• Title/Summary/Keyword: prepared foods

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Textural Properties of Gelatinized Model Food system (젤라틴화 된 모형식품의 조직특성)

  • Chang, Kyu-Seob;Lee, Seong-Ku;Chang, Dong-Il;Yun, Han-Kyo
    • Korean Journal of Food Science and Technology
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    • v.20 no.3
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    • pp.310-316
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    • 1988
  • The gelatinized model food system were prepared by combining moisture, starch and protein, and the textural properties of their gels of different temperatures and times of heating were investigated by the use of Instron Universal Testing Machine. The hardness, springiness, cohesiveness, gumminess and chewiness of model foods had a high correlation with solid content and the regression equations between the hardness of model foods and moisture content heated for 20min. at $80{\circ}C$ were as follows; $H(PS_4)=18.6405-3.8201M+0.1959M^2,\;H(P_1S_1)=244.7933-5.692M+0.0332M^2,\;H(P_4S)=693.0292-16.6884M+0.1005M^2$, The correlation coefficients were $0.996^{**},\;0.998^{**}\;and\;0.998^{**}$, respectively. Total correlations between textural parameters and temperature and heating times were different according to model foods. The correlation between textural parameters was proportional to protein foods, but the hardness and cohesiveness of starch foods showed the relationship of inverse proportion. Under low solid content, the parameters of model foods appeared to decrease as protein content increased. Under high solid content, the parameters of protein foods were higher than those of starch foods above some level of protein content. The regression equation between the hardness and protein content heated for 20min. at $80^{\circ}C$ was as follows; Hardness(20%)=5.6858-13.5670P+$9.7758P^2$ and the correlation coefficient was $0.95^{**}$.

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Energy intake from commercially-prepared meals by food source in Korean adults: Analysis of the 2001 and 2011 Korea National Health and Nutrition Examination Surveys

  • Choi, Injoo;Kim, Won Gyoung;Yoon, Jihyun
    • Nutrition Research and Practice
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    • v.11 no.2
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    • pp.155-163
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    • 2017
  • BACKGROUND/OBJECTIVES: The commercial foodservice industry in Korea has shown rapid growth recently. This study examined Korean adults' consumption of commercially-prepared meals based on where the food was prepared. SUBJECTS/METHODS: Data from a 24-hour dietary recall of the 2001 and 2011 Korea National Health and Nutrition Examination Surveys were analyzed. A total of 10,539 subjects (n = 6,152 in 2001; n = 4,387 in 2011) aged 19-64 years were included for analysis. Commercially-prepared meals were classified into four food source groups based on where the food was prepared: Korean restaurants, Chinese/Western/Japanese restaurants, fast-food restaurants, and retail stores. Subjects' energy intake, including the amount and proportion of calories, was examined for each food source. The analysis was also conducted by gender for age-stratified groups: 19-29, 30-49, and 50-64 years old. RESULTS: Korean adults' energy intake from commercially-prepared meals increased in the amount of calories (551 kcal to 635 kcal, P < 0.01), but not in the proportion of daily calories (27% to 28%) from 2001 to 2011. The most frequent food source of commercially-prepared meals was Korean restaurants in both years. The amount and proportion of calories from retail stores increased from 83 kcal to 143 kcal (P < 0.001) and from 4% to 7% (P < 0.001), respectively, during the same period. Males aged 30-49 years (34%) and females aged 19-29 years (35%) consumed the highest proportion of daily calories from commercially-prepared meals in 2011. CONCLUSIONS: Korean adults consumed about one-fourth of their energy intake from commercially-prepared meals. In particular, males aged 30-49 years and females aged 19-29 years consumed more than one-third of their energy intake from commercially-prepared meals. Korean restaurants played a significant role in Korean adults' energy intake. Retail stores increased influence on Korean adults' energy intake. These results could be useful for developing health promotion policies and programs.

