• 한국식품과학회지
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• 제40권1호
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• pp.118-121
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• 2008

본 연구는 소금의 첨가수준을 저수준(1.5%)으로 고정시키고, 인산염 대체가능성이 있는 다양한 기능성 소재들의 수준을 달리하여 원료돈육의 가공특성, 유화안정성 및 육색 등에 미치는 첨가효과를 구명하였다. 기능성 물질의 첨가는 원료돈육의 일반성분과 pH에는 유의적인 영향을 미치지 않았다. 보수력과 가열 감량에 있어 후보 물질들과 인산염 처리구 간에 유의적인 변화가 나타났고, 구아검, 카라기난, 알긴산이 인산염 대체에 적적한 특성을 보였다. 유화안정성에서는 인산염, 알긴산과 구아검 첨가구가 유의적으로 높은 안정성을 나타냈어 이후 실제 가공품에의 적용가능성을 나타냈다. 이상의 결과에서 카라기난과 구아검의 경우인산염과 유사한 가공특성, 유화안정성과 육색을 나타내어 육제품 제조용 인산염 대체첨가물질로 가능성을 확인할 수 있었다.

• 한국키틴키토산학회지
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• 제23권4호
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• pp.220-227
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• 2018

Amyloid plaque is a product of aggregation of ${\beta}$-amyloid peptide ($A{\beta}$) and is an important factor in the pathogenesis of Alzheimer's Disease (AD). $A{\beta}$ is a major component of amyloid plaque and vascular deposits in the AD brain. The enzyme ${\beta}$-secretase is required for the production of $A{\beta}$; thus, prevention of the formation of $A{\beta}$ through the inhibition of ${\beta}$-secretase is a major focus in the study of the treatment of AD. In this study, we investigated ${\beta}$-secretase inhibitory activity of an Arctoscopus japonicus peptide. An Alcalase hydrolysate had the highest ${\beta}$-secretase inhibitory activity. A ${\beta}$-secretase inhibitory activity peptide was separated using ion exchange column chromatography (carboxy-methyl: CM, quaternary methyl ammonium: QMA) and reverse phase high performance liquid chromatography (RP-HPLC) on a C18 column. The $IC_{50}$ value of the purified peptide was $248.2{\pm}1.73{\mu}g/mL$. The ${\beta}$-secretase inhibitory peptide was identified as a six amino acid residue of Gly-Pro-Val-Gly-Ala-Pro (MW: 497.27 Da). In cell viability experiments, the final purified fraction, the carboxy-methyl ion exchange column fraction (CM-F1) showed no significant cytotoxic effect in SH-SY5Y cells at concentrations below $100{\mu}g/mL$ in 24 h. The results of this study suggest that peptides separated from Arctoscopus japonicus may be beneficial as ${\beta}$-secretase inhibitor compounds in functional foods.

• 공업화학
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• 제30권2호
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• pp.233-240
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• 2019

분자인식기술은 특정 분자를 고분자 매트릭스에 각인시켜 특정 분자의 선택성을 높이는 기술로 관심을 받아왔다. 이 연구에서는 Sulindac (SLD)을 각인시킨 키토산 기반 약물 전달용 필름의 흡착 및 방출 특성을 가소제, 온도, pH를 변화시켜 실험하고 그 결과를 관련 모델식으로 해석하였다. SLD 각인 고분자 필름의 약물 흡착은 Freundlich와 Sips식이 Langmuir식보다 더 잘 설명되었고 binding site 에너지 분포 함수는 SLD와 고분자 필름 간의 흡착 특성관계를 이해하는데 유용하였다. 그리고 SLD 각인 고분자 필름의 약물 방출은 Fickian 확산 거동을 보인 반면, 인공피부조건에서는 non-Fickian 확산 거동을 따랐다.

• Journal of the Korean Wood Science and Technology
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• 제49권6호
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• pp.658-666
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• 2021

A novel flame retardant and antibacterial composite membrane coating for wood surfaces was prepared by adding POSS-based phosphorous nitrogen flame retardant (later referred to as NH₂-POSS) and silver nanoparticles (Ag NPs) to chitosan (CS). The effects of NH₂-POSS content (mass fractions of CS 0%, 0.5%, 1%, 3%, 5%, and 7%) on the structure and properties of the composite membrane coating on wood were investigated. The composite film was prepared by the method of blending and ducting. Contact angle, tensile property and antibacterial effects of the composite film were measured, and infrared spectroscopy was used. The results show that the addition of NH₂-POSS can not only improve the toughness of the membrane, but also the flame retardancy of the membrane, which improves the application of the membrane in wood products. However, with the addition of NH₂-POSS, the transparency of the composite membrane was weakened. The inhibitory effect of the composite membrane on the growth of Escherichia coli was enhanced with the increase in Ag NPs. This research provides a foundation for the application of functional wood.

