• Journal of Food Hygiene and Safety
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• v.35 no.5
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• pp.489-494
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• 2020

A total of 101 samples of convenience baby food products were analyzed by microwave digestion and mineral nutrients (iron, zinc, calcium, magnesium) were determined by inductively coupled plasma optical emission spectroscopy (ICP-OES). By type, the samples included 44 rice porridges, 40 soft-boiled rices, 11 purees, and 6 powders. The mean values for iron (Fe) content were 0.05 to 0.45 mg/100 g (excepted powder type, mg/l0 g). This was equivalent to 22.35% for rice porridge, 10.55% for soft-boiled rice, 9.88% for puree and 2.74% for powder type compared to the KDRIs (Dietary Reference Intakes for Koreans), respectively. The mean values for zinc (Zn) was 0.06 to 0.28 mg/100 g (excepted powder type, mg/l0 g) and the KDRI ratio was the lowest at 5.94% in puree, with 27.76%, 28.95% and 10.91% in rice porridge, soft-boiled rice and powder type, respectively. Calcium (Ca) content relative to KDRIs was relatively low compared to other minerals, with 6.65% for rice porridge, 3.61% for soft-boiled rice, 6.24% for puree and 3.07% for powder type, respectively. The magnesium (Mg) content of baby food ranged from 13.4% to 39.0% compared to KDRIs, and was included in all baby food as a whole. For balanced nutritional mineral supply to infants, it is recommended that information on mineral sources and ingredients in convenience baby food be clearly provided to ensure proper growth and development.

• Korean Journal of Community Nutrition
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• v.14 no.5
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• pp.545-555
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• 2009

School foodservice customers are likely to be tired of repeated cycle menus and their satisfaction for meals offered in school is inclined to be low. The menu variety is an important factor in increasing customer satisfaction. The purpose of this study was to investigate customer perspectives for applying rice based bread menus in order to add menu variety and promote using rice processed products in school foodservice. The questionnaire was distributed to 760 parent samples in elementary schools and 520 student samples in middle/high schools and a total of 665 and 387 usable data were collected, respectively. Food habits such as preference for cooking method, menu preference, food allergy and nutritional perspectives for menu and customer perception for rice based bread like quality, reliability, price, and purchasing convenience were investigated using 7 Likert scale. Also expected menu types applying rice based bread and offering frequency of rice bread menu were examined. Preference level for bread-based meals were moderate and students' preferences were slightly higher than parents. Menu types applying rice bread expected by middle/high school students were western food (49.4%), spaghetti (28.4%), set menu (13.7%), noodle (17.6%), Korean food (11.1%), Chinese food (10.9%) and porridge (4.5%). The most occupied rate was once in a week for expected offering frequency. Most respondents perceived that rice bread was more nutritive and qualitative than the wheat based one.

• Journal of the East Asian Society of Dietary Life
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• v.26 no.6
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• pp.565-574
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• 2016

This study investigated eating behaviors of high school students (209 males and 230 females) in Daegu region by gender. As a result of analyzing breakfast intake frequency, 'Not rarely eat' showed the highest (25.1%), followed by '5 times a week' (24.4%), '2 times a week' (17.3%), '3 times a week' (15.0%), '1 time a week' (11.6%), and '4 times a week' (6.6%). Regarding reasons for skipping breakfast, 'lack of time' showed the highest percentages. For their breakfast, 53.5% of students ate boiled rice with side dishes. Regarding reasons for skipping breakfast, 'buy and eat snack' showed the highest percentages. Regarding favorite breakfast menu, 'rice roll, rice ball, rice burger' showed the highest percentage (55.4%), followed by 'bread & cereal' (28.7%) and 'fruits & vegetable' (7.7%). Regarding purchase of breakfast alternatives, 'Yes' was highest. Considering actors for choosing a breakfast alternative, there is a need for 'convenience of food consumption', 'spending less time', 'easy cooking', 'favorite menu' and 'taste' of the breakfast alternative. When asked how much they like breakfast alternative menus, they responded that they liked 'rice roll, rice ball, rice burger' (3.91), 'bread & cereal' (3.67), 'fruit & vegetable' (3.66), 'noodle' (3.39), 'porridge' (3.18) and 'rice cake' (3.07). This result shows that breakfast menus should be developed according to high school students preferences.

