• Korean Journal of Food Science and Technology
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• v.33 no.5
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• pp.514-520
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• 2001

Naturally occurring sulfur dioxide in medicinal herbs(crude drug materials) and its origin was investigated. Sulfur dioxide content in 28 kinds (101 samples) of medicinal herbs was studied by two different methods, Monnier-Williams and acid-distillation ion chromatography. Generally, less than 5 ppm of sulfur dioxide was found from the tested herbs. In some herbs, Monnier-Williams method showed higher level of sulfur dioxide than acid-distillation ion chromatography probably due to the presence of volatile organic acid presence in herbs. Naturally occurring sulfur dioxide measured in medicinal herbs may be derived from sulfur compounds of medicinal herbs.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.6
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• pp.1045-1051
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• 2021

Eighty-nine different types of commercially salt-fermented fishery products comprising various raw materials were analyzed for total aerobic bacteria, number of coliform bacteria, fecal coliform, and Escherichia coli. The food-poisoning bacterial content of the samples was investigated using next-generation sequencing. The mean mass of total aerobic bacteria in Jeotgal was 6-1.8×10⁹ CFU/g, and that in Aekjeot and Sikhae was 4-2.2×10⁵ CFU/mL and 1.9×10⁵-8.4×10⁸ CFU/g, respectively. Coliform bacteria were detected in 9 (28.1%) of 32 Jeotgal samples; 15 (46.8%) of 32 seasonal Jeotgal samples; and in 5 (55.5%) of 9 Sikhae samples. Fecal coliform and E. coli were not detected in 86 of the 89 samples. Yersinia enterocolitica was detected only in Galchi jeot (salt-fermented hairtail) (1 type) and not in other Jeotgal samples. These results contribute to our knowledge regarding the bacterial stability of salt-fermented fishery products.

• Journal of the Korean Society of Food Culture
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• v.24 no.5
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• pp.467-477
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• 2009

This study was conducted to investigate and analyze food related and space related elements of popular Vietnamese restaurants in Hong Kong to identify restaurant images related to food, to examine how Vietnamese traditions are applied to such restaurants, and ultimately, to get their implications for us. Luxury Vietnamese restaurants in Hong Kong tended to be located in major office buildings and famous shopping malls in the downtown area; therefore, they were highly accessible to foreigners. In addition, most Vietnamese restaurants were quite formal in size or atmosphere. The food-related elements of the luxury restaurants reproduced traditional menus, but the table setting and service generally adopted a formal Western style setting. The presentation of foods was also creative and contemporary, to suit international customers' tastes. Regarding the spatial elements, restaurants serving traditional menus had interiors influenced by the French colonial period, while those serving contemporarily adapted menus had interiors with simple contemporary images emphasized by Vietnamese traditional decorations. These characteristics allowed foreigners from diverse countries to access the restaurants without a sense of rejection. Casual restaurants were primarily exposed to many people on busy roadsides, but they tended to be inferior in terms of size and quality. Apart from size and price level, food-related elements failed to reflect Vietnamese unique traditional characteristics. The outward appearance consisted of basic construction materials (glass, chassis, and bamboo) instead of those representing Vietnamese architecture. Additionally, the interior of the casual restaurants contained traditional elements or objects more frequently than luxury restaurants, but they looked rather disorderly and lacked harmony. Overall, the image of casual restaurants was degraded by the use of cheap and low quality finishing materials and furniture. The results of this study may be useful for organizations promoting the Branding of Korea or businesspeople and designers promoting the globalization of Korean foods.

• Food Science and Preservation
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• v.30 no.4
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• pp.617-629
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• 2023

Reactive oxygen species are the byproducts of metabolic processes in the body, However, excessive amount may cause side effects such as cancer. Therefore, to reduce the production of these species, but their long-term administration at high doses may induce side effects. Hence, natural materials with antioxidant activities are attracting attention. Two of these natural materials are soybean sprouts and Hovenia dulcis Thunb. fruits, but few studies have evaluated the effects of their combination. Thus, we prepared a soybean sprout extract containing 1.5% H. dulcis Thunb. fruit concentrate (BHM) to develop a functional food material derived from natural products and then confirmed its physicochemical properties and physiological activity. Among the organic acids detected in BHM, malic acid exhibited the highest content of 1,451.03 ppm, and the main free sugars were glucose (645.48 ppm) and fructose (738.11 ppm). Taurine was the most abundant free amino acid at a concentration of 11.95 ppm, followed by those of arginine (10.97 ppm) and glutamic acid (10.16 ppm). Analyses of the mineral components revealed large amounts of Zn and Fe in BHM, and the respective total polyphenol and flavonoid contents in BHM were 957.16 and 601.93 ppm. The DPPH radical and H₂O₂ scavenging activities and reducing power indicated excellent antioxidant efficacy compared to the positive controls. Furthermore, blood alcohol and acetaldehyde concentrations were measured to confirm the hangover-relieving effects of BHM, with both significantly decreased (p<0.05). BHM displays potential for development as a functional food, and the results of this study may be used as basic data in further research.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.30 no.2
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• pp.141-147
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• 2024

The objective of this study was carried to compare the effects of different packaging and loading materials and types on the cold storage of onions. The research was conducted for over a period of six months. Onions were divided into three groups based on the packaging materials and types: mesh bag (control), ton bag (TB), and wire mesh pallet (WMP). Parameters such as moisture content (%), total soluble solids (ºBrix), Hunter-color value, rotting rate (%), and hardness (g/force) were measured and analyzed. The results of the experiment demonstrated that there was no significant differences in onions' quality between TB and WMP and the control, respectively. This study showed that TB and WMP can be used as an alternative to controls to extend the storage-life of onions and keeping quality during long-term cold storage. Furthermore, WMP packing and loading type could be replaced to conventional storage method with better efficiency in logistics of smart APC (agricultural product processing center).