Differences in Nutrient Intake with Homemade versus Chef-Prepared Specific Carbohydrate Diet Therapy in Inflammatory Bowel Disease: Insights into Dietary Research

  • Morrison, Alex;Braly, Kimberly;Singh, Namita;Suskind, David L.;Lee, Dale
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.24 no.5
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    • pp.432-442
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    • 2021
  • Purpose: The aim of this study was to evaluate the nutrient content consumed by children and adolescents on home-prepared versus chef-prepared specific carbohydrate diets (SCD) as therapy for inflammatory bowel disease (IBD). Methods: Dietary intake of two cohorts with active IBD initiating the SCD over 12 weeks was assessed. The home-prepared cohort received detailed guidance from dietitians on implementation of the SCD. The chef in the other cohort was knowledgeable in the SCD and prepared meals from a fixed set of recipes. Data from 3-day diet diaries at 4 different time points were collected. US Recommended Daily Allowances (RDA) were calculated for macronutrients, vitamins, and minerals. Results: Eight participants on the homemade SCD and 5 participants on the chef-prepared SCD were included in analysis. Mean % RDA for energy intake was 115% and 87% for homemade and chef-prepared groups (p<0.01). Mean % RDA for protein intake was 337% for homemade SCD and 216% for chef-prepared SCD (p<0.01). The homemade SCD group had higher mean % RDA values for vitamin A and iron, while the chef-prepared SCD group had higher intake of vitamins B1, B2, D, phosphorus and zinc (p<0.01 for all). Conclusion: The SCD implemented homemade versus chef-prepared can result in significantly different intake of nutrients and this may influence efficacy of this dietary therapy. Meal preparation dynamics and the motivation of families who pursue dietary treatment may play an important role on the foods consumed and the outcomes on dietary therapy with the SCD.

Comparative Evaluation of Physicochemical Properties of Pine Needle Powders Prepared by Different Drying Methods

  • Chung, Ha-Sook;Lee, Jun Ho
    • Preventive Nutrition and Food Science
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    • v.20 no.2
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    • pp.143-147
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    • 2015
  • Systematic study of how different drying methods, namely hot-air drying, vacuum-drying, and freeze-drying, affect color, browning index, degree of rehydration, water solubility, and vitamin C content is critical for utilizing pine needle powders (PNP) as a novel ingredient in functional foods. Samples prepared by vacuum-drying showed a significantly higher $L^*$-value, whereas higher $a^*$- and $b^*$-values were detected in the hot-air dried samples (P<0.05). The browning index was significantly higher in samples prepared by vacuum-drying compared to samples prepared by freeze-drying (P<0.05). Freeze-dried PNP exhibited a significantly higher degree of rehydration than hot-air dried samples (P<0.05). Water solubilities of freeze-dried and hot-air dried samples were significantly higher than that of vacuum-dried sample (P<0.05). Vitamin C was less destroyed during freeze-drying compared to hot-air or vacuum-drying (P<0.05). Freeze-dried samples displayed a clear porous structure and appeared to have a bigger space, whereas hot-air dried samples showed lower porosity than vacuum and freeze-dried samples.

Volatile Aroma Compounds in Ice Cream Prepared from Lactic Fermented Egg White Food Added with Cream (크림첨가 난백젖산균발효식품으로 만든 아이스크림의 휘발성향기성분)

