• 한국유가공학회:학술대회논문집
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• 한국유가공기술과학회 2005년도 제61회 국제 유가공 심포지움
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• pp.11-19
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• 2005

Heat treatment is essential for hygienic safety and for extending shelf-life of milk. Heating of milk affects principally its physicochemical, nutritional and organoleptic properties. The most important changes are the decrease in whey protein solubility and the decrease in stability of casein micelles. Maillard reactions are also important and undesirable consequences.

• 한국의류학회지
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• 제20권1호
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• pp.98-112
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• 1996

Tho purpose of this study was to investigate hygienic and comfortable properties of socks. Materials are nine summer socks either frequently being worn or new products recently introduced to market. Three female and three male adults participated in this study. Through wearing experiment, the numbers of microbes on foot and sock were counted and subjective sensation was measured. The microbes were isolated and identified based on growth physiological characteristics. Nine different socks had smaller number of bacteria of sock than that of foot. The number of bacteria of sock was significantly related with that of foot in cotton socks, in piled cotton socks, in mesh cotton socks, in cotton+ nylon+ linen blended socks, in nylon socks. Total number of bacteria of tv cut finished socks was most small and total number of bacteria was increased in the order of ultra fresh finished socks, untreated cotton socks, nylon socks, cotton + nylon+ linen blended socks, mesh cotton socks, polyester+ nylcn+ linen blended socks, piled cotton socks, cotton socks. Total number of bacteria of cotton socks and piled cotton socks were significantly different from that of uv cut finished socks. Finished socks and .jocks has high air permeability had significantly small number of bacteria. Comfortable sensation in nylon socks and polyester+nylon+linen socks was significantly uncomfortable. The way socks finished and air permeability of .jocks affected theirs hygienic property, while fiber type of them affected comfortablene, is. Bacteria identified were Staphylo coccus aureus, S. au rice larir, S. cahn ii, S. ep ids midis, S. haemo Iyticus, S. h am in 2's. S.fapraphyticus, S. warnery, 1 cinetobater calcoaceticus bio. anitratus, p.reudomonas mendocina, p. paucimobilis, Flavimonas Q ryzihabitans (CDC Group VE-2), and Xanthomanas maltophina. Fungi isolated were Spicaria sp., Thrichoderma sp., Fusarium sp., Aspergillus sp., Epicoccum sp., Cladosporium sp., and Penicillium sp..

• 한국생활과학회지
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• 제18권3호
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• pp.749-756
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• 2009

Keeping abreast with the latest consumer's trends, industries are focusing on sensibility aspects of products to meet consumer's needs. The car(?) seat cover fabrics are more closely related to human senses than anything else. This study attempted to investigate which seat cover fabric can give good feeling to consumers and to analyze their characteristics. Twelve kinds of jacquard fabric used for seat cover were selected. The Kawabata Evaluation System was used to measure the mechanical properties of 12 jacquard fabrics, and tactile sensibility(TS), and preference(P) determined by subjective evaluation of 160 participants were also utilized. The stepwise regression analysis was made to select the most significant mechanical properties, and some models for predicting tactile sensibility and preference was developed. The results are briefly summarized as follows: the most important parameter to choose seat cover fabric is a "hygienic property" and the other parameters are 'materials with color fastness', 'compressive property', 'color', 'antibacterial property', 'easy-care property'. The LogSMD, LogB, LC, EM were selected as significant mechanical properties affecting tactile sensibility. Also, the LC, LogB, LogSMD, LogWC, LogMMD were selected as significant mechanical properties affecting preference.

• 복식문화연구
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• 제7권5호
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• pp.165-176
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• 1999

The purpose of this study was to evaluate the effect of various knitted fabrics of sports socks on their properties of hygiene and stability. Seventeen men\`s sports socks to represent five groups with different fiber content, knit structure, yarn fineness, and finishing were used. Properties of hygiene and stability of socks were determined. The results were as follows ; 1. Evaluation of Water, vapor and heat transport properties in socks with varing fiber content showed that cotton 100% socks had the highest drop absorbency, wickability, water absorbency and water retention. Polypropylene 100% socks had an excellent wickability and moisture permeability. Acrylic blend socks had the highest thermal resistance. 2. The greatest knit stretch and knit growth of socks having lower power were found to be with cotton 100% socks had the lowest stretch. Acrylic blend socks had a excellent stretch but low fabric growth, which could give a good fir sensation during wear. 3. The commerical antimicrobial finished socks showed excellent durability after repeated cycles of laundering. 4. Length and width shrinkages were found in all laundered samples during initial cycles due to rearrangement by mechanical relaxation. Shrinkages showed no further changes and reached equilibriums after 5 cycles. Cotton 100% or cotton blend socks showed lower dimensional stability than other socks during fabric care.

