• 생약학회지
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• 제21권1호
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• pp.83-87
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• 1990

In terms of regulatory toxicology, especially for the traditional Chinese medicines, problems can be arise from a fact that there is no distinctive barrier between herbal drugs and food/beverage. An example is that many kinds of Chinese herbal materials have been also used as tea materials in Korea, China, Japan and Vietnam. Sixteen tea materials (also used as herbal materials) were extracted with 70% ethanol and the extract further partitioned with chloroform and water. Those ethanol extract and fractions were subjected to the SOS-Chromotest to examine potential mutagenicity. It was found that ethanol extract of Chaenomelis Fructus (Chaenomeles japonica Lindley, 木瓜, Rosaceae) and both ethanol extract and water fraction of Cassiae Semen (Cassia tora Linne, 決明子, Leguminosae) showed relatively high mutagenic activities in SOS-Chromotest.

• Journal of Ginseng Research
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• 제6권1호
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• pp.30-37
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• 1982

This study was conducted to investigate the water vapor permeability of packaging film, Al- foil laminated paper, and sorption properties of dehydrated and powdered foods. The results are as fellows. 1. Absorption rate of each products was greately affeoted by physicochemical properties of foods rather than initial moisture contents of the products. 2. The absorption rate of each products were in the order of freeze dried coffee, spray dried coffee, freeze drie4 ginseng extract, spray dried ginseng extract, ginger tea, black tea, citrus juice Powder and ssang wha tea. 3. Most of the products such as freeze dried coffee, spray dried coffee, freeze dried ginseng extract, ginger tea and black tea have shorter than a month of shelf life. 4. The stability of the products were greatly affected by its desorption properties than the degree of desorption of moisture. 5. Water vapor permeability of packaging materials which are laminated Al-foil with polythylene and glassin paper were mainly affected of thickness of Al-foil and polyethylene.

• 신재생에너지
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• 제9권3호
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• pp.36-42
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• 2013

To secure raw materials of biodiesel production, the possibility of camellia (C. japonica L.) and tea (C. sinensis L.) seed oil was studied to produce biodiesel. In this research, crude oil contents and fatty acid compositions of seeds were analyzed by Solxlet and Gas chromatography (GC). The oil contents in the seeds of camellia were 69.8%~73.8%, and tea were 26.3%~29.4%. Among the fatty acids of camellia and tea oil, oleic acid was dominant. The unsaturated fatty acids accounted for 88.4% and 80.2% of the whole fatty acids of camellia and tea seed oil. Total seed oil content and fatty acid composition of tea seed were influenced by collecting date. Across maturation period, oil content of tea seed averaged 18.3% on $6^{th}$ September increasing to 27.9% by $11^{th}$ October. For largest seed yield and oil content, the optimum time to harvest tea is in middle october, and camellia is late september and thereafter. The extraction efficiency of oil from seeds by extraction methods was determined. Biodiesel were synthesized in 92.1~92.8% yields from camellia and tea oils by transesterification. The biodiesel was characterized by its physical and fuel properties including oxidation stability, iodine value and cold filter plugging point (CFPP). Oxidation stability of camellia was 8.6~8.8 hours and tea was 2.9~3.6 at $110^{\circ}C$. Camellia oil had considerably better oxidation stability and CFPP than tea oil.

• 한국식품영양학회지
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• 제31권3호
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• pp.416-424
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• 2018

The physiologically advantageous aspects of green tea have been identified recently and green tea has been a favorite drink of many people. Due to the increased awareness of green tea's positive effects on human health, the demand for foods containing green tea has increased. This has led to the development of diverse green tea-related beverages; thereby many companies in Korea have put a wide variety of manufactured green tea beverages on the market. However, the components within green tea beverages have not been examined in Korea yet. In this study, we investigated the contents of the physiologically functional materials found in green tea, such as catechin, catechin gallate, epicatechin, epicatechin gallate, epigallocatecin gallate, gallocatechin gallate and caffeine. Fifty-six green tea products purchased from the local grocery stores and cafes were analyzed using high performance liquid chromatography (HPLC) analysis. As a result, all tested products contained catechin and caffeine, although the amount of each component was largely different. The total amount of catechin derivatives in the manufactured green tea beverages purchased from cafes was 263.17 mg/L, while they were 61.99 mg/L in the beverages purchased from the local grocery stores. And, to the almost samples the amount of caffeine was proportional to the amount of catechin.

