Agar yield, quality and standing crop biomass of Gelidium serrulatum, Gelidium floridanum and Pterocladia capillacea in Venezuela

Seaweeds agarophytes and associated epiphytic bacteria along Alexandria coastline, Egypt, with emphasis on the evaluation and extraction of agar and agarose

“…The gelling temperature of extracted agar was comparable to that of Lemus et al (1991) and FreilePelegrin et al (1996) but lower than that of Cote & Hanisak (1986). Whereas, the gelling temperature of our agar was more or less comparable to that of other agarophytes (Lemus et al 1991, Freile-Pelegrin & Murano 2005, Prasad et al 2007, lower than that of Kaliaperumal et al (1992) and Praiboon et al (2006) and higher than that of ArvizuHiguera et al (2008) and Villanueva et al (2010).…”

“…This was comparable to the results of Rao & Bekheet (1976). But lower than the results of Cote & Hanisak (1986), Lemus et al (1991). On the other hand, Freile-Pelegrin et al (1996) recorded wide range of agar yield during different seasons and from different regions.…”

“…On the other hand melting temperature of extracted agar was lower than all the results of agar recorded in the previous studies (Cote & Hanisak 1986, Lemus et al 1991, Freile-Pelegrin et al 1996. Whereas, the melting temperature of our agar was lower than of the other agarophytes in the previous studies (Lemus et al 1991, Prasad et al 2007) and higher than that of Arvizu-Higuera et al(2008) and Villanueva et al (2010).…”

“…Whereas, the gelling temperature of our agar was more or less comparable to that of other agarophytes (Lemus et al 1991, Freile-Pelegrin & Murano 2005, Prasad et al 2007, lower than that of Kaliaperumal et al (1992) and Praiboon et al (2006) and higher than that of ArvizuHiguera et al (2008) and Villanueva et al (2010).…”

“…The gel strength of extracted agar was more or less comparable to gel strength of native agar of the same alga (Rao & Bekheet 1976, Lemus et al 1991, higher than that of Cote & Hanisak (1986) and lower than that of Freile-Pelegrin et al (1996). On the other hand, gel strength of P. capillacea was higher than the remarkably low gel strength recorded in Gracilaria corticata (12.0 gcm -2 ) (Kaliaperumal et al 1992) and that of other native agarophytes (Lemus et al 1991, Freile-Pelegrin & Murano 2005, Arvizu-Higuera et al 2008& Villanueva et al 2010 except that of Gracilaria floridanum (1030.0 g cm -2 ) (Lemus et al 1991) and Gracilaria blodgetii (750.0 g cm -2 ) (Freile-Pelegrin & Murano 2005). This result was associated with low sulphate percent and high 3, 6-anhydrogalactose percent, which are considered as the gel regulating factors (Asare 1980).…”