• 한국식품과학회지
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• 제38권6호
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• pp.779-784
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• 2006

기능성 강화를 목적으로 키토산 0.2%, 송이버섯 1.0%, 석류분말 1.2%, 산사추출분말 1.0%, 실크분말 1.2%, 은행잎추출분말 0.01%, 동아분말 1.2%, 마늘유 0.2%, 홍국분말 1.2%를 각각 첨가하여 고추장을 제조하였다. 각각의 소재가 고추장의 숙성에 미치는 영향을 조사한 결과 45일간의 숙성 기간별 pH, 산도, 포르몰태 질소함량, 색도의 변화는 소재 첨가구와 control 간에 큰 차이가 없었다. 항산화활성은 0.2%의 마늘유 첨가구가 control에 비해 약 2배 증가하였고 ACE저해활성은 1.2%의 실크분말 또는 0.01%의 은행추출분말 첨가 시 control에 비해 약 2배의 효과가 있었다.

• 패션비즈니스
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• 제15권2호
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• pp.107-119
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• 2011

The rate of disposable diaper usage has been increased continuously from convenience of disposable diapers and increment of women's entry in workforce. However, a new perspective toward disposable diapers has been come to the fore in various sides like babies' health, environment, and cost. Furthermore, cloth diaper has started to attract more attention. Since parents and grandparents pay more attention to children as birth rate dropped, they tend to purchase expensive goods if the quality or design of the goods is worthy enough. Therefore, this study has the purpose in presenting the basic data for developing functional and pleasant cloth diaper with analyzing the consuming patterns (convergence in nature, health and technology) and cloth diaper characteristics. The research on the actual condition about children cloth diapers and environmental-friendly materials is as follows. Firstly, as a result of analyzing pros and cons about disposable diapers and cloth diapers, the cloth diapers are estimated to have better health, environment, and cost factors than disposable diapers, only excluding convenience. Secondly, as a result of examining patent registered diapers, the disposable diapers have been improved from shape-centered development to well-being material development, and the cloth diapers have mainly developed functional shape-centered. Thirdly, as a result of analyzing children's goods made with environmental-friendly materials, the children's clothes already use organics and natural resources like beans, bamboo trees, ginkgo, and chitosan. Recently, the diaper industry starts to pay attention to environmental-friendly because the skin ailment from environmental pollution has been an issue. To conclude, children's cloth diaper should be appropriate to their body shape and optimized to have convenient form and functional materials. If environmental-friendly materials are used, quality, functionality, various demands from customers and vitalization of goods industry will be all satisfied.

• 한국의류산업학회지
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• 제14권5호
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• pp.866-877
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• 2012

The natural dyeing of hanji cotton fabrics with guava leaf extract was investigated. The temperature and time of dyeing were $40^{\circ}C$ and $90^{\circ}C$ for eighty minutes, respectively. In addition, the dyebath has been set at pH 5. Sn pre-mordanted fabrics showed the highest K/S value. Regardless of dyeing temperature, K/S values were high when Al, Cu, Fe-mordanted fabrics were dyed in post-mordanting and Sn-mordanted fabrics in pre-mordanting. The dyeing equilibrium was shown at the fourth time of repeated dyeing. In the processing of hanji cotton fabrics, K/S value was high when hanji cotton fabric was treated with soybean milk at $90^{\circ}C$. Similar K/S value of dyeing was shown when fabrics were processed with chitosan, regardless of dyeing temperature. High K/S value of dyeing was seen when fabrics processed with gallnut tannin at 40. Fabrics dyed with acidic water extract showed yellowish color. Fabrics dyed with alkaline water extract showed reddish color, and fabrics dyed with ethanol extract showed greenish yellow color. In case of Sn-mordanted fabrics, the washing fastness level was between 3 to 4, and other dyed fabrics showed low fastness. The dry cleaning fastness also showed very excellent result with level 4-5. The rubbing fastness of the fabrics was better in dry rubbing than in wet rubbing. For the light fastness, all dyed fabrics showed low fastness. For antibacterial activity, the dyed fabrics with guava leaf extract showed 99.9% of high antibacterial activity. Hanji cotton fabric maintained certain deodorization in the state of raw fabric. All dyed fabrics showed higher UV protection rate than control fabric.

