3. REVIEW OF LITERATURE In recent decades, the marine environment has been looked into as a possible source of biomedically important secondary metabolites for use in human or animal medicine. Many organisms from the marine environment have been found to produce antibacterial compounds. These include sponges, ascidian, marine algae, sea grass and microorganisms etc. Marine macro algae have been found to be a prominent source of bioactive fc& nq compounds. Their community structure can be influenced by,¼herbivores and are prone to fouling as well. Hence, they have evolved defensive mechanisms and produce secondary metabolites to protect themselves from herbivores and fouling. The ecological role of such secondary metabolites from micro and macro algae as herbivore deterrents (Hay and Fencial 1988; Van Alstyne and Paul, 1989; Hay and Steinberg, 1992) and antifouling (Armstrong et al., 2001; Mayer and Hamann, 2004) has been reported. Various active compounds have been identified from seaweeds. The first attempt to locate bioactivity in marine algae was initiated around the 1950s. Pratt et al. (1951) studied the antibacterial activity of seaweeds followed by Mautner et al. (1956). Many reports have focused on various biomedical properties like antibacterial (Burkholder et al., 1960; Hornsey and Hide, 1976 and Caccamese et al., 1980), antiviral (Rinehart et al.,1993; Stonard and Andersen, 1980; Tachibana et al.. 1981; Kashman et al.. 1989), antifungal (Carte, 1996: Tang et al., 2002: Rajeev et al., 2004), cytotoxic (Gerwick and Fenical, 1982; Schmitz et al. 1993), antioxidant (Josephine et al., 2007; Kumar Chandini et al., 2008), anticoagulant (Matsubara et al., 2001) and various pharmacological activities (Yamaguchi et al., 1996; Faulkner, 2002; Mosaad et al., 2006). Also, the seaweed surface associated of bacteria play a role and assists the hosts in antifouling defense (Paul et al., 1987). The epiphytic bacteria possess antagonistic activity (Emmanuel Joshua Jeba Singh et al., 2008). The environmental factors like light intensity, nutrient levels, salinity and seasons influence the secondary metabolites production (Van Aistyne, 1988). The vast literature on natural products from seaweeds especially pertaining to the objectives of the study has been presented in table format. S. NO 1. 2. 3. 4. Author Year Pratt, R., R. Mautner, 1951 G.M. Gardner, y. Sha and J. Dufrenoj Mautner, H. C., G.M. 1953 Gardner, and G.M. Pratt Vacca, D.D. and R.A. 1954 Walsh ............ Gerber, P., J. Dutcher, E. 1958 Adams and J. Sherman Works Report on antibiotic activity of Indian I seaweed extracts. Antibiotic activity of seaweed extracts. uric dFLJO3CLCIIdI activity 01 an extract obtained from Ascophyllum nodosum. Protective effect of seaweed extracts for chicken embryos infected with influenza P rr mi mr c xiir"c I I I 5. 6. 7. Allen, M.B. and W. Y. 1960 Dawson Burkholder, P. R. L. 1960 Burkholder and L. R. Almodovar Maritinez-Nadar, N. G., 1963 L.C. Rodriguez and C. Casillas, Sarganin and Chonalgin II VI LI .2. Production of antibacterial substance by benthic tropical marine algae. Antibiotic activity of some marine algae of Puerto Rico. New antibiotics substances from marine algae from Puerto Rico 10 1 Lefevse, M. 8. 9. 1964 11. Olesen,P.E., A. Maretzki and L.A. Almondoras Burkholder, P.R., L.M. Burkholder and L. R. Almodovar Chapman, V.J. 1970 12. Glowbitza, K.W. 1970 10. 13. 14. 15. 16. 17. 18. 19. 20 21 22. 