• Title/Summary/Keyword: rice type

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Evaluation of Chlorophyll Content, Antioxidant Activity and Phenolic Compounds in the Seedlings of Rice-type Tartary Buckwheat

  • Sharma, Pankaja;Lee, Kooyeon;Park, Cheol Ho
    • Korean Journal of Plant Resources
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    • v.27 no.6
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    • pp.629-634
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    • 2014
  • Rice type tartary buckwheat is used as a substitute for rice in many Asian countries due to its easy dehulling character. The objective of the present study was to determine the chlorophyll, total polyphenol (TP), total flavonoid (TF), antioxidant activity and to quantify the bioactive compounds rutin, quercetin and chlorogenic acid in the seedlings of rice-type tartary buckwheat (RTTB). Young seedlings exhibited higher antioxidant (DPPH radical inhibition) activity in dose dependent manner. TP and TF content were highest ($3017.46{\pm}201.84{\mu}g$ TAE/100 mg dw and $1916.0{\pm}102.95{\mu}g$ QE/100 mg dw respectively) in 3 days after germination (DAG) seedlings compare to 6 and 9 DAG. The contents of rutin and quercetin increased with growing stage of seedlings. However, the chlorogenic acid decreased with increasing growth. Overall, RTTB seedlings can be regarded as a strong source of phenolics and have high possibility for food and nutraceutical application due to their efficient antioxidant properties, higher chlorophyll and phytochemical content.

A Study on Elementary Schoolchildren's Knowledge, One's Value and Consumption Pattern for Rice Foods in Changwon and Gimhae City (창원.김해 지역 초등학생의 쌀음식에 대한 지식, 가치관 및 섭취실태 조사)

  • Yun, Hyeon-Suk;Lee, Mi-Ja;Yang, Han-Ra;Lee, Gyeong-Hye
    • Journal of the Korean Dietetic Association
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    • v.11 no.3
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    • pp.353-364
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    • 2005
  • The informations concerning knowledge, value and consumption pattern for rice foods of elementary schoolchildren (630 boys and 550 girls in 5th or 6th grade) were investigated in Changwon and Gimhae of Gyeongnam province. They were asked based on knowledge, one’s value and intake frequence of rice foods by questionnaries. Menus for 3 days including 2 weekdays and 1 weekend day were taken from 136 students (77 boys and 59 girls) in two Elementary Schools in Changwon and Gimhae to know intake reality of rice product. The purpose of this survey was to find the way of encouraging rice intake and preference which now seemed to be low because of simplified, westernized eating habits, and to provide basic information needed for inheriting and improving our traditional cooked rice centered eating culture. The results are summarized as follows. The knowledge of rice was positively correlated to the one’s value (r=0.365, p<0.001) and the preference (r=0.132, p<0.001), the one’s value was positively correlated to preference (r=0.409, p<0.001). The score of knowledge for rice was 12.8 points out of 20, the girls get points(13.12) significantly higher than the boys (12.53) (p<0.01). One's value about rice foods was 37.35 points out of 50 what is relatively high. They have eaten cooked rice type food for 2.24 times per day. Both boys and girls in Changwon and Gimhae area were having cooked rice type food significantly more during weekdays compared to weekends (p<0.001) by 3 days food record. According the results, we can see the possibility that schoolchildren can be encouraged to eat more rice foods by nutritional education to go with the development of various programs.

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Studies on Rice Quality of Chucheongbyeo Cultivated on Gyeonggi and Other Province (경기지역과 다른 지역에서 생산된 추청벼의 특성에 관한 연구)

  • 이병영;손종록
    • The Korean Journal of Food And Nutrition
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    • v.8 no.4
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    • pp.301-306
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    • 1995
  • This study was carried out to find out rice quality of Chucheongbyeo cultivated on Gyeonggj and other province. Rice type, color difference, amylograph of milled rice and texturograph of cooked rice were not significant between two cultivated region. And fat, protein, Mg and Ca in milled rice were not significant but p, K and Na were significantly different at l% the level between them as 2, 210~2, 420ppwt 1, 304~1, 538ppm and 212~236ppm in Gyeonggi province cultivated rice, and 2, 130~2, 180ppm, 1, 133~1, 180ppm and 197~217ppm in other province, respectively. Also amylose content, alkali distribution and gel consistency were not significant between them.

