Bacteriological quality evaluations were carried out for rice rolled in laver(Kimbab), Hamburger, Walnut cake and Chinese noodle (Jajangmyun), which were on sale in April and May 1995, in May and July 1997 and in January 1999, at 20 different resting places on Kyung-Bu, Ho-Nam, Joong-Bu and Young-Dong Highway in Korea. Food poisoning bacteria were not detected. However numerous coliform bacteria were dectected saying that the sanitary condition of foods on sale at resting places of the highways was not hygienic. There exited 8.8 × 10⁴∼6.6 × 10^5 cells/g of coliform bacteria in all the Kimbab sold in 1995. As for Hamburger, 1.8 × 10²∼4.7 × 10⁴ cells/g of coliform bacteria proliferated in all the samples. In 1997, E. coli was found in 16 cases and 21 cases respectively out of 22 Kimbab samples, Hamburger dealing at 7 resting places out of 14 were contaminated with 1.7 × 10²∼1.9 × 10^7 cells/g of coliform bacteria and Hamburgers dealing at 2 resting places were infected by E. coli. In contrast to the Kimbab and Hamburger, all the 6 Walnut cake samples were free from the microbial pollution exhibitory that their hygienic condition was satisfactory. 3 samples out of 6 Jajangmyun were contaminated by 7.1 × 10²∼2.0 × 10³cells/g of coliform bacteria, but E. coli was not detected. Compared Kimbab sold in 1995 and 1997 with 1999, Kimbab sold in it can be said that hygienic control for Kimbab should be performed more strictly during hot season than during cold season. Walnut cake was the safest against microbial contamination, followed by Jajangmyun, Hamburger and Kimbab in decreasing order, indicating that foods with mixed ingredients such as Kimbab and Hamburger were more susceptible to microbial infection, so that a more systematic safety control is needed for such foods during cooking, processing and distribution.

Korea market of food service industry has been increased greatly since early 90's with the emergence of professional catering business and the expansion of school food service. Because of the characteristics of food service establishment, feeding many people at a time, there is always a high potential of foodborne outbreak which requires special sanitary management to prevent. Currently, many catering businesses are interested in HACCP(Hazard Analysis Critical Control Points), a new sanitary management system, and are trying to develop HACCP Plans for their food service establishment. Microbiological hazard analysis, a most important step for developing HACCP Plan, provides also basic information for evaluating sanitary aspect of prepared foods and their materials. There are not extensive data of microbiological hazard analysis for food service operations, especially for prepared foods and raw materials, which are helpful for developing a HACCP Plan. The extensive microbiological hazard analyses for 65 prepared foods and 51 raw materials selected from a couple of food service establishment were performed in this research. These results will provide useful information to determine hazards for developing a HACCP plan, and also to understand sanitary status for prepared foods and raw materials in food service establishment.

Commonly eaten fish, meat and other protein-containing foods show some level of mutagenic activity following normal cooking such as broiling, frying, grilling, roasting etc. The main food mutagens found in cooked products are $quot;heterocyclic aromatic amines$quot; . Several of them have been shown to be carcinogenic in rodent and suggested to be relevant for human cancer etiology. This review summarizes the chemistry, formation, occurrence and toxicity of food-borne heterocyclic aromatic amines. Factors that influence the formation of them are also discussed with special emphasis on dietary factors. From a health safety point of view, it is desirable to estimate the intake of heterocyclic amines via foods, and reduce or prevent the formation of food mutagens.