• 복식
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• 제57권5호
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• pp.58-71
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• 2007

This study conducted a survey to find out atopic dermatitis patients' required performance and preference in design factors to develop spring/summer(S/S) knitwears preferred by atopic patients. On the platform of achieved information from statistical analysis, S/S knitwear samples for atopic patients were designed and constructed with cotton/Seacell(R) blended yarn, And subjective wearing sensation were evaluated comparing the samples and the commercial products made with cotton/chitosan blended yarn, trying to help producing more comfortable S/S knitwears for atopic patients. SPSS 12.0 program was used for frequency analysis, Chi-square analysis, ANOVA, and Duncan test. The result was as follows; For comfort of S/S knitwears, atopic patients most considered skin care property. Atopic patients preferred simple and basic knitwear in light color with thin and soft fabric such as plain knit. The preferred style was that 'appropriately fit with suitable ease'. They also preferred 'closed front'; 'boat neckline' and 'V neckline'; 'raglan sleeve' and 'set-in sleeve'. For hem trim, they preferred 'rib' structure. Male preferred simple and plain style with 'round collar' and 'tubular or rib trim", while female preferred sophisticated and characteristic style with 'set-in sleeve' with 'rib trim'. Under the circumstances with insufficient functional knitwears developed, this study tried to develop comfort S/S knitwears for atopic dermatitis patients and the developed knitwears showed as good as or better performance in wearing feeling, fitting, and appearance than the previously developed functional goods.

• 한국산학기술학회논문지
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• 제3권3호
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• pp.216-220
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• 2002

신고배의 저장성에 미치는 가식성 코팅제의 효과를 조사하고자 연구하였다. 신고 배의 저온저장 18주 후 무게는 저온상태에서 11% 정도의 감량이 나타난 반면, 코팅 처리구에서 약간 적은 감량을 보였고 경도는 저온상태에서 보다 코팅 처리구에서 높았고 가용성 당 함량(SSC)도 같은 경향이었다. Hunter 'L' 값은 코팅 처리구에서 감소가 비교적 큰 것으로 나타났다. 저온 처리구의 호흡률은 저장 14주 이후 다소 증가하는 경향을 보였고 에틸렌 발생은 함량이 저장초기에 에틸렌 발생이 높았다. 저온 처리와 코팅 처리 시 모두 저장 10주째까지 높은 시장성을 유지하였고 저온 처리구에서 저장 12주째까지 시장성 지수 3 이상을 나타내 코팅 처리에 비하여 품질이 우수하였다. 코팅 처리구는 코팅 두께로 기인된 과육내 고 이산화탄소 장해로 과피 흑변이 나타나 저온저장처리에 비해 시장성이 떨어졌다.

• 대한영양사협회학술지
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• 제10권1호
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• pp.58-64
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• 2004

This study was performed to investigate the kinds of health food advertised and sold through media like printed matter, TV broadcasting or internet. It was found that fifty three percent of the health food was circulated through internet, 27% through printed matter, 9% through TV Broadcasting. When the health foods was classified, the proportion of special purpose nutritious foods was 36.1%, health aid foods 33.9%, uncooked powdered foods 18.5%, functional foods for health 4.9%, Ginseng products 3.9%, and tea 0.9%. The special purpose nutritious foods was composed of 59% of nutrition supplementary foods, 24% of dietary fiber foods, 9% of weaning foods, 7% of milk formula and 2% of HCA. Vegetable extracts occupied 21.1% of health aid foods, yeast 7.5%, mushroom extracts 7.0%, chitosan 6.2%, aloe 5.3%. Dried powdered type health food occupied the highest proportion. The other type were capsule(18.8%), tablet(18.1%), and liquid type(16.4%). When the health food was classified with health claim, the proportion of "nutrition supplementation" was the highest (23.9%), "diet" 14.9%, "ergogenic"(18.8%), "promoting bowel movement" 7.8%, "growth" 5.7%, "regulation of blood sugar" 4.5%, "improving of immunity"(2.4%) and anti-aging effect(2.4%).