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Process optimization for pectinase production by locally isolated fungal strain using submerged fermentation / Otimização de processos para produção de pectinase por cepa fúngica localmente isolada usando fermentação submersa
Abdullah, Roheena; Jafer, Amna; Nisar, Kinza; Kaleem, Afshan; Iqtedar, Mehwish; Iftikhar, Tehreema; Saleem, Faiza; Naz, Shagufta.
  • Abdullah, Roheena; Women University. Lahore. PK
  • Jafer, Amna; Women University. Lahore. PK
  • Nisar, Kinza; Women University. Lahore. PK
  • Kaleem, Afshan; Women University. Lahore. PK
  • Iqtedar, Mehwish; Women University. Lahore. PK
  • Iftikhar, Tehreema; Women University. Lahore. PK
  • Saleem, Faiza; Women University. Lahore. PK
  • Naz, Shagufta; Women University. Lahore. PK
Biosci. j. (Online) ; 34(4): 1025-1032, july/aug. 2018. tab, graf
Article in English | LILACS | ID: biblio-967254
ABSTRACT
The present study deals with the isolation screening and optimization of fungal strain for pectinase production. The fungal strains were isolated from different sources, including soil, fruits etc. Qualitative screening was performed on the basis of the pectin hydrolysis zone. While, quantitative screening was carried out employing submerged fermentation. Among all the strains the strains showing highest pectinolytic potential were selected identified and assigned the code Aspergillus niger ABT-5.The influence of different fermentation media on pectinase production was evaluated. The M5 medium containing 10g wheat bran, nutrient medium containing (g/l) of (NH4)2SO4 6.0, K2HPO4 6.0, KH2PO4 6.0, MgSO4.7H2O 0.1 gave the highest pectinase production. The other important physico chemical parameters including incubation period, temperature, and volume of media, size of inoculum, carbon and nitrogen sources were also optimized for pectinase production. The highest pectinase production (15.5U/ml) was obtained at 72h of incubation, pH 6, temperature 30°C, volume of media 50ml. Fructose and urea were designated as best carbon and nitrogen sources subsequently.
RESUMO
O presente estudo trata da triagem de isolamento e otimização da cepa fúngica para produção de pectinase. As cepas fúngicas foram isoladas de diferentes fontes, incluindo solo, frutas, etc. A triagem qualitativa foi realizada com base na zona de hidrólise da pectina. Enquanto, a triagem quantitativa foi realizada utilizando fermentação submersa. Entre todas as cepas, as cepas que apresentaram maior potencial pectinolítico foram selecionadas e atribuídas ao código Aspergillus niger ABT-5. Avaliou-se a influência de diferentes meios de fermentação na produção de pectinase. O meio M5 contendo 10g de farelo de trigo, meio nutriente contendo (g / l) de (NH4)2SO4 6.0, K2HPO4 6.0, KH2PO4 6.0, MgSO4.7H2O 0.1, proporcionou a maior produção de pectinase. Os outros parâmetros físico-químicos importantes, incluindo período de incubação, temperatura e volume dos meios, tamanho do inóculo, fontes de carbono e nitrogênio também foram otimizados para a produção de pectinase. A maior produção de pectinase (15,5U / ml) foi obtida às 72h de incubação, pH 6, temperatura 30 ºC, volume dos meios 50ml. A frutose e a ureia foram designadas como melhores fontes de carbono e nitrogênio posteriormente.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Polygalacturonase / Aspergillus niger / Triticum / Fermentation Type of study: Qualitative research Language: English Journal: Biosci. j. (Online) Journal subject: Agricultura / Disciplinas das Ciˆncias Biol¢gicas / Pesquisa Interdisciplinar Year: 2018 Type: Article Affiliation country: Pakistan Institution/Affiliation country: Women University/PK

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Full text: Available Index: LILACS (Americas) Main subject: Polygalacturonase / Aspergillus niger / Triticum / Fermentation Type of study: Qualitative research Language: English Journal: Biosci. j. (Online) Journal subject: Agricultura / Disciplinas das Ciˆncias Biol¢gicas / Pesquisa Interdisciplinar Year: 2018 Type: Article Affiliation country: Pakistan Institution/Affiliation country: Women University/PK