• Title/Summary/Keyword: 석류(石榴)

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Fruit Rot of Pomegranate (Punica granatum) Caused by Coniella granati in Korea (Coniella granati에 의한 석류 열매썩음병)

  • Kwon, Jin-Hyeuk;Park, Chang-Seuk
    • Research in Plant Disease
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    • v.8 no.4
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    • pp.215-219
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    • 2002
  • Fruit rot of pomegranate (Punica granatum) caused by Coniella granati were observed in several farmer's fields in Gwangdo-myon, Tongyeong City, Gyeongnam Province, Korea. The symptoms occurred on fruit with rotting then eventually dropping and mummification. The colony color of causal fungus was whitish on potato dextrose agar. Conidia were single celled, pale brown or olive in color at maturity, straight or slightly curved fusiform in shape, and were 10.3~17.4$\times$2.8~4.0 ${\mu}{\textrm}{m}$ in size. Conidiogenous cell were hyaline, branched only at the base aseptate, elongate, phialidic, enteroblastic and 12.4~1.4$\times$2.8~3.6 ${\mu}{\textrm}{m}$ in size. Pycnidia were black in color and globose in shape and 124.6~228.4 ${\mu}{\textrm}{m}$ in size. Optimum temperature for mycelial growth was $25^{\circ}C$. On the basis of mycological characteristics and pathogenecity test on host plants, the fungus was identified as Coniella granati. This is the first report on the fruit rot of pomegranate caused by Coniella granati in Korea.

Analysis of Estrogen in Pomegranate Extract by Solid Phase Extraction and Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS를 이용한 석류추출물 중의 에스트로겐 분석)

  • Kum, Eun-Joo;Kwon, Do-Hyeong;Shin, Hye-Seoung
    • Journal of Food Hygiene and Safety
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    • v.25 no.1
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    • pp.79-82
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    • 2010
  • The pomegranate (Punica granatum), especially its fruit, possesses a vast ethnomedical history and represents a phytochemical reservoir of heuristic medical value. The tree and fruit can be divided into several anatomical compartments, and the fruit juice, peel and oil are known to be weakly estrogenic and heuristically of interest for treatment of menopausal symptoms and sequellae. In this study, analysis of estrogen in pomegranate extract was carried out with LC/MS/MS. Three batches of pomegranate extract samples were used to analysis the target compounds (estrogen). The contents of estrogen derivatives in the samples were 38.6 ppb of estriol, 83.5 ppb of estrone, and 10.9 ppb of estradiol. This result suggests that the pomegranate extract can used for treatment of menopause symptoms in the woman.

First Report of Ash whitefly, Siphoninus phillyreae (Haliday, 1835) (Hemiptera: Aleyrodidae) in Korea (한국에서 새로운 해충 석류가루이, Siphoninus phillyreae (Haliday, 1835) 발견 보고)

  • Lee, Heungsu;Park, Deog Kee;Lee, Sukmin;Lee, Gwan-Seok;Lee, Jongho;Hong, Ki-Jeong;Lee, Wonhoon
    • Korean journal of applied entomology
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    • v.59 no.3
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    • pp.251-255
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    • 2020
  • In 2019, the ash whitefly, Siphoninus phillyreae (Haliday, 1835), was firstly found on a pear tree in Jinju-si, Gyeongsangnam-do. From occurrence survey, we confirmed that S. phillyreae was occurred in seven cities, Busan, Changwon, Jinju, Gwangyang, Suncheon, Goheung, and Goseong. In addition, seven plants, such as Punica granatum, Pyrus pyrifolia, Cydonia oblonga, Prunus mume, Crataegus pinnatifida, Eriobotrya japonica, Photinia glabra, Pyracantha angustifolia, Lagerstroemia indica, and Malus prunifolia, were detected as hostplants. In this study, we present the first report of this species in Korea and describe the damage caused by S. phillyrease and its taxonomic information.

