Low-cost homemade cocktails for enzymatic conversion of sugarcane and cassava bagasses.

Autor:	Díaz GV; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina., Sawostjanik Afanasiuk SS; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina., Coniglio RO; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina., Velázquez JE; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina., Rodríguez MD; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina., Zapata PD; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina., Villalba LL; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina., Fonseca MI; Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto deBiotecnología 'Dra. María Ebe Reca' (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina.; CONICET, Buenos Aires, Argentina.
Jazyk:	angličtina
Zdroj:	Environmental technology [Environ Technol] 2023 Dec; Vol. 44 (28), pp. 4313-4323. Date of Electronic Publication: 2022 Jun 30.
DOI:	10.1080/09593330.2022.2091481
Abstrakt:	The agricultural industries generate lignocellulosic wastes that can be modified by fungi to generate high value-added products. This work aimed to analyze the efficiency and the cost-effectiveness of the bioconversion of sugarcane and cassava bagasses using low-cost homemade enzymatic cocktails from Aspergillus niger LBM 134. Both bagasses were pretreated with a soft alkaline solution without any loss of polysaccharides. After the hydrolysis, a 28% of conversion to glucose and 42% to xylose were reached in the hydrolysis of sugarcane bagasse while an 80% of saccharification yield, in the hydrolysis of cassava bagasse using the homemade enzymes. Furthermore, a more disorganised surface and no starch granules were observed in the sugarcane and cassava bagasses, respectively. The bioethanol yield from sugarcane and casava bagasses was predicted to be 4.16 mg mL -1 and 2.57 mg mL -1 , respectively. A comparison of the cost of the homemade and the commercial enzymes was carried out. Similar hydrolysis percentages were achieved employing any enzyme; however, it was 1000-2000 times less expensive using the homemade cocktails than using the commercial enzymes. Therefore, the cost of obtaining glucose from bagasses was most expensive when applying the commercial enzymes. Moreover, the hydrolysis of the cassava bagasse was most efficient with the homemade cocktails. The importance and novelty of this work lie in the similar performance and the lower cost of the homemade cocktails from the fungus A. niger LBM 134 compared with the commercial enzymes on the hydrolysis of the sugarcane and cassava bagasses.
Databáze:	MEDLINE
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