• Korean journal of food and cookery science
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• v.15 no.4
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• pp.327-337
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• 1999

This study was conducted on a sampling of 700 mixed college students from seven different schools nationwide by written questionnaire to evaluate the value system of convenience foods among Korean college students. Korean students put value on the following categories of convenience foods in order; convenience, taste, price, appearance, appliance to daily life, variety, locality, nutritional value, originality, improvement required, cleanliness and tradition. Significant differences between the sexes occurred in categories as cleanliness and convenience, since females considered convenience foods as convenient but not so clean (safe to eat). This study also conducted factor analysis on 24 individual convenient foods. Noodles laid emphasis on nutritional value; where refrigerated foods, ready to eat (RE) side dishes, on-the-spot kimbab, and sandwiches focused on cleanliness. Noodles. cereal, and instant soup focused on price. Frozen pizza, noodles, retort, RE meat, ham, fish cakes were dependent on locality and traditionality. Noodles, instant food, and packed kimchi scored highly on convenience. Frozen fried rice, retort, instant porridge, instant rice, RE meat, cereal, instant soup, and RE side dishes on consumption on a regular basis. Cereal, refrigerated foods, and RE side dishes laid emphasis on taste. Noodles, instant rice, cereal, ham, and RE side dishes focused on variety. Retort, RE meat, ramen, cereal, ham, and on the spot sandwiches looked to originality, while canned foods was recognized as ‘needing improvement’.

• The Korean Journal of Food And Nutrition
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• v.28 no.2
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• pp.313-319
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• 2015

This study encouraging the consumption of rice. The Tarakjuk in which red yeast rice was added showed the highest water content 78.31%. The viscosity of RRT20, which had the largest amount of red yeast rice, was the lowest for 4,125.50, and pH was the highest in RRT0 The sugar content of Tarakjuk with red yeast rice was the highest in RRT0 for. lightness (L) was lowest in RRT20 which had the largest amount of red yeast rice for, and its red and yellow lighteners were also the highest for respectively. storage at $4^{\circ}C$, no microorganism found for 0 to 1 day of storage but found in every group. The group showed the smallest of microorganism for $2.9{\times}10^2CFU/mL$. On the 7 day, microorganism also found 40% added showed the smallest of microorganism for $3.1{\times}10^4CFU/mL$. The color of the 20% added group, 6.74, was higher than that of the control group, 4.87, but the difference was not significant. The flavor was the in the 30% added group for 5.90, and taste was the in the 20% added group for 6.01 The control group showed the lowest preference for 4.91. The after taste was the in the 30% added group for 5.48. The viscosity of the 40% added group was higher for 5.39 than that of the control group for 5.06, no significant difference. The overall preference was rated highly, and the 20% added group showed the highest preference for 5.57.

• Journal of the Korean Society of Food Culture
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• v.21 no.2
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• pp.171-178
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• 2006

Tarakjuk with different amylose content was made up using roasted rice flours that consisted of the highest enzyme-resistant starch (RS), while differential scanning calorimetry (DSC) was also utilized to measure the gelatinization temperature of these roasted rice flours in order to establish cooking temperature of tarakjuk. The following qualities of tarakjuk with different amylose content were studied: color, viscosity, spreadability, starch fractions involving total starch (TS), rapidly digestible starch (RDS), slowly digestible starch (SDS) and RS, in vitro starch digestibility (IVSD) and sensory properties. During experimentation, it was found that as the amylose content of the rice flour decreased, the L value of tarakjuk decreased, whereas a value increased significantly (p<0.05). Also, while viscosity showed to increase significantly (p<0.05), on the opposite end, the property of spreadability decreased. TS ranged from $15.95{\sim}17.31%$, RDS $9.36{\sim}10.16%$, SDS $5.46{\sim}6.91%$ and RS $0.33{\sim}1.07%$, on a dry basis. Although the amylose content of rice flours decreased, IVSD increased, however showing no significant difference. When testing the sensory properties of tarakjuk, color and viscosity increased, whereas clumpiness decreased. Ilpum tarakjuk showed the highest score for nutty taste and overall acceptance levels. In fact a high correlation was shown between nutty taste and overall acceptance level (p<0.01), which leads one to believe that nutty taste is a prime factor that greatly influences overall acceptance. Furthermore, viscosity was positively correlated with both a and b values, however negatively correlated with L value (p<0.05). Moreover, roasted nutty taste and overall acceptance were positively correlated with a value (p<0.05), respectively. In conclusion, the above results suggest that tarakjuk could be made by choosing the appropriate rice flour based on the nutritional or sensory purpose.

• Journal of the Korean Society of Food Science and Nutrition
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• v.45 no.4
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• pp.569-576
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• 2016

This study researched the effects of cooking methods on phytochemical-enriched thin rice porridge (RP) of three colors (red, yellow, and green). Each of the RPs was prepared by three cooking methods and retorted through two-steps (step 1, at $80^{\circ}C$ for 15 min; step 2, at $82^{\circ}C$ for 25 min) for pasteurization. Cooking method (CM) 1 involved heating a mixture of all ingredients while CM 2 involved addition of apple/beet (AB, red), sweet-pumpkin/cabbage (PC, yellow) or vitamin/pear (green) while heating rice flour and glutinous rice flour. CM 3 involved mixing pre-cooked fruits and vegetables with cooked thin RP. The viscosity of RP prepared by CM 1 was lower than those of other RPs (P<0.05). The result of colorimetric a value show that red and green color of AB and VP prepared by CM 2 and CM 3 were most vivid. Contents of phytochemicals and antioxidants were higher when RP was prepared by CM 2 and CM 3 compared to CM 1. ${\Delta}E$ values of PC showed no significant difference before and after pasteurization, whereas AB and VP were significantly different (P<0.05). Antioxidant activity after retorting was not significantly different from those of un-retorted RPs. The results of color, phytochemical content, and antioxidant activity show that CM 2 or CM 3 were considerably better than CM 1, whereas cooking method had no effect after two-step retorting. Therefore, uncomplicated cooking method such as CM 1 or CM 2 are suited for commercial production of RPs.