식품의 방사선조사 기법은 지난 40여년간 세계적으로 체계적인 연구가 수행되면서 그에 대한 안전성과 기술적 타당성이 입증되고 있음에도 불구하고 아직까지도 제한적으로 이용되고 있는데 이의 주된 이유는 방사선조사 식품에 대한 소비자의 수용도를 확신할 수 없기 때문이다. 따라서 본 연구에서는 방사선조사 식품에 대한 올바른 정보를 소비자들에게 제공하기 위한 기초자료를 얻기 위해 방사선조사 식품에 대한 소비자들의 구입의도 및 구입의도에 따른 집단을 구분하는데 영향을 미치는 변수들을 분석하였다. 본 연구를 통해 얻어진 결과를 요약하면 다음과 같다. 첫째, 우리 나라 소비자들의 식품의 안전성 및 식품의 신선도 보존에 관한 관심도는 매우 높았다. 방부제, 잔류농약, 식중독, 식품의 변패 및 식품의 신선도 보존 등의 5가지 항목 중 식품의 변패에 대한 관심도가 특히 높게 나타났으며, 그 다음으로는 잔류농약, 식중독의 순으로 관심이 많았다. 둘째, 우리 나라 소비자들의 방사선조사 식품에 대한 인지도는 대체로 낮았으며 특히 연령이 많거나 학력이 낮은 경우 방사선조사 식품에 대해 인지도가 낮은 것으로 나타나 이들을 대상으로 한 소비자교육이 보다 활성화되어야 할 필요가 있는 것으로 나타났다. 방사선조사 식품에 대한 수용 정도에 있어서는 응답자의 1/3-4/5가 방사선조사 식품의 구입에 대한 찬성이나 반대의 의사표시를 보이는 대신에 관망적인 자세를 취하고 있었다. 방사선조사 기법이 제공하는 혜택 중에서 농약 처리 후 식품에 농약이 잔류되는 것과는 다르게 방사선조사 식품에 방사선이 잔류하지 않는 경우, 방사선조사 식품을 구입할 의도가 많은 것으로 나타났다. 즉 식품의 안전성과 관련하여 많은 소비자들이 식품에서 농약의 잔류성분에 대해 우려를 하고 있는 것으로 나타났으므로 앞으로 이를 대체할 수 있는 하나의 방법으로 식품에 방사선조사 처리 기법이 활용될 것으로 예상되며, 이를 위해서는 방사선조사 식품의 안전성이 뒷받침되어야 할 것으로 보인다. 셋째, 방사선조사 식품의 구입의도 정도에 따른 집단을 구분하는데 영향을 미치는 변수를 살펴본 판별분석의 결과, 식품의 안전성에 대한 관심도, 혁신성에 대한 자아평가, 유기농작물에 대한 지불의도, 그리고 방사선조사 식품의 인지도는 방사선조사 식품의 구입의도를 구분하는 집단을 설명하는 데 있어 대체로 영향력이 있는 것으로 나타났다. 반면에 월가계소득은 5개의 판별분석에서 한 번도 유의하지 않은 것으로 나타나서 방사선조사 식품의 수용정도를 구분하는 데 있어 영향력이 없는 것으로 나타났다. 특히 소비자의 혁신성 정도가 방사선조사 식품의 수용도를 구분하는데 있어 중요한 변수라는 사실은 방사선조사 식품의 기법이나 그러한 식품이 갖는 혜택과 관련된 정보를 혁신적 소비자나 조기수용자에게 우선적으로 제공하는 것이 효과적임을 알려주고 있다. 최근 국제적으로 방사선조사 식품의 이용이 확대되고 있으며, 수출입 식품에 대한 방사선 처리가 증가되고 있는 국제환경 속에서 소비자들에게 방사선조사 식품에 대한 올바른 정보를 효과적으로 제공함으로써 그들의 식품구입 의사결정에 도움을 주는 것이 매우 필요하다. 더욱이 본 연구결과 우리 나라 소비자들은 방사선조사 식품에 대한 낮은 인지도를 가지고 있어 소비자로서의 알권리를 제대로 누리지 못하고 있는 것으로 나타나 앞으로 국내에서 방사선조사 식품이 상업적으로 널리 보급되기에 앞서 방사선조사 식품에 대한 소비자교육이 활발하게 이루어질 필요가 있다고 본다.

