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Prospects of crude enzymes in replacing pure enzymes for dissolving pulp production.
Kaur, Prabhjot; Sharma, Jitender; Bhardwaj, Nishi Kant; Bhardwaj, Shubhang; Kaur, Daljeet; Singh, Amarjit; Kumar, Ashish.
Afiliación
  • Kaur P; Department of Biotechnology, Kurukshetra University, Kurukshetra, 136119 Haryana India.
  • Sharma J; Department of Biotechnology, Kurukshetra University, Kurukshetra, 136119 Haryana India.
  • Bhardwaj NK; Avantha Centre for Industrial Research and Development, Paper Mill Campus, Yamuna Nagar, 135001 Haryana India.
  • Bhardwaj S; Present Address: Department of Paper Technology, IIT-Roorkee, Saharanpur campus, Saharanpur, 247001 Uttar Pradesh India.
  • Kaur D; Central Pulp and Paper Research Institute, Uttar Pradesh, Saharanpur, 247001 India.
  • Singh A; Department of Biotechnology, Kurukshetra University, Kurukshetra, 136119 Haryana India.
  • Kumar A; Department of Botany, Guru Nanak Khalsa College, Yamuna Nagar, 135001 Haryana India.
3 Biotech ; 14(10): 228, 2024 Oct.
Article en En | MEDLINE | ID: mdl-39268411
ABSTRACT
High-purity cellulose from paper pulp can be obtained after appropriate treatments involving pure xylanases and cellulases/endoglucanases. This study investigated the efficacy of using crude xylanase and cellulase instead of commercial ones to improve process economics. Kraft paper grade pulp produced from veneer waste, hardwood, and non-wood sources was utilized as a more sustainable option. Crude xylanase and cellulase from isolated soil bacteria Bacillus pumilus 3GAH and Bacillus subtilis PJK6 were used for process optimization. The correlation between Fock reactivity, chain scission, and crystallinity after crude-cellulase treatment was established through chemical, FTIR, and XRD analyses. Pentosans in kraft pulp were reduced from an initial 18.7% to 4.9% through sequential treatments with crude xylanase and alkali. Subsequent crude-cellulase treatment, even at 8 U/g o.d. pulp, improved Fock reactivity from 28.2% to 61.2%, fulfilling a major criterion for viscose. Thus, crude enzymes can be effectively used for the efficient and economical upgrading of paper pulp to dissolving pulp.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: 3 Biotech Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: 3 Biotech Año: 2024 Tipo del documento: Article Pais de publicación: Alemania