To promote the consumption of race, comparative study was performed on characteristics of wheat flour noodle mixed with brown rice flour and colored rice flour. Protein content of colored rice was higher than that of the brown rice, but lipid and ash contents were similar to those of brown rice. Colored rice flour had significantly lower peak viscosity, holding viscosity, breakdown viscosity, final viscosity and setback viscosity than those of wheat flour, while brown rice had significantly higher peak viscosity, breakdown viscosity and setback viscosity than those of colored rice flour and wheat flour. Colored rice and brown rice had 5.3~6.4% total dietary fiber, and the proportions of soluble fiber in total dietary fiber were quite low, ranging from 9.4% to 18.8%. L(brightness), a(redness) and b(yellowness) of raw noodles were measured using a colorimeter. L(brightness) and b(yellowness) values of Asian raw noodles made from colored rice and brown rice significantly decreased. Addition of colored rice flour and brown rice flour to Asian noodle reduces cutting forces of dry and cooked noodles. The cooked noodle with 10% chalheukmi waxy rice flour was the highest in the cutting force of cooked noodle. Addition of 20% chalheukini waxy rice flour and 20% brown rice flour to wheat flour was got to a relatively high score for appearance, color, texture, taste and overall eating quality from sensory evaluation of cooked noodles.
This study was conducted to identify the optimal mixing ratios of pomegranate powder or Opuntia humifusa powder for the production of jelly. To establish the amount of pomegranate powder or Opuntia humifusa powder that could be added to jelly, physicochemical sensory characteristics and textural properties were measured. Specifically, jellies were prepared using gelatin that contained a ratio of 0.5, 1, 1.5 and 2%(w/w) pomegranate powder or Opuntia humifusa powder. Sensory evaluation of the sweetness, chewiness, springiness, hardness, transparency and overall acceptability of jelly prepared using 0.5% pomegranate powder resulted in a high score. Similarly, the appearance, sweetness, chewiness, springiness, hardness, transparency and overall acceptability of jelly prepared using 0.5% Opuntia humifusa powder received a high score. Taken together, the results of this study suggest that pomegranate and Opuntia humifusa can be useful in the production of high quality jelly.
Comparative study was performed on noodle characteristics among three domestic wheat varieties (Geurumil, Eunpamil and Alchanmil) and imported one (ASW: Australian Standard White). For the noodle-related characteristics, crude protein, ash and gluten contents were measured, and rheological properties of dough, flour color difference, particle size distribution, cooking properties and sensory properties were evaluated. Crude protein content of Geurumil, Eunpamil and Alchanmil flour were 12.8%, 14.2% and 11.2%, respectively, whereas that of ASW flours was 9.1%. Ash content was the highest in Geurumil (0.56%). The yield of patent flour was the highest in Eunpamil (53.4%) among all the varieties. Higher dough stability with farinogram and maximum viscosity with amylogram were shown in Eunpamil and Alchanmil than those of ASW. The cutting force of cooked noodle from ASW was the lowest maximum, that was measured by texture analyzer. Fairly good color and sensory scores were obtained in cooked noodle of Alchanmil. Studies of noodle-related characteristics indicated that domestic Eunpamil was higher in protein content and flour yield, and Alchanmil was higher dough stability and color, when compared to those of imported ASW. Alchanmil and ASW had good scores in sensory evaluation, especially appearance and color.
In order to manufacture the high-quality products as well as to promote their consumption, dry noodles were prepared with Korean wheat flour and brown glutinous rice flour with and without aroma and quality characteristics of dry noodles were investigated. The average particle size distributions of aromatic brown glutinous rice flour and brown glutinous rice flour ranged from 12.38 to $15.59\;{\mu}m$, which was different from that of control. As a result of farinograph study, water absorption of dough increased and decreased with increasing amounts of brown glutinous rice flour with and without aroma, respectively. Stability, developing time and elasticity of dough showed a decreasing tendency. When compared with the control, aromatic brown glutinous rice samples produced noodles with a greater degree of lightness and a less intensity of yellowing. Replacement of up to 20% of Korean wheat flour by aromatic brown glutinous rice flour and brown glutinous rice flour in noodle had similar cooked properties such as weight gain, volume and water absorption as compared with the control. From the result of sensory evaluation, composite flours(addition up to 30% aromatic brown glutinous rice flour and up to 20% brown glutinous rice flour) and control were rated with a relatively high quality score for appearance, taste and overall eating quality.