This study was carried out to determine the contents of sodium saccharin, sodium benzoate and potassium sorbate in danmooji, jangachi, puffed cereal, mixed beverages, carbonated beverages, fruit and vegertable juices (excepted unheated fruit and vegertable juices) and dried fishery products(seasoned) in the market. Sodium saccharin, sodium benzoate and potassium sorbate were analyzed by HPLC at the wavelength of 215 nm with 0.05% ammonium phosphate dibasic acetonitril mobil phase(94 : 6), and recovery rates were 96.2-100.3%, 95.8-100.9%, 96.1-99.8%, respectively. The contents of sodium saccharin were N.D.-1234.8 mg/kg in danmoogi, jangachi, puffed cereal and mixed beverages and sodium benzoate in mixed beverages, carbonated beverages, fruit and vegertable juices were N.D.-663.2 mg/kg, and potassium sorbate in danmooji, jangachi and dried fishery products were N.D.-2725.2 mg/kg.

This study examines the effects of the Korean horticultural foods which are, by traditional wisdom, supposed to contain anti-aging substance. All twenty three kinds of plants are chosen as a sample for the experiment in which the content of three main anti-aging nutrients, -carotene, Vitamin C, and Vitamin E are respectively measured by Nilis, Colorimetric, and AOAC method. The result shows: among the samples, top six plants that contain the most -carotene content are high quality tea(Camellia sinensis), thistle(Cirsium japonicum Var.), Angelica keiskei, mulberry leaves(Morus alba l.), field horsetail(Equisetum arvensa), and carrot(Daucus carota), in order; top four for a Vitamin C contents are low quality tea, mulberry leaves, pine leaves(Pinus densiflora), and high quality tea, in order; top four for a Vitamin E contents are persimmon leaves(Diospyros mongolicum) tea, high quality tea, low quality tea, and pine leaves, in order. Drying or boiling process increases the content of -carotene and Vitamin E in high quality tea, dropwort(Oenanthe javanica), field horsetail, and wild aster(Ligularia stenocephala Marsumum et Koldzumi), while, in case of mulberry leaves, drying process lowers them. Vitamin C content strikingly decreases in heating and drying process.

The several sacrificial rites foods in east coast areas Kyungpook province, Pohang, Youngduk, and Uljin, were surveyed. For the anniversary menorial service, the food items in these reas were mainly rice(Bab'), soup(Guk'), stew(Tang'), fruits, neats and fishes, alcohol which are the typical food items for any other area in Korea. In this east coast area, the seaweed was used more often than in inner land area for this rite food. Four kinds of rice cake(Ddeok' or Pyun') were surveyed for this rite. For the baked food item(Geuk'), the fish squid and the Alaska pollack were used frequently for Geuk'. For the fruits dishes, 3 items were the basic. Tang' which was made with the various fishes, were used very frequently. For the religious memorial service for god to guard the household, the displayed food items were different from depending on the type of the god to guard the household, however, the general display of the food items was almost the same as in land area. For the winter sacrificial rite, the boiled rice(97%) and Bakpyun' was used mostly for the Ddeok'. For the Guk', bean sprout was used mostly, however, the seaweed soup was also used(7%). The fish Tang' was the most used one(35%). For young-deung-je', which implied th safe guard of the household, most of the food items are similar to those of the normal sacrificial rite, however, the fishes which were not fishy were used. The housekeeper arranged the rite to catch a large amount of the fishes and to hope the wellbeing of the household, Poong-yer-je is so called as Byul-sin-gud'(a practice of an exorciser). The food items for this Poong-yer-je' were almost similar to those of the winter sacrificial rite, however, Geulpyun' was mostly used for the Pyun'. In addition that, the red-bean Si-ruddock', Baekpyun', and Yung-ddock'(a dragon cake) were used for this rite, At the end of the sacrificial rite, Yong-ddock' was served to the dragon king which was believed in sea.

