• Title/Summary/Keyword: prepared foods

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The Sensory Characteristics of Tangmyon as Affected by Production Methods and the Contents of Corn Starch (제조방법 및 옥수수 전분함량에 따른 당면의 관능적 특성)

  • Park, Ok-Jin;Kim, Kwang-Ok;Kim, Sung-Kon
    • Korean Journal of Food Science and Technology
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    • v.22 no.7
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    • pp.721-723
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    • 1990
  • The sensory properties of commercial Tangmyons(starch noodle) prepared with dropping, extrusion-dropping and extrusion-cooking methods were evaluated. In addition, the effects of corn starch on Tangmyon were also examined. Tangmyon prepared with extrusion-cooking had greater intensities in color, gloss, clarity, adhesitiveness, extensibility, slickness and gumminess, except stiffness and hardness, compared to others. Increment of corn starch addition decreased the sensory attributes of Tangmyon, except stiffness and hardness.

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Effects of Extrusion-Texturization on Defatted Soy Flour for Soy Sauce Fermentation (압출성형기에 의한 전처리가 탈지대두분의 장유 제조특성에 미치는 영향)

  • Oh, Kyeong-Keun;Jung, Heon-Woong;Park, Ji-Yong;Lim, Jae-Kag;Kim, Jae-Cherl
    • Korean Journal of Food Science and Technology
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    • v.25 no.1
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    • pp.1-8
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    • 1993
  • Extruded defatted soy flour (DSF) with twin screw extruder was compared with steam treated DSF for soy sauce fermentation. Independent variables of response surface methodology (RSM) for extrusion were barrel temperature $(145{\sim}165^{\circ}C)$, feed moisture content $(25{\sim}35%)$, and feed rate $(20{\sim}30\;kg/hr)$. Extrusion conditions for production of the extrudates having highest water absorption capacity, lowest bulk density and highest expansion ratio were obtained by regression analysis of each dependent variable. Electron photomicrographs revealed significant increase of porosity inside the koji made from extruded DSF. Therefore, growth of fungi inside the koji made from extrudates of DSF was accelerated to achieve higher activities of protease, ${\alpha}-amylase$, and glucoamylase compared to the koji made from steamed DSF. Although amino acid composition of soy sauces prepared from two different DSF did not show any significant difference, the content of free amino acids in soluble nitrogen compounds was higher $(13%{\pm}2)$ in soy sauce made from extruded SDF. During the whole period of fermentation color of soy sauce made from extrudates of DSF was darker. Sensory evaluation did not reveal any serious off-odor and off-taste in the soy sauce fermented from extruded DSF.

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Strategies to Reduce Phytate Content in the Korean Diet

  • Lee, Jee-Min;Li, Sun-Hee;Joung, Hyo-Jee;Paik, Hee-Young
    • International Journal of Human Ecology
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    • v.4 no.1
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    • pp.25-34
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    • 2003
  • High dietary phytate is a known factor in reducing the bioavailability of minerals such as zinc and calcium which are already chronically low in the Korean diet. This study was conducted to develop methods for reducing dietary phytate through the addition of phytate and/or the substitution of high phytate foods with low phytate foods. Ten units of phytase per 100g of uncooked brown rice were added to brown rice gruel resulted in a 16.2% phytate reduction after a 3-hour incubation period; an 18.2% reduction was produced after a 6-hour incubation period. The addition of ten units of phytase per 100g of soybean curd residue at 45$^{\circ}C$, followed by refrigeration for 3 hours, resulted in a 19.1% phytate reduction. The addition of 20 units of phytase under the same conditions reduced phytate content by 24.6%. In this study, two typical Korean meals consisting of legumes and unrefined cereals were prepared as high phytate meals; these were then compared to low phytate meals that had been prepared by treating the foods with phytase and substituting unrefined with refined cereals (i.e., brown rice with white rice, whole wheat bread with white bread). The phytate content of the two high phytate meals was 1878.2mg and 1811.8mg. After the addition of phytase and the food substitution, the phytate content of the low phytate meals was reduced to 788.9mg and 606.0mg. The phytate to zinc molar ratio of high phytate diets was 22.4 and 21.3 and 9.4 and 7.9 for the low phytate meals. These results indicate that the nutritional status of Koreans in terms zinc and other minerals can be improved by phytate reduction. This can be accomplished through the change of milling process for some cereals and/or the enzyme treatment of some high phytate food items.

