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  • 1
    Electronic Resource
    Electronic Resource
    Xylan of Siphonaceous Green Algae (1960)
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 82-83 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the course of our work on the cell wall constituents of green algae we have found that each of the main cell walls of Bryopsis maxima, Caulerpa anceps, Halimeda cuneata and Chlorodesmis formosana consisted not of cellulose but of xylan, in which xylose residues are linked by a 1,3-bond. Besides ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/187082a0
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  • 2
    Electronic Resource
    Electronic Resource
    Specificities of Several Acid Phosphatases from Plant Sources (1964)
    [s.l.] : Nature Publishing Group
    Nature 203 (1964), S. 939-940 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] UNLIKE the phosphatases of animal origin1, those from vJ plant sources have so far been examined only to a limited extent and some of the reported results are incompatible with each other. The possible identity of hosphomonoesterase and pyrophosphatase in higher plants has been suggested by some ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/203939a0
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  • 3
    Electronic Resource
    Electronic Resource
    Structural Investigation of a Laminaran isolated from Eisenia bicyclis (1961)
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 1078-1080 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In contrast to the modified Kylin method previously used by Nisizawa1, the small pieces of frond were extracted with about ten times their volume of 1 per cent hydrochloric acid at room temperature for five days. The crude laminaran was precipitated from the extract by the addition of five volumes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1921078a0
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  • 4
    Electronic Resource
    Electronic Resource
    Changes in M:G ratios of extracted and residual alginate fractions on boiling with water the dried brown alga Kjellmaniella crassifolia (Laminariales, Phaeophyta) (1996)
    Springer
    Hydrobiologia 326-327 (1996), S. 515-518 
    Details
    ISSN: 1573-5117
    Keywords: alkali-soluble alginate ; block structure ; boiling water-soluble alginate ; brown alga ; Kjellmaniella crassifolia ; M:G ratio ; seaweed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Kjellmaniella crassifolia, the edible macro-brown alga in Japan contained nearly 27% of alginates of which nearly 7% was extractable from the fronds with boiling water for 6 h and the residual alginates in the frond were almost exhaustively extracted with a dilute alkali at 60 °C for 6 h. The alginates dissolved in all these extracts with both boiling water and dilute alkali were purified by fractionation with MgCl2 and alcohol. The content of MM blocks in the boiling water-soluble alginate sample increased remarkably during heating for 6 h while that of GG blocks from the same sample decreased. In contrast, MM blocks in the alkali-soluble alginate sample decreased during 6 h heating while GG blocks continued to increase. Since the amounts of MG blocks showed slight fluctation, the M:G ratio of alginates extracted with boiling water increased towards the end of extraction whereas the reverse is true for the alkali-soluble alginates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00047855
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  • 5
    Electronic Resource
    Electronic Resource
    Monthly changes in the content of fucans, their constituent sugars and sulphate in cultured Laminaria japonica (1999)
    Springer
    Hydrobiologia 398-399 (1999), S. 411-416 
    Details
    ISSN: 1573-5117
    Keywords: brown algae ; Laminaria japonica ; fucan ; sulphated polysaccharide ; monthly change ; molar ratio
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Crude fucan was extracted monthly from makonbu, Laminaria japonica Areschoug, cultured from April to October at a southern site of the Hokkaido bay. The crude fucan yield tended to gradually increase from April to September, and rose markedly in October when spore formation was over. The fucans were fractionated on DEAE-Sephadex A-25 into three acidic components, A, B and C. In all the monthly extracts, fraction C was the largest. It was entirely free of laminaran and alginate, as was fraction B. Several sugars such as mannose and glucuronic acid, were identified in fraction C beside a large amount of fucose and sulphate. Only the proportion of the latter two constituents continued to increase as the alga matured to reach twice or even more than three times as much as all the other sugars in the September extract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017007623005
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  • 6
    Electronic Resource
    Electronic Resource
    Antitumor activity of marine algae (1990)
    Springer
    Hydrobiologia 204-205 (1990), S. 577-584 
    Details
    ISSN: 1573-5117