Various sterilization temperatures $(110^{\circ}C,\;120^{\circ}C,\;130^{\circ}C)$ and air volumes (air, 31ml, half-vacuum; 13ml, vacuum; -0.7ml) within the retort pouch were tested for the development of the simple retort rice processing techniques in which the pouch were filled with rice and water, and then sterilized. Water content of retort rice was found to be 59.0-63.3% resulting from mixing the rice and water in the ratio of 1:1.1. The most uniform water content was obtained from retort rice sterilized at $130^{\circ}C$ and packaged under vacuum. The larger water content differences were observed with the increase in internal air volumes within the retort pouch. Spreading degree of retort rice was geater than that of general cooked rice, was lower in upper layer than in low layer, and became lower with the larger air volume and higher sterilization temperature. a degree of rice became higher with the Increase of sterilization temperature but that was not affected by the internal air volume of the pouch. The higher sterilization temperature and the lower the air volume, the higher the whiteness was. The highest whiteness was obtained by packaging under vacuum and sterilizing at $130^{\circ}C$. Intact degree was much higer in packaging under air than vacuum. In sensory evaluation the retort rice of vacuum pack was good in color and spreading degree but not in appearance because of blocking and deforming, but that of air pack was good in texture on the contrary. The best quality was obtained by packaging under half-vacuum and sterilizing at $130^{\circ}C$.
We examined the dough properties, baking qualities, and sensory aspects of commercial hard wheat flour (Q1) that was supplemented with up to 30% rice bran flour. The loaf volumes of bread with 20% and 30% rice bran were 83% and 65% respectively, of the control (wheat flour only). However, a 5% and 10% supplement of rice bran increased loaf volume by 5.2% and 0.7% respectively, over the control. After storage of loaves for three days, bread crumbs from loaves with 5% rice bran were significantly softer than those with 10% 20% and 30% rice bran. The hardness of dough increased with the proportion of rice bran, but springiness and cohesiveness were inversely related to hardness. Addition of rice bran increased loaf pH. Rice bran decreased lightness, but significantly increased redness and yellowness in a concentration dependent manner. Sensory investigation indicated that bread with 5% rice bran was not significantly different from the control. However, more panel members preferred the appearance and flavor of bread with 5% rice bran.
We investigated the quality characteristics of cookies prepared after addition of various concentrations of used coffee grounds (0%, 1%, 3%, and 5%, all w/w) as a substitute for flour. As coffee grounds concentration rose, decrease in the pH of cookie dough was evident. In terms the water-holding capacity of dough, cookies prepared 3% (w/w) coffee grounds yielded the highest value. With an increase in coffee grounds concentration, the color a value rose, but the L and b values fell. The gelatinization temperature became higher, but both peak viscosity and 15 min-height values declined. The spread and loss ratios decreased but the leavening rate rose significantly with elevation of coffee grounds concentration. The hardness of cookies rose but slightly, as coffee grounds concentration rose. Upon sensory evaluation of all of appearance, flavor, and overall preference, cookies prepared with addition of used coffee grounds were superior to those without grounds, whereas those prepared using 1%-3%(w/w) coffee grounds showed the highest overall acceptability. Thus cookies made using coffee grounds can be economically competitive. In addition, the ingredients of coffee powder and used coffee grounds were shown to be very similar, except that coffee grounds contain 15-fold less caffeine than dose coffee powder. As health concerns are popular today, the use of coffee grounds to manufacture processed food may be acceptable.
