title: Selection of suitable mineral acid and its concentration for biphasic dilute acid hydrolysis of the sodium dithionite delignified Prosopis juliflora to hydrolyze maximum holocellulose.
abstract: Two grams of delignified substrate at 10% (w/v) level was subjected to biphasic dilute acid hydrolysis using phosphoric acid, hydrochloric acid and sulfuric acid separately at 110 °C for 10 min in phase-I and 121 °C for 15 min in phase-II. Combinations of acid concentrations in two phases were varied for maximum holocellulose hydrolysis with release of fewer inhibitors, to select the suitable acid and its concentration. Among three acids, sulfuric acid in combination of 1 & 2% (v/v) hydrolyzed maximum holocellulose of 25.44±0.44% releasing 0.51±0.02 g/L of phenolics and 0.12±0.002 g/L of furans, respectively. Further, hydrolysis of delignified substrate using selected acid by varying reaction time and temperature hydrolyzed 55.58±1.78% of holocellulose releasing 2.11±0.07 g/L and 1.37±0.03 g/L of phenolics and furans, respectively at conditions of 110 °C for 45 min in phase-I & 121 °C for 60 min in phase-II.
authors.affiliation: Department of Microbiology, Osmania University, India; Central Research Institute for Dry Land Agriculture, India.
authors.forename: Shaik
authors.initials: S
authors.lastname: Naseeruddin
authors.affiliation: Central Research Institute for Dry Land Agriculture, India.
authors.forename: Suseelendra
authors.initials: S
authors.lastname: Desai
authors.affiliation: Department of Microbiology, Osmania University, India. Electronic address: vrlinga@gmail.com.
authors.forename: L
authors.initials: L
authors.lastname: Venkateswar Rao
mesh_terms: D000143:Acids / Q000737:chemistry* / Q000494:pharmacology*; D002482:Cellulose / Q000737:chemistry / Q000378:metabolism*; D004227:Dithionite / Q000737:chemistry / Q000494:pharmacology*; D006851:Hydrochloric Acid / Q000737:chemistry / Q000494:pharmacology*; D006868:Hydrolysis / Q000187:drug effects; D008031:Lignin / Q000737:chemistry / Q000378:metabolism; D008903:Minerals / Q000737:chemistry / Q000494:pharmacology; D029862:Prosopis / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D013464:Sulfuric Acids / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000143:Acids; D008903:Minerals; D013464:Sulfuric Acids; D004227:Dithionite; D002482:Cellulose; D008031:Lignin; C033158:sulfuric acid; D006851:Hydrochloric Acid
keywords: Holocellulose; Hydrochloric acid; Inhibitors; Phosphoric acid; Sulfuric acid