Phytic acid, making up 1-5% of the composition of many plant seeds and cereals, is known to form iron-chelates and inhibit lipid peroxidation. Thiobarbituric acid reactive substances (TBARS), as an indication of lipid peroxidation, were measured in beef round, chicken breast, pork loin, and halibut muscle after the meats were stored for 0, 1, 3, 5, and 7 days at various temperatures [frozen (-20℃), refrigerator (4℃), and room temperature (25℃)]. Phytic acid effectively inhibited lipid peroxidation in beef round, chicken breast, halibut, and pork loin muscle (p$lt;0.05). The inhibitory effect of phytic acid was dependent on concentration, storage time, and temperature. At frozen temperature, the inhibitory effect of phytic acid was minimal, whereas at room temperature, the inhibitory effect of phytic acid was maximal, probably due to the variation of the control TBARS values. At the concentration of 10 mM, phytic acid completely inhibited lipid peroxidation in all the muscle foods by maintaining TBARS values close to the level of the controls, regardless of storage time or temperature (p$lt;0.05). The rate of lipid peroxidation was the highest in beef round muscle, although they had a close TBARS value at 0 day. Addition of phytic acid to lipid-containing foods such as meats, fish meal pastes, and canned seafoods may prevent lipid peroxidation, resulting in improvement of the sensory quality of many foods and prolonged shelf-life.

The average number of total viable counts for the commercial pork tested was 19/g, coliform 1.8/g, psychrophilic bacteria 15/g, heterotrophic bacteria 12/g, fecal streptococcus 6.2/100 g, Pseudomonas aeruginosa 13/100 g and none of heat-resistant bacteria and Staphylococcus was detected. That for the commercial beef tested was 130/g, coliform 5.2/g, psychrophile 140/g, heterotroph 28/g, Staphylococcus 1.2/g, fecal streptococcus 9.5/100 g, Pseud. aeruginosa 1.9/100 g and heat-resistant bacteria was not detected. That for the commercial chicken tested was 8800/g, coliform 53/g, psychrophile 4600/g, heterotroph 4700/g, fecal streptococcus 9.9/100 g, Pseud. aeruginosa 2.5/100 g. That for milk was 4700/ml, psychrophile 120/ml, heterotroph 420/ml and the others were not detected. That for the commercial cheese was 3.2/g, psychrophile 2.3/g, heterotroph 1.6/g, Staphylococcus 1/g, fecal streptococcus 9.1/g. That for fermented milk was 10^7/ml, heatresistant bacteria 10^6/ml, fecal streptococcus 2400/100 ml, lactobacillus 3.2 × 10^(15)/ml, in accordance with lactic acid bacteria and the others were not detected. There was not detected any indicator organisms from ham, sausage, butter, eggs and quails in the commercial fooods tested. SPC, coliform, psychrophile and heterotroph in commercial meats stored at 10℃ were increased rapidly as time goes on but heat-resistant bacteria, staphylococcus, fecal streptococcus and Pseud. aeruginosa were constant. At 20℃, SPC, coliform, psychrophile, heterotroph and fecal streptococcus were the highest at 7 days and heat-resistant bacteria, staphylococcus and Pseud. aeruginosa were increased a little. At 30℃, all indicators were increased rapidly for 3 and 7 days and then decreased rapidly. All indicator organisms were increased at the level of 10/g for 14 days in meat products stored at 10℃, but SPC, psychrophile and heterotroph in meat products stored at 20℃ were increased at the level of 10^5/g. It showed that the indicators in meat products stored at 30℃ had a tendency to increase at the level of l0₂/g relative to those stored at 20℃. SPC, psychrophile and heterotroph in milk stored at 10 increased up to the level of 10₄/ml, but coliform, staphylococcus, fecal streptococcus and Pseud. aeruginosa were not detected. As stored at 20℃ and 30℃, they were increased rapidly for 1 or 3 days and then constant for a long time.