This study was conducted to investigate quality characteristics of white pan bread with Cudrania tricuspidata leaf powder having functional components. Mixograph, pH, TPA, volume, specific volume, moisture, CrumbScan, color value, sensory evaluation and shelf-life test were performed on the white pan bread with Cudrania tricuspidata leaf powder. The obtained results are as follows. Mixogram analysis results showed that the dough with Cudrania tricuspidata leaf powder was suitable for baking quality. The more Cudrania tricuspidata leaf powder was added in the dough, the higher dough pH was and the lower pH values after fermentation and of the final productwere. TPA analysis results showed that higher amounts of Cudrania tricuspidata leaf powder resulted in increased hardness, chewiness, and gumminess of the white pan bread. Volume and specific volume of white pan bread were decreased with increased amounts of Cudrania tricuspidata leaf powder. CrumbScan images showed that fineness of grain, crust thickness, and volume of the bread were significantly different depending on the amount of Cudrania tricuspidata leaf powder. While color value analysis showed that increasing the amount of Cudrania tricuspidata leaf powder resulted in low L and a values. The results of the acceptance test showed that CLP3 had better scores in the appearance and texture characteristics than the control, while taste and overall acceptance were higher in the CLP2 compared with the control. According to the results of the shelf-life test, the white pan bread with 1~2% of Cudrania tricuspidata leaf powder had a significantly lower hardness when compared with the control. It was judged that a lower amount of Cudrania tricuspidata leaf powder could help in maintaining the softness of bread crumbs. Moisture content in the white pan bread decreased with the increased amounts of Cudrania tricuspidata leaf powder, but there were no significant differences among specimens.
Journal of the Korean Society of Food Science and Nutrition
/
v.33
no.4
/
pp.730-735
/
2004
The effects of cook-chill and sous-vide upon the vitamin retention and acceptance of soybean sprout muchim and soybean sprouts soup were evaluated. When the sous-vide packaged soybean sprout muchim was stored at 3$^{\circ}C$ for 1, 3, and 5 days, the contents of thiamin, riboflavin, and ascorbic acid were not changed. However, the nutrient contents were changed in sous-vide packaged soybean sprouts soup stored at the same conditions at each storage time up to 5 days. The contents of thiamin, riboflavin, and ascorbic acid showed the lowest level at 5 days after storage. Regarding customer's acceptance of sous-vide packaged soybean sprout muchim compared to the freshly cooked one, the former had a higher score in taste and color than the latter. Overall acceptability of the sous-vide soybean sprout muchim had a lower score than that of the freshly cooked one, but the sensory characteristics did not show any significant difference between them. The freshly cooked soybean sprout soup had higher scores in taste, flavor, color, texture, appearance, and overall acceptability than the son-vide packaged soybean sprout soup. The former, however, had a significantly higher score in color (p<0.05) and the overall acceptability (p<0.01) than the latter.
The purpose of this study was to compare effects of various bone grafts on periodontal regeneration of alveolar bone defects in dogs. Seven adult dogs aged 12 to 18 months were used in this study. Experimental alveolar bone defects were created surgically with a #1/2 round bur at the furcation area of the buccal surface of the mandibular 3rd, 4th premolars and 1st molar. Each experimental alveolar bone defects were grafted with dense hydroxyapatite, natural coral, and decalcified freeze-dried bone, and respectively divided into DHA, NC, DFDB group. An area without bone graft was divided into control group. At 1,2,4,6, and 12 weeks, dogs were serially sacrificed and specimens were prepared with Hematoxylin-Eosin stain and Mallory stain for light microscopic evaluation. The results of this study were as follows : 1. In control group, the matrix change of granulation tissue was observed at 1 week. And in experimental groups, the appearance of connective tissue around graft materials was loosely formed at 1 week, but densely formed at 2 weeks. 2. In every group, the slight formation of new trabecular bone was seen from remaining bone at 1 week. 3. The DHA and NC particles were gradually encapsulated by new trabecular bone from remaining bone, and the osteoid tissue was directly induced from DFDB particles. 4. The presence of osteoblasts was first observed at 1 week in control group and at 2 weeks in NC group, but at 6 weeks in DHA group. 5. In DHA group, the resorption of particles was not observed until 12 weeks. But in NC and DFDB group, the particles were resorbed at 6 weeks and replaced by new bone. And the amount and size of particles were reduced, and their border represented irregular form. In summary, in three experimental groups the inflammatory or foreign body reaction were slight, but the regeneration of new osteoid tissue and the matrix change of dense connective tissue fiber were observed. Especially, NC and DFDB materials were considered as the biocompatible graft materials which were effective in the regenertion of new bone.
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