• 한국식품조리과학회지
• /
• 제18권3호
• /
• pp.309-318
• /
• 2002

The purposes of this study were to estimate the microbial and physicochemical quality of vegetable dishes without heat treatment such as sengchae, a traditional Korean vegetable dish, and to suggest a safer method of preparation. Platycodon sengchae and vegetable salad were monitored from the ingredient to final product before serving while storing at different temperature (4, 10$^{\circ}C$) and period (1, 2, 4, 7 days) at foodservice establishments. The results showed that the storage temperature pH, Aw, moisture content, and microbial loads are the important factors affecting the quality of vegetable dishes without heat treatment, and a thorough hygienic management from the purchase to the preparation of the dishes is needed to secure the quality of prepared foods in the foodservice establishments.

• 한국식품조리과학회지
• /
• 제9권2호
• /
• pp.88-93
• /
• 1993

Semi-prepared frozen muscle foods purchased from local industry were tested for lipid oxidation. The effects of various storage conditions, cooking methods, defrosting methods and reheating methods on rancidity were examined using TBA assay and sensory evaluation. TBARS values were increased faster in cooked samples than in uncooked ones during storage periods. During refrigeration of cooked samples, TBARS values were increased significantly for 15 days (p<0.001). In defrosting experiments, refrigerated defrosting was proven to be better compared with room temperature or microwave defrosting (p<0.05). For overall explanation, stepwise regression analysis was done and the results are in this order: storage conditions, cooking methods, moisture content, and lipid content. Using these 4 variables, TBARS values could be explained by 40~53%.

• 한국미생물·생명공학회지
• /
• 제49권3호
• /
• pp.320-328
• /
• 2021

High GABA-enriched yeast extract, for various nutritionally and pharmaceutically important functional foods, was prepared using a novel isolate of Debaryomyces hansenii JBCC541. Under optimized conditions, GABA conversion rates are significantly enhanced up to 7.55 g/l by D. hansenii JBCC541, increasing their synthesis yield 40 times. The total amino acid content of the prepared yeast extract was 10733.86 mg/l (257.36 mg/g), consisting of alanine, lysine, glutamine, leucine, and valine as the primary amino acids. The GABA content was significantly enhanced up to 6790 mg/l (162.80 mg/g) in the presence of glutamic acid, with approximately 10-fold higher GABA production. Flavor amino acids were also highly enhanced, indicating that the prepared yeast extract might be useful for preparing various functional and sensuous foods. Our results were promising as a GABA-enriched yeast extract preparation tool ensuring a suitable food material level with the potential for functionally enhanced food industrial applications.

• Preventive Nutrition and Food Science
• /
• 제7권2호
• /
• pp.207-214
• /
• 2002

Food preference of children may be determined by various lifestyle and environmental factors. This study evaluated the effect of rural or urban inhabitance, cooking methods, and frequency of exposure to vegetable dishes on the acceptance of vegetables by 452 fifth grade children. The subjects were students utilizing meal service in public elementary schools in Boryeoung-city, Chungcheong-nam-do (urban); Cheolwon-gun, Gangwondo (rural); or Pocheon-gun, Kyeonggi-do (suburban). A survey was used to determine the preference of students for 59 foods containing vegetables as a primary ingredient, and categorized by fat content (high, low, or intermediate). Children with working mothers and those living in urban areas tended to have less preference for vegetables than their counterparts in rural areas or with mothers who remained at home. Preference for vegetable foods was correlated with the frequency that vegetable foods were prepared by mothers. Vegetable dishes with a high fat content were preferred over those with low or intermediate fat content, except far soup. This study suggests that children who live in urban areas and whose mothers work outside of the home may be predisposed to nutritional deficiencies due to poor acceptance of vegetable foods, and that all children may be at risk for over-consumption of dietary fat, due to a preference for high fat foods.