• Journal of Applied Biological Chemistry
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• 제55권2호
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• pp.95-101
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• 2012

본 논문에서는 오죽(Phyllostachys nigra Munro)의 잎과 죽순을 사용하여 차 가공공정을 통한 오죽잎차와 오죽죽순차가 제조되었고, 이들에 대한 영양성분 분석을 실시하였다. 뿐만 아니라, 일반적인 차를 음용하는 조건($80^{\circ}C$ 물, 10분)에서 이들 차로부터 얻을 수 있는 수용성 물질의 추출율과 총 폴리페놀 함량, 총 플라보노이드 함량이 가공되지 않은 오죽 원재료 및 마테차, 녹차와 비교되었다. 마지막으로 차 음료에 포함된 항산화능과 각 항산화 화합물을 탐색하고자 온라인, 오프라인 항산화 분석이 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and di(phenyl)-(2,4,6trinitrophenyl)iminoazanium (DPPH) 라디칼에 대해서 이루어졌다. 본 논문의 결과는 오죽으로부터 제조된 이들 차가 다양한 영양성분을 함유하고 있고, 건강에 이로운 전통차로 음용될 수 있음을 보여주었다.

• Journal of the Korean Wood Science and Technology
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• 제41권1호
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• pp.64-76
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• 2013

이 연구에서는 녹차-목재섬유 복합보드의 강도성능과 기능성을 보강한 건축내장재를 개발하기 위하여, 목재섬유에 녹차와 흑탄, 백탄, 활성탄 등 3종류의 숯을 혼합한 녹차-숯-목재섬유 복합보드를 제작하였고, 구성원료의 종류 및 그 배합비율이 복합보드의 정역학적 성능에 미치는 영향을 조사하였다. 녹차-숯-목재섬유 복합보드의 휨 강도성능은 백탄함유 복합보드에서 평균적으로 가장 높은 값을 나타내었으나, 숯의 종류에 따른 휨 강도성능의 차이는 크지 않았다. 그러나 그 값은 선행연구의 녹차-목재섬유 복합보드보다 현저한 휨 강도성능의 향상을 나타내었고, 녹차와 숯의 배합비율이 증가할수록 휨 강도성능의 감소가 확인되었다. 바인더로 사용된 요소수지의 종류에 따른 차이는 $E_1$급 요소수지를 사용한 복합보드가 $E_0$급 요소수지를 사용한 그것보다 높은 휨 강도성능을 나타냈지만, 양 수지간의 차이는 선행연구의 녹차-목재섬유 복합보드에 비해 현저히 감소하였다. 복합보드의 박리강도는 백탄 $$\geq_-$$ 활성탄 > 흑탄함유 복합보드의 순이었고, 백탄함유 복합보드에서는 목재섬유로만 구성된 대조보드와 거의 비슷한 값을 나타내는 것이 확인되었다.

• 한국응용과학기술학회지
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• 제36권1호
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• pp.1-12
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• 2019

돼지감자를 9번 찌고 9번 말려서 차를 제조한 다음 M사의 돼지감자차와 성분 및 기능성을 비교 분석하였다. 개발한 돼지감자차는 칼로리 342.27kcal, 탄수화물 73.87g/100g, 유리당 32.66mg/100g, 회분 6.80g/100g, 단백질 8.21g/100g이었고 무기물 총량은 2,785.67mg/100g, 칼륨 2,563.93mg/g, 칼슘 97.52mg/g, 마그네슘 88.78mg/g 등이었다. 돼지감자차의 유리당 총량은 32.66mg/100g이고 그중 fructose 17.40mg/100g, sucrose 9.03mg/100g, glucose 6.05mg/100g이었다. 돼지감자 차의 포화지방산은 30.34mg/100g, 4 불포화지방산은 69.66mg/100g이었고 그 중 linoleic acid 47.00mg/100g, palmitic acid 25.31mg/100g, linolenic acid 8.61mg/100g이었다. DPPH 라디컬 소거력은 개발한 차 34.2%, 비교용 M사차 5.2%, 지표물질 44.0%였다. ABTS 라디컬 소거력은 개발한 차 93.0%, M사차 61.9%, 지표물질 47.6%였다. SOD 유사활성은 개발한 차 2.7%, M사차 1.6%였다. 플라보노이드 함량은 개발한 차 2.8 fold, M사차 2.0 fold, 지표물질 1.7 fold 였다. 폴리페놀 함량은 개발한 차 38.2 fold, M사차 8.92 fold, 지표물질 14.0 fold였다. ${\alpha}$-Glucosidase 저해율은 개발한 차 9.83%, M사차 8.92%였다. 기호도는 1회 우린 것과 5회 우린 것을 비교하였다. 1회 우린 것을 기준으로 할 때 5회 우린 것의 기호도 중 색은 개발한 차 83.7%, 비교용 차 50.0%, 향기는 개발한 차 78.0%, 비교용 차 42.5%, 맛은 개발한 차 66.7%, 비교용 차 37.5%, 종합적인 기호도는 개발한 차 73.3%, 비교용 차 47.5%로 나타났다. 이같이 비교용 M사차는 우릴수록 추출 성분이 감소하여 5회 후에 종합적인 기호도는 46.3%로 감소한 반면 개발한 차는 감소폭이 적어서 73.3%를 나타냈다. 이같이 개발한 돼지감자차는 비교용 M사차 및 지표물질보다 항산화 작용이 강하고 유효 물질 함량도 더 많고, 기호성도 높으므로 질병 예방 및 개선 효과가 클 것으로 생각한다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권1호
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• pp.305-310
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• 2016

