• Journal of the Korean Wood Science and Technology
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• v.37 no.1
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• pp.12-18
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• 2009

This study was attempted to investigate indoor air quality of a wooden house. Emission characteristics of carbonyl compounds from indoors whose interiors were finished using ecofriendly materials were detected. From the results of the examination, the carbonyl compounds mostly consisted of formaldehyde, acetaldehyde, and hexaldehyde. Especially, formaldehyde accounted for the largest portion of the compounds at 25.6~30.5%. All the rooms except for R2-2 contained formaldehyde less than criteria of indoor air quality of newly-constructed houses. In addition, all the rooms except for room R1-3, contained acetaldehyde more than the level of $48{\mu}g/m^3$ recommended by Japan's Ministry of Health, Labour and Welfare. As a results of the different wall covering, the room R1-1 of Hwangto emitted relatively higher levels of carbonyl compounds than the room R2-1 of phytoncide. In addition, the room R2-2 of the bamboo charcoal panels emitted more carbonyl compounds than the room R1-2. The living room R1-3 of Japanese cypress (Cryptomeria Japonica) emitted lower levels of carbonyl compounds than other rooms.

• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.3
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• pp.658-665
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• 2007

Phyllostachys pubescens (Maengiong-Juk), a kind of the bamboo, was reported to have many beneficial pharmacological actions. in this study, of using 70% ethanol extract of Phyllostachys pubescens we investigated its efficacy on angiotensin converting enzyme (ACE) and antioxidant enzyme activities. In addition, vasorelaxant effect was examined in rat aortic rings. The inhibitory effect of ACE activity by Phyllostachys pubescens extract (PPE) was dose-dependently increased by 61.42% at 10mg/ml. PPE relaxed the pre-contracted rat aortic rings with 10$^{-6}$M phenylephrine, showing about 88% at 4.0mg/ml. Sprague Dawley (SD) rats were given different concentrations of PPE mixed in the drinking water for 10 weeks. PPE did not show any difference with control group in blood pressure, body weight (BW) and food intake. However, it revealed the highest total antioxidative effect at dose of 1.0 g/100 g BW in plasma by TEAC assay. Thiobarbituric acid reactive substance (TBARS) and protein carbonyl levels which are markers of tissue peroxidation, were significantly lowed at the same dosage. Furthermore, hepatic antioxidant enzymes such as total superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), glutathione reductase (GR) and catalase activities were also significantly increased by PPE (1.0 g/100 g BW). In conclusion, we suggest that PPE might have antihypertensive effect through increasing antioxidant activities.

• Journal of the Korean Wood Science and Technology
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• v.35 no.6
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• pp.83-90
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• 2007

This study aimed at examining the effect of rooms decorated by eco-friendly finishing materials in a newly built wooden house on the emission of indoor air pollutions. According to the results of examination, the levels of benzene, toluene, ethyl benzene and styrene in all the rooms were below criteria of indoor air quality of newly-constructed houses. The levels of natural volatile organic compounds (NVOC), anthropogenic volatile organic compounds (AVOC) and total volatile organic compounds (TVOC) in room R1-1 which had Hwangto wall covering on it, were relatively higher than in room phytoncide wallpaper covered R2-1. The room R2-2 where bamboo charcoal panel used for wall covering showed higher level of AVOC compared to the room R1-2. Living room R1-3 was found to contain less TVOC, compared to the other four rooms. In addition, the ratio of NVOC to TVOC in the living room was higher than in the other rooms. This seemed to be attributed to Cryptomeria Japonica the living room finished material.

• Food Science and Preservation
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• v.24 no.6
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• pp.871-878
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• 2017

The objective of this study was to compare antioxidant activities of green tea, rosemary, lemon and bamboo leaves extracts using three different extraction methods (80% ethanol sonication extraction, distilled water autoclave extraction, distilled water extraction at room temperature). As a result, green tea and rosemary extracts showed relatively high antioxidant activities compared with those of lemon and bamboo leaves. These green tea and rosemary extracts were subsequently added to soymilk and their mixtures were examined for antioxidant activities. Soymilk added with 10% green tea distilled water autoclave extracts and distilled water at room temperature extracts showed relatively high DPPH, $85.09{\pm}2.26%$, $84.38{\pm}1.97%$, and ABTS radical scavenging activities, $73.43{\pm}2.78%$, $81.34{\pm}4.78%$, respectively. On the other hand, soymilk added with 10% rosemary distilled water autoclave extracts showed remarkably higher DPPH radical scavenging activity while their ABTS radical scavenging ability was similar to that of non-added soymilk. In conclusion, our results suggest that the addition of green tea distilled water autoclave extracts, distilled water at room temperature extracts and rosemary distilled water autoclave extracts to soymilk could contribute to the development of added value soymilk products with increased antioxidant activities.