• 펄프종이기술
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• 제47권3호
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• pp.55-62
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• 2015

Paper mulberry fibers have been used as fibrous raw materials for manufacturing traditional handmade paper, hanji for a long time. Compared to wood pulp fibers, pulp fibers from mulberry bast tissue have some benefits in physical and chemical properties due to their high D.P (degree of polymerization), M.W (molecule weight) and long fiber length. Specially, Korean handmade hanji shows outstanding characteristics in mechanical tensile strength, folding endurance, flexibility and long sustainable conservation properties. Therefore, hanji is widely applied to daily supplies, hygienic goods, medical supplies, clothing industries and so on. Recently, the potential demand of mulberry pulp fibers is more and more increased on the strength of high application fields. This study was focused on the possibility of wastewater recycling in unit operation systems for the development of automated mass production line. The properties and environmental loads of wastewater from debarking, cooking, bleaching and screening process were analyzed by means of COD, conductivity, turbidity and solid materials. The wastewater from debarking and cooking process was comparatively high in pollution load, and would be treated by additional approaches of chemico-physical method.

• 대한가정학회지
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• 제26권3호
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• pp.79-91
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• 1988

The present survey was designed to find out the utilization status of korean traditional cookies and the evaluation degrees of their commercial products' quality subjects. The subjects were housewives randomly selected who lived in Seoul, Deajeon, Youngju city (Kyoung Buk Province area), and Sechon khun (Chung Nam province area). We performed this survey from November 16 to 28, 1987 by questionnaire method. The results obtained can be summarized as follows; 1) In the subjects' home, 25 kinds of Korean traditional cookies were used. All of them Youmilkwa and Kangjeong type were used more frequently than the other types and Jeonkwa, Dasik, and Suksilkwa were used scarcely. 2) Korean traditional cookies which were showed more than 20% of utilization ratio were follows; Yackwa (74.4%), Sanja (26.8%), Taraekwa (22.6%), Seban-kangjeong (21.7%). 3) On New Year's day, Korean traditional cookies were used more frequently than harvest festival day but their utilization ratio of western cookies was follows; New Year's day was 10%, and harvest festival day was 6.2%. 5) On ceremonial day, Youmilkwa and kangjeong type were used more frequently than jeonkwa, Dasik, and Suksilkwa type. 6) All of ceremonial days, korean traditional cookies were used most frequently on the 60th birth day and their utilization ratio was extremely low on the 100th day after birth, 1st birth day, and funeral day. 7) Generally western cookies were used more frequently than Korean traditional cookies on the birth day of children and adults. 8) Convinience (64.8%) was the most favored cause purchasing the commercial products but many subjects (37.0%) wanted to make the Korean traditional cookies at home. 9) All the quality properties of commercial products, taste, package, and storage property were favored but price and hygienic property were poorly evaluated by subjects. The evaluation about taste and package property of commercial products was affected by academic career (p<0.05), and shelf life was affected by age (P<0.01) significantly. And hygienic property was significantly affected by age and academic career respectively. (P<0.01).

• 한국식생활문화학회지
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• 제34권2호
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• pp.224-232
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• 2019

This study evaluated the physicochemical and microbial quality characteristic of seasonal commercial kimchi for hygienic safety levels. The pH of seasonal commercial kimchi was 3.84-6.36 and the titratable acidity and salinity of the samples were 0.21-1.16 and 1.19-1.54%, respectively. The content of nitrate and nitrite in the commercial kimchi were lower in the spring and summer, which was affected by acidic condition of the kimchi depending on fermentation. Heavy metal contents in commercial kimchi are not an issue because they were detected only at very low levels. The total aerobic bacteria and coliforms counts ranged from 5.25 to 8.44 Log CFU/g and 0.00 to 5.08 Log CFU/g, respectively. The total aerobic bacteria and coliforms were detected more in summer than in the other seasons. E. coli was detected in three of the samples tested. Food-borne pathogens were not detected in any of the samples except for B. cereus. B. cereus was detected in the fall in more than 70% of samples. These results suggest that commercial kimchi distributed in the fall maintain the quality properties and the microbiological safety of kimchi compared to the other seasons. Therefore, further studies as an effective distribution system for the particular seasons will be needed to guarantee the hygienic safety levels of commercial kimchi required by the consumers.

