Profiling of cellulose content in Indian seaweed species

The cellulose contents of Indian seaweeds

“…Dried cellulose (1 g) was soaked in 30 mL 17.5% NaOH alkali solution at 20°C for 2 h, followed by occasional shaking every 15 min. The resulting slurry was centrifuged at 8,000 rpm for c For the sake of convenience of comparison as well as for having a holistic view, the yield and α/β ratio data of the cellulose of seaweed species reported earlier (Siddhanta et al 2009) are included along with those of the present investigation 15 min. The supernatant containing β-cellulose was removed by decanting, and α-cellulose (residue) was obtained after repeated water washing until pH of the washing was about pH 7.…”

“…Alpha (α) and beta (β) fractions of celluloses were obtained using the method reported in the literature (Whistler 1963;Siddhanta et al 2009). Dried cellulose (1 g) was soaked in 30 mL 17.5% NaOH alkali solution at 20°C for 2 h, followed by occasional shaking every 15 min.…”

“…Cellulose was isolated using the method described in Siddhanta et al (2009). In the case of the calcareous seaweeds Amphiroa foliacea and Liagora ceranoides, excess hydrochloric acid was used in the final acid treatment step to neutralize the CaCO 3 present in these seaweeds.…”

“…Cellulose has a widespread distribution being found in red, brown and green seaweeds (Naylor and Russell-Wells 1934;Black 1950;Whistler and Charles 1953;Ek et al 1998;Stromme et al 2002;Mihranyan et al 2004). Recently, we have reported on the isolation and characterization of celluloses from 12 different Indian seaweed species (Siddhanta et al 2009). Cellulose exists as a mixture of two crystalline forms, α and β. α-Cellulose, or true cellulose, has a one-chain triclinic structure, whilst β-cellulose has a two-chain monoclinic structure (Sugiyama et al 1991).…”

Biodegradation of Solid Wastes of Agar Seaweed Processing Industry by indigenous cellulolytic Bacillus Pumilus LA4P

“…Cellulose crystal in nature contained as a mixture of two crystalline cellulose α (as chain has a triclinic structure) and cellulose α (as two chain monoclinic structure). Cellulose derived from algal species consisting of porous cellulose hollow like a network that sets it apart from plant cellulose 8 . Several previous studies hydrolysis waste seaweed have been done using a strong acid, thermal treatment, a commercial enzyme, and the addition of cultured yeasts Trichoderma resei, Saccharomyces cerevisiae 3,9,10,11,12,13 .…”