완효성 비료 분시별 세물차의 수량 및 품질

박장현(JㆍHㆍPark),신기호(KㆍHㆍShin),최 정(JㆍChoi),한재석(JㆍSㆍHan),임근철(GㆍCㆍLim) 한국차학회 2002 한국차학회지 Vol.8 No.2

A field experiment was conducted to evaluate effect by split-application method of slow-release fertilizer on the tea plant. The yield of the 1st harvested tea leaves had increased 3% in the slow-release fertilizer(two time split manuring) compared with the traditional manuring(four time split manuring), and that of the slow-release fertilizer to one time split manuring was decreased 14±3%. In case of the 1st harvested leave, the contents of chemical components related to quality such as total nitrogen, total amino acid, caffeine, chlorophyll, vitamin C, fatty acid and theanine were somewhat higher in the slow-release fertilizer(two time split manuring) than those of the traditional manuring, but that of tannin was low. The one time split manuring of slow-release fertilizer had a contrary tendency with two time split manuring treatment. In scoring test, appearance and quality of green tea were more excellence in the two time split maunring compared with one time split manuring of slow-release fertilizer and with the traditional manuring (four time split manuring). Yield of tea was increased, quality of tea was improved and loss of N, P, K was decreased with use of slow-release fertilizer.

덖음차 제조중 기계적 첫 비빔시간이 품질에 미치는 영향

한재석(J.S. Han),박장현(J.H. Park),최형국(H.K. Choi),허원녕(W.N. Hou) 한국차학회 1999 한국차학회지 Vol.5 No.1

The contents of moisture of green tea were on the decrease with the prolongation of 1st rolling time, and the yield of green tea at 10 min. rolling time was the highest value of 23.46%. Mineral contents of these mechanical rolling green teas were higher than those hand rolling green teas. All organic compound contents of those except chlorophyll were lower than these. Particularly 10 min. rolling green tea had higher contents of total nitrogen. total amino acid and chlorophyll. and lower content of tannin than the other rolling periods. The content of caffeine wa: not different significantly, but The content of vitamin C went down with the extension of rolling period. Sixteen kinds of free amino acid detected by HPLC had higher contents of theanine, glutamic acid, alanine, tyrosine and total amino acid. The taste-determinants such as theanine, aspartic acid, serine. glutamic acid and arginine in green tea liquor. occupied as much as 83.4~94.2% of T.A.A.s. Among these. theanine was more than 50%. Lightness and yellowness of green tea were increased with delay of rolling time, while green color(redness) appeared to be more distinct at 10 min. rolling time than other treatments. Consequently. these results meant that 10 min. rolling time was considered to be the best rolling time.

차나무 경정배양시 생장조정제의 종류 및 농도가 품종간 신초 생장과 발근에 미치는 영향

김주희(J.H. Kim),최형국(H.K. Choi),김정운(J.W. Kim),신길호(G.H. Sin),한재석(J.S. Han),김선우(S.W. Kim),오미정(M.J. Oh) 한국차학회 1998 한국차학회지 Vol.4 No.1

Effects of growth regulators and their concentration on shoot growth and rooting of Tea stem cultures are as follow. Application of BA1.0~5.Omg/ℓ promoted shoot growth, leaf number, and callus induce in tea. It was not difference of shoot growth among cultivars, but C.V. Yabukita grew well in the application of BA. callus induced in all applitions, and treatment of BA1.0 -3.Omg/ℓ excellent. Number of root incressed in the applications of NAA, but not rooted in BA, thus root development achived by the treatment of IBA 1.0~3.Omg/ℓ . It was good for growing shoot growth in mixtured growth regulators, BA and GA₃then only a growth regulator.