• 급식외식위생학회지
• /
• 제2권2호
• /
• pp.78-83
• /
• 2021

According to the report of the Korea Agro-Fisheries and Food Trade Corporation (2019), the size of the HMR food market in 2019 exceeded 4 trillion won. On the other hand, the consumption of agricultural products continued to decrease. As reported by Woo (2020) who analyzed consumer panel survey data, when the 2010 agricultural product purchase index was 100, the crop purchase index in 2019 was 72 and the vegetable and special crop purchase index was 69. Therefore, the Rural Development Administration promoted the research projects to develop the technologies for producing stably raw materials of HMR and for optimizing local foods as HMR ingredients. Researches on the development of HMR using local agricultural products has been being promoted in Cheonan, Chungju, and Jeju in 2020. In the case of Jeju, it has been prepared and realized the B2B commercialization of Jeju agricultural products in connection with the convenience store ingredients supplier in the province. In the case of Cheonan, development of HMR foods like as Sundae, dumpling, sausage, and Tteokgalbi using willd chive, cherry tomatoes, shiitake mushroom, fortified perilla, and licopene fortified watermelon has been being promoted. Lastly, in the case of Chungju, a diverse HMR foods have been developed using beans, centella asatica, Japanese lady bell, apples and peaches such as blended juices, frozen boiled rice, and tofu kit. In the future, in connection with the regional specialized crop cultivation project promoted by the Rural Development Administration, we intend to support the convergence commercialization of R&D technology based on regional characteristics.

• 한국식품조리과학회지
• /
• 제24권2호
• /
• pp.243-250
• /
• 2008

This study examined the quality characteristics of soybean pastes that were prepared using different ratios of whole soybean meju inoculated with three different types of microbial strains. The five samples were prepared with meju inoculated with Aspergillus oryzae KFRI 995, Bacillus subtilis F4005, mixture with A. oryzae KFRI 995 and B. subtilis F2315, mixture with A. oryzae KFRI 995 and B. subtilis F4005, and mixture using all three strains, respectively. Over two months of fermentation, pH gradually decreased, whereas total acidity increased. And across samples and fermentation periods, there were no considerable changes in moisture or crude protein. In all five samples, amino-type nitrogen levels increased approximately 2- to 3-fold as compared to initial levels; the sample inoculated with A. oryzae KFRI 995 showed the highest level (205.2 mg%) of amino-type nitrogen. Throughout fermentation, the five samples displayed differences in their reducing sugar levels according to the inoculated microorganisms. The lowest level of lightness and highest level of redness occurred in the sample inoculated with B. subtilis F2315 showed a lowest level in lightness and a highest level of redness, indicating a strong browning reaction. Finally, the samples inoculated with A. oryzae KFRI 995 and B. subtilis F4005, respectively, showed had similarly high preference scores as compared to the other samples.

• Journal of Nutrition and Health
• /
• 제43권5호
• /
• pp.524-532
• /
• 2010

본 연구는 어린이들이 선호하는 패스트푸드, 학교근처 길거리 즉석조리음식, 과자 등 가공식품, 그리고 집에서 먹는 과일류와 우유류 등 총 89종 식품의 나트륨과 염소 함량을 중성자 방사화 분석법으로 분석하여 33개의 식품 종으로 분류하여 제시하였다. 어린이 선호 간식 100 g 당 나트륨 함량은 과일은 0.3~35.1 mg, 우유류는 28.9~82.5 mg의 분포를 보였고, 빵, 케이크, 떡류는 127.2~602.2 mg. 캔디류, 쿠키류, 아이스크림류는 2.5~1169.9 mg의 분포를 보였다. 거리의 즉석조리음식과 서양식 패스트푸드 100 g은 각각 226.9~693.7 mg과 103.4~875.8 mg의 분포를 보였다. 어린이 선호 간식 중 튀긴치킨, 핫도그, 버거류, 도넛은 식품 100 g당 평균 Na 함량은 536 mg, 553 mg, 794 mg, 562.2 mg으로 '고 Na 식품'인 반면에, 과일, 우유류, 캔디류, 초코렛의 Na 함량은 4.9~82.5 mg의 분포를 보여 '저 Na 식품' 임을 보였고, 그 이외 스낵, 빵, 케이크, 떡, 김밥 등의 식품 100 g당 평균 Na함량은 175.2~496.9 mg을 보여 '중 Na 식품' 임을 보였다. 그리고 라면, 만두 및 누들, 버거류 및 피자 1회 분량을 통해서 667 mg 이상의 나트륨을 섭취하여 Na 1일 목표섭취량의 1/3이상을 상회하여 섭취하게 되며, 특히 라면 1회 분량을 통해 Na 목표섭취량의 2/3를 섭취할 수 있어 Na 저감화가 필요함을 보였다. 어린이 식품의 Cl 함량은 식품에 따라 차이를 보이지만, 식빵, 쿠키, 칩류, 버거류의 경우 모두 750 mg 보다 높았다. 본 연구 자료는 어린이 Na 섭취량 감소를 위한 영양교육이나 농촌진흥청에서 8차 개정 식품성분표 구축을 위한 자료로 사용할 수 있다.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2018년도 추계학술대회
• /
• pp.21-21
• /
• 2018