Ability of the Natural Abrasives Recovered from Sludge (재활용 천연광물 연마재의 연마성능)

  • Cho, Sung-Baek;Seo, Myeong-Deok;Cho, Keon-Joon;Lee, Su-Jeong
    • Journal of the Mineralogical Society of Korea
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    • v.22 no.4
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    • pp.353-358
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    • 2009
  • The ability of natural abrasives which were recovered from CRT glass polishing process was evaluated. Comparing the center line average roughness values of a glass polished with new pumice (Ra = $0.039{\mu}m$) and with new garnet (Ra = $0.031{\mu}m$), the glass surface polished with the recycled pumice and the garnet had less pits on the surface with smaller Ra values (Ra = $0.025{\mu}m$ for recycled pumice and Ra = 0.029 for recycled garnet). Recycled rouge contains amorphous glass fragments so that it should be used as a cement replacement rather than recycle into an abrasive. Nnatural abrasives, pumice and garnet powder, which are used in CRT glass polishing process can be recycled into abrasives so that it can help to minimize costs and environmental impact from the production of abrasives and the disposal of waste sludge.

Convergent Comparison of the Change in Commercial Juices on the Enamel Surface (시판 주스가 법랑질 표면에 미치는 변화에 대한 융복합적 비교)

  • Kim, Yu-Rin;Choi, Yu-Ri;Choi, Mi-Sook;Nam, Seoul-Hee
    • Journal of the Korea Convergence Society
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    • v.12 no.12
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    • pp.153-159
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    • 2021
  • The purpose of this study is to determine the demage of tooth surface changes according to exposure time of commercially available green grape juice and pomegranate juice. Extracted healthy human premolar enamel surfaces were used. Control group immersed in phosphate-buffered saline (PBS) and 10 ml of commercially available green grape juice and pomegranate juice applied experimental group was divided into 7 groups. The pH of the experimental juice was measured, and the change and micrographics of the surface were confirmed through a Scanning Electron Microscope (SEM). It was found that the more the immersion time between the tooth surface and acid juice, such as damage to the tooth surface, has a greater effect on the surface damage. Based on the results of this study, it is necessary to reduce the number of drinking times and retention time in the oral cavity.

Occurrence and Geochemical Characteristics of the Haenam Pb-Zn Skarn Deposit (해남 연-아연 스카른광상의 산상과 지화학적 특성)

  • Im, Heonkyung;Shin, Dongbok;Heo, Seonhee
    • Economic and Environmental Geology
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    • v.47 no.4
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    • pp.363-379
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    • 2014
  • The Haenam Pb-Zn skarn deposit is located at the Hwawon peninsula in the southwestern part of the Ogcheon Metamorphic Belt. The deposit is developed along the contact between limestone of the Ogcheon group and Cretaceous quartz porphyry. Petrography of ore samples, chemical composition of skarn and ore minerals, and geochemistry of the related igneous rocks were investigated to understand the characteristics of the skarn mineralization. Skarn zonation consists of garnet${\pm}$pyroxene${\pm}$calcite${\pm}$quartz zone, pyroxene+garnet+quartz${\pm}$calcite zone, calcite+pyroxene${\pm}$garnet zone, quartz+calcite${\pm}$pyroxene zone, and calcite${\pm}$chlorite zone in succession toward carbonate rock. Garnet commonly shows zonal texture comprised of andradite and grossular. Pyroxene varies from Mn-hedenbergite to diopside as away from the intrusive rock. Chalcopyrite occurs as major ore mineral near the intrusive rock, and sphalerite and galena tend to increase as going away. Electron probe microanalyses revealed that FeS contents of sphalerite become decreased from 5.17 mole % for garnet${\pm}$pyroxene${\pm}$calcite${\pm}$quartz zone to 2.93 mole %, and to 0.40 mole % for calcite+pyroxene${\pm}$garnet zone, gradually. Ag and Bi contents also decreased from 0.72 wt.% and 1.62 wt.% to <0.01 wt.% and 0.11 wt.%, respectively. Thus, the Haenam deposit shows systematic variation of species and chemical compositions of ore minerals with skarn zoned texture. The related intrusive rock, quartz porphyry, expresses more differentiated characteristics than Zn-skarn deposit of Meinert(1995), and has relatively high$SiO_2$ concentration of 72.76~75.38 wt.% and shows geochemical features classified as calc-alkaline, peraluminous igneous rock and volcanic arc tectonic setting.

