• Bulletin of the Korean Chemical Society
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• 제30권5호
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• pp.1184-1186
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• 2009

• Journal of Ginseng Research
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• 제44권1호
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• pp.115-122
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• 2020

Background: In aged skin, degradation of collagen fibers, which occupy the majority of the extracellular matrix in the dermis, and changes of aquaporin 3 (AQP3) and skin constituents, such as hyaluronic acid and ceramide, cause wrinkles and decrease skin moisturization to contribute to dryness and lower elasticity skin. Red ginseng (RG) is used as a cosmetic and food material and is known to protect from UVB-induced cell death, increase skin hydration, prevent wrinkles, and have an antioxidative effect. But, in general, RG used as a material is the soluble liquid portion in the solvent, and the part that is not soluble in the solvent is discarded. Thus, we made the whole RG into microgranulation and dispersed in water to produce gel form for using entire RG, and it was named red ginseng NaturalGEL (RG NGEL). Methods: RG NGEL was investigated for matrix metalloproteinases inhibitory activity, induction of Type I collagen, AQP3, hyaluronan synthetase 2, serine palmitoyl transferase, ceramide synthase 3, and filaggrin expression and compared with RG water extract. Results: RG NGEL reduced the levels of UV-induced matrix metalloproteinases and increased Type I collagen in human fibroblast cells and upregulated AQP3, hyaluronan synthetase 2, serine palmitoyl transferase, ceramide synthase 3, and filaggrin expressions in human keratinocytes compared with RG water extract. Conclusion: RG NGEL has the potential as an effective reagent for antiaging cosmetics to improve wrinkle formation and skin hydration.

• Journal of the Korean Wood Science and Technology
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• 제50권1호
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• pp.31-45
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• 2022

After manufacturing the natural dyed actual size Hanji using 11 kinds of plant natural dyeing materials and 2 kinds of animal natural dyeing materials, the color characteristics and color change and color fastness after post-mordanting were compared and discussed. The hues of 13 types of natural dyed Hanji were black, PB, and RP, each with 1 type, YP with 3 types, and Y with 7 types. Among the natural dyeing materials, Chinese ink, indigo and Lac showed high color yield and color difference, and violet-root cromwell and gardenia seeds showed low color yield. The color fastness of Hanji dyed with turpentine diluted Ottchil, Pagoda tree seeds, Chinese ink and indigo was excellent, while that of gardenia seeds and violet-root cromwell were very poor. After post-mordanting of natural dyed Hanji with Al, Cu, and Fe mordants, the hue changes were show up the Alnus firma, clove, lac and cochineal. In addition, the color difference was very diverse and was overall the most biggest due to Fe mordant. After 72 hr. of UV irradiation on post-mordanting natural dyed Hanji, hue change was observed in 3 types and color fastness was improved in 8 types by post-mordanting. The Hue and color fastness are significantly different depending on the type of natural dying materials and post-mordants. Therefore, when dyeing Hanji with natural dyes, it is necessary to dye with sufficient knowledges and informations about the desired color and fastness.

• Bulletin of the Korean Chemical Society
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• 제30권9호
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• pp.2107-2110
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• 2009

• Bulletin of the Korean Chemical Society
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• 제29권11호
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• pp.2247-2251
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• 2008

• Bulletin of the Korean Chemical Society
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• 제31권4호
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• pp.1061-1063
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• 2010

• Food Science and Biotechnology
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• 제16권5호
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• pp.691-709
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• 2007

Concerns on environmental waste problems caused by non-biodegradable petrochemical-based plastic packaging materials as well as consumer's demand for high quality food products has caused an increasing interest in developing biodegradable packaging materials using annually renewable natural biopolymers such as polysaccharides and proteins. However, inherent shortcomings of natural polymer-based packaging materials such as low mechanical properties and low water resistance are causing a major limitation for their industrial use. By the way, recent advent of nanocomposite technology rekindled interests on the use of natural biopolymers in the food packaging application. Polymer nanocomposites, especially natural biopolymer-layered silicate nanocomposites, exhibit markedly improved packaging properties due to their nanometer size dispersion. These improvements include increased mechanical strength, decreased gas permeability, and increased water resistance. Additionally, biologically active ingredients can be added to impart the desired functional properties to the resulting packaging materials. Consequently, natural biopolymer-based nanocomposite packaging materials with bio-functional properties have huge potential for application in the active food packaging industry. In this review, recent advances in the preparation and characterization of natural biopolymer-based nanocomposite films, and their potential use in food packaging applications are addressed.