23. Rao, M I Dawes, C. J. Fenical, W., J.J. Sims, D. Squatrito, R.M. Wing and P. Radlick Bhakuni, D. and Y.M. Silva Hornsey, I.S. and D. Hide Moebus, K. and K.M. Johnson Fenical,W. Sachithananthan, K., and A. Sivapalan Sims, J.J., M.S. Donnell, J.V. Leary and aH.Lacy Hornsey, I.S. and D. Hide Hornsey, I.S. and D Hide 247Ehresmann, D.W., E.F. Deig, M.T. Hatch, L.H. Di Salvo and N. A. Vedros 25. 26. Faulker, D.J. Parekh, K.S. 27. Richards, JT., E. R. Kern, L.A. Glasgow, J.C. Overall, E.F. Deign and M.T. Hatch 1964 1966 - 1970 Extra cellular products of Algae. In: Algae and man. An investigation of antimicrobial substances from marine algae. Antibiotic activity of some marine algae of Puerto Rico. Seaweeds and their uses. Antimicrobial Constituents in algae. Quantitative determination of acrylic acid in marine algae. The economic seaweeds of India. 1971 lndole-3-acetic acid in the green algal coenocyte Caulerpa prolifera (Chlorophyceae, Siphonales). 1973 Zonarol and Isozonarol, fungitoxic hydroquinones from the brown seaweed Dictyopteris zonarioides. 1974 Biodynamic substances from marine algae. 1974 The antimicrobial production of I compounds by British Marine algae. 1974 Exudation of dissolved organic 'C' by brown_algae. 1975. Halogenation in the Rhodophyta: a review. 1975 Antibacterial properties of some marine algae of Sri Lanka 1975 j Antimicrobial Agents from Marine Algae. 1976 1 The production of anti microbial a compounds by British marine algae II. Seasonal variations in production of antibiotics. 1976b The production of antimicrobial compounds by British marine algae.IIl. Distribution of activity within the algal thallus. 1977 Antiviral substances from Californian marine algae. Antibiotics from algae. pharmaceutically and Antimicrobial active substances from marine sources. 1978 - Antiviral activity of extracts from marine algae. 1978 1978 IN Marine derived In: I antoti cs Antibiotics: Isolation, separation and purification. 29. Caccamese, S. and R. 1979 Screening for antimicrobial activities in Azzolina marine algae from Eastern Sicily. 30. Glombitza, K.W. 1979 Antibiotics from algae. 31.[ãamese, -- S., ft 1980 Antimicrobial and antiviral activities of Azzoline, G. Furnasi, M. extracts from Mediterranean algae. Cormaci and Y. S. Grasso 32. Chapman, V.J. and D.J. 1980 1 seaweeds and their uses Chapman Kazlauskas, R., J. 1980 New metabolites from the brown alga Mulder, P.T. Murphy and Caulacystis caphalornithos. R.J. Wells 34. Naqvi, SW., A. Solimabi, 1980 creening oi some marine piants Irom S. Y. Kamat, L. the Indian coast for biological activity. Fernandes, C.V.G. Reddy, D.S. Bhakuni and B.N. Dhawan 1 1980 Antispasmodic and Anti-inflammatory I 35. Solimabi and B. Das activity of Carrageenan from Hypnea musciformis wulfen. 36. ! Caccamese, S., R 1981 Antimicribial and antiviral activities of Azzolina, G. Furnari, M some marine algae from eastern Sicily Cormaci and S. Grasso 37. Gerwick, W.H. and W 1981 lchthyotoxic and cytotoxic metabolites Fenical of the tropical brown alga Stypopodlum - zonale (Lamouroux) Papenfuss --- 38f Gerwick, W.H. 1981 The natural product chemistry of the Dictyotaceae. 39. Naqvi, S.W., A,Solirnabi, 1981 Screening of some marine plants from S.Y. Kamat, L. Fernandes the Indian Coast for biological activity. and C.V.G. Reddy 40 Sreenivasa Rao, P. and 1981 Antibacterial activity of Indian seaweed, K.S. Parekh extracts 41 De Silva, S.M.S., S.K.T. 1982 Antibacterial activity of extract from the brown seaweed Stoechospermum Carnage, N.S. .kumar marginatum. and S. Balasubramaram L... 42. Fenical, W. 1982 Natural products chemistry in the marine environment 43. Hoppe, H.A. and T. 1982 Marine Algae in Pharmaceutical -- -. Levring Science. 