1. Both the festival held in Confucian temple to honor Confucius or a religious ceremony in Korean traditional lecture-hall are the sacrificial rituals which is the mark of the respect for prescholars and these rituals has been followed the rules written in the book,'Yaegi' 2. For the Food formal display for the festival in Confusian temple of Chinese Gukjagam, Pebak(clothes), Mohyul(hair and blood), and the ritual food dishes, such as Byun 10, Doo 10, Gang 3 (Deung 1, Hyung 2), Bo 2, Cue 2, Jo 3 (Taeraeu as beef dish 1, Soraeu as sheep and pork dishes 2), Joo(alcohol) 3 were displayed, while in Juhyunhak, Byun 8, Doo 8 were displayed. In Taesangji edited around in 1873 in Korea, for the Confucian shrine Pebak, Mohyul, Byun 10, Doo 10, Deung 3, Hyung 3, Bo 2, Cue 2, Jo 6 (raw 3, cooked 3), Joo 3 were displayed. In pedantry Confucian temple, Pebak, Byun 8, Doo 8, Bo 2, Cue 2, Jo 2 (raw sheep and pork), Joo 3 were displayed while Mohyul was omitted, which this type of display was almost identical through the nationwide survery for the Confucian food display. Some of the Confucian food display, most of the display for Bo and Cue have been changed to Bo 1 and Cue 1, and one fifth of the Confucian display for Byun and Doo also has been changed in the numbers and food varieties. 3. In most of the sacrificial ritual food display in the Korean traditional lecture-hall, Pebak (some not applicable), Byun 4, Doo 4, Bo 1, Cue 1, Jo 1 (raw), Joo 1 were displayed. In these days, the number of the Confucian temple where the sacrificial rituals is not held, has been increased. 4. For the names of food for the Byun and Doo dishes, mostly the old names are used, however, minor changes in materials and cooking method have been found.

The purpose of this stud was to investigate the degree of recognition as well as the consumption pattern of convenience food products, and related factors among 700 mixed Korean college students using written questionnaire. Students of Seoul region showed the significantly lowest rate of recognition at 36.7%. Results also showed that lifestyles have a significant effect on the degree of recognition of convenience foods. The consumption patterns of convenience foods goes as follows: used frequently-18.2%, once in awhile-73.9%, doesn't use-7.9%. The higher the recognition rate, the higher the consumption rate for convenience foods. When compared in terms of residence, students living at home used more refrigerated foods compared to students living outside of the home. Among the total students living outside of the home, students living on their own scored highest of convenience food consumption. In the case of female students living outside the home, respondents living alone and in dormitories scored the highest. Female students living in dormitories were mainly using refrigerated and canned foods, while those living alone consumed more kimbap and 'sa-bal-myun' in convenience stores. Korean college students mainly consumed frozen food, retort food, and kimbap in convenience stores. The college student that believes that 'You eat to satisfy hunger' significantly used more convenience food while those that marked 'maintain health' consumed the lowest showing a great difference between groups. Results showed that the lower the food habit score, the higher the usage score of convenience foods. The food habit score had a negative correlation with the usage of frozen foods, instant food, and convenience store food. When compared individually, packaged 'ramen' and 'sa-bal-myun' scored the highest points of usage. Frozen fried rice and pre-packaged rice scored the lowest points indicating Korean college students do not consider rice a convenience food. Convenience food consumed in convenience stores ranked the highest among places of consumption, compared to places like home or outdoors; showing that convenience foods were used by people with limited time constraints.

본 연구는 서울과 경기 지방의 주부들을 대상으로 식생활 행동과 편의식에 대한 인식도를 조사함으로써, 한국형 건강 편의식 개발 방향 도출에 필요한 기초 자료를 얻고자 시도되었다. 본 연구를 위하여 710명의 주부들이 응답한 설문지가 통계학적으로 분석되었다. 설문지는 일반 사항, 식생활 및 식품 구매 행동과 편의식에 대한 인식도에 관한 문항들로 구성되었다. 일반 사항 중 연령, 취업 여부, 라이프스타일이 응답자의 식행동과 편의식에 대한 인식에 유의적인 영향을 미치는 인자임이 규명되었다. 식생활 전반에 대한 책임을 맡고 있는 것은 주부들이었으나, 이들의 대부분이 식사준비에 대해 즐겁다기보다 부담을 느끼고 있는 것으로 나타났다. 이러한 태도는 다른 연령군, 취업 여부, 라이프 스타일군에서 유의적인 차이를 보였다. 장보기 빈도는 필요할 때마다 1주일에 2~3번이 가장 높았다. 또한 미리 식단 계획을 하기보다는 장볼 때 즉흥적으로 하는 경향이 뚜렷했다. 식품 구입시 가격보다는 품질을 중요시하고 있었다. 소비자들은 현재 시판되고 있는 손질된 야채나 조리된 식품에 대해 만족하지 못하고 있었다. 그러나 품질이 우수한 편의식 개발에 대한 요구도는 높은 것으로 나타났다.

