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  • 1
    Electronic Resource
    Electronic Resource
    Dolastane diterpenoids from the brown alga Dictyota indica
    Amsterdam : Elsevier
    Phytochemistry 30 (1991), S. 1015-1018 
    Details
    ISSN: 0031-9422
    Keywords: Dictyota indica ; Phaeophyceae ; brown alga ; diterpenoids ; dolastane derivatives.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(91)85299-F
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A sterol glycoside from marine green alga Codium iyengarii
    Amsterdam : Elsevier
    Phytochemistry 31 (1992), S. 1429-1431 
    Details
    ISSN: 0031-9422
    Keywords: 3-O-β-d-galactopyranosyl-stigmasta-5,25-diene ; Chlorophyta ; Codium iyengarii ; green alga ; sterol glycoside
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0031-9422(92)80311-2
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  • 3
    Electronic Resource
    Electronic Resource
    Sterols from marine green alga Codium decorticatum
    Amsterdam : Elsevier
    Phytochemistry 33 (1993), S. 1189-1192 
    Details
    ISSN: 0031-9422
    Keywords: Chlorophyta ; Codiaceae ; Codium decorticatum ; sterols.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(93)85047-U
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  • 4
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    Phycochemistry and Bioactivity of some Brown Algae from Karachi Coast (2007)
    Univ. of Karachi
    In:  International Journal of Phycology and Phycochemistry, 3 (1). pp. 7-10.
    Details
    Publication Date: 2018-06-29
    Description: Eleven green algae belonging to the phyla Volvocophyta Chlorophyta, and Charophyta were collected from various freshwater habitats of Sindh (Pakistan) during February 1995 and November 1998 and investigated. Their methanol extracts revealed the presence of D-norandrostane-16-carboxylic acid, β-sitosterol, and trans.-phytol. The unsaturated fatty acids were found in larger proportion (54–94%) than the saturated fatty acids (6–40%). The C15:0 and C16:0 were the most commonly occurring fatty acids, followed by C18:1, C19:1, C15:3, and C17:3 acids. These algae resembled green seaweeds of Pakistan to a great extent in their fatty acid composition. Their methanol extract showed poor antibacterial but a strong antifungal activity. They displayed a significant phytotoxic activity but non-significant cytotoxic, insecticidal, and antitumor activities. Algae belonging to the three phyla exhibited differences in their fatty acid, sterol and terpene compositions as well as in their bioactivities. Species belonging to the same genera revealed specific differences among themselves.
    Type: Article , NonPeerReviewed
    Format: text
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  • 5
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    Phcochemistry and Bioactivity of some siphonaceous Green Algae from Karachi Coast (2006)
    Univ. of Karachi
    In:  International Journal of Phycology and Phycochemistry, 2 (2). pp. 223-228.
    Details
    Publication Date: 2017-05-24
    Type: Article , PeerReviewed
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  • 6
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    Acyclic diterpene alcohols isolated from four algae of Bryopsidophyceae and their toxicity (2021)
    In:  http://aquaticcommons.org/id/eprint/16120 | 12051 | 2015-02-04 13:35:58 | 16120 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-06-28
    Description: Three new acylic diterpenoids belonging to the class of phytol series have been isolated. They were obtained from the ethyl acetate soluble fractions of four siphonaceous green seaweeds, Bryopsis pennata Lamour., Caulerpa taxifolia (Vahl) C. Ag., Codium decorticatum (Woodw.) Howe and Valoniopsis pachynema (Mart.) Børg., collected from Karachi coast of Pakistan. Structures of these compounds were elucidated with the help of spectroscopic methods and confirmed by comparison with the known compounds. Even the known compounds are being reported for the first time from a green algal source. All the compounds were found to display a strong toxicity at all the three concentrations tested in the brine shrimp bioassay.