  • Ko, Young-Tae;Kim, Tae-Eun;Kang, Jung-Hwa
    • Korean Journal of Food Science and Technology
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    • v.33 no.3
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    • pp.373-377
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    • 2001
  • Egg white mix (EWM) added with different ratios of cream $(10{\sim}15%,v/v)$ was fermented with Lactobacillus acidophilus (KCTC 2182) and changes of volatile aroma compounds during fermentation for 21 h were investigated. The amount of volatile aroma compounds between pre-fermented EWM, 15 h-fermented EWM, soft ice cream prepared from fermented EWM, and hard ice cream prepared from soft ice cream was compared. The results were as follows: (1) The amount of ethanol increased gradually until 9 h and increased rapidly to maximum value at 12 h and then decreased rapidly. The amount of acetone at 12 h was slightly higher, but it was not changed markedly during fermentation. Diacetyl was detected at 3 h and increased gradually to maximum value until 15 h and then decreased slightly. The amount of butanol was not changed markedly during fermentation. Acetoin was detected at 3 h and increased rapidly until 15 h and then increased gradually. (2) The amount of acetone, ethanol, diacetyl and butanol of pre-fermented sample, 15 h-fermented sample, soft ice cream and hard ice cream increased in proportion to the amount of cream added to EWM. However, the amount of butanol was relatively constant regardless of added cream ratio. The amount of volatile aroma compounds of soft ice cream was higher than that of other samlples, while that of pre-fermented sample was lower than that of other samples. Diacetyl and acetoin were not detected in pre-fermented sample.

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Research on the Food Habits of Housewives of Korean Students Residing in a Southern Region of Texas, U.S.A. (미국 Texas 일부 지역에 거주하는 한국 유학생 부인들의 식생활습관에 관한 연구)

  • 김은실;송청락;정복미;심영자
    • Culinary science and hospitality research
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    • v.9 no.2
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    • pp.11-21
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    • 2003
  • The purpose of this study was to research on the preparing fermented foods and food habits of Korean women in Texas U. S. A. The preparing method of fermented foods and food habits of Korean housewives whose husbands are studying at the various universities in Houston, Texas are surveyed. The analysed results indicated were as follows ; 1. 64.4% of women were in the thirties at their age, those in twenties 29.7%. 75.2% of subject graduated college. Period of residence in America were 52.5% under 3yr, 25.7% over 5yr. The respondents were aged twenties(29.7%) to thirties(64.4%) who have graduated from college(75.2%) or graduate school(24.8%) and have had the residence period of less than three-(52.5%) to more than five years(25.7%). 2. The kind of cuisine chosen for dinner were Korean style food. The most considerable person when preparing menu were husband. 48.51% of those in age were 3∼39yr(p < 0.1). 60.40% of the response graduated college(p < 0.1). The Korean-style foods overwhelmed over western ones in their frequency for dinner(82.2% vs. 17.8%). The person most considered for choosing menu was their husbands as responded by the majority groups of aged thirties(48.5%), college graduates(60.4%) and residence period of less than three years(42.6%). They satisfied comparatively when they prepared the meal (p < 0.1). 55.4% of the response learned cooking method from neighbor, 39.6% of remainder studied from cuisine book, newspaper, magazine, TV. They satisfied comparatively for the preparation of the meal(56.4%) and have learned the new methods of cooking from neighborhoods(55.4%) or cuisine book, newspaper, magazine and TV(39.6%). 3. The frequency of eating-out mostly had once a month. 30.69% of response were 30∼39yr(p < 0.1). 33.66% of subjects lived under 3yr in America. The frequency of eating-out mostly had once a month. 30.69% of response were 30-39yr(p < 0.1). 33.66% of subjects lived under 3yr in America. Eating-out once a month occupied 30.7, 33.7, and 20.7% of the selected group of aged thirties, college graduates, and residence periods of less than three years, each respectively. The type of food selecting eating-out were western style. 38.31% of them were 30∼39yr(p < 0.1). 39.60% of them graduated college(p < 0.1). 29.70% of them lived under 3yr in America. For eating-out menu, the western-style foods were most favored by the groups of aged thirties(38.3%), college graduates(39.6%), and residence periods of less than three years(29.7%). 4. 50.5% of subject had beef once three days, 23.8% of the response had pork once two weeks, 27.7% of subject ate chicken once two weeks, 34.7% of the response enjoyed fish once a week. Eating animal foods once three days for beef(50.5%), once two weeks for pork(23.8%) and chicken(27.7%), and once a week for fish(34.7%) were most frequent. 5. Korean traditional fermented food were mostly enjoyed in order of kanjang(91.1 %), kochujang(87.2%), fermented fish(85.1%), deonjang(81.2%), jang-a-chi(76.2%). 81.2% of subject used prepared-food by themselves. 56.4% of response made kimch at home. Among Korean traditional fermented foods, kimchi(56.4%) and prepared side dishes(81.2%) were provided at home while kanjang(91.1%), kochujang(87.2%), fermented fish(85.1%), deonjang(81.2%), and jang-a-chi(76.2%) were mostly purchased from stores.