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Descriptive Sensory Profiles for Cooked Rice by Various Rice Cookers (묘사분석에 의한 취반기기별 밥맛의 관능 프로필)

  • Kim, Dong-Hee;Kim, Hee-Sup
    • Korean journal of food and cookery science
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    • v.23 no.5
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    • pp.777-784
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    • 2007
  • The purpose of this study was to provide the descriptive sensory profiles for cooked rice by various rice cookers, losing descriptive analysis. The rice samples cooked in an electric pressure cooker, and in pressure cooker B, were separated by roasted flavor, sweetness, burnt flavor, cooked rice flavor, moistness, cohesiveness, and chewiness using PCA. The rice cooked in pressure cooker A was harder and rougher, and showed grain wholesomeness, but it still had a cooked and burnt flavor. The rice cooked in a stone cooker and an electric rice cooker was less hard, and showed less grain wholesomeness, but it had a burnt, cooked rice, and less raw rice type of flavor. Finally, the RTE (ready-to-eat) rice showed more grain wholesomeness, and had more raw rice and sour flavor.

Quality characteristics of Takju according to different rice varieties and mixing ratio of Nuruk (쌀 품종과 누룩 배합비율에 따른 탁주의 품질 특성)

  • Im, So-Yeon;Baek, Chang-Ho;Baek, Seong-Yeol;Park, Hye-Young;Choi, Han-Seok;Choi, Ji-Ho;Jeong, Seok-Tae;Shin, Woo-Chang;Park, Heui-Dong;Yeo, Soo-Hwan
    • Korean Journal of Food Preservation
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    • v.21 no.6
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    • pp.892-902
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    • 2014
  • The quality characteristics of Takju were investigated according to the different rice varieties and mixing ratio of Nuruk for the advanced quality of Takju. The yeast was selected by alcohol-producing ability. Then a liquid starter was prepared using brewing fungi (Aspergillus luchuensis 34-1 and Lichtheimia ramosa CN042), and rice Nuruk was manufactured with two rice types (Chucheong and Hanareum). The quality characteristics of Takju were investigated based on the rice type and the mixing ratio of A. luchuensis 34-1 and Lich. ramosa CN042 (1:0, 0:1, 1:1, 1:3). S. cerevisiae Y268 showed an alcohol yield of $9.3{\pm}0.33%$ at a 0.3% concentration in the YPD broth medium, and the rice Nuruk with A. luchuensis 34-1, regardless of rice type, was confirmed to have a higher enzyme activity and physiochemical property than Lich. ramosa CN042. According to the quality analysis of Takju, the physiochemical property was increased for the fermentation period, and the acidity differed by type of fungi and rice. The quality of Takju was changed with the composition differences of organic acid and free amino acid by rice type and mixing ratio. As a result of the sensory evaluation of Takju, the preference for it was increased with the Hanareum and A. luchuensis 34-1, respectively. Thus, this study shows the possibilities for activating the industry of traditional liquor by improving the Nuruk and Takju manufacturing technique.

Heading and Ripening Characters of Major Early Maturing Breeding Rice Lines According to Transplanting Date and Temperature Condition (이앙기 및 온도에 따른 주요 벼 조생종 교배모본의 출수 및 등숙 특성 변화)

  • Hwang, Woon-Ha;Lee, Chung-Kuen;Jung, Jae-Hyeok;Lee, Hyeon-Suk;Yang, Seo-Yeong;Im, Yeon-Hwa;Choi, Kyung-Jin
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.64 no.3
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    • pp.185-192
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    • 2019
  • Early-maturing rice type is cultivated to produce rice before the Korean Thanksgiving Day. We investigated the flowering and ripening characteristics of major breeding lines in early maturing rice type. In Jeonju, field growth days (FGD) from transplanting to heading changed about 3.3 days by 10 days of transplanting days and about 2.5 days by the change of mean temperature during growth period. As the temperature during ripening stage, 1000 brown rice weight was changed 0.2 g, the rice quality of brown and milled rice was changed 5% and 6.5%, respectively. Baegilmi and Kittake showed early heading habit suitable for harvesting before Korean Thanksgiving. Joun and Pecos showed good ripening characteristics under high temperature during the ripening stage. We expect that these characteristics might be useful for breeding new rice cultivars for harvesting before Korean Thanksgiving.

