• Journal of Applied Biological Chemistry
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• v.55 no.2
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• pp.95-101
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• 2012

Nutritional components of Ojuk leaf tea and Ojuk shoot tea prepared from the leaves and shoots of black bamboo (Phyllostachys nigra Munro) by tea manufacturing process were evaluated. In addition, the extraction yield of water soluble components from these teas in the general tea brewing condition (water extraction in $80^{\circ}C$ for 10 min.) and the contents of polyphenol and flavonoid were compared with not only the dried raw materials, but also green tea and mate tea. Finally, offline and online scavenging activities against 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and di(phenyl)-(2,4,6 trinitrophenyl)iminoazanium free radicals were investigated to evaluate the antioxidant activity and explore the components showing ABTS free radical scavenging activity from tea infusion. These results demonstrated that these teas from black bamboo contain various nutritional components and can be used as traditional tea beneficial to human health.

• Korean Journal of Heritage: History & Science
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• v.48 no.2
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• pp.64-81
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• 2015

The Treasure No.165 of Ojukhen is a separate house(別堂) which was still remained as a gentry house in the earliest day. The formative aspects have the important meaning as the history of Korean architecture. Specially the place is famous for Shin, Saim-dang(申師任堂) gave birth to Yulgok(栗谷) Yi, I(李珥). The house was built by one's family of Gangneung Choi clan(江陵崔氏) but Son-in-law inherited the house because there was the practice of inheritance by equal distribution and the mother of Shin, Saim-dang, Yongin Lee clan(龍仁李氏) inherited Gwon, Cheo-kyun(權處均) who was her hrandson under the condition of looking after the tomb. The reason why house name was Ojukhen is that Gwon, Cheo-kyun's another name is Ojukhen. Ojukhen is cultural properties which showed the change of practicing inheritance and ancestral rites. Ojukhen has the special relationship of one's grandson and did not have such of immediate family. This is because there were customs husband had to go to married woman's house and live there during short time. Yongin Lee clan and Shin, Saimdang has lived in the Ojukhen. Yongin Lee clan lived there after marrying. Shin Saimdang also spent a time of living her house after marrying and his son(Yi, I) was born in the place. Yi, I spent their time under Yongin Lee clan and one's mother's parents. Therefore he had a good relationship with his maternal grandmother. This is why his maternal grandmother became a descendant offering sacrifice to his ancestors. The reason why Gwon, Chen-kyun looked after the tomb of Yongin Lee clan was also Gwon, Hwa(權和) became sonin-law who lives with his wife's family. Ojukhen is the showcase of finding the marriage and living manage in the early Joseon Dynasty. The most village of Buk-Pyeong(北坪村) in the Gangneung called by Yi, I's one's mother's parents' home. Since after, the place was changed as the clan village immediate family of Andong Kwang clan(安東權氏) of Gwon, Cheokyun of Chumilgong family(樞密公派). After 17C, there were social historic changings focused on relative group. Ojukhen was the start of changing the clan village. Ojukhen is cultural properties which showed inheritance, relative, marriage in the turning point of Joseon Dynasty.

• Korean Journal of Food Science and Technology
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• v.53 no.3
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• pp.296-303
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• 2021

The antioxidant and anti-neuroinflammatory activities of water, 30, 70, and 100% ethanol extracts of leaves of three different species of bamboo (Phyllostachys nigra, P. bambusoides, and Sasa borealis) were investigated. The levels of total polyphenol and flavonoid were measured, and antioxidant activity was evaluated using various antioxidant assays (DPPH, ABTS, and FRAP). Lipopolysaccharide (LPS)-induced BV2 microglial cell activation was used to evaluate the anti-neuroinflammatory properties of the bamboo leaf extracts. Treatment with both aqueous and ethanolic extracts showed no cytotoxicity in BV-2 microglial cells. Pre-treatment of BV-2 cells with bamboo leaf extracts significantly inhibited LPS-induced excessive production of nitric oxide in a dose-dependent manner. Moreover, phytochemical analysis based on the extraction solvent showed that caffeic acid, p-coumaric acid, and tricin are the principal constituents of all three bamboo leaf extracts. Therefore, our findings suggest that bamboo leaf extract contains potent antioxidants and anti-neuroinflammatory compounds that can be used as potential therapeutic agents for the treat neuroinflammatory diseases.

• KSBB Journal
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• v.23 no.4
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• pp.297-302
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• 2008

In this work, the amounts of Flavone C-glycosides homoorientin, orientin extracted from Black bamboo by various ultrasonic waves frequency (35, 72, 170 KHz, 300 Watt $\pm$1) time (15, 30, 60 min) and temperature ($25^{\circ}C$) were compared using 50% aqueous ethanol solution. And describesanalysis of the antioxidant potential of Black bamboo using an high-performance liquid chromatography (HPLC) on-line $ABTS^+$antioxidant screening method. In conjunction with the analysis of their 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid ($ABTS^+$) radical scavenging ability. The optimum operating conditions were experimentally determined to analyze the Flavone C-glycosides homoorientin, orientin in the pretreatment ultrasonic extracts. From the results, the effect on extraction yield of variations in frequency, solvent composition and extraction time was investigated. The highest yield of Black bamboo was obtained by ultrasonic waves with a frequency of 72 KHz and an extraction time of 60 min, The extraction frequency 35 KHz ($25^{\circ}C$), time 30 min was selected as an optimal antioxidant activity condition.

