, texture and overall preference for cookies showed that 50% and 75% substituted sample groups were higher than those of the other groups. The results of this study suggest that addition of 50~75% rice flour is the best substitution ratio for rice cookies added with Curcuma Longa L.

• Korean journal of food and cookery science
• /
• v.23 no.6
• /
• pp.785-792
• /
• 2007

The aim of this study was to develop rice cookies based on 'Goami 2' rice, and made with sesame (white and black) and perilla seeds. Furthermore, we studied the physicochemical and sensory characteristics of the cookies as well as the alternative effects of the sesames or perilla seeds for butter, where we substituted the sesames or perilla for 30% of the total butter. The pH values of the cookie doughs made with the sesames or perilla seeds were significantly different (p<0.001), whereas the spread factors of the doughs were not significantly different. The Hunter color L-, a-, and b- values were significantly different for the cookies made with the added sesames or perilla seeds (p<0.001). The brittleness of the Goami 2 rice cookies (control) was significantly higher than that of the cookies made with the sesames or perilla (p<0.001). In a descriptive analysis performed by 8 trained panelists, the following sensory characteristics: yellow, black, sweet taste, nutty taste, nutty odor, oily flavor, and off flavor, were significantly different among the cookie samples. In a consumer test by 50 women students, the Goami 2 rice cookies were preferred in the following order: Goami 2 rice cookies with no additions > black sesame cookies > white sesame cookies > perilla cookies. In conclusion, some physicochemical and sensory characteristics of the cookies were different, in relation to being made with or without the sesame or perilla seeds. However, because of the small difference in acceptance among the cookies, the sesame and perilla rice cookies show strong potentials for consumer acceptance. Moreover, the black sesame cookies were more acceptable in terms of butter substitution for the cookie preparation.