• Journal of the Korean Wood Science and Technology
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• v.32 no.2
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• pp.40-49
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• 2004

Phyllostachys pubescens planted in the Nambu Forest Experiment station in Jinju city of Gyongnam province was used, to investigate the physical and mechanical property of bamboo in this study. The ages of the P. pubescens were 1, 2 and 3 years, respectively. This experiment was carried out in August and January. The P. pubescens were divided into upper, middle and lower parts according to the growing points. The physical and mechanical properties of the P. pubescens were investigated before and after treatment of hot water and microwave irradiation. 1. The upper part of the P. pubescens indicated the highest static MOE according to the growing points. The range of the static MOE was from 70,000 to 110,000kgf/cm². 2. When P. pubescens were treated with hot water of 95℃, the ratio of softening was about 10~30%. 3. As microwave irradiation time was increased, the MOE values was decreased in both green and water-saturated bamboos. For the irradiation time of 20 and 30 seconds, the static MOE of P. pubescens was decreased up to about 50% comparing with non-treated.

• The Korean Journal of Community Living Science
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• v.21 no.2
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• pp.243-257
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• 2010

This study was conducted to search the health food intake behavioral intentions of male workers. The health-related behavior of 150 subjects were compared(smoke, alcohol drink, breakfast, BMI, sleep, exercise and health check). On the basis of the Theory of Planned Behavior, the factors health-food intake behavior were evaluated; there were normative beliefs, motivation for compliance, subjective norms, social influence factors, and barriers as perceived behavior control. The results were showed with five points by the Likert scale and Significance by t-test. The most frequently consumed health food was tea(3.40/4points) followed by healthy drinks(2.49/4). As behavioral beliefs, if consumption of 'nutritional supplements'(3.61/5) and 'fatigue recovery'(3.62/5) received the highest scores. As a result, the idea of 'nutritional supplements'(3.94/5) and 'fatigue recovery'(4.06/5) were the important aspects, but others were also positively evaluated. As a sub-factor of subjective norms on normative beliefs, The highest social groups to encourage consumption of health food were parents (3.93/5), and the lowest were doctors (3.02/5). The most influential people were doctors (3.67/5) and spouses (3.65/5). Barriers to consumption health food were side effects (1.09/5) and price (2.08/5). Taking Ginseng products and other processed foods (juice, honey, bamboo, etc.) were correlated with health concern (p<0.05). Taking traditional stamina foods was correlated with dietary habit recognition (p<0.05). Mineral intake was positively correlated with age. Healthy drinks was negative (p<0.05). Minerals and supplement consumption were correlated with the practice of healthy behavior (p<0.01).

• Korean Journal of Human Ecology
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• v.19 no.6
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• pp.1063-1070
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• 2010

This study examined 12 types of towels with differing fabric material, function, quality, printing, pile length, twist, etc. from a towel company which manufactures and distributes products domestically. After 3 months of use by consumers, a consumer satisfaction survey was administered and results analyzed. Four types of towels were assigned to each group and the towels were used every day for 3 months. Participant feelings after using the towel for the first time and after using it for three months were investigated. The questionnaire consisted of 26 questions on a 5-point Licket-type scale. The first 13 questions measured perceptions of absorption, touch, fine fiber loss, contamination, deformation, drying speed, and design. Other questions compared differences between the two towel types in terms of their material, function, quality, printing, pile length, and degree of twisting. Results showed that, with regards to weight, consumers preferred towels between 130~150g and a thickness of around 1.7~1.8mm. The bamboo towel was considered superior to the cotton towel in terms of sense of touch and did not happen linter after washing. The antibacterial towel was considered better than the cotton towel in terms of absorption but in terms of contamination, participants felt the antibacterial towel became dirty more easily than the cotton towel. We thought that it might be influence of the color of towel. Low-quality towels became stiffer and misshapen more easily than higher-quality towels. But the study showed that the consumers did not perceive significant differences in the towels' quality. Printed towels became thinner and their color changed more with washing. The consumers preferred the design of jacquard towels to printed towels. Towels with short piles was happened more linter than the towel with long pile after washing. Non-twisted towel were better than the highly-twisted towel in terms of sense of touch and absorption but the non-twisted towel happened more linter after washing and became dirty more easily.