1984 Seaweeds in pharmaceutical studies Baker, J.T. and applications. .11. 45. Dosai, R. G. 1984 - polysaccharides from Indian seaweeds Y.A., Parekh, V.D. Chauhan - and 46. Fenical, W. and V.J. Paul 1984 Antibiotic and cytotoxic terpenoids from tropical green algae of the family 28. Shield, L.S. and K.Lj1978 Rinehart _J Udoteaceae 477Jtndlay, J.A. and A.D. r1984 Antibacterial constituents of the diatom Patil 48. Khan, K.H. and 4^^j and Mahmood Nay/cu/a de/ognei .A. 1984 TAntibacterial and antifungal activities of marine algae from Karachi seashore of Pakistan. 49. Ma, J.W. and W.C. Tan 1984 Screening for antimicrobial activities in marine algae from the Quingdao coast, China. 50. Parekh, K. S., H.H. 1984 Antibacterial activity of Indian Parekh and P.S. Rao seaweeds. Pederson, A. 1984 Studies on phenol content and heavy metal uptake in fucoids 52. Pesando, D. and B. 1984 Screening of marine algae from French Caram Mediterranean coast for antibacterial and antifungal activity. 53.1Rao,NLS.A.V.P K.V. 11984 Carbohydrates of Padina Sastry and E.V. Rao tetrastromatica. 54. Reichelt, J.L. and KTi Antimicrobial activity from marine algae. Borowitzka Results of a large scale screening programme. J. and CA. 1984 Borden 56. Caccamese, S., R.M. 1985 I Toscano, G. Furnari and M. Cormaci____ 57. Glombitza, K.W. and K. 1985 j Kiapperich 51 Stein, I 58. Jacobs, R.S., P. Culver, R. Langdon, T. O'Brien Jnd S. White 59. Parekh, K., H. Parekh, I H.M. Mody and P.S. Rao 1985 Causative and beneficial algae in human disease conditions. Antimicrobial activities of red and brown algae from Southern Italy coast. _____ Antibiotics from algae. XXXIV Cleavage of the high molecular weight methylated phlorotannin fraction from the brown _Laa Pelvetia cana/icu/ata. Some pharmacological observations on marine natural products Effect of antibacterial substances from seaweeds on the growth of bacteria marine plants their biology, chemistry and Utilization. co 7 Padmakumar, K. and K. 1986 Antimicrobial activity some marine Ayyakkannu algae of Porto Novo and Pondicherry j_waters,eastcoastof±ndia. 61. Ballantine, D. L., W. H. 1987 Antibiotic activity of lipid soluble extracts from Caribbean marine algae. I Gerwick, S.M. Velez and E. Alexander 62. Chennubhotla, V.S.K., N. 1987 Seaweed resources of India Kaliaperumal and S. I Kalimuthu 63. llvessalo, H. and J. 1987 Nutrient availability and accumulation of Tuomi I phenolic compound in the brown algae Fucusvascu/osu.s I () Maruyama, Nakajima, Yamamoto 64. A study on the anticoagulant and fibrinolytic activities of a crude fucoidan and from the edible brown seaweed Laminar/a religiosa, with special reference to its inhibitory effect on the growth of sarcoma180 ascites cells subcutaneously implanted into mice 1 Paul, V.J. and W 65. Natural products chemistry and I Fenical chemical defense in tropical marine algae of the phylum Chlorophyta. 66. Paul, V.J., MM. Littler, 1987 Evidence for chemical defense in D. S. Littler and W. tropical green algae Caulerpa Fenical ashmeadii (Caulerpaceae: Chlorophyta): Isolation of new bioactive sesquiterpenoids. 67. Rosell, K.G and L.M. 1987 Fatty acids as antimicrobial substances Srivastava in brown algae. 68. Viso, A.C., D. Pesando 1987 Antibacterial and antifungal properties and C. Baby of some marinediatoms in culture 69. Ireland, C.M., D.M. Roll, 1988 Uniqueness of the marine environment: T. F. Molinski, T. C. categories of marine natural products Mckee, T.M. Zarbriske from invertebrates In: Biomedical and J.C. Sweresy importance of_marine _organisms. 