• Food Science of Animal Resources
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• v.40 no.6
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• pp.863-880
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• 2020

Studies conducted in the past decade related to the use of natural antioxidants in meat products revealed the prevalent use of plant-based antioxidative materials added as powders, extracts, or dried or raw materials to meat products. The amount of antioxidative materials varied from 7.8 ppm to 19.8%. Extracts and powders were used in small amounts (ppm to grams) and large amounts (grams to >1%), respectively. Antioxidative materials used in meat products are mainly composed of phenolic compounds and flavonoids, which are able to inhibit lipid peroxidation of meat products, thereby preserving meat quality. However, the main ingredients used in processed meat products are the traditional additives, such as sodium erythorbate, sodium hydrosulfite, and synthetic antioxidants, rather than natural antioxidants. This difference could be attributed to changes in the sensory quality or characteristics of meat products using natural antioxidants. Therefore, novel research paradigms to develop meat products are needed, focusing on the multifunctional aspects of natural antioxidants.

• Preventive Nutrition and Food Science
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• v.7 no.1
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• pp.18-21
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• 2002

The extract of Ginkgo biloba leaves was measured for inhibitory activity against xanthine oxidase. Aceton extract of G. biloba leaves showed strong inhibitory activity. Inhibitory activities of the fractionated extract were in the order of water > ethyl acetate fractions. Two fractions exhibiting strong inhibitory activities ware further purified via repeated silica gel, Amberlite IRN-78, Polyclar AT, and Sephadex LH-20 column chromatographies. Active components were isolated and identified through $^1$H-NMR and $^{13}$ C-NMR. The compounds were characterized as kaempferol 3-Ο-$\alpha$-(6$^{"′}$-p-coumaroylglucosyl-$\beta$-1,4-rhamnoside), and quercertin 3-Ο-$\alpha$-(6$^{′}$-p-coumaroylglucosyl-$\beta$-1,4-rhamnoside).

• Preventive Nutrition and Food Science
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• v.10 no.1
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• pp.68-73
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• 2005

A significant number of cases of illness has been attributed to food consumption in restaurants, and as the number of meals eaten away from home continues to rise, the potential for large-scale, foodborne illness outbreaks will continue to increase. It is critical that hospitality and culinary arts students preparing for careers as professionals in foodservice establishments or restaurants have an appropriate understanding of food safety. The level of food safety knowledge was similar between hospitality and culinary arts students, and an analysis of 266 questionnaires indicated that specific areas, such as hand washing, cross contamination in refrigerator, reheating leftovers, refrigeration of cooked food within two hours, proper temperature of food storage, using of thermometers to monitor temperatures, proper egg handling, and possible food borne illness caused by fruits, should be the primary focus of educational resources. Student respondents showed a higher awareness level of responsibility in their roles for food safety, but more emphasis needs to be given to the correct understanding of food safety issues. Hospitality and culinary arts educators can use this precise information to develop food safety education materials and programs to assist in the prevention of foodborne illness and to knowledgeably educate their graduates about food safety.

• Journal of Environmental Health Sciences
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• v.42 no.6
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• pp.465-477
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• 2016

Objectives: This review examined the scientific evidence regarding the impact of climate change on food safety. Methods: The impact of climate change on food safety was assessed based on a survey of related publications reported in the past 20 years. The terms used for literature selection reflect three aspects: climate change; food; and food safety. Results: Climate change is expected to affect the key elements of food production - water and climate. These impact on food safety through many different pathways. Directly, food shortages according to the population grovoth result in a food security/food supply problem, These relationships are commonly understood. The indirect impacts include an increase in food-borne diseases and pathogens, increased mycotoxin production, and increased risk of pesticide residues in foods due to greater use of pesticides in response to warming and increased precipitation and the accompanying diseases in certain crops. Field studies and statistical and scenario analyses were performed to provide evidence. However, quantification of these relationships is still lacking. Conclusion: Adaptation measures at the local and community levels are essential since the pressures from weather and climate events may differ according to region and sector. It is recommended that we go beyond empirical observations of the association between climate change and food safety and develop more scientific explanations. We also need to explore alternative materials for bioenergy demands in order to improve sustainability.

• Journal of the Korean Society of Food Culture
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• v.17 no.5
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• pp.543-550
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• 2002

The purpose of this study is to provide basic materials for food service consumption culture by proving the problem with food service purchase and its improvements. For this purpose, it was attempted to grasp university students' food service purchase behavior and level of satisfaction with it and to investigate the factors influencing their level of satisfaction with food service purchase. The questionnaire research was conducted for university students living in Seoul and Chungcheong provinces. 453 questionnaires obtained from them were used for final analysis. As a results, the following finding were obtained: 1. In case of university students, their level of consumer satisfaction with food service purchase was shown to be the score of 37.99(63.06/on the basis of 100 points). They showed the highest level of satisfaction with quality, followed by facility and atmosphere, service, price and the like. 2. The factor having the greatest influence on university students' level of satisfaction with food service purchase was shown to be gender(female), followed by food service place(Korean food restaurant, Chinese food restaurant, Western food restaurant, flour-based meals restaurant), consumer attitude, average monthly food service cost.