• Journal of the Korea Fashion and Costume Design Association
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• v.16 no.3
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• pp.219-238
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• 2014

This study attempted to investigate present condition and product planning of global eco-fashion brands that harmonize fashion and sustainability. As research subjects, this study selected 97 oversea fashion brands mentioned in books related to eco-fashion, Black(2011), Brown(2010), Fuad-luke(2009). As for research methods, materials and ethical practices of these selected 97 brands through literature data and their internet site homepages. This study analyzed oversea eco-brands collected 26 British brands, 22 American brands, 36 European brands such as Germany, France, Italy, Sweden, Spain, Finland and so on, except Britain and 13 other regions including Japan, India, Canada, Mexico, and New zealand. In conclusion, the product planning characteristics of these oversea eco-fashion brands can be summarized as follows; community and fair trade, ecological and slow design, recycle, reuse, redesign, and new eco-models. Firstly, brands of 'community and fair trade' manufactured products through fair trade and local community's artisan by ethical practices with organic fabrics. Secondly, brands of 'ecological and slow design' pursued timeless design and multi-functional design as luxury eco-fashion styles. They used organic textiles, hemp, bamboo, soya, tencell, sea cell, and self-sustaining plants. Thirdly, brands of 'recycle, reuse, redesign' aimed for upcycling high-end fashion and used vintage clothes, textile scraps, PET, parachutes, tires, safety belts, advertising banner and so on. In addition, brands of 'new models as eco-fashion' suggested zero-waste cutting, recycling over-printing technology, new sustainable business model, and ethical practices in the supply chain of the fashion industry.

• The Research Journal of the Costume Culture
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• v.22 no.5
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• pp.823-833
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• 2014

The objective of this study was to take a closer look at the clothing benefits sought by breast cancer survivors in Korea. A qualitative descriptive study was conducted, using the focus group interview. Data was collected from members of online breast cancer forum. 18 participants were breast cancer survivors who had mastectomy or lumpectomy in their 30s~50s. The data was analyzed using content analysis in order to identify significant themes. The analysis indicated that benefits were sought after functional/comfort, health, feminity, and compensation were found. First, breast cancer survivors considered functional/comfort to be most important benefit so as to keep the body comfortable from the weather. Second, participants put the healthy body as the first priority and chose a well-being lifestyle and were likely to wear clothes made in healthy fabric, such as organic, bamboo or charcoal. Also, they preferred to look active by wearing sport brands or outdoorwear brands. Third, after the surgery, they experienced the sense of femininity loss and the sense of crisis as a woman. Single women and married women in early 30s recognized more seriously, and they tried to recover feminity by wearing clothes with feminine details. Forth, breast cancer survivor consumers tended to shop for the psychological compensation. In summary, consumers with breast cancer surgery, unlike general healthy women, did not sought to be economic, fashion, self-expression benefits, rather they sought health, femininity, and compensation benefits. Therefore, it seems necessary to develop proper products and marketing strategy to meet the said consumer's special needs.

• Journal of the Korean Wood Science and Technology
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• v.18 no.4
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• pp.53-64
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• 1990

This study was carried out to develop the traditional korean paper changphanji from the bast fiber of paper mulberry The results obtained were as follows: 1. The variations in the basis weight were remarkable, but there were no significant adverse effects on the tensile strength and thickness. 2. The stamping have contributed to the improvement of smoothness and the control of thickness. The automatic pressing system recommended to obtain good control of thickness. 3. The average density of the traditional korean paper changphanji was 1.06g/$cm^3$. 4. The changphanji developed in this study gave a clude, but excellent toughness and warm feeling. Some fiber lumps, dark spots and bamboo, screen marks were also obserded. 5. The tensile strength of four-fold sheet changphanji is highest and those of two-fold sheet changphanji is lowest. the lengthwise tensile strength was higher than crosswise one due to the fiber. 6. The elongation of three-fold sheet changphanji was highest 7. The water absorption of all products ranged from 11.3g/$m^2$ to 17.5g/$m^2$. 8. The wight loss by abrasion was 34.0%(four-fold sheet) 31.6%(three fold sheet), 31.0% (two-fold sheet)respectively. 9. Based on the results obtained. tensile strength and elongation, the four-fold sheet was excellent. the use of the bast fiber of paper mulberry as a raw material is attractive point which can not obtained from the commercial changphanji made from other raw materials.