70. Mearns—Spragg, A., M. 1988 Cross- species induction and Bregu, K.G. Boyd and enhancement of antimicrobial activity J.G. Burgess produced by epibiotic bacteria from marine algae and invertebrates after exposure to terrestrial bacteria 71. PadmakumarK. 1988 Bio active substances from marine algae and mangroves. 72. Raghukumar, C. and bT1988 Changes in the marine green algae Chandramohan I Chaetomorpha media on infection by a fungal pathogen. 73. Sreenivasa Rao,P.P 1988a Antibacterial activity from Indian species P. Sreenivasa Rao and of Sargassum. LS.M._Karmarkar 74. Asari, F., T. Kusumi and 1989 Turbinaric acid, a cytotoxic H. Kakisawa secosqualene carboxylic acid from the brown alga Turbinaria ornata. 1989 Novel Pharmaceutical compounds from 75. I Austin, B. Jjmarine bacteria. 7. Dave, M.J. and V.D. 1989 Seaweed as a source of food, feed and Chapman fertilizer invention intelligence. P7. Glombitza, K.W. and M. 1989 Secondary metabolites of Koch pharmaceutical potential. Graufel ,V., B. Kloareg, 1989 New natural polysaccharides with S. Mabeau, P. Durand potent antithrombic activity: - and J.Jozefonvicz jucans from brown algae 79. Kobashi, K. 1989 Pharmacological active metabolites from symbiotic microalgae in Okinawan marine invertebrates. L -. J. 1987 8 I E7. 80. Watanabe, K., -. M. 1989 Miyakado, N. Ohno, A. j Okada, K. Yanagi and K. Monguchi ___ 81. Caballero Ortega, P. and1990 F.R. Melian_Gonzalez 82. Furusawa, E. and S. 1990 Furusawa A polyhalogenated insecticidal monoterpene from the red alga, -- Plocamium telfa/riae Antimicrobial activities in algae extracts fromthe cost of Grand Canary Island. Antitumor potential of low-dose chemotherapy manifested in combination with immunotherapy of Viva-Natural, a dietary seaweed extract, onLewis lung carcinoma Pharmacological activities of marine algae.__ Antitumor activity of marine algae 83. Guven, K.C., B. Guvener 1990 and E. 84. Noda, H., H. Amano, K. 1990 Arashima and K. Nisizawa - 85. Perez, R.M.G., J.G.A. 1990 Antimicrobial activity of some American Avila, S.G. Perez, A.C. algae. Martinez and G. C. Martinez 86I Pesando, D. 1990 Antibacterial and antifungal activities o—fl marl_ I __ 87. Sreenivasa Rao, PP., P. 1 1990 Antibacterial activity of Sargassum Sreenivasa Rao and w/ghtii. S.M. Karmakar 88. Numata, A., S. Kanbara, 1991 Cytotoxic activity of marine algae and C. Takahashi, R. Fujiki, cytotoxic principle of the brown alga M. Yoneda , E. Fujita and Sarrgassum tort/le . Y. Nabeshima - .Sreenivasa Rao, PP. 1991 Biological investigation of Indian marine 89. algae and screening of some green, red and brown seaweeds for their antimicrobial activity 90. Sridhar, K.R. and N. 1991 Antimicrobial activity of seaweeds. _J Viyvathi 91. Tariq, V.N. 1991 Antifungal activity in crude extracts of marine red algae. 92. Ballesteros, E., D. Martin 1992 Biological activity of extracts from some and M.J. Uriz . Mediterranean macrophytes 93. Clardy, J., K.M. Snader 1992 A pentahalogenated monoterpene from and M.R. Boyd the red alga Port/er/a hornemannii i I . produced a novel cytotoxicity profile against a diverse panel of human tumor cell lines. 94. Garg, H.S., T. Sharma, 1992 An antiviral Sphingosine derivative from D.S. Bhakuni, B.N. green alga U/va fasc/ata and Bo s e _Jramanik A. 95. Guerriero, A., A.t 1992 Isolation of toxic and potentially toxic Meinesz, M. DAmbrosio sesqui and monoterpens from the and F. Pietra tropical green seaweed Cauferpa taxifof/a which has invaded the region of Cap Martin and Monaco. 