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Food Utilization Status and Perceived Performance of food Management of School Food Service in the Kyunggi Area (경기지역의 학교 급식 식재료 사용 현황 및 관리 직무 수행도에 관한 연구)

  • Shin, Mee-Hye;Kang, Kun-Og
    • Journal of the East Asian Society of Dietary Life
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    • v.18 no.4
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    • pp.592-600
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    • 2008
  • The perceived performance of food management and the food utilization status of school food service managers in nine sectors of management in the Kyunggido area were evaluated[ED highlight - please ensure this is correct]. The results of this study revealed that 84.5% of the service managers used domestic food and $20{\sim}40%$ used organic food, with an average of 80% using one of these types of foods. In addition, the average use of pre-handling food varied widely when compared to other food items[ED highlight - very confusing, please ensure my changes do not alter your intended meaning] Additionally, most respondents used frozen food (72.0%), processed food (83.9%), and substitute food (53.4%), for the average of 20%,[ED highlight - I cannot infer your intended meaning here, what is an average of 20%? Please clarify]; however, 40.6% did not use any food substitutes. The most common reason given for using pre-handled[ED highlight - do you mean pre-packaged or pre-prepared? Please clarify] food was to save time (32.2%), whereas frozen foods were most often used to help with menu organization (37.5%). Additionally, the respondents most common reason for using processed food was its high acceptability (47.8%), while substitute foods were most often used due to non suitable foods beingreturned (75.3%). Among the varieties of food that were used, those that are easily obtained and cooked were used the most. Furthermore, the mean score for the perceived performance of food sanitary management was $4.51{\pm}0.425$ (based on the 5-point Likert scale). Finally, it was generally believed that the overall food management well executed, but that more active management of unsatisfactory food suppliers is required[ED highlight - please ensure my changes do not alter your intended meaning].

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Recipe Standardization and Nutrient Analysis of Local Foods of Cheollabuk-do Province(The Second Report) (전라북도 향토음식의 조리법 표준화 및 영양성분 분석(제 2 보) - 추어탕, 다슬기탕, 민물고기매운탕, 어죽, 백합죽-)

  • 주종재;신미경;권경순;윤계순
    • Korean Journal of Community Nutrition
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    • v.6 no.2
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    • pp.250-258
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    • 2001
  • Five representative local foods of Cheollabuk-do Province such as chuotang, ochuk, baekhapchuk, dasulgitang and minmulgokimaeuntang were subjected to recipe standardization and nutrient analysis. To derive a standard recipe, first a test recipe was prepared with the consideration of information obtained from literature survey, personal interview and survey of restaurant recipe. This test recipe was modified three times after sensory evaluation. Then the modified test recipe was accepted as the standard recipe when all characteristics of food was assessed over 5 points and the percentage of judges who gave a score over five exceeded 70% in seven-point hedonic scale. Actually, all characteristics of each food were judged as "satisfactory". Nutrient analysis was performed in food cooked according to the decided standard recipe. In general, it appeared that energy content was rather low. However protein contents in chuotang, ochuk and minmulgokimaeuntang were higher than the recommended value per meal. Vitamin A, vitamin C, vitamin B$_1$, vitamin B, niacin, calcium, phosphorus and iron were rich in chwotang and minmulgokimaeuntag. Onhuk contains plenty of vitamin C, vitamin B$_1$, vitamin B$_2$and the contents of vitamin A, vitamin B$_1$, and niacin in baekhapapchuk were over the recommended values per meal. The foods contained large percentage of aspartic acid and glutamic acid, and major essential amino acids appeared to be leucine and lysine. On the other hand, major fatty acids were oleic acid, linoleic acid and plamitic acid. Among them the content of oleic acid was the highest in chuotang, ochuk and baekhapchuk, whereas linoleic acid and palmitic acid were the most rich fatty acids in baekhapchuk and dasulgitang respectively.

