• Journal of Microbiology and Biotechnology
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• 제20권2호
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• pp.229-237
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• 2010

Recently, many cases related to viral gastroenteritis outbreaks have been reported all over the world. Noroviruses are found to be leading as the major cause of outbreaks of acute gastroenteritis. Patients with acute gastroenteritis are normally found to be positive with norovirus when the stools and vomit are analyzed. This paper reviews various activities and previous reports that describe norovirus contamination in various food matrixes and the relationship between food handlers. Lately, a numbers of norovirus outbreaks have been reported that are involved with fresh produce (such as vegetables, fruits), shellfish, and prepared food. Food produce processed by infected food handlers may therefore become easily contaminated. In addition, foods that required much handling and had been eaten without heat treatment gave the high risk for getting foodborne illnesses. The standard method for detection of norovirus has already been available for stool samples. However, only a few methods for detection of norovirus in food samples have been developed until now.

• Asian Pacific Journal of Cancer Prevention
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• 제16권14호
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• pp.5823-5828
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• 2015

Micronutrients in food have been found to have chemopreventive effects, supporting the conclusions from epidemiologie studies that consumption of fresh fruits and vegetables reduces cancer risk. The present study was carried out to evaluate the role of querctin (Q) and sodium gluconate (GNA) supplementation separately or in combination in ameliorating promotion of colon tumor development by dimethyl-hydrazine (DMH) in mice. Histopathological observation of colons in mice treated with DMH showed goblet cell dysplasia with inflammatory cell infiltration. This pathological finding was associated with significant alteration in oxidative stress markers in colon tissues and carcinoembryonic antigen (CEA) levels in plasma. Mice co-treated with GNA and Q showed mild changes of absorptive and goblet cells and inflammatory cell infiltration in lamina properia, with improvement in oxidative stress markers. In conclusion, findings of the present study indicate significant roles for reactive oxygen species (ROS) in pathogenesis of DMH-induced colon toxicity and initiation of colon cancer. Also, they suggest that Q, GNA or the combination of both have a positive beneficial effect against DMH induced colonic cancer induction in mice.

• 한국환경농학회지
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• 제20권5호
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• pp.340-345
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• 2001

High rates of nitrogen fertilization dangerously increase the nitrate content of vegetable crops, and the accumulation of nitrate in edible crops is undesirable because of potential risks to human health. Micronutrient solution containing Cu, Mn, Mo, Zn was tested for the suppression of nitrate accumulation in lettuce grown in pots treated with Mg fertilizer under a greenhouse condition. The micronutrient solution was sprayed on leaves at 3 and 4 weeks after transplanting of 20-day old seedlings. Plants were harvested after 5-week growth, and yield, contents of chlorophyll, sugar, micronutrient and nitrate, and also nitrate reductase activity were measured. Fresh weight of lettuce was significantly increased by the application of Mg and micronutrients, and the effect was the most significant in the Mg+micronutrient treatment. Also contents of chlorophyll and micronutrients were higher in the plants of micronutrient treatments. Contents of nitrate were reduced by about 14-18% in lettuce with Mg and/or micronutrient applications. Compared to the plants of control treatment, nitrate reductase activity was also higher in those plants treated with micronutrients, and in the treatment of Mg+micronutrients the enzyme activity was six times as high as that of control treatment. Although the effect of mineral nutrients on the suppression of nitrate accumulation in lettuce was relatively small in this study, an appropriate supply of mineral nutrients could be one of the solutions for the nitrate accumulation in vegetables.

• 한국식생활문화학회지
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• 제16권4호
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• pp.296-309
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• 2001

This study was conducted to investigate the consumers' recognition and information need for food safety, especially focused on pesticide residues, foodborne illness, and food additives. The data were collected from 350 adults living in Taegu and Pusan by the self-administered questionnaire. Frequencies and chi-square tests were conducted by SPSS. The results of the survey were as follows: (1) the consumers' concerns about food safety were high, (2) many respondents worried about eating vegetables, fruits and grains in turn because of pesticide residues, and did not trust the results from food-safety tests, (3) the major factor for foodborne illness was regarded as unfreshed or contaminated food stuffs, (4) many consumers concerned highly about preservatives among food additives, and tried to consume food containing less food additives, and (5) many respondents wanted to get the information about harmfulness of pesticide residues in foods, method to choose fresh food, and safety of food additives.

• 한국식품과학회지
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• 제4권1호
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• pp.13-17
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• 1972

This experiment was conducted to observe the changes of composition of atmosphere in storage room by controlled ventilation under normal and sub-atmospheric conditions, and the biochemical changes in apple texture under these conditions. The results were as follows; 1) By controlled ventilation, concentration of carbon dioxide in storage room was optionally regulated and constantly maintained. 2) Among compositions of internal atmosphere of apple, especially, concentration of ethylene was much decreased at apple stored under sub-atmospheric condition than that stored under normal atmospheric condition. 3) Acidity of apple stored under sub-atmospheric condition was much greater than that of apple stored under normal atmospheric condition. 4) Respiratory quotients of apple, which was stored under normal and sub-atmospheric conditions, were shown to be high. But decarboxylation of added pyruvate was found more active in slices prepared from apple stored under sub-atmospheric condition.