21 96. Kumar, V. 97. Lustigman, B., L.H. Lee and N. Thees 98. Naqvi, B.S., A. Khan, D. Shaikh and M.R. Shaikh 99. Ohigashi, H., Y. Sakai, K. Yamaguchi, I. Umezaki and K. Koshimizu 100 Paul, V.J. 101. Sreenivasa Rao, P.P. 102. Ahmad, VU., S.A. Perveen and M. Shamed 103.I Cannell, R.J.P. 105. Guerriero, A., F. Marchetti, M. D'Ambrosio, S. Senesi, F. Dini and F. Pietra 106. Ireland, C.M., B.R. Copp, M.P. Foster, L.A. McDonald, D.C. Radisky and J.C. Swersey 107. Kajiwara, T., K. Kodama, A. Hatanaka --and K. Matsui 108. Lemee, R., D. Pesando, M. Durand-Clement and ---A. Dubreuil ____ _____ 109. Lincoln, R.A., K. Stupinsky and J. M. .J_Walter 110. Renn. D.W. 1992 Biocidal activity of certain marine algae from Tuticorin_coast. 1992 Production of antimicrobial substances by macroalgae of the New York I New Jersey coast. 1992 Nematicidal properties of selected Marine Algae From Karachi. 1992 Possible anti-tumor promoting properties of marine algae and in vivo activity of Wakame ..Lseaweed extract 1992 Ecological roles of marine natural products. 1992 Biological investigations of India Phaeophyceae 10. Seasonal variation of antimicrobial activity of fractions from Sargassum Johnston/i Setchell et Gardner from Okha, West Coast of India 1993 Sterols from marine green algae Codium decortacatum. 1993 Algae as a source of biologically active p roducts. _____ _______ 1993 Marine natural products chemistry 1993 New ecotoxicologically and biogenetically relevant terpenes of the tropical green seaweed Caulerpa taxifolia which is invading the Mediterranean 1993 Biomedical potential of marine natural products 1993TVotatile compounds from Japanese marine brown algae. 1993 Preliminary survey of toxicity of the green alga Caulerpa taxifolia introduced ____ into the Mediterranean. 1993 I Bioactive compounds from algae 1993 Medical and biotechnological applications of marine macroalgal I polysaccharides 111 Hun, W.W., G.S. Hock 1994 Antibacterial properties of Malaysian and P.S. Moi seaweeds. 112 Ayyad, S.E.N. and F.A. 1994 Caulerpin, an antitumor indoe alkaloid Badria JfromCaulerpa racernosa - 113 Becerro, MA., N. L. 1994 Antimicrobial activity and surface Lopez, X. Turon and M.J. bacterial film in marine sponges. Un iz - ....J._____________ -- - -. - 114. Kaliaperumal, N. 1994 Seaweed resources of Tamilnadu coast 115. Kamat. S.Y., S.D. 1994 Wahidulla, L. Souza, C.G. Naik, V. Ambiye, D.S. Bhakuni, S. Jam, A.K. Goeland R.C. Srimal Newman, D.J., K.M. 1994 Snader and M.R. Boyd Bioactivity of marine organisms: Part VII--Effect of seaweed extract on central nervous system 116. 117. Sastry, V.M.V.S. G.R.K. Rao and 1994 1994 R. Sridharan, G. K. .jjrivedi and H.H. Mathur 119. Boisson-Vidal, C., F. 1995 Haroun, M. Ellouali, C. Blondin and J. Jozefonvicz 120. Jurd, K.M., D.J. Rogers, 1995 G. Blunden and D.S. McLellan 121. Kaliaperumal, N. S. 1995 Kalimuthu J. R. and ____ Ramalingam 122. Mahasneh,l., M. Jamal, 1995 M. Kashasneh and M. Ziodeh 123. Sreenivasa Rao, P.P. 1995 Steinberg, P.D. 1995 125. Bauer, A.W., W.M. Kirby, 1996 K.C. Sherris and M. Turck ____ 126. I Bongiorni, L. and F. 1996 Pietra ii Cart, B.K. - 1996 128. 129 130. Chennubhotla, V.S.K._1996 Harlin, M.M. - 1996 Okai, Y K. Higashi- 1996 Okai, Y. Yano and S. Otani 131. Premila Crasta JN.S. 1 1996 I Raviraja and K. I Sridhar -1 Isolation and structure/activity features of halomon- related antitumor monoterpenes from the red alga Port/er/a hornemann/j. Antibacterial substances from marine algae: Successive extraction using benzene, Chloroform _and _Methanol. Antimicrobial activities of marine algae from the Indian coast. Biological activities of polysaccharides from marine algae. Anticoagulant properties of sulphated polysaccharides and a proteoglycan from