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  • Title: Solid substrate fermentation of cassava fibrous residue for production of alpha-amylase, lactic acid and ethanol.
    Author: Ray RC, Mohapatra S, Panda S, Kar S.
    Journal: J Environ Biol; 2008 Jan; 29(1):111-5. PubMed ID: 18831342.
    Abstract:
    There is serious concern about the disposal of solid residues left after large scale extraction of starch from cassava. Owing to the high starch content (55-65% on dry weight basis) and organic matter of these wastes, an attempt has been made to utilize it for the production of three bioproducts, i.e. alpha-amylase, lactic acid and ethanol in solid substrate fermentation by incubating the solid residue at different moisture holding capacity (40-80%) and incubation period (12- 60 hr for alpha-amylase, 24-144 hr for ethanol and 2-10 days for lactic acid). The highest product yield was obtained at 60% moisture holding capacity of the residue and period of incubation varied from 36 hr (alpha-amylase), 120 hr (ethanol) to 6 days (lactic acid). This study showed that the solid residues from cassava starch factories could serve as a low-cost substrate for bioproducts production.
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