Effects of Pretense Treatment of Soy Milk on Acid Production by Lactic Acid Bacteria and Quality of Soy Yogurt (두유(豆乳)의 단백질분해효소 처리가 젖산균의 산생성(酸生成)과 대두요구르트의 품질에 미치는 영향)

  • Kim, Kyung-Hee;Bang, Il-Ryung;Ko, Young-Tae
    • Korean Journal of Food Science and Technology
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    • v.21 no.1
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    • pp.92-99
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    • 1989
  • The soy milk prepared from soy protein concentrate was treated with pretense of various concentrations. Growth and acid production by Lactobacillus acidophilus or L. bulgaricus in soy milk containing partially hydrolyzed protein were investigated. Sensory evaluation of soy yogurt beverages prepared from pretense treated soy milk was also performed. The treatment of soy milk with pretense markedly enhanced acid production by lactic acid bacteria, particularly by L. acidophilus, whereas pH and number of viable cells were not .affected by pretense treatment. Protease treatment of 15 minutes greatly enhanced acid production by lactic acid bacteria, but further treatment up to three hours did not affect the acidity markedly. The sensory evaluation showed that overall acceptability of soy yogurt beverages was slightly improved when soy milk was treated with pretense of 0.1%. The amount of non-protein nitrogen was considerably increased by pretense treatment of 15 minutes and it reached the maximum value by treatment of two hours.

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Manufacture of Yogurt from Soy Protein Concentrate (농축대두단백(濃縮大豆蛋白)을 이용한 요구르트의 제조)

  • Yoo, Ji-Chang;Lim, Sook-Ja;Ko, Young-Tae
    • Korean Journal of Food Science and Technology
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    • v.16 no.2
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    • pp.143-148
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    • 1984
  • The effects of various nutrients added to soy protein concentrate (SPC)-yogurt on the growth of Lactobacillus acidophilus and the flavor of SPC-yogurt were investigated. Soy milk was prepared from SPC (4.2% as protein) and various nutrients. One hundred ml of the prepared soy milk was given proper heat treatment, inoculated with 2.5ml of 24 hr-old culture, and incubated for 24 hr at $37^{\circ}C$. The growth of L. acidophilus was estimated from viable cell counts, titratable acidity and pH. The growth curve obtained from the experiment suggested that the log phase ended after 6 hr and the stationary phase ended after 30 hr. Glucose and fructose greatly enhanced the acid production by L. acidophilus. The optimum concentration of these two sugars in the media was approximately 3% each. Yeast extract greatly stimulated the acid production by L. acidophilus, and the optimum concentration of this additive was approximately 0.5%. Higher concentration of SPC resulted in slightly higher acidity in soy yogurt.

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A Study on the Comparison Among Korea, China and Japan Food Cultures (II) - From 14C to 19C, on the Daily foods - (한(韓).중(中).일(日)의 식생활문화(食生活文化) 비교연구(比較硏究) (II) - $14{\sim}19$세기, 일상식품(日常食品)을 중심(中心)으로-)

  • Ahn, Myung-Soo
    • Journal of the Korean Society of Food Culture
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    • v.12 no.3
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    • pp.353-364
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    • 1997
  • A study was carried out to compare the daily foods which were eaten during $14{\sim}19$ century among Korea (Chosun dynasty), China (Ming, thing dynasty), and Japan (Muromachi, Edo era). Specially, in Ming, Ching dynasty, Noodles and dumpling were cooked very often and in Muromachi, Edo era, many kinds of beans were used so much, and there were many kinds of steamed rice to compare with Korea and China. Also, in Japan at these era Woodong, Morisoba, and Somyen were used as favorite foods harbitually. 1. The crops were used as staple foods in three countries such as steamed rice, gruel, noodle, dumpling, rice cake etc. commonly. 2. In Chosun, a roe deer, deer, antelope, and wild boar were more favoite dishes than cow, chicken, and dog, generally people enjoyed to eat pork and chicken. In Ming Ching, pork, chicken, goose, dove, lamb, ass, and duck were used as food materials, also wild animals such as deer, rabbit, and monkey etc. were used. In Muromach era, wild animal as racoon dog, otter, deer, antelope, bear, were used as food materials, in early Edo era (Yayoi and Momoyama), beef and pork were used as daily foods but they were eaten decreasingly in Edo era. So in Japan at those era, the dishes prepared of fishes were more than those of meats. For example, Sushi was made from that time, people all over the world are enjoying to have Sushi at present time. 3. Also in these era, many kinds of vegetables and fruits were used in three countries, and new kinds of vegetables and fruits were introduced from foreign countries, for example, red pepper, pumpkin, sweet potato, potato in Korea, corn, sweet potato, red pepper in China, and water melon, pumpkin, corn, red pepper, marmellow, sweet potato, sugar beet in Japan.

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The Effect of Knowledge about Foods on the Cooking Method (식품에 대한 지식이 조리방법에 미치는 영향에 관한 조사연구)