Cod/u n r fragile ssp. atlanticurn. Economically important seaweeds Antibiotic activity of marine algae against multiantibiotic resistant bacteria Antimicrobial activity of frozen samples of genus Sargassurn Collected from Okha, West coast of India. Seasonal variation in the relationship between growth rate and phlorotannin production in the kelp Ecklonia radiata. Antibiotic susceptibility testing by a standardized single disc method. Marine natural products for industri —al 1 applications. Biomedical potential of marine natural pro-ducts Seaweed and their importance -- . -. Allelochemistry in marine macroalgae. Identification of antimutagenic substances in an extract of edible red alga. Porphyra tenera(Asadusa-non) Antimicrobial activity of some marine algae of Southwest Coast of India 23 132. Robles-Centeno, P. 0., 1996 D.L. Ballantine and W.H. Gerwick 133. Vlachos, V., A. Critchley 1996 and Y.A. Von Holy, 134. Anggadiredja, J., R. 1997 Andyani, R. Hayati, K.H. I Muawanah 135. Carlucci, M.J., C.A. 1997 Pujol, M. Ciancia, M.D. Noseda, M.C. Matulewicz, E.B. .pamonte,A.s.cerezo 4 136. Cho, E.J., S.H.Rhee and 1997 K.Y. Park 137. Fenical, W. 1997 138. Harada, I Kamei H. and Y. 1997 139. Konig, G.M. and A.D. '1997 Wright L 140. Matsukawa, R., Z. 1997 Dubinsky, E. Kishimoto, K. Masaki, Y. Masuda, T. Takeuchi, M. Chihara, Y. Yamamoto, E. Niki and I. Karube 141. Mearns-Spragg, A., K.G. 1997 Boyd, M.O. Hubble and J.G. Burgess 142. Melo, V.M.M., D.A. 1997 Medeiros., F.J.B. Rios. L.I.M. Castelar and A. de FF.U.Carualho 141 Okai, Y. and K. Higashi- 1997 Okai, Dynamics of antibacterial activity in three species of Caribbean marine alga as function of habitat and life history. Establishment of protocol for testing antimicrobial activity in southern African ma croa lgae. Antioxidant activity of Sargassum polycystum (Phaeophyta) and Laurencia obtuse (Rhodophyta) from Seribu Islands Antiherpetic and anticoagulant properties of carrageenans from the red seaweed Gigartina skottsbergii and their cyclized derivatives: correlation between structure and _biological activity Antimutagenic and cancer cell inhibitory effects of seaweeds New oharmaceuficals from marine organisms. Selective cytotoxicity of marine algae extracts to several human leukemic cell lines:____ Sesquiterpene content of the antibacterial dichiormethane extract of the red alga Laurenciaobtusa. A comparison of screening methods fo-r antioxidant activity in seaweeds Antibiotics from surface associated marine bacteria. Proceedings of the fourth under water science symposium, Society for underwater Technology, London Antifungal properties of proteins (agglutinins) from the red alga Hypnea musciformis (wulfen) Lamouroux Potent anti inflammatory activity of pheophytina derived from edible green algae Enteromorpha prolifera (Sujiaonori) 144. Padmakumar, K. and K Seasonal variation of antibacterial and Ayyakkannu antifungal activities of the extracts of marine algae from Southern Coast of LIndia. 145. Park. J.C., J.S. Choi. 11997 Hepatoprotective effect of extracts and S.H. Song, M.R. Choi, phenolic compound from marine algae K.Y. Kim and J.W. Choi in bromobenzene-treated rats 24 146 Riguera, R. 1997 Isolating bioactive compounds from marine organisms. _J 147 Siddhanta A. K., K. M. 1997 Bloactive of marine organisms part VIII Mody, B.K. Ramavat, - screening of some marine flora of V. D. Chauhan, H.S. I Western Coast of India Garg, A.K. Goel, M. Jinandra Doss, M.N. Srivastava, G.K. Patnaik andV.P. 2L.