韓國 自生茶(Camellia sinensis L.) 花粉 貯藏 特性

김정운(J.W. Kim),곽수년(S.N. Kwack),최형국(H.K. Choi),신길호(G.H. Shin),김주희(J.H. Kim),한재석(J.S. Han) 한국차학회 1999 한국차학회지 Vol.5 No.2

For breeding new Korean tea cultivars, it is very important to get basic informations on pollen storage method. Results of this investigation are summarized as follows. The pollen germination rate during storage was changed a little differently among varieties, and pollens collected from flowers in bloom-the pollens collected in two days before bloom showed higher germination rate than them in one day after bloom or five days before bloom. During Storafe at 20˚C, the pollens germination rate was decreased in 3 to 5 days after storage, and pollens was not germinated in 25 days after storage. Optimum temperature for pollen storage was 0 to -5˚C. Pollens in one day after bloom showed low germination rate compared to them in bloom or in 1-5 days before bloom. In conclusion. to extend storage time of tea pollens, it should collect and store in bloom or one day before bloom.

옥로차의 엽위별 화학성분 함량

박장현(J.H. Park),김정운(J.W. Kim),김정근(J.K. Kim),한재석(J.S. Han),신기호(G.H. Shin),최정(J. Choi),최형국(H.K. Choi) 한국차학회 1999 한국차학회지 Vol.5 No.2

Chemical constituents in the different parts of tea shoots were investigated for green tea. "Okro". The contents of total nitrogen, caffeine and vitamin C at the leaves were decreased with growing, while those of total amino acid and chlorophyll were the highest at the 5th leaves and in the 3rd leaves, respectively. The content of tannin ranged from 8.63% to 12.29%. The content of tannin at the 1st leaves was the highest as 12.29% and that of the 4th leaves was the lowest as 8.63%. The contents of free amino acids at the stem was the highest as 4,675 mg/100g and most of amino acids except for theanine were greater at the lower part and mast of amino acids contents were higher at the stem than at the leaves. The content of fatty acids at the 2nd leaves was the highest as 3.594 mg/100g and that at stem was the lowest as 1.376 mg/100g. The contents of palmitic acid and stearic acid were the highest in the 5th leaves and those of oleic acid, linoleic acid and linolenic acid were the highest at the 2nd leaves. In conclusion, the 5th leaves among tea shoots plucked before the 2nd shading for 15 days could be used to manufacture Okro.

완효성 비료 비종에 따른 첫물차의 수량 및 품질

박장현(J.H.Park),임근철(G.C.Lim),신기호(K.M.Shin),최정(J.Choi),한재석(J.S.Han) 한국차학회 2001 한국차학회지 Vol.7 No.3

Examinated results for bring light on the kinds of slow-release fertilizers are summarized as follows. Among slow-release fertilizers, the yields of the 1st harvested tea leaves in the T₂ treatment was higher 9±4% with values of 366mg/100g than in other slow-release fertilizers treatment(325~352mg/100g), and was higher 14% than in traditional manuring (321mg/100g). The contents of chemical components such as total nitrogen, total amino acid, chlorophyll, vitamin C and free sugar were somewhat higher in T₂ treatment than those of other tratments. However, the content of tannin and caffeine were slightly lower than in the other treatment. The contents of theanine, glutanic acid and arginine as a good teaste component of green tea were higher in the T₂ treatment than in the other slow-release fertilizers and traditional manuring. In scoring test, the slow-release fertilizers treatment was not different the traditional manuring significantly. The yield and quality of T₂ treatment were more excellent than in other slow-release fertilizers and in traditional mauring.

臺灣의 茶 栽培 및 利用 實態

金正云(J.W. Kim),金在기(J.K. Kim),金冑,禧(J.H. Kim),申吉浩(G.H. Shin),韓載錫(J.S. Han),朴章炫(J.H. Park),趙慶淑(K.S. Cho),崔炯局(H.K. Choi) 한국차학회 1998 한국차학회지 Vol.4 No.2