• 한국환경복원기술학회지
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• 제10권1호
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• pp.72-81
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• 2007

This study mainly aims at suggesting plans applicable to the outdoor of environment-friendly communities in Korea by leveraging more natural conditions and materials when creating an outdoor biotop for an environment-friendly community and generating material types and development techniques enabling a natural circulation system. To this end, materials used in the outdoor of environment-friendly communities and traditional residential areas in Korea and biotop materials found in natural areas were examined. First, when the case examples of environment-friendly communities were reviewed, biotop spaces and materials that may function as habitats were hardly found. Materials used in biotop were mainly man-made structures made of artificial or processed materials, such as concrete, stones, bricks, woods and steels. Meanwhile, the outdoor space of traditional Korean villages had stone walls, soil walls, rock piles and composite piles, which composed of natural materials such as rocks, soil and plants, that naturally formed porous spaces along with the introduction of plants and provided habitats for a variety of insects. In natural areas, naturally created biotop spaces, such as rock piles, log piles, old tree deployment, branch piles, hay stacks and defoliated leaves, were found. Meanwhile, when spaces and materials available for biotop creation were reviewed to create an environment-friendly residential complex, they were divided into fences and hedges, green spaces between parks and residential buildings, ponds and waterscape spaces, zones separating pedestrian walks and roadways, breast walls and slope boundary, plant box and pergola. For each space, materials used for creating biotops and that were found in traditional Korean residential areas and natural areas were applied and suggested.

• 한국의상디자인학회지
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• 제24권3호
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• pp.97-109
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• 2022

The purpose of this study is to examine the structural relationship among the pursuit benefits in clothing materials, the attitude toward natural dyeing products, and the purchase intent among consumers interested in natural dyeing products. For this study, 489 men and women in their 20s to 60s were surveyed, and the data was analyzed using SPSS 23.0 and AMOS 23.0 programs. The findings of the analysis were as follows. First, of the pursuit benefits in clothing materials, function and originality factors had a significant and positive impact on the purchase intent of natural dyeing products. Second, of the pursuit benefit of clothing materials, functions, sustainability, and originality significantly and positively impacted the emotional and cognitive attitude toward natural dyeing products. Third, the emotional and cognitive attitude toward natural dyeing products had a significantly positively impacted the purchase intent. Fourth, in the relationship between the pursuit benefits in clothing materials and the purchase intent of natural dyeing products, the emotional and cognitive attitudes toward natural dyeing products were shown to have partial mediating effects.

• 한국유기농업학회지
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• 제10권3호
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• pp.79-86
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• 2002

GB$_{10}$, Chitofarm 및 왕겨숯과 왕겨숯 液 등 天然物質을 가을 무 栽培圃場에 種子處理, 土壤處理 및 葉面撒布를 實施하여 收量과 成分分析으로 遂行한 實驗 成績은 다음과 같다. 1. 무 生育特性 중 株重, 根重, 根長 및 根莖에 있어서 Chitofarm 등 天然物質處理區가 無處理區에 대하여 大部分 有意差가 있었으나 天然物質處理區 사이에는 有意性이 없었다. 2. 무 收量에 있어서는 GB$_{10}$ 1%葉面撒布區가 1.7kg으로 check區 보다 75% 增收되었다. 3. 무 作物體 成分分析結果 T-N, $P_2O_5,\;K_2O$,CaO, MgO, Fe, Mn 및 Zn 등의 含量에서 天然物質 無處理區보다 多量이었으므로 品質向上에 效果的이었다.