WO2004015120-A1  DATABASE WPI Section Ch, Week 199024 Derwent Publications Ltd., London, GB; Class A97, AN 1990-183837 XP002261496 & SU 1 527 254 A (LENINGRAD FORESTRY ACAD) , 7 December 1989 (1989-12-07);  DATABASE WPI Section Ch, Week 199314 Derwent Publications Ltd., London, GB; Class B07, AN 1993-115187 XP002261495 & SU 1 726 519 A (KIEV FOOD IND TECHN INST), 15 April 1992 (1992-04-15);  KHOLKIN YURI I ET AL: "Purification of carbohydrate-containing substrates from plant biomass hydrolysates" APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, vol. 82, no. 2, November 1999 (1999-11), pages 135-140, XP009020850 ISSN: 0273-2289;  RIVARD CHRISTOPHER J ET AL: "Measurement of the inhibitory potential and detoxification of biomass pretreatment hydrolysate for ethanol production" APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, vol. 57-58, no. 0, 1996, pages 183-191, XP009020849 ISSN: 0273-2289;  HUGHES, JONATHAN ET AL: "The polyelectrolyte flocculation of cells in whole broth" ATV-DVWK-SCHRIFTENREIHE (2000), 20(ATV-DVWK-BUNDESTAGUNG 2000), 975-987 , XP009020882;  DATABASE WPI Section Ch, Week 199314 Derwent Publications Ltd., London, GB; Class B07, AN 1993-115187 XP002261495&SU 1 726 519 A (KIEV FOOD IND TECHN INST), 15 April 1992 (1992-04-15);  DATABASE WPI Section Ch, Week 199024 Derwent Publications Ltd., London, GB; Class A97, AN 1990-183837 XP002261496&SU 1 527 254 A (LENINGRAD FORESTRY ACAD) , 7 December 1989 (1989-12-07)US7582444-B2  C. Rivard et al., Applied Biochemistry and Biotechnology, vol. 57-58, No. 0, (1996), pp. 183-191.;  Chem. Abstr. 1985:185565 for Y. Huang, Makromol Chemie, vol. 186, No. 2, (1985), pp. 273-281.;  Derwent Abstr. 1987-305414 [43] for SU 1300032 (1987).;  Derwent Abstr. 1990-183837 for SU 1527254 (1989).;  Derwent Abstr. 1993-115187 for SU 1726519 (1992).;  Derwent Abstr. 1997-344454 [32] for HU 70453 (1995).;  Derwent Abstr. 1997-488205[45] for RU 2077594 (1997).;  Derwent Abstract 1986-281090 [43] for JP 61204100 (1986).;  J. Hughes et al., 20(ATV-DVWK-Bundestagung 2000), pp. 975-987.;  Y. Kholkin et al., Applied Biochemistry and Biotechnology, vol. 82, No. 2, Nov. 1999, pp. 135-140.EP1527186-B1  KHOLKIN YURI I ET AL: "Purification of carbohydrate-containing substrates from plant biomass hydrolysates" APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, vol. 82, no. 2, November 1999 (1999-11), pages 135-140, XP009020850 ISSN: 0273-2289;  RIVARD CHRISTOPHER J ET AL: "Measurement of the inhibitory potential and detoxification of biomass pretreatment hydrolysate for ethanol production" APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, vol. 57-58, no. 0, 1996, pages 183-191, XP009020849 ISSN: 0273-2289;  DATABASE WPI Section Ch, Week 199314 Derwent Publications Ltd., London, GB; Class B07, AN 1993-115187 XP002261495&SU 1 726 519 A (KIEV FOOD IND TECHN INST), 15 April 1992 (1992-04-15);  DATABASE WPI Section Ch, Week 199024 Derwent Publications Ltd., London, GB; Class A97, AN 1990-183837 XP002261496&SU 1 527 254 A (LENINGRAD FORESTRY ACAD) , 7 December 1989 (1989-12-07);  HUGHES, JONATHAN ET AL: "The polyelectrolyte flocculation of cells in whole broth" ATV-DVWK-SCHRIFTENREIHE (2000), 20(ATV-DVWK-BUNDESTAGUNG 2000), 975-987 , XP009020882