    Keywords: Biology ; Acylic diterpenoids ; phytols ; toxicity ; brine shrimp bioassay ; Bryopsis ; Caulerpa ; Codium ; Valoniopsis ; Chlorophyta
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 15-24
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  • 7
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    Sterol composition of marine algae from Karachi coast of Arabian Sea (2021)
    In:  http://aquaticcommons.org/id/eprint/16031 | 12051 | 2015-01-29 11:03:37 | 16031 | University of Karachi. Marine Reference Collection Centre
    Details
    Publication Date: 2021-06-25
    Description: During the course of chemical investigation of marine algae collected from Karachi coast of Arabian Sea, five sterols named as sarangosterol(1), 23-methyl cholesta-5, 25-dien-3ß-ol(2) from Endarachne binghamiae (brown alga), sargasterol(3) from Dictyota indica (brown alga), cholesterol(4) from Laurencia obtusa (red alga) and clerosterol(5) from Codium iyengarii (green alga) have been isolated. Their structures were elucidated with the help of spectroscopic means.
    Keywords: Chemistry ; sterols ; marine algae ; Endarachne binghamiae ; Dictyota indica ; Laurenica obtusa ; Codium iyengarii ; Karachi ; Pakistan ; Arabian Sea
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 57-64
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  • 8
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    Two new species and two new reports of Ulva L. (Ulvophyceae) from the coast of Karachi, Pakistan (2021)
    In:  http://aquaticcommons.org/id/eprint/16053 | 12051 | 2015-01-26 10:09:23 | 16053 | University of Karachi. Marine Reference Collection Centre
    Details
    Publication Date: 2021-06-26
    Description: Morphology and taxonomy of four species of Ulva i.e. U. anandii Amjad et Shameel sp. nov., U. bifrons Ardre, U. saifullahii Amjad et Shameel sp. nov. and U. taeniata (Setchell) et Gardner were described for the first time from Pakistan. Their anatomy has been investigated in detail and compared with the allied species. A taxonomic comment has been written on U. grandis Saifullah et Nizamuddin.
    Keywords: Biology ; new records ; new species ; distribution records ; plant morphology ; geographical distribution ; taxonomy ; morphology ; sp.nov. ; Ulva taeniata ; Ulva ; marine ; Karachi ; Pakistan
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 5-16
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  • 9
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    Comparative haemagglutinic activity in the species of Caulerpa and Ulva (Chlorophyta) of Karachi coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16091 | 12051 | 2019-06-11 14:54:22 | 16091 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-06-27
    Description: Aquous extracts of 24 species of green seaweeds, 13 of Caulerpa Lamour and 11 of Ulva Linn, were collected from the coastal areas near Karachi, Pakistan and tested for haemagglutination against human erythrocytes of blood groups A,B,AB and O and compared. All the species of Caulerpa and seven of Ulva exhibited a positive activity, the former genus (a member of Bryopsidophyceae) appeared to possess more phycohaemagglutinins than the latter (a member of Ulvophyceae). The haemagglutinic activity proved to be quite helpful in the distinction of various species of both the genera.
    Keywords: Biology ; phycohaemagglutinins ; lectins ; Caulerpa spp. ; Ulva spp. ; Chlorophyta ; coastal areas ; Karachi ; Pakistan
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 113-117
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  • 10
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    Fatty acid composition of three species of Hypnea (Gigartinales, Rhodophyta) from Karachi coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16025 | 12051 | 2015-01-26 09:30:42 | 16025 | University of Karachi. Marine Reference Collection Centre
    Details
    Publication Date: 2021-06-25
    Description: Hypnea musciformis (Wulf.) Lamour., H. pannosa J. Ag. and H. valentiae (Turn.) Mont., collected from the northern Arabian Sea coast of Pakistan, have been investigated for their fatty acid compositions through GC-MS. Palmitic acid was present in largest quantity (55-57%) and oleic was the major (7.6-8.4%) unsaturated fatty acid. Pentacosanoic and hexacosenoic acids are being reported for the first time from any species of Hypnea. The three species differed remarkably due to their habitat ecology.
    Keywords: Biology ; Chemistry ; Fatty acid ; Hypnea spp. ; Rhodophyta ; Karachi ; Pakistan
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 7-10
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