A Study on Dietary Habits and Obesity of the Culinary College Students (조리전공 남녀학생의 식사행태와 비만도에 대한 연구)

  • Kim, Sook-Hee;Joung, Kyung-Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.2
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    • pp.741-746
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    • 2012
  • We studied about dietary habits and obesity of the culinary college students, the average age of male subject was 20.4 years, female 19.8years, male height 174.0cm, female 162.6 cm, body weight of male 71.4 kg, female 60.3 kg. Average body fat% of male was 20.5%, that of female was 30.2%, their average body fat% was at the range of overweight. Most subjects were not satisfied with their body weight and seemed to have ideal body shape as standard and lean. 51.6% of male and 35.2% of female students did not eat breakfast. Male students ratio of eating lunch every day was 41.7%, that of female was 27.0%, male students ratio of eating dinner every day was 54.8%, that of female was 35.5%. They liked to eat meal as rice type and 1-2day per week, they used to eat night snack. The first cause of not eating meal was lack of time. Under stress 56 % of male eated as much as usual, 58.7% of female eated more than usual.

A Study on the Eating Habits and Healthy Eating Behaviors of the University Students in Jeonbuk Area (전북지역 대학생들의 식생활 습관과 건강 관련 식행동에 관한 연구)

  • Min, Kye-Hong
    • Korean journal of food and cookery science
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    • v.29 no.4
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    • pp.399-406
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    • 2013
  • The purpose of this study was to investigate eating habits, healthy eating behaviors, food preference etc. of university students for them to enjoy delightful and healthy campus life and offer preliminary data to the related educational facilities and households for them to make use of the data for making out a menu. We conducted survey aiming at 4-year-course students in Jeonbuk area and survey period was from May 6th of 2013 to May 24th of 2013. The result are as followings. First, food habit evaluation with 10 questions shows that they are inclined to have refreshments, water, vegetables, fruits, grains and protein food often and also eat food blandly. So, we consider this finding is generally positive. Second, through the research on their healthy eating behaviors, we learned their interests in healthy food is average and their selection criteria for healthy food is nutrition value. Information sources for healthy food are mainly TV or mass media and good healthy food in their opinion is Korean food. Third, the findings of food preference show university students like the white rice most but don't like the rice with beans most in terms of rice type. We also found their favorite food is fried rice, favorite noodle is spaghetti, favorite soups are thick beef soups, favorite broth is potato and pork rib broth, favorite stew is kimchi stew, favorite steamed dish is braised short ribs and favorite meat is pork.

Microbial Population, Aflatoxin Contamination and Predominant Aspergillus Species in Korean Stored Rice

  • Oh, Ji-Yeon;Sang, Mee-Kyung;Oh, Jee-Eun;Lee, Ho-Joung;Ryoo, Mun-Il;Kim, Ki-Deok
    • The Plant Pathology Journal
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    • v.26 no.2
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    • pp.121-129
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    • 2010
  • We evaluated microbial populations and aflatoxin production in unhulled and white rice from rice processing complexes of the National Agricultural Cooperative Federation in five regions in Korea and identified three predominant Aspergillus species. Fungal and bacterial populations in rice samples were significantly different between regions in 2007. Aflatoxins were also detected and varied at the levels of 2.45 - 3.43 ng per g unhulled rice grain and 1.29 - 2.09 ng per g white rice grain. Unhulled rice generally detected higher level of aflatoxins than white rice regardless of sampling regions; however, no significant differences were found in Anseong and Cheonan in 2005 and Cheonan and Gimpo in 2007. Aflatoxin production between sampling regions was not different regardless of rice type and sampling year. Although the fungal diversity was highly distinct from region to region, three Aspergillus isolates were predominant in the rice samples; thus, representative isolates AC317, AF57, and AF8 were selected and identified based on their morphological and molecular characteristics. Consequently, isolates AC317, AF57, and AF8 were identified as A. candidus, A. flavus, and A. fumigatus, respectively. These fungi can produce mycotoxins that are harmful for consumers and thus it is important to detect and reduce the population of storage fungi in rice.

Puffability with Hulling steps and Rice Varieties by Hot Air Puffer (벼품종과 도정단계에 따른 열풍 팽화 특성)

  • Kim, Joong-Man;Kim, Dong-Han;Baek, Seung-Hwa;Choi, Yong-Bae;Han, Sung-Hee
    • Applied Biological Chemistry
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    • v.37 no.2
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    • pp.72-76
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    • 1994
  • Effects of rice type (unhulledy, brown, and polished rice), varieties, moisture content, and shape (length and diameter), on rice of puffability by hot air were investigated. The puffability of unhulled rice was the highest among them. In addition, relative crystallinities of puffed paddy by hot air puffer ($55{\pm}5\;sec.$, at $210{\pm}5^{\circ}C$) were lower than those of brown and polished rice. The puffability of Wongbongolchalbyeo, glutinous rice, and Jinjubyeo, non-glutinous rice, was good, respectively. Optimum moisture content of unhulled rice for maximum puffed volume was in the range of $10{\sim}12%$ (w/w).

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