2014
DOI: 10.9790/3008-09564247
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Screening for Enzymatic Production Ability and Antimicrobial Activity of Actinomycetes Isolated from Soil in Hillah/Iraq

Abstract: Forty soil samples collected from different sites of Hillah city /Iraq.Sixty seven Streptomyces isolates were obtained ,purified and identified according to morphological properties and biochemical tests. All of these isolates were screened fortheir antimicrobial activity,in addition to production of some important enzymes such as amylase, protease ,cellulase and L-asparaginase.The results exhibited that five isolates ;Streptomyces sp.(SA.2 ,SK.5 , SM.42 , SS.50 and SI.63) have such potential. The most active … Show more

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Cited by 5 publications
(9 citation statements)
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“…In this study, brown was the predominant color, in contrast to those observed by Ramos et al (2015) and Silva et al (2015), who in characterizing actinobacteria strains coming from the semiarid region by cultures noted the predominance of gray, cream and white. This color variation is widely reported in the literature in actinobacteria strains originating from different regions, such as the Himalayas (Duraipandiyan et al, 2010), India (Kumar et al, 2010;Kumar et al, 2012;Das et al, 2014;Amsaveni et al, 2015), China (Yu et al, 2015), Egypt (Mabrouk e Saleh, 2014) and Iraq (Jaralla et al, 2014).…”
Section: Discussionsupporting
confidence: 64%
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“…In this study, brown was the predominant color, in contrast to those observed by Ramos et al (2015) and Silva et al (2015), who in characterizing actinobacteria strains coming from the semiarid region by cultures noted the predominance of gray, cream and white. This color variation is widely reported in the literature in actinobacteria strains originating from different regions, such as the Himalayas (Duraipandiyan et al, 2010), India (Kumar et al, 2010;Kumar et al, 2012;Das et al, 2014;Amsaveni et al, 2015), China (Yu et al, 2015), Egypt (Mabrouk e Saleh, 2014) and Iraq (Jaralla et al, 2014).…”
Section: Discussionsupporting
confidence: 64%
“…This general use has been reported in actinobacteria from marine sediments (Augustine et al, 2013;Meena et al, 2013) and soil of various habitats (Das et al, 2014;Jaralla et al, 2014.). Species within the genus are diversified regarding the use of sources, based on what the environment offers (Amal et al, 2011;Goodfellow et al, 2012.).…”
Section: Discussionmentioning
confidence: 66%
“…As amilases microbianas são uma fonte importante de enzimas que apresentam abundância e grande plasticidade, sobretudo as de origem bacteriana, apresentando grande aplicabilidade biotecnológica (ALARIYA et al, 2013). Diversas pesquisas apontam para o potencial de actinobactérias do solo na síntese de enzimas amilolíticas, secretadas como resultado de sua digestão extracelular (SILVA et al, 2015;ALVES et al, 2016;JANAKI, 2017). Neste sentido, a presença de micro-organismos em solos semiáridos com capacidade de síntese de enzimas extracelulares com potencial para degradação de susbtratos que contenham o amido, sinaliza para uma possível disponibilização de carbono livre, que pode ser utilizado por outros organismos neste habitat.…”
Section: Resultados E Discussão Atividade Enzimáticaunclassified
“…Segundo Silva et al (2015) as actinobactérias podem ser classificadas em relação a produção de enzima como cepas fortemente produtoras (IE ≥ 2), moderadamente produtoras (1,5 ≤ IE < 2), fracamente produtoras (1< IE <1,5) e não produtoras (ausência de halo de hidrólise). Assim, seguindo esta classificação, das 58 cepas de actinobactérias avaliadas, 23 foram classificadas como fortemente produtoras (39,65%), sendo 14 oriundas da serrapilheira ( Estudos realizados por Alves et al (2016) com actinobactérias isoladas de solo rizosférico da região do Baixo Acaraú, município de Marco (Ce), indicaram que 80% (31) das cepas testadas apresentaram IE>2, demonstrando forte atividade amilolítica.…”
Section: Resultados E Discussão Atividade Enzimáticaunclassified
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