This study was carried out to give some help for housewives recognizing the desirable purchase of processed foods and food additives. This results were abtained as follows; In case of purchase action for processed foods of housewives confirmation of manufacturing date was the highest point(4.62). When housewives bought processed foods they considered the taste of them as first, and frequencies of processed foods intake showed the ratio of 46.6%, also it was shown to be used once a week. The order for use of processed foods were milk, milk products(butter, cheese, yoghurt, lactic bacterium beverage) 40.2% >canned foods 22.6% >meat products(ham, sausage, bacon) 20.9% > jelled fish 16.3%. Most of housewives wanted to have the knowledge and information for food additives at the highest point(4.11). The interest about food additives of housewives was shown to the order of synthetic preservative 3.86 >chemical seasoning 3.74 >synthetic sweetener 3.59 >synthetic coloring agent 3.53. Also, it was shown to be thought that the hazard factors effected on food safety were agricultural chemical residue(30.9%), environmental pollution(25.2, food additives(23.0%), and microorganism contamination(20.9%).

This study was undertaken to evaluate microbial risk degree of some processed foods in Korea. In this study the data on the outbreak of foodborne diseases during recent 18 years (1976-1989, 1993-1996. 8) were analyzed. The most frequently isolated pathogens were Salmonella (36.9%); followed Vibrio (22.0%), Staphylococcus (15.7%) and Escherichia coli (13.3%). Outbreak rate of Staphylococcus, Vibrio, E. coli and Salmonella, was 33.0%, 23.5%, 17.5% and 17.1%, respectively. Overall risk degree of pathogens by fatality rate, outbreak rate and pathogen amount for foodborne outbreak was Clostridium, 5, Staphylococcus and Vibrio, 4, Salmonella and E. coli, 3. Based on foodborne pathogens, the risk degree of raw seafoods, raw eggs and processed seafoods were 4, and those of raw meats, Doshiraks and milk products were 3. Also, based on processing characteristics of foods, the risk degree of surimi-based imitation crab was 3. Foods of the highest actual risk degree were raw seafoods and raw eggs (16); followed raw meats (15), surimi-based imitation crab (12), Doshirak (9) and milk products (6).

The modification of rice powder was attempted by treatment of acetic acid and epichlorohydrin to improve the functional properties of baby food. The initial gelatinization temperature of rice powder determined by amylograph was decreased from 79.5℃ to 63℃ by modification. The apparent and maxium viscosity of rice paste at 95℃ before and after modification were increased from 92B.U. to 236B.U. and from 100B.U. to 202B.U., respectively. The light transmittance of modified rice paste was increased from the temperature of 60℃ and by increasing the degree of substitution at the fixed temperature, while decrease more or less by the treatment of epichlorohydrin. The degree of retrogradation of the paste was decreased from 28.7 to 18.0 upon modification. The rate of syneresis of modified rice powder was decreased with increasing the drgree of substitution and ,the extend of epichlorohydrin treatment. Syneresis was not observed when acetylated rice powder whose DS value is 0.048 was treated with 0.25% of epichlorohydrin for the formation of cross-linkage. The addition of modified rice powder in preparation of semi-solid type infant food could improve the quality without lowering overall digestibility.

Starch plays an important role in textural quality of infant food which is mainly affected by retrogradation of starch during storage. The acetylated rice was prepared and its physicochemical properties were evaluated to improve the textural quality of infant food when added. When the rice powder was reacted with acetic acid with its increasing concentration from 0.1 M, 0.2 M to 0.3 M, the amount of acetyl group and degree of substitution were increased by 0.39%, 0.8% and 1.27%, and by 0.0014, 0.031 and 0.048, respectively. The initial gelatinization temperature of rice paste determined by amylograph was decreased from 79.5℃ of unmodified rice to 67.5℃ of acetylated rice whose DS is 0.048. The apparent and maxium viscosity of rice paste at 95℃ before and after modification were increased from 92 B.U. to 201 B.U. and from 100 B.U. to 236 B.U., respectively, The degree of retrogradation and rate of syneresis were decreased from 28.7 to 18.8 and from 0.47% to 0.25%, respectively with increased by DS from 0 to 0.048. The digestibility rate of rice powder decreased from 9.19 of natural rice powder to 7.54 of acetylated rice powder whose DS is 0.048. In United State, there is no serious problem in total digestibility because only 4% of modified rice powder is added in production of infant food.