__ 148. Vlachos, V., A.T. 1997 Antimicrobial activity of extracts from Critchley and A. Von selected Southern African Marine Hy macroagae - 149 Davyt, D., W. Entz, R. 1998 A new indole derivative from the red Fernandez, R. alga Chondria atropurpurea. Isolation, Mariezcurrena, A.W. structure determination and Mombru, J. Saldana, L. anthelmintic activity. Dominguez, J. Coil and E. Manta 150 de Nys, R., A. Dworjanyn 1998 I A new method for determining surface and P.D. Steinberg concentrations of marine natural products on seaweeds. 151 Fernandez, J.J_, M.L. 11998 Evaluation of the Cytotoxic Activity of Souto and M. Norte Polyethers Isolated from Laurencia 152 Harada, H. and Y. Kamei 1998 Dose-dependent selective cytotoxicity of extracts from marine green alga Cladophoropsis vaucheriaeformis, against mouse Ieu kemia L1210 cells. 153.J1i15euI, N., V.S.K. 1998 Seaweed resources and distribution in Chennubhotla, S. deep waters from Dhanushkodi to Kalimuthu, J. R. Kanyakumari Ramalingam, S. Krishnapillai, K. Muniyandi, K. Rama Rao, P.C. Thomas, S.H. Zaidi _Jand K. Subbaramaiah 154. Le Tutour, B., F. 1998 Antioxidant and prooxidant activities of Benslimane, M. P. the brown algae, Laminaria digit ata, Gouleau, J.P. Gouygou, Himant ha/ia elongata. Fucus B. Saadan and F. vesiculosus, Fucus serratus and Quemeneur Ascophyl/um nodosum 1998 Biological investigations of Indian 155. I Sreenivasa Rao, P.P. PhaeophyceaeXVL4. Seasonal variation of antibacterial activity of frozen _____ samples of Sargassum johnston/i - 156. Wright. A.E. 1998 Isolation of marine natural product. In: Methods of Biotechnology 157. Yan, X. T. Nagata and 1998 Antioxidative activities in some common -.X.Fan seaweeds -158. Ara. J., V. Sultana, S. 1999 Cytotoxic Activity of Marine MacroEhteshamul-Haque, R. algae on Artemia sal/na (Brine Shrimp) Qasim and V.U. Ahmad 159 Backhaus, T. and L.H. 1999 Grimme Centeno, P.O.R. and 1999 D.L. Ballantine 161 Duran,R., L. Garrido, 1999 M.J. Ortiga, A. Rueda, J. Salva and E. Zubia 162. Funahashi, H., T. lmai, 1999 Y. Tanaka, K. Tsukamura, Y. Hayakawa, T. Kikumori, T. Mase, T. Itoh, M. Nishikawa, H. Hayashi, A. Shibata, Y. Hibi, M. Takahashiand T. Narita 163 I Galinski, E.A. and P. 1999. Louis The toxicity of antibiotic agents to the luminescent bacterium Vibrio fischeri. Effects of culture conditions on production of antibiotically active metabolites by the marine alga Spyridia filament osa Bioactive natural compounds of algae and invertebrates from the littoral of Cadiz Wakame seaweed suppresses the proliferation of 7,12-dimethylbenz(a)anthracene-induced mammary tumours in rats Compatible solutes: ectoine production and gene expression. In A. Oren (ed), Microbiology and biogeochemistry of - hypersaline environments. 164. Horikawa, M., Noro. T 1999 In vitro anti-methicillin - resistant and Y. Kamel Staphylococcus aureus. Activity found in extracts of marine algae indigenous to the coast of Japan 165 Kaeffer,B., C. Benard, 1999 Biological properties of ulvan, a new M. Lahaye, H.M. Blottiere source of green seaweed sulfated and C. Cherbut polysaccharides, on cultured normal and cancerous colonic epithelial cells. 16 Kong, G.M., A.D. Wright ka Plocamium hamatum and its and A. Linden monoterpenes: chemical and biological investigations of the tropical marine red alga. 167. Marshall, R.A., D.B. 1999 Harper, C.W. McRoberts and M.J.Dring -- ______ 168. Mayer, A.M.S. 1999 r169. Moore, B.S. 1 1999 '170.[ftX.,Y. Chuda, M. 1999 Suzuki and T. Nagata - -. Volatile bromocarbons produced by I Falkenbergia stages of Asparagopsis spp. (Rhodopyta) Marine pharmacology in 1998: antitumor and cytotoxic compounds. 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