• Title/Summary/Keyword: Pachymeniopsis elliptica

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Reproductive Structures of Pachymeniopsis elliptica (Holmes) Yamada (Rhodophyta, Grateloupiaceae) (홍조 도박(Pachymeniopsis elliptica (Holmes) Yamada)의 생식기 구조)

  • 이해복
    • Journal of Plant Biology
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    • v.27 no.4
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    • pp.233-239
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    • 1984
  • Reproductives structures of Pachymeniopsis elliptica (Holmes) Yamade (Rhodophyta, Grateloupiaceae) are investigated. In female gametophyte the carpogonial branch and auxiliary cell are produced in separate accessory branch system, the primary ampullar filament originated from mid-cortical layer. After fertilization, auxiliary cell joined with connecting filament becomes a fusion cell by fusing with several neighboring ampullar cells. The fusion cell produces a gonimoblast initial. It divides into gonimoblast cells, which later convert to carposporangia. In male gametophyte superficial cortical cells of vegetative filament produce two spermatangial mother cells which cut off up to three spermatangia respectively. Tetrasporangial initials are formed from the 6th to 12th cells of the cortical layer in tetrasporophyte, and divided cruciately to form tetrasporangium. Some of the sporangia are, however, divided zonately.

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Effect of Methanolic Extract of Pachymeniopsis elliptica on Lipids Component of Hyperlipidemic Rats (해조류 참도박의 메탄올 추출물이 고지방식이 흰쥐의 지질성분에 미치는 영향)

  • 박종철;장영인;도명술;김석환;최종원
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.25 no.6
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    • pp.958-962
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    • 1996
  • Hypolipidemic effect of methanolic extract of marine algae, Pachymeniopsis elliptica was examined in hyperlipidemic rats. Male $Sprague-Dawley(120\pm5g)$ rats were divided into five groups and fed high fat diets for four weeks. Each group was orally administered with methanolic extract of P. elliptica (PEM, 250, 500mg/kg), benzofibrate(BZF, 30mg/kg) and cholestyramine resin(CSR, 100mg/kg) daily for one week. Significant decreases in cholesterol, total lipid and triglyceride of both blood and liver were observed by the administration of the extract. But the levels of LDL- and HDL-cholesterol and the activity of lipase were not changed. Such results suggest that the extract may promote the fecal excretion of bile acid in hyperlipidemic rats.

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Purification of Blood Anticoagulant Polysaccharide from Pachymeniopsis elliptica (참도박의 혈액 항응고성 다당류의 정제)

  • 윤진아;유광원;전우진;조홍연;손용석;양한철
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.5
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    • pp.908-916
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    • 2000
  • This study was undertaken to purify the anticoagulant polysaccharide from Pachymeniopsis elliptica. The anticoagulant compound (PE-2IVc-2-1) was isolated from the crude polysaccharide (PE-2) by the sequential steps such as ultrafiltration (PE-2IV), anion-exchange chromatography of DEAE-Toyopearl 650C(PE-2IVc), size-exclusion chromatography of Sepharose CL-6B (PE-2IVc), and HPLC Shodex OHpak column chromatography (PE-2IVc-2-1). The apparent molecular weight of purified polysaccharide (PE-2IVc-2-1) was approximately 710 kDa. It was mainly composed of galactose (48.6%) and 3,6-anhydrogalactose (44.0%) with 27.1% of sulfate residue, in addition a trace amount of xylose (3.6%), glucose (1.1%), mannose (1.1%), arabinose (0.8%) and fucose (0.8%). The IR spectrum of the polysaccharide showed the characteristic bands of S=O(1116.74 and 1143.17 $cm^{-1}$) and C-O-S (828.19 $cm^{-1}$) stretching, respectively. The anticoagulant effect of PE-2 in ex vivo was proportional to the concentration of intravenously injected dose, up to 100 mg/kg.

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Screening of Marine Natural Products on Inhibitory Effect of the Formation of Lipid Peroxidation (수산생물자원 추출물의 과산화지질생성의 억제효과)

  • Choi, Jong-Won;Park, Jong-Cheol
    • Korean Journal of Pharmacognosy
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    • v.27 no.2
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    • pp.117-122
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    • 1996
  • The methanolic extracts of some marine natural products were tested for investigating the effects on the formation of lipid peroxide and the activities of free radical generating enzymes. The methanolic extracts of Styela clava, Ecklonia stolonifera, Pachymeniopsis elliptica and Hypnea charoides which decreased the formation of lipid peroxide inhibited the activity of xanthine oxidase about 41, 20, 20 and 21% by adding $100\;{\mu}g/ml$ of each methanolic extracts, respectively. However, the four extracts didn't inhibit the activity of aldehyde oxidase.

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Algal Communities and Useful Seaweed Distribution at Gangnung and It's Vicinity in East Coast of Korea (강릉 연안의 해조군락과 유용 해조자원 분포)

  • Sohn, Chul-Hyun;Choi, Chang-Geun;Kim, Hyung-Geun
    • ALGAE
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    • v.22 no.1
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    • pp.45-52
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    • 2007
  • An intertidal marine benthic algal vegetation and vertical distribution at Kangnung and it’s vicinity, the eastern coast of Korea was investigated to clarify the community structure and vertical distribution by quadrat method. Marine algae identified from the area were 116 species; 15 green, 31 brown and 70 red algae. The dominant species were Ulva pertusa, Codium fragile, Undaria pinnatifida, Dictyota dichotoma, Gelidium amansii, Corallina pilulifera, Carpopeltis affinis, Grateloupia filicina, Pachymeniopsis elliptica and Chondrus ocellatus at study sites. The vertical distribution of intertidal marine algae was divided into three distinct zones. They were characterized by Porphyra tenera at the upper, Enteromorpha spp. and Ulva pertusa at the middle, and Sargassum thunbergii, Hizikia fusiformis and Pachymeniopsis elliptica at the lower zones, respectively. The vertical distribution of subtidal zone algae were characterized by Laminaria spp. at 15m depth and Kjellmaniella crassifolia at 15 to 25 m depths, whereas Agarum cribrosum was dominant at the lower zone than 25 m depth.