• Food Science and Preservation
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• v.21 no.4
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• pp.560-564
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• 2014

To investigate the natural antioxidant and antimicrobial phytochemicals from black bamboo (Phyllostachys nigra MUNRO) leaves, the solvent fractions from crude methanol extract were made with n-hexane, ethyl acetate, and butanol, and their antioxidant and antimicrobial activities were determined. The antioxidant activities were examined by 1,1-diphenyl-1-picrylhydrazyl (DPPH) method and ferric ion reducing antioxidant power (FRAP) method, and the antimicrobial activities against Staphylococcus aureus were tested by paper disc agar diffusion method. Total phenolic contents and total flavonoid contents of the solvent fractions were also determined. The ethyl acetate fraction with the highest total phenolic contents among all fractions showed the strong antioxidant activities by DPPH method and FRAP method, and antimicrobial activities against S. aureus at all test concentrations. Caffeic acid, ferulic acid, quercetin, and kaempferol were analyzed by HPLC in the ethyl acetate fraction from black bamboo leaves by the comparison with the standard chemicals. It is supposed that the ethyl acetate fraction from black bamboo leaves could be used as natural preservatives in the food industry.

• 프린팅코리아
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• v.14 no.9
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• pp.128-129
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• 2015

강원도(도지사 최문순)가 주최하고 강릉시(시장 최영희)가 주관한 '오대산 사고본 조선왕조실록 의궤 특별전'이 8월 6일부터 31일까지 강릉 오죽헌 시립박물관에서 열렸다. 이번 특별전은 광복 70년을 맞아 문화재청(청장 나선화)의 후원으로 진행됐다.

• 건강소식
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• v.35 no.1
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• pp.24-25
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• 2011

살면서 억울한 일이 참 많은데, 그중 하나가 힘든 다이어트 중에 물만 마셔도 살이 찌는 경우가 아닐까 싶다. 전문가들 역시 물이 다이어트에 좋다고 권장하는데 물만 먹어도 살이 찌는 사람들, 그 속이 오죽할까. 이런 사람들은 호르몬 이상을 의심해볼 필요가 있다.

• 건강소식
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• v.36 no.10
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• pp.22-24
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• 2012

"휴대전화를 어디에 뒀더라?", "차 키를 어디에 뒀지?", "가스레인지 밸브를 잠갔던가?" 방금 한 일인데도 기억이 가물가물하고, 돌아서면 깜빡깜빡하는 건망증. 40, 50대가 되면 누구나 한두 번쯤 경험하는 일들이다. 오죽하면 중년의 건망증이 유머의 단골 소재가 됐을까. 처음 한두 번은 웃어넘기지만, 깜빡깜빡하는 일이 너무 자주 반복되면 슬그머니 '혹시 치매 초기 증상이 아닐까?' 하는 걱정이 든다. 이 건망증, 정말 웃어넘겨도 괜찮은 걸까.

• Applied Chemistry for Engineering
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• v.21 no.1
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• pp.6-10
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• 2010

In order to research the effect of solvents of extract on biological activities of Phyllostachys nigra Munro, antioxidative activity, superoxide dismutase (SOD)-like activity, nitrite scavenging activity, tyrosinase inhibitory activity, angiotensin-converting enzyme (ACE) inhibibitory activity in vitro were investigated. When ethyl acetate and hexane as solvents were used, the total phenols concentrations were 44.1 and 47.3 mg/kg, respectively, which was about 2.0 fold higher than that of water. The antioxidive activity was affected by solvents of extraction. The antioxidative activity was increased in order of hexane > ethyl acetate > n-butanol > methanol > water extraction. On the other hand, in the case of SOD-like activity, it was in the order of methanol > n-butanol > hexane > ethyl acetate extraction. The nitrite scavenging ability showed the most remarkable activity at pH 1.2 irrespective of solvents. Especially, when pH was increased from 1.2 to 6.0 using ethyl acetate extraction, it was decreased from 69.2 to 7.8%. The tyrosinase inhibitory activity was in the range of 15.2~21.3% and was increased in order of water > methanol > n-butanol>hexane > ethyl acetate extract. These results suggest that hexane and ethyl acetate extraction of Phyllostachys nigra Munro can be used in bioactive and functional materials.

• 우유
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• s.58 fall
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• pp.5-14
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• 1994

11월23일은 대학수학능력시험일이다. 예로부터 ‘받아 놓은 날은 빨리 온다’고 하였다. ‘매도 빨리 맞으면 낫다’라는 말도 있으나 시험 보는 날만은 하루라도 늦게 왔으면 좋겠다는 바라는 마음은 수험생과 학부모 모두의 마음이 아닐까한다. 대학에서 학생들 시험 감독을 하다보면 시험지를 돌리는 중인데도 책을 집어넣지 못하고 한자라도 더 볼 려고 애를 쓰는 모습을 쉽게 접한다. 하물며 일생이 결정된다고 여기는 대학입학을 좌우하는 시험인데 마음이 오죽할까? 안쓰럽다. 학생들 개개인이 모두들 나름대로 받아 놓은 날에 맞추어 어떻게 시험공부를 할 것인지 계획을 세우고 실천하고 있으리라 여겨진다. 그러나 ‘건강을 잃고 천하를 얻은들 무슨 소용이 있으랴?’ 건강유지도 학과공부 못지않게 중요하다는 점을 인식해야 한다.