In 1995 statistical data, Taiwan tea area is 21,554 hectares, predominantly in the north and central parts of the island. The main tea plantions are Taipei, Taoyuan, Hsinchu, Miaoli, Nantou, Chiayi, Yunlin, Hwalien and Taitung Counties. Taiwan's climate is subtropical, with an average annual temperature, 20 to 21˚C and annual rainfall, is over than 2000mm. Texture is Volcanic soil and altitude, 300m. Taiwan major tea varieties are Chinsin Oolong by 48%` Chinsin Dapan and TTES N0. 12. Some Production and consumption data of Taiwan tea are as follows : production, 20,892 tons ; yield, 1,048㎏/ha ; exports, 3,172 tons ; consumption, 1,210g/person in 1995. Taiwan production revenues are relatively high but, expenses are too high : production worth 48,492us$/ha, Total costs 35,520US$/ha, and Net revenue 12,972US$/ha in Shyu, 1993. Tea marketing channels in Taiwan are multiple, particularly the tea factories of midium scale production with 48% of total marketing and farm's Organzation with 5%. In Taiwan, the manufacture of diverse tea products, such as instant tea, tea candy, tea powder, fruit tea, and caky tea etc and traditional tea have developed.

차나무(Camellia sinensis L. var.sinesis) 정지시기가 수량 및 품질에 미치는 영향

김정운(J.W.Kim),신길호(G.H.Shin),김주희(J.H.Kim),김영신(Y.S.Kim),한재석(J.S.Han),최형국(H.K.Chio) 한국차학회 1997 한국차학회지 Vol.3 No.1

The purpose of this study is to consider the effect of skiffing time on tea leaf yields and quality in the first leave production. New tea leaves can be yielded ealier 6 or 7 day by skiffing at late September instead of late October. Cold damage (freezing damage) was tendency to increase by late skiffing time especially middle November damage rate increasedly to increase up to 25% by at late September than by at late October which was usual skiffing time in Korea. The contents of total nitrogen did not show a variation by skiffing time but that of tanning represent the higher by the more late of skiffing time. The reasonable skiffing time of tea plant was supposed that the late September which reache at average temperature 18~20˚C in Korea.

한국자생차(Camellia sinensis L.)의 주요 특성조사

김정운(J.W. Kim),곽수년(S.N. Kwack),최형국(H.K Choi),신길호(K.H. Shin),한재석(J.S. Han) 한국차학회 2001 한국차학회지 Vol.7 No.1

For breeding new Korea tea cultivar. it in very important to get basic informations on major characters of Korean native tea varieties. In these experiments, the characters of leaf and flower, stomota of tea leaves were investigated in 25 native tea varieties. Results of this investigation are summarized as follows Eight native varieties including ‘Songgwangsa Temple’ had 7-9cm in leaf length and four varieties including ‘Jangheung Bangcuon’ hand more than 11.0cm. The number of crenate in the half leaf of native tea plant were 25-30 in 16 locations and the number of stomata per mm' were 111-130 in 13 loactions. According to pistil characteristics, ‘Bulgabsa Temple’ and ‘Bubcheonsa Temple’ varieties showed the same Ld type as ‘TITES No12’ which the pistil is longer than the stamen and the location of splitting point is under two thirds of pistil.

茶나무 整枝 程度가 茶葉 收量 및 品質에 미치는 影響

金正云(J.W. Kim),申吉浩(G.H. Shin),金冑,禧(J.H. Kim),韓載錫(J.S. Han),吳美貞(M.J. Oh),崔炯局(H.K. Choi) 한국차학회 1998 한국차학회지 Vol.4 No.1

This experiment conducted for revealing the influence of skiffing strength on the yield and quality of tea leaves at the first yield, carried out from late April to early May. The results were as follows. 1. Light skiffing treatment facililate to move up the harvesting time by 3 to 4 days. 2. Heavy skiffing plants showed more decreased cold damage 34.9% than 10.8% in light skiffing. 3. Growth and yield were deteriorated as skiffing strength increased because emergence of new shoots were decreased by cold damage. 4. Among the contents of several components, total-nitrogen and free amino acid were increaed with treatment of hervy skiffing, but it is not significantly different, and tannin contents was decreased by heavy skiffing.