• 한국식품조리과학회지
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• 제23권1호통권97호
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• pp.156-164
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• 2007

This study investigated the impacts from the recognition and satisfaction of Korean foods on the revisit intentions of japanese tourists to Korea. The subjects of this study consisted of 365 Japanese tourists visiting Korea. The findings are summarized as follows: (1) the recognition of Korean food included 'the quality of food material is fresh and good'(3.99 pints), 'Korean food is nutritious and healthful food'(3.89 points), and 'Koran food consisted of grains and vegetables, and the cooking methods were developed specially'(3.88 points) in the order. (2) They were highly satisfied with the 'nutrition of the food,' 'taste of the food,' and 'quantity of the food,' in terms of the Korean food quality however, they were not satisfied with 'Japanese marks on ingredients,' 'sanitary,' 'smell,' and 'freshness.' (3) The most influential recognition variables to affect revisit intentions to Korea was 'health knowledge' followed by 'unique,' 'preference,' 'experience,' and 'interest.' (4) The most influential satisfaction variable to affect revisit intentions to Korea was 'food and menu' followed by 'translation and understanding,' and 'flavor and appearance.'

• 한국축산식품학회지
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• 제25권1호
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• pp.60-65
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• 2005

Antioxidant films are one active packaging technology that can extend food shelf-life through preventing lipid oxidation, stabilizing color, maintaining sensory properties and delaying microbial growth in foods. Because raw, fresh and minimal processed foods are more perishable during storage or under display conditions than further processed foods, they rapidly lose their original quality. Foods are susceptible to physical, chemical, and biochemical hazards to which packaging films can be effective barriers. Although films incorporated natural (tocopherols, flavonoids and phenolic acids) or synthetic antioxidants (BHT, BHA, TBHQ, propyl gallate) have been extensively tested to improve quality and safety of various foods, food applications require addressing issues such as physical properties, chemical action, cost, and legal approval. Increased interest in natural antioxidants as substitutes for synthetic antioxidants has triggered research on use of the new natural antioxidants in films and coatings. Use of new components (phytochemicals) as film additives can improve food quality and human health. The biosynthesis of plant phenolics can potentially be optimized by active coatings on harvested fruits and vegetables. These coatings can trigger the plants natural proline-linked pentose phosphate pathway to increase the phenolic contents and maintain overall plant tissue quality. This alternate metabolic pathway has been proposed by Dr. K. Shetty and is supported by numerous studies. A new generation of active food films will not only preserve the food, but increase food's nutritional quality by optimizing raw food biochemical production of phytochemicals.

• 동아시아식생활학회지
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• 제12권6호
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• pp.489-501
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• 2002

The list of monthly offering items of the Chunshin(薦新) ceremony, the service of offering the first food product of year to ancestors, shown in the Walryong(月令) in Oreaeui(五禮儀), the book written in early years of the Chosun dynasty, was studied and classified by food group. Six kinds of the cereals and grain products - barley, wheat, an early-ripening rice plant, a barnyard millet, and millet seed were offered. The meat products offered were wild geese, pheasants, swans, hares and dried-pheasants. Though not shown in e Walryong, roe deer and deer were offered from hunting trips in e winter. Eight kinds of sea-fish, six kinds of fresh-water first and six kinds of other seafood such as crab, octopus, and squid were offered. Ten kinds of vegetables: bamboo shoots, e99plants, cucumbers, etc. - were offered. Eleven kinds of tree fruits - cherries, apricots, Pears, etc., seven kinds of citrus fruits - tangerines, citrons, etc., seven kinds of nuts - chestnuts, pine-nuts, etc. and two kinds of melons - watermelons etc. - were offered. The hi인est variety in the offering items was the fruits category The remaining offering items included wine brewed from new rice. new brown seaweed, and green tea.

• Journal of Biosystems Engineering
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• 제35권6호
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• pp.450-457
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• 2010

Although cherry tomato is one of major vegetables consumed in fresh vegetable market, the quality grading method is mostly dependant on size measurement using drum shape sorting machines. Using Visible/Near-infrared spectroscopy, apparatus to be able to acquire transmittance spectrum data was made and used to estimate firmness, sugar content, and acidity of cherry tomatoes grown at hydroponic and soil culture. Partial least square (PLS) models were performed to predict firmness, sugar content, and acidity for the acquired transmittance spectra. To enhance accuracy of the PLS models, several preprocessing methods were carried out, such as normalization, multiplicative scatter correction (MSC), standard normal variate (SNV), and derivatives, etc. The coefficient of determination ($R^2_p$) and standard error of prediction (SEP) for the prediction of firmness, sugar, and acidity of cherry tomatoes from green to red ripening stages were 0.859 and 1.899 kgf, with a preprocessing of normalization, 0.790 and $0.434^{\circ}Brix$ with a preprocessing of the 1st derivative of Savitzky Golay, and 0.518 and 0.229% with a preprocessing normalization, respectively.

• 방사선산업학회지
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• 제8권2호
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• pp.97-104
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• 2014

Postharvest diseases cause considerable losses to harvested fruits and vegetables worldwide. Fresh produce suspected of harboring postharvest disease must be treated to control any pathogens present. Although there are various treatments to control postharvest losses by pathogens, the current community is eager to take safer and more eco-friendly alternatives to help with human health and reduce environmental risks. Ionizing irradiation is a promising phytosanitary treatment that has a significant potential to control postharvest diseases in use worldwide. Although almost 19000 metric tons of sweet potatoes and various fruits are irradiated each year in six countries to control postharvest disease, irradiation continues to be a debate, with slow acceptance by industries. Irradiation alone is not effective as a fungicide, and an over dose affects the physical properties of irradiated products. A combination of irradiation with other treatments such as heating, biocontrol agents, chlorination, and nano Ag particles is to enhance their effectiveness. Challenges to the use of phytosanitary irradiation are an avoidance of irradiated postharvest and cost of the irradiation facilities, and thus consumers still need to be educated on the principles and benefits of irradiation and prepare an optimum economy of scale for commercial use. In this review, we evaluated the current phytosanitary irradiation, and combination with various other treatments to minimize the postharvest losses.