Background: Given the association between drinking hot tea and the risk of esophageal squamous cell carcinoma, this study was designed to determine the effectiveness of an educational campaign based on the Theory of Planned Behavior (TPB) in reducing hot tea consumption among a sample of Iranian female students. Materials and Methods: In this quasi-experimental study, 130 primary-school female students in Salas Babajani, Kermanshah, Iran were randomly selected. A two-month campaign based on TPB constructs was developed and conducted for the intervention group. Combined mass media approaches (such as posters, pamphlet, and brochure) with small group and individual activities were used to transfer the campaign messages. Also, five 40-minute instructional sessions for the students and one session for their parents and teachers were held. The hot tea consumption, attitude, subjective norms, perceived behavioral control and no intention to drink hot tea were variables which were measured at baseline and again after 4 weeks. Results: There was a significant improvement in the perceived behavioral control and intention to drink no hot tea variables in the intervention group as compared to the control group following the campaign. In addition, significant reductions were found for the hot tea consumption and favorable attitude toward drinking hot tea in the intervention group as compared to the control group. Conclusions: Conducting educational campaigns based on TPB variables may reduce hot tea consumption among Iranian students.

• 한국유기농업학회지
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• 제19권spc호
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• pp.17-20
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• 2011

Plant biomass is a huge carbon-complex that has potential as a nutrient. Therefore we extracted and separated useful materials for plant growth from tea leaf and stem. The pre-treatment process including high temperature ($200^{\circ}C$) and pressure (20-40 kgf/$cm^2$) was treated for several minutes and extracted at $120^{\circ}C$ for 30-60 minutes. After that the chemical compositions and ingredients were analyzed from that plant-nutrient. As a result of mineral contents, calcium and magnesium concentrations are higher than other minerals. Also the result of carbohydrates analyses has shown that the sugar oligomer consists of xylose(95.3%) and glucose(4.7%), and the sugar monomer consists in the order of xylose (52.7%) > manose (22.8%) > arabinose (10.8%) > galactose (10.2%) > glucose (3.5%). Before applied to field, in vitro plant growth system and formulation were examined. To evaluate the effect of the nutrients, both strawberry green-house and persimmon fields were used in this test. The treated persimmons were heavier than controls scored at 13-22%. In addition, the storage-period was extended in the treated strawberries. Interestingly in the treated strawberry, the contents of polyphenols were increased (38-57%). These results suggest that the plant-nutrient can afford to help for plant growth and storage, and it can be substituted for other commercial nutrients. In conclusion, this plant-nutrient may help to extend eco-friendly or organic farming in Hadong-gun area.

• 한국식생활문화학회지
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• 제4권1호
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• pp.53-58
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• 1989

1979년(年) 이전(以前)까지 찻감(다식품(茶食品))의 분류(分類)에는 사종분류법(四種分類法), 육종분류법(六種分類法), 십종분류법(十種分類法)이 통용(通用) 되었다. 그러다가 1979년(年) 이후(以後)부터는 다(茶)의 화학적(化學的) 성분(成分)에 의(依)한 육대(六大) 다류(茶類)의 분류법(分類法)이 등장(登場)하였다. 한반도(韓半島)에도 육대(六大) 다류(茶類)의 전래(傳來) 여부(與否)와 제다(製茶) 및 음다(飮茶) 여부(與否)를 각(各) 시대별(時代別)로 고찰(考察)함에 있어서, 신라시대(新羅時代)에 당(唐)나라로부터 전래(傳來)된 녹다(綠茶)인 병다(餠茶)의 풍습(風習)은 현대(現代)까지 전승(傳承)되고 있다는 것이 확인(確認)되었다.