Abstract：
:Optimum culture conditions which ease the synthesis of a novel exopolysaccharide (EPS) from a potent marine strain Streptococcus phocae was proposed in this study. The strain grows well at 35 °C, pH 7.0 and NaCl (2%) with lactose and yeast extract as best carbon and nitrogen sources. The maximum yield of EPS (11.75 and 12.14 g/L) was obtained in the presence of lactose and yeast extract at a concentration of 20 g/L respectively. EPS was refined by gel filtration chromatography using phenyl Sepharose column which revealed the presence of arabinose, fructose and galactose sugar units with molecular mass about 2.8 × 10(5) Da. Emulsifying and flocculating stability of EPS compared with three commercial hydrocolloids. EPS exhibited better activities which are similar to that of commercial hydrocolloids. Both crude and purified EPS exhibited strong antioxidant potential by quenching hydroxyl and superoxide anion radicals. Antibiofilm activity by inhibition of Gram positive and Gram negative biofilm forming bacteria was evident in our studies. Potential antioxidant activity and biofilm inhibiting property of EPS may lead to the development of novel food grade adjuncts.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Kanmani P,Satish kumar R,Yuvaraj N,Paari KA,Pattukumar V,Arul Vdoi
10.1016/j.biortech.2010.12.118subject
Has Abstractpub_date
2011-04-01 00:00:00pages
4827-33issue
7eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00011-3journal_volume
102pub_type
杂志文章abstract：:Metal mobilization and immobilization catalyzed by microbial action are key processes in environmental biotechnology. Metal mobilization from ores, mining wastes, or solid residues can be used for recovering metals and/or remediating polluted environments; furthermore, immobilization reduces the migration of metals; c...
journal_title：Bioresource technology
pub_type： 杂志文章,评审
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abstract：:In order to explore changes in microbial enzyme activity and bacterial community, a 60-day composting experiment was conducted using cattle manure and straw under aeration rates of 0.45, 0.68, and 0.90 L min-1 kg-1 fresh weight. High aeration rate increased the cellulase, urease, alkaline and acid phosphatase activiti...
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abstract：:The natural phenolic compounds syringaldehyde and vanillin were compared to the synthetic mediators 1-hydroxybenzotriazole, violuric acid and promazine in terms of boosting efficiency in a laccase-assisted biobleaching of eucalyptus kraft pulp. Violuric acid and 1-hydroxybenzotriazole revealed to be the most effective...
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abstract：:The α-galactosidase gene, RmGal36, from Rhizomucor miehei was cloned and expressed in Escherichia coli. The gene has an open reading frame of 2256bp encoding 751 amino acid residues. RmGal36 was optimally active at pH 4.5 and 60°C, but is stable between pH 4.5 and 10.0 and at a temperature of up to 55°C for 30min reta...
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pub_type： 杂志文章
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abstract：:Culture conditions were optimized for an extracellular cold-active protease production by the psychrophilic bacterium Colwellia sp. NJ341. Response surface methodology was applied for the most significant fermentation parameters (casein, citrate sodium, temperature and Tween-80) identified earlier by one-factor-at-a-t...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2007.03.028
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abstract：:It was demonstrated that pulsed microwave irradiation is a more effective method to accelerate the esterification of free fatty acid with a heterogeneous catalyst than continuous microwave irradiation. A square-pulsed microwave with a 400 Hz repetition rate and a 10-20% duty cycle with the same energy as the continuou...
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2018-07-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2014-11-01 00:00:00
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pub_type： 杂志文章
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更新日期：2014-01-01 00:00:00
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更新日期：2018-08-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2006.02.013
更新日期：2007-02-01 00:00:00
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更新日期：2014-06-01 00:00:00
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更新日期：2021-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：2012-11-01 00:00:00
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更新日期：2018-03-01 00:00:00
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更新日期：2020-10-01 00:00:00
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更新日期：2013-05-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2013-05-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2020-10-01 00:00:00
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journal_title：Bioresource technology
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