Purification and Characterization of Sulfated Polysaccharide Isolated from Hot Water Extract of Pachymeniopsis elliptica (Pachymeniopsis elliptica의 열수 추출물로부터 분리한 함황 다당류의 정제 및 특성)

  • Lee, Sun-Hee;Jun, Woo-Jin;Yu, Kwang-Won;Chun, Hyug;Shin, Dong-Hoon;Hong, Bum-Shik;Cho, Hong-Yon;Yang, Han-Chul
    • Korean Journal of Food Science and Technology
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    • v.32 no.5
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    • pp.1191-1197
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    • 2000
  • In the preliminary study, we investigated the anti-complementary activities of 62 extracts from Korean edible seaweeds. Of those, Pachymeniopsis elliptica showed the highest anti-complementary activity. Therefore, it was purified as follows; i) PE-1 by ethanol precipitation, ii) PE-1-C by ultrafiltration, iii) PE-1-CIV by DEAE-Toyopearl 650C, and iv) PE-1-CIV-ii by Sepharose CL-6B. The purified compound, PE-1-CIV-ii, was the complexed homogeneous polysaccharide (molecular mass: 780 kDa) with 82.9% of anti-complementary activity. Also, it contained a significant amount of sulfate group (30.5%), which indicated it as a sulfated algal polysaccharide. Its structural monosaccharides were galactose (44.3%), 3,6-anhydrogalactose (34.0%), glucose (8.2%), fucose (5.4%), xylose (5.2%) and rhamnose (2.9%). After the treatment of periodate on a sample, a significant decrease in anti-complementary activity was found, which was a characteristic of bioactive polysaccharides. And-tumor activity of PE-1-A, B and C was tested in the sarcoma-180 solid tumor model. The PE-1-C with the largest molecular mass (more than 300 kDa) showed 81% of inhibition on the solid tumors, suggesting that the anti-complementary activity was, at least in part, related to anti-tumor activity. Based upon these results, the purified polysacchardes could be an immunopotentiator in vivo.

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Protective Effect of Marine Natural Products on the Hepatic Lipid Peroxidation in Acetaminophen-treated Rats (아세트아미노펜 유도 흰쥐에서 수산생물자원 추출물의 in vivo 간보호작용)

  • Choe, Jong-Won;Park, Jong-Cheol
    • YAKHAK HOEJI
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    • v.40 no.5
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    • pp.574-581
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    • 1996
  • The study was initiated to elucidate the protective mechanism by examining in vivo effect of some marine natural products, Styela plicata, Ecklonia stolonifera and Pachymeniopsis elliptica on acetaminophen-induced lipid peroxidation. The methanol extract of S. plicata prevented acetaminophen (800mg/kg, i.p.)-induced hepatotoxicity in rats as evidenced by the decreased formation of lipid peroxide. But the methanol extracts of E. stolonifera and P. elliptica were not affected on the formation of lipid peroxidation. The activities of cytochrome P-450, animopyrine N-demethylase and aniline hydroxylase were not changed by the treatment with S. plicata in comparison with acetaminophen-teated group. In acetaminophen-treated control rats, the glutathione S-transferase activity was decreased markably. However. in S. plicata pretreated group, the effect caused by acetaminophen was markably reduced. A-cetaminophen decreased the level of hepatic, glutathione, which was restored to same degree by S. plicata pretreatment. And activity of ${\gamma}$-glutamylcystein synthetase was not changed by S. plicata pretreatment, but the activity of glutathione reductase was increased significantly.

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Growth Enhancement of the Microalga Tetraselmis suecica by an Extract of the Green Alga Monostroma nitidum

  • Cho Ji Young;Choi Jae Suk;Kang Se Eun;Ahn Sang Jung;Kim Joong Kyun;Hong Yong Ki
    • Fisheries and Aquatic Sciences
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    • v.8 no.1
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    • pp.1-5
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    • 2005
  • Cell growth of the marine microalga Tetraselmis suecica was regulated by the addition of seaweed extracts in its culture medium. Of 26 species of seaweed tested, water-soluble extracts from Monostroma nitidum and Pachymeniopsis elliptica and methanol-soluble extract from Sargassum confilsum enhanced the growth of T suecica cells. The water extract of M. nitidum was the most effective, producing up to a 2-fold increase in cell density with the addition of 1 mg/mL of extract to the culture medium. Cell size, gross biochemical composition, fatty acids, and digestion efficiency all differed marginally between cultures of T suecica grown with and without the M. nitidum extract.

On the Marine Algae in Onsan Area, East Coast of Korea 2. Seasonal Variation (경남 온산면 일대의 해조류에 관한 연구 2. 계절적 변화)

  • 김영환
    • Journal of Plant Biology
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    • v.23 no.2
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    • pp.61-67
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    • 1980
  • As a part of the environmental base line survey of the Onsan Industrial Base, Korea, marine algal communities were investigated using the quadrat method in Onsan-myon on the east coast of Korea from March to December of 1978. It was learned that the representative dominat species along the coast in the Onsan area throughout the year are Ulva pertusa, Pachymeniopsis elliptica, and Sargassum thunbergii. Both the number of algal species occurring in the quadrat (50$\times$50cm) and the total coverage were higher in March and September than in June and December. A total of 94 species (1 blue-green, 16 green, 25 brown, and 52 red algae) of marine algae was identified in this study.

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