    Keywords: antitumor ; Ehrlich carcinoma ; lipids ; Meth-A fibrosarcoma ; polysaccharides ; seaweed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Powdered tissue from 46 species of air-dried marine algae (four green, 21 brown and 21 red algae) were screened for antitumor activity. Significant activity against Ehrlich carcinoma was found in the brown algae Scytosiphon lomentaria (69.8% inhibition), Lessonia nigrescens (60.0%), Laminaria japonica (57.6%), Sargassum ringgoldianum (46.5%), the red algae Porphyra yezoensis (53.2%) and Eucheuma gelatinae (52.1%) and the green alga Enteromorpha prolifera (51.7%). Five brown and four red algae showed appreciable antitumor activity against Meth-A fibrosarcoma. To identify specific molecules with antitumor activity, 15 kinds of polysaccharide preparations of seaweed origin and 24 kinds of lipid fractions extracted from various seaweeds were tested. Appreciable inhibition of Ehrlich carcinoma was found for fucoidan preparations from Undaria pinnatifida and Sargassum ringgoldianum, for carrageenans and for porphyran. Several glycolipid and phospholipid fractions from brown and red algae were effective against Meth-A fibrosarcoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040290
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  • 7
    Electronic Resource
    Electronic Resource
    Incorporation of 14C-radioactivity into lipid classes at different maturity of Laminaria japonica Aresch. cultured under natural and partially controlled conditions (1993)
    Springer
    Hydrobiologia 260-261 (1993), S. 621-625 
    Details
    ISSN: 1573-5117
    Keywords: lipid metabolism ; lipid classes ; Laminaria japonica ; brown algae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A study to assess which environmental or developmental factors predominate in the biosynthesis of lipids of Laminaria japonica Aresch. blades was undertaken by means of 14C-labelling technique. In experiment 1, kelp blades at different growth stages were collected in different cultural seasons. In experiment 2, kelp blades of different sizes and maturity cultured simultaneously for two months in the same sea area were collected at the same time. The following results were obtained. In experiment 1, the 14C-incorporation into whole lipids was lowest in juvenile blades collected at the end of autumn and highest in blades of middle size collected in winter. However, the highest counts were incorporated in PC among complex lipid classes from all size classes of blades in both experiments 1 and 2. In experiment 2, 14C-incorporation patterns of individual lipid classes were characteristically different depending on the sizes of blades even under the same cultural condition. Thus, the biosynthesis of lipids in this kelp seems to be affected essentially by developmental factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00049080
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  • 8
    Electronic Resource
    Electronic Resource
    Content of arachidonic and eicosapentaenoic acids in polar lipids from Gracilaria (Gracilariales, Rhodophyta) (1990)
    Springer
    Hydrobiologia 204-205 (1990), S. 513-519 
    Details
    ISSN: 1573-5117
    Keywords: fatty acids ; Gracilaria ; red algae ; seaweed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fatty acid composition, especially the distribution of eicosapolyenoic acids in several species of Gracilaria, was analyzed in relation to their taxonomy. The species have been grouped into two types based on distribution of these polyenoic acids: Type 1, which contains palmitic, oleic and arachidonic acids as the major components, and Type II, which contains eicosapentaenoic acid in addition to Type I fatty acids. Octadecapolyenoic acids were detected only in trace amounts in each Type. A similar remarkable difference also was observed in the fatty acid composition of lipid classes. The major component of eicosapolyenoic acids in Type I was arachidonic acid in all lipid classes. In Type II, eicosapentaenoic acid was the major component in monogalactosyl diacylglycerol, digalactosyl diacylglycerol, sulfoquinovosyl diacylglycerol and phosphatidylglycerol. Arachidonic and eicosapentaenoic acids were contained in large amounts in Type II phosphatidylcholine. Grouping of Gracilaria species into Type I and Type II is not entirely consistent with morphological and taxonomic features, but the difference in fatty acid composition is likely due to genetic rather than to environmental factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040279
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  • 9
    Electronic Resource
    Electronic Resource
    The main seaweed foods in Japan (1987)
    Springer
    Hydrobiologia 151-152 (1987), S. 5-29 
    Details
    ISSN: 1573-5117
    Keywords: seaweed ; laver ; nori ; konbu ; hiziki ; wakame ; amino acids ; minerals ; vitamins ; arsenic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00046102
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  • 10
    Electronic Resource
    Electronic Resource
    Cellulase production from immobilized growing cell composites prepared by radiation polymerization (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 26 (1984), S. 17-21 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The cellulase production from immobilized Trichoderma reesei composites prepared by radiation polymerization at low temperature was studied. The production of cellulase from the cells irradiated by radiation was slightly retarded at the initial stage of the culture, but was immediately recovered. The production of cellulase resulting from the growth of the immobilized cells proceeds efficiently in the composite having a porous polymer matrix, in which the productivity of cellulase varied with the hydrophilicity, the shape of the composite, monomer, and cell concentration. It was found that cellulase produced by immobilized growing cell composites effectively hydrolyzed cellulosic wastes such as newspaper and chaff which are pretreated by irradiation and crushing.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260260105
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