To provide basic information for the development of refrigerated convenience foods for Koreans, 492 house-wives residing in Seoul and Kyunggi Province were surveyed concerning satisfaction of buying precooked convenience foods, frequency of using them, preferred Korean dishes, and willingness to buy the convenience foods if they are developed. Statistical data analysis was completed using SAS package program. The satisfaction mean score of the marketed precooked convenience foods was 2.73 out of 5 and the housewives were least satisfied with feed additives and sanitation factors. The factors affecting satisfaction in purchasing were sanitation, taste, variety of type, nutrition, price, and food additives for side-dishes sold refrigerated or at room temperature, and taste, sanitation, variety of type, price, nutrition, and food additives for frozen prepared foods in order respectively. The frequency of using the precooked convenience foods was generally low but that of using the pickled dishes, Jokbal Soondae, and frozen prepared foods was relatively high. The answer of 'the thought that meals should be prepared in households' was the primary reason for avoiding using the precooked convenience foods and 'no time to cook' was the most frequent answer among the reasons for using them. Currently, the precooked convenience foods were used for snacks mainly, but the usages to be expected to increase were for lunchbox, main dishes, snacks, side dishes, special occasions foods, and leisure foods in order. Based on preference and buying priority, the dishes needed to be developed as refrigerated convenience foods among Korean dishes were identified. The result showed that 'preference' was not consistent with buying priority and the housewives perceived the factor of 'convenience' more importantly than 'preference' in purchasing the convenience foods.

The establishment of optimal producing condition for rice-based infant foods using modified rice powder was attempted. The modification of rice powder was prepared by microwave heating as well as partial enzymatic hydrolysis. Not only thermal treatment but also enzymatic hydrolysis on rice powder increased D.E. value from 1.25 to 3.81. The water binding capacity, swelling power, solubility, digestibility by α-amylase, light transparency, and paste clarity of the modified rice powder compared to unmodified rice powder were increased from 107% to 249%, from 7.80 to 42.52, from 0.04% to 0.89ft, from 9.19% to 23.01, from 33% to 42%, and from 2.2% to 3.9%, respectively. On the other hand, gelatinization temperature, apparent viscosity, and degree of retrogradation of modified rice powder showed negative correlation with D.E. value. The 「results suggested that the thermal and enzymatic treatment on rice powder improved the physicochemical properties of rice based infant food by enhancing carbohydrate absorptionability and lowering the viscosity and opacity.

The prevention of oxidative degradation in fats and oils is largely controlled by the use of synthetic phenolic antioxidants. Antioxidants, BHA: 2-&3-tert-butyl-4-hydroxyanisol, BHT: 3,5-di-tert-butyl-4-hydroxytoluene, TBHQ: tert-butylhydroquinone, PG: propyl gallate, PTG: pentyl gallate, OG: octyl gallate, were extracted from fatty foods with hexane and from hexane layer to presaturated acetonitrile with hexane. The polar phenolic hydroxyl groups of antioxidants were silylated with MSTFA and injected to Gas Chromatography/Mass Spectrometry. The calibration plots were linear in the investigated range, 0.1-10.0 ug/g. The limit of detection for 6 phenolic antioxidants was 0.1 ug/g. Recoveries and reproducibilities from samples fortified at 1.0 ug/g were in the range of 70-90% and 0.5-13%, respectively. The simultaneous determination of phenolic antioxidants in fatty foods using GC/MS-SIM mode and macro program was described.

A study was carried out to compare the daily foods which were eaten during 14~19 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.