Natural product substances have historically served as the most significant also be prepared by source of new leads for pharmaceutical development. They can chemical synthesis(both semisynthesis and total synthesis) and have played a important role in the field of organic chemistry by providing synthetic targets. Rcently, they have also been extended for commercial purpose to refer to medicinal products, health functional foods, dietary supplements and cosmetics from natural sources. A large number of currently prescribed drugs have been either directly derived from or inspired by natural products. However, with the advent of robotics, bioinformatics, high throughput screening(HTS), molecular biology-biotechnology, combinatorial chemistry, in silico(molecular modeling) and other methodologies, the pharmaceutical industry has largely moved away from plant derived natural products as a source for leads and prospective drug candidates. The strategy for natural prduct industry is now changing from drug approaches to health foods by identifying effective natural products as preparations. In Korea, a lot of development of natural product based drugs have been done, but very few on health functional foods. The concept of natural product based health foods is not active components as lead compounds but standardized extracts or preparation mixed with other medicinal plants. The representative material has been recently known to be a standardized ginseng extract "Ginsana G 115" developed by Swiss Pharmaton company. The purpose of this presentation is to underline how natural products research continues to make significant contributions in the domain of discovery and development of new health functional foods. It is proposed to present the development of high value added health food or health functional foods through scientific investigation on efficacy and standardization of new materials form natural products.

• 한국식품조리과학회지
• /
• 제20권6호
• /
• pp.619-629
• /
• 2004

This study was prepared to present the research data for the promotion of Korean foods and restaurants in Korea and abroad by an analysis of the recognition and preference of Korean traditional foods and an importance-performance analysis of Korean restaurants by foreign visitors (n=351) and foreign residents (n=365). The most recognized Korean foods among foreigners were Bibimbap>Kimchi>Bulogi>Galbi>Samgyetang;however, the most preferred Korean foods were statistically different; Bibimbap>Kimchi>Bulgogi>Galbi>Rameyeon by foreign visitors and Bulgogi>Bibimbap>Galbi>Samgyetang>Kimchi by foreign residents. Especially, the preferences for Samgyetang and Dakgalbi were increased whereas that for Kimchi was decreased in foreign residents. The Korean foods were described as 'hot and pungent' and 'spicy' by foreign visitors, but 'hot and pungent', 'non-greasy' and 'salty' by foreign residents. In choosing a restaurant, 'quality of food' was most important among foreigners, but 'proper price' was considered more significant than 'sanitation and cleanness' by foreign residents compared with foreign visitors. The satisfaction with Korean restaurants of foreign residents was lower than that of foreign visitors. An analysis of importance and performance of Korean restaurants by foreigners was performed. There were significant differences in the evaluations of Korean restaurants between foreign visitors and foreign residents (p<0.05). The importance of the attributes related with 'foods' and 'sanitation' were rated higher by foreign residents. On the other hand, foreign visitors rated the importance of the attributes related to 'eating environment' and 'employees' more highly. Foreign residents significantly rated the performances of Korean restaurants lower in each attribute except 'additional free side dishes' and 'communications'.

• Preventive Nutrition and Food Science
• /
• 제7권4호
• /
• pp.373-377
• /
• 2002

Allergens in processed foods may place persons with food allergies at significant risk when the labels do not Provide sufficient warnings or identification of high-risk ingredients. Because egg proteins are common food allergens, this study was carried out to identify hen's egg albumin (ovalbumin, OVA) in five commercially processed foods containing egg (custayd, cookie and pasta), and chicken meat (sausage and meatball) by immunological methods using commercially produced murine monoclonal immunoglobulin G (M-IgG), immunoblotting and enzyme linked immunosorbent assay (ELISA). Sample buffer with chelating and reducing agents was prepared and used for the preparation of the protein fractions from the foods. Most bands in sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) profile (5~15% gradient gel) presented at 75 kDa below. OVA (43 kDa) in the sample lanes could not be visually observed on the gel. However, OVA in solutions prepared from custard and cookie could be detected by M-IgG, but were not detected in sausage and pasta. OVA in all samples could be quantitatively determined by the equation obtained from the standard curve by ELISA. Cookie and custard containing egg white and egg, respectively, contained very high concentrations of OVA. OVA in the other products were present in relatively low concentrations, but sufficiently high to pose possible risk of allergy, ELISA is a very sensitive and precise method for the identification and quantification of allergens in food products including allergy-inducible materials.