Metamorphic Evolution of Metabasites and Country Gneiss in Baekdong Area and Its Tectonic Implication (백동지역의 변성염기성암과 주변 편마암의 변성진화과정과 그 지구조적 의미)

  • 오창환;최선규;송석환
    • The Journal of the Petrological Society of Korea
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    • v.11 no.3_4
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    • pp.103-120
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    • 2002
  • In the Baekdong-Hongseong area, the southwestern part of the Gyeonggi Massif in Korea, ultramafic rocks occur as lenses within Precambrian granitic gneiss. At Baekdong area, ultramafic lens contains metabasite boudin which had undergone at least three stages of metamorphisms. The mineral assemblage on the first stage, Garnet+Sodic Augite+Hornblende+Plagioclase+Titanite, is recognized from the inclusions in garnet. The second stage is represented by the assemblage in matrix, Garnet+ Augite+Hornblende+Plagioclase, while the third stage is identified by the Hornblende+Plagjoclase $\pm$ Garnet assemblage in the symplectite formed around garnet. The P-T conditions of the first and the third stages are $690-780^{\circ}C$, 11.8-15.9 kb and $490-610^{\circ}C$, 4.0-6.3 kb, respectively. These data indicate that metabasite in Baekdong area had experienced a retrouade P-T path from the eclogite(EG) - high-pressure granulite (HG)-amphibolite (AM) transitional facies to the AM through HG-AM transitional facies. The core and rim of garnet in country granitic gneiss give $605-815^{\circ}C$, 10.7-16.0 kb and $575-680^{\circ}C$, 5.4-7.0 kb, respectively, indicating that the retrograde P-T path of granitic gneiss is similar to that of metabasite. Trace element data reveals that the tectonic setting of metabasite is island uc. The general geology, the metamorphic evolution, the mineral chemistry and the tectonic setting of Baekdong area indicate that the Baekdong-Hongseong area in Korea is a possible extension of the Sulu collision Belt in China. On the other hand, the Sm-Nd whole rock-garnet isochron ages of metabasites are 268.7-297.9 Ma which are older than the ages of UHP metamorphism (208-245 Ma) in the Dabie-Sulu Collision Belt. The older metamorphic ages suggest that collision between Sino-Korea and Yangtz plates may have occurred earlier in Korean Peninsula than China.

Quality Characteristics of Seockryu-pyun Added Pomegranate Juice and Pomegranate Concentrate (석류즙과 석류농축액을 첨가한 석류편의 품질특성)

  • Ko, Seong-Hye;Park, Jin-Hee;Yoo, Seung-Seok
    • Korean journal of food and cookery science
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    • v.24 no.5
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    • pp.722-728
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    • 2008
  • This study was to investigate the quality characteristics of Seockryu-pyun by addition of different ratio of pomegranate juice and pomegranate concentrate (100%, 80%, 60%, 40%). Moisture and the pH increased as the content of pomegranate juice and pomegranate concentrate decreased respectivley. However, DPPH radical scavenging activity was decreased when adding pomegranate juice and pomegranate concentrate was decreased. With decreasing pomegranate juice addition, both the lightness(L) and yellowness(b) was significantly (p<0.05) higher, whereas, the redness(a) was significantly (p<0.05) lower. As addition of pomegranate concentrate was decreasing that lightness, a value and b value were higher. Texture profiles of hardness, adhesiveness, cohesiveness, gumminess, chewiness of Seockryu-pyun was not greatly showed significant difference among samples. Also, springiness was not significantly (p<0.05) different in any groups. For sensory evaluation, color and sourness were decreased as pomegranate juice and pomegranate concentrate was diluted. Seockryu-pyun, PJ3 made with addition of 60% pomegranate juice was the most preferred in overall acceptability. From the results, the most advisable mixture ratio of Seockryu-pyun was found as pomegranate juice 360 g (60%), water 240 g, mungbean starch 60 g and sugar 200 g.