  • Park, Yun-Chung;Cho, Shin-Ho;Lee, Hyo-Gee
    • Korean journal of food and cookery science
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    • v.6 no.1
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    • pp.41-51
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    • 1990
  • A special form of questionaire was prepared and distributed to 502 housewives in seoul from Feb. 8th to 22nd in 1989. The results were as follows: In Cooking methods, they tended to follow in the steps of their mother, and it took about half an hour or an hour to prepare a meal. They cooked fried foods once or twice a month. Whenever they fried foods they need new oil. Followings were details of cooking method mainly used by housewives. Fishes were tended to be roast, vegetables to be dressing and seasoning. Highly milled boiled rice was best preferred as the cheif food, and it was cooked by following procedure; First rice was washed, and steeped in water for the time being. Next, the water was poured out and water was filled again, then rice with the water was boiled. Fish Chige was cooked in the way that fish was put into the boiled soup. Fermented sao-bean paste Chige was cooked using water in which rice had been washed. Hard-boiled beef with soy sauce was made using the method that soy sauce was properly poured after beef was boiled. A Spinach was boiled shightly with salty water. In view of those results, there were many cases that housewives did not only utilize their knowledge about foods in real dietary life, but also fell short of endeaver to do so. They chiefly made use of the cooking methods instructed from their mother or husband's mother. In conclusion, in order to illuminate housewives to have an exact nutritional knowledge about foods and cooking methods getting out of the loss of nutritions, nutritional education program must be provided for housewives.

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A Qualitative Study on Needs of Convenience Meal from the Low-income Female Elderly (질적연구방법론을 이용한 여성노인의 식품선택 속성 및 제공 식사(편이식) 요구도 조사)

  • Jang, Ji-Eun;Kim, Ji-Na;Park, Soojin;Shin, Weon-Sun
    • Journal of the Korean Society of Food Culture
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    • v.29 no.2
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    • pp.163-177
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    • 2014
  • This study aimed to investigate the perception, consumption, and acceptability of convenience mealsin low-income female elderly attending a lunch program at a community well fare center. Using in-depth interviews, qualitative data were collected 11 elderly females ($62.5{\pm}11.2y$) living in Seoul. Participants tried to eat various foods in small-portionsat home, although they ate out what they were offered. Elderly females preferred lunch box-type meals containing a bowl of rice served with toppings, gruel, or Bibimbop due to the growing unavailability of cooking or preparing a meal. Side-dish type convenience mealswere also preferred among elderly females since boiled rice can be easily prepared according to individual preferences. In addition, participants preferred healthy foods. Convenience meal planning and production, appropriate kinds of foods, cooking methods, menus, and packaging should be selected based on the elderly's functional atrophy in chewing, swallowing, digestion, and metabolic diseases. Furthermore, food preferences and comfort foods among the elderlyneed to be identified and characterized. Therefore, more information, including bite size, cutting size, and food texture, should be provided to understand and develop convenience meals for the elderly.

A study on the Food Behavior and Factors Influencing the Food Behavior of the Elderly Living in Incheon (인천광역시 노인의 식생활과 식생활 관련 인자 연구)

  • Chyun, Jong-Hee;Choe, Eun-Ok;Woo, Kyung-Ja
    • Journal of the Korean Society of Food Culture
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    • v.17 no.4
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    • pp.424-434
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    • 2002
  • Food habit, eating-out pattern, smoking and drinking habits of 814 elderly (aged over 60) living in Incheon were surveyed by questionnaire. The ratio of the elderly who have balanced meals at moderate amount was slightly higher in urban area. Urban elderly tended to have mild foods, while rural elderly preferred hot and salty foods. Score for food habit was higher in urban elderly and there was no difference between male and female elderly. Most urban elderly had their meal at the public facilities for elderly, while most rural elderly used general restaurant and public room for elderly. Korean foods were the most favorite menu when ate out. Ratio of elderly who have difficulties in chewing was 21.2 and 39.6% for urban and rural elderly, respectively. Many elderly, especially more than 70% of female elderly, prepared the meals for themselves. Rural elderly smoked and drank more than urban elderly and male elderly did more than female elderly.

Preferences of Commercial Elderly-Friendly Foods among Elderly People at Senior Welfare Centers in Seoul (고령자 대상 식생활 및 시판 고령친화식품 기호도 조사 - 서울시내 노인복지시설 이용자 중심으로 -)

  • Jang, Hyo-Hyun;Lee, Seung-Joo
    • Journal of the East Asian Society of Dietary Life
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    • v.27 no.2
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    • pp.124-136
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    • 2017
  • This study was performed to investigate the perception and preferences regarding commercial universal design foods (UDF) made with different ingredients. A one-to-one interview was used for data collection and the survey was conducted on 41 elderly people (over age 65; males: 11, females: 30) attending senior welfare centers in Seoul. Twelve UDF samples were collected, which were widely sold in Japan. Majority of respondents prepared meals (53.7%) and ate alone (43.9%), respectively. The preferred cooking level of elderly food was "ready to eat (RTE)" (43.9%) or "ready to heat (RTH)" (43.9%) rather than fresh cut product. In most, the elderly had no problem with chewing-action (90.2%). Generally, food ingredients such as grain, meat, seafood and fruits showed higher preference than vegetable and nuts. Among 12 UDF samples, pumpkin gratin (4.17) and peach flavored jelly (4.27) showed higher preferences among tested samples on a 5-point facial hedonic scale. There were no significant differences in overall preferences of all samples by difficulty in terms of chewing and swallowing of respondents. Demi-glace sauce hamburger and pot sukiyaki were more preferred as age increased (p<0.05).