• Korean Journal of Food Science and Technology
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• v.36 no.5
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• pp.765-772
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• 2004

Cooking condition of Tarakjuk (milk-rice porridge) was established based on gelatinization temperature using differential scanning calorimetry (DSC) of roasted Ilpum rice flour, which has highest enzyme-resistant starch (RS) content. Effect of cooking temperature and time on DSC characteristics, crystallity with X ray diffractogram, RS content, in vitro starch digestibility (IVSD), amino acid composition, and in vitro protein digestibility (IVPD) of Tarakjuk were determined. Tarakjuk was cooked at 50, 56.5, 64, and $69^{\circ}C$ for various durations. Rice flour ingredient used was Ilpum, previously roasted at $185^{\circ}C$ for 25 min. Tarakjuk cooked at 50 and $56.5^{\circ}C$ showed two thermal transitions between $63.7-125.2^{\circ}C$ as determined by DSC, corresponding to endotherms of starch gelatinization $(63.7-73.8^{\circ}C)$ and melting of amylose-lipid complex (AM-lipid complex, $97.7-125.2^{\circ}C$), whereas that cooked at 64 and $69^{\circ}C$ showed only AM-lipid complex melting transition between $96.9-127.6^{\circ}C$. As cooking temperature increased, RS content of Tarakjuk decreased, whereas IVSD increased. Total amino acid content was between 11,558-15,601mg/100g, depending on cooking condition used. Compared with conventionally made control, contents of essential amino acids, such as lysine and tryptophane, were higher at 50 and $56.5^{\circ}C$, and IVPD showed higher increase. Results reveal degree of gelatinization in Tarakjuk with high RS content as well as low IVSD and high IVPD, which are important from physiological and nutritional point of view, can be produced by controlling cooking condition.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.6
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• pp.948-955
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• 2011

The purpose of this study was to investigate middle school boys' and their parents' preference on menu types of school breakfast. School breakfast was served at a boys' middle school in Gyeonggi-do, Korea for 7 weeks. Ten types of convenient menus, including steamed rice, rice porridge, rice cake, bread, or cereal, were served to 200 students free of charge. After the service period ended, questionnaires were distributed to the students and their parents. Usable questionnaires were returned by 142 (71%) students and 124 (62%) parents. About two-thirds (66%) of the students and about half (51%) of the parents preferred convenient menus to traditional menus as school breakfast. The students were the most highly satisfied with the menu type including hot dog buns whereas the parents regarded these as neither appropriate nor inappropriate as school breakfast. Overall, the menu types including steamed rice such as Kimbap or rice balls were highly ranked in terms of the students' level of satisfaction as well as the parents' level of appropriateness evaluation. About 20% of the students and 50% of the parents expressed intention to eat or make their children eat school breakfast even if payment is required. Over two-thirds of both the students (70%) and parents (68%) responded that less than 1,500 won per meal would be the appropriate price of school breakfast. The results of this study show that convenient menus could be considered as alternatives to traditional menus in school breakfast service, although additional efforts are necessary to develop such menus to satisfy both the students and their parents.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.58 no.4
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• pp.451-458
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• 2013

The physicochemical properties and cooking qualities of four rice varieties (Goami, Giant-embryonic rice, Baegjinju, Aranghyangchal) which grown under ecofriendly farming as development of material for chronic disease tailored instant rice and porridge, respectively, were investigated. The contents of crude protein, crude lipid and crude fiber were the highest in Goami. The water absorption rate of Aranghyangchal at $85^{\circ}C$ was higher than other rice. However on rice flour, the water absorption rate and solubility of all functional rices at $85^{\circ}C$ were higher than control (brown rice flour). In addition viscosity of all functional rices at $100^{\circ}C$ were higher than control (brown rice flour). In spite of brown rice, Aranhyangchal showed no significant differences about hardness of Ilpum (white rice). The sensory evaluation was shown that Aranghyangchal was the highest in glossiness, flavor, roasted nutty taste, cohesiveness and overall preference. Although Giant-embryonic rice and Baegjinju were brown rice, overall preference was higher than Ilpum (white rice). These study results were showed that the functional rices could be good to make instant rice.