• 한국의류학회지
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• 제29권6호
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• pp.805-813
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• 2005

In recent years, greatly increased incidences of diseases made people more concerned about their hygienic environment. Since clothes are the closest environment to man, many methods have beef proposed to impart antimicrobial properties to the textiles. Benefits associated with incorporating antimicrobial properties in textiles include protection to the wearer from microbiological attack, and prevention of odor from perspiration. Silver has been known to kill 650 different disease organisms, however, nano-sized silver particles are known as skin friendly and does not cause skin irritation. In this study, we have examined the antimicrobial effects of cotton or polyester fabric, on which nano-sized silver particles were treated. Colloidal silver solution made by electrolysis of $99.9\%$ silver stick was more effective than that by reduction of $AgNO_3.\;0.7\%$ concentration of colloidal silver solution by electrolysis is helpful to give reduction of $99.9\%$ S. aureus and K. pneumoniae on a cotton fabric without the decrease of whiteness. Since the structures of fiber and fabric effect on their antimicrobial property, PET filament fabric didn't have sufficient antimicrobial properly. The fabrics treated with up to $5\%$ colloidal silver solution didn't have the properly of antistatic and electromagnetic shield.

• 한국식품과학회지
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• 제29권4호
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• pp.764-770
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• 1997

건강보조식품 가공원료인 스피루리나와 다시마 분말의 위생화를 위한 오존처리 및 감마선 조사가 오염 미생물의 살균효과 및 이화학적 품질특성에 미치는 영향을 조사하였다. 미생물 살균효과에서 7.5 kGy 선량의 감마선 조사는 대장균군, 곰팡이, 호기성 전세균을 검출한계 이하로 사멸시켰으나, 오존처리(18 ppm 농도, 8시간 처리)는 높게 오염된 미생물을 사멸시키는데 불충분하였다. 이화학적 품질특성에서 10 kGy까지 감마선 조사된 시료의 pH, 색도, 아미노산 및 지방산 조성은 무처리 대조시료와 차이를 보이지 않았으나, 오존처리된 시료에서는 pH, 색소 및 TBA값의 변화와 특히 지방산 조성에서 불포화 지방산의 심한 감소현상을 나타내었다. 따라서 신선초 분말의 위생화를 위한 살균처리 방법으로서 감마선 조사가 오존처리에 비해 효과적임을 알 수 있었다.

• 한국식품과학회지
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• 제36권5호
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• pp.711-716
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• 2004

북어의 미생물학적 품질개선 및 저장안정성을 평가하기 위하여 감마선을 적용하였으며, 방사선 조사 북어의 유통 및 교역관리에 필요한 열발광 검지방법을 검토하였다. 포장된 북어포의 초기 미생물 농도는 $10^4\;CFU/g$ 수준이었으나 $15^{\circ}C$ 내외의 조건에서 3개월 저장 후에는 $10^7\;CFU/g$ 수준으로 크게 증가하였다. 그러나 3kGy 감마선 조사구에서는 저장 초기기 및 저장 6개월까지도 검출한계 이하로 나타났다. 북어의 선도 관련 인자로써 갈변도, TBA가, VBN, TMA 및 관능적 특성을 조사 직후와 저장 중 평가해 본 결과, 조사선량에 따라 다소 변화가 확인되었으나 적정선량으로 조사된 시료는 저장 중 대조구나 5 kGy 이상 조사구에 비해 안정된 품질특성을 보여주었다. 북어의 방사선 조사여부 확인을 위한 열발광 분석 결과 비 조사구의 glow curve는 $280^{\circ}C$ 부근에서 매우 낮은 peak를 나타내었고 1 kGy 이상 조사구에서는 $200^{\circ}C$ 부근에서 선량 의존적인 높은 peak를 나타내어 감마선 조사 북어의 판별이 가능하였으며, 재조사 방법에 의한 TL ratio는 조사여부 판별의 신뢰도를 높여주었다.