Cladophora

Green alga, Cladophora sp. Missouri, tailings pond 11,300 DW 5... 

The tuft-forming green alga Cladophora glomerata synthesizes a wide variety of toxic fatty acids, including capric and palmitoleic acids, which have been demonstrated to be insecticidal and allelopathic (Dodds and Gudder 1992). 

To date, no clear evidence of inducible defenses among freshwater macroalgae has been reported, in contrast to their marine algal counterparts. For example, certain species of marine brown algae increase phlorotannin production in response to damage by mesograzers (Amsler and Fairhead 2006 see Chaps. 3 and 7). Whether Chara and Cladophora, two species of freshwater chlorophytes with putative allelopathic activity, increase allelochemical concentration in response to competitors remains to be seen (see Sect. 5.7.3). 

Two moss samples (Polytrichum commune, Thuidium tamariscinum), one alga sample (Cladophora fracta), and one microalga sample (Chlorella protothecoides) were subjected to pyrolysis and steam gasification for producing hydrogen-rich gas (Demirbas, unpublished work). 

The yields of bio-oil from the samples via pyrolysis are presented as a function of the temperature (K) in Fig. 6.21. The yield of bio-oil from pyrolysis of the samples increased with temperature, as expected. The yields were increased up to 750 K in order to reach the plateau values at 775 K. The maximum yields for Polytrichum commune, Thuidium tamarascinum, Cladophora fracta and Chlorella pro-tothecoides were 31.6, 37.3, 45.0 and 50.8% of the sample at 925 K, respectively. The bio-oil yields of pyrolysis from algae were higher than those of mosses. Bio-... 

Fig. 6.21 Plots for yield of bio-oil from moss and alga samples by pyrolysis at different temperatures (K). Polytrichum commune (PC), Thuidium tamarascinum (TT), Cladophora fracta (CF), and Chlorellaprotothecoides (CP)...

Figure 6.22 shows the effect of temperature on yields of gaseous products from the samples by pyrolysis. As can be seen in Fig. 6.22, the yields of gaseous products from the samples of Polytrichum commune, Thuidium tamarascinum, Cladophora fracta and Chlorella protothecoides increased from 5.3 to 40.6%, 6.5 to 42.2%, 8.2... 

Verdel EF, Kline PC, Wani S, Woods AE (2000) Purification and Partial Characterization of Haloperoxidase from Fresh Water Algae Cladophora glomerata. Comp Biochem Physiol 125B 179... 

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