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Estimation of curcumin intake in Korea based on the Korea National Health and Nutrition Examination Survey (2008-2012)

  • Kwon, Youngjoo
    • Nutrition Research and Practice
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    • v.8 no.5
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    • pp.589-594
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    • 2014
  • BACKGROUND/OBJECTIVES: Turmeric and its active component curcumin have received considerable attention due to their many recognized biological activities. Turmeric has been commonly used in food preparation and herbal remedies in South Asia, leading to a high consumption rate of curcumin in this region. However, the amount of curcumin in the Korean diet has not yet been estimated, where turmeric is not a common ingredient. SUBJECTS/METHODS: This study utilized the combined data sets obtained from the Korea National Health and Nutrition Examination Survey conducted from 2008 to 2012 in order to estimate the curcumin intake in the Korean diet. The mean intake of curcumin was estimated from the amount of curcumin-containing foods (curry powder and ready-made curry) consumed using reported curcumin content in commercial turmeric and curry powders. RESULTS: Only 0.06% of Koreans responded that they consumed foods containing curcumin in a given day, and 40% of them were younger than 20 years of age. Curcumin-containing foods were largely prepared at home (72.9%) and a significant proportion (20.4%, nearly twice that of all other foods) was consumed as school and workplace meals. The estimated mean turmeric intake was about 0.47 g/day corresponding to 2.7-14.8 mg curcumin, while the average curry powder consumption was about 16.4 g, which gave rise to curcumin intake in the range of 8.2-95.0 mg among individuals who consumed curcumin. The difference in estimated curcumin intake by using the curcumin content in curry powder and turmeric may reflect that curry powder manufactured in Korea might contain higher amounts of other ingredients such as flour, and an estimation based on the curcumin content in the turmeric might be more acceptable. CONCLUSIONS: Thus, the amount of curcumin that can be obtained from the Korean diet in a day is 2.7-14.8 mg, corresponding to nearly one fourth of the daily curcumin intake in South Asia, although curcumin is rarely consumed in Korea.

Market goods substitution of housework and the determinants on it in the domain of food: Focused on the married female home-based workers (기혼여성 재택근무자의 식생활영역에서 가사노농 상품대체와 그 영향요인에 관한 연구)

  • Kim, Hyo-Chung;Kim, Mee-Ra
    • Journal of the Korean Society of Food Culture
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    • v.15 no.4
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    • pp.259-268
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    • 2000
  • The purpose of this study was to describe the levels of market goods substitution of housework and find out the determinants on it in the domain of food among married female home-based workers. The data were collected from 169 married female home-based workers in Pusan and Kyungnam province, by self-administered questionnaires. Frequencies, percentiles, Cronbach's alpha, Pearson's correlations, and multiple regression were used to analyze the data. In the convenience foods, frozen foods had the highest substitution level, whereas prepared stew had the lowest. The substitution level of Korean traditional storage foods was the middle. And in dining-out service, the substitution level was mostly high: the level of delivery service was higher than that of dining-out. Compared to the previous research, these results showed that market goods substitution tended to increase, and its level in the domain of food will promote continually over time. The variables affecting the substitution level of convenience food were the number of family members, occupation, the existence of elderly/disabled person in the family, sex-role attitude, and weekly hours at home-based work. The substitution level of Korean traditional storage foods was influenced by sex-role attitude, occupation, education, monthly household income, and the existence of elderly/disabled person in the family. The significant variables affecting the substitution level of dining-out service were weekly hours at home-based work, the number of family members, occupation, monthly household income, education, and sex-role attitude.

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