Background: Cellulytic enzymes including carboxymethyl cellulases play the key role in hydrolysis of cellulose, a huge organic carbon reservoir on earth, into monomeric sugars and their eventual conversion into valuable chemicals and energy sources. Objectives: In this study, we described the identification of a basidiomycete isolate NDVN01 and optimization of culture conditions and medium com...

The source-filter model of speech production is presented from the general perspective of linear signal processing. The speech sound wave and the vocal tract are modeled as a signal and a filter, respectively. The important class of linear shift-invariant filters is introduced, and it is shown that the vocal tract can be finitely represented as a signal when it is modeled by a linear shift-inva...

Lipases have many applications in biotechnology, thanks to their ability of acylglycerides hydrolysis. They alsp possess the unique feature of acting at the lipid-water interface, which distinguishes them from esterases. Commercially useful lipases are produced by microorganisms with the extracellular lipase being produced by many bacteria including Pseudomonas. The greatest production of lipas...

The use of monoclonal antibodies produced by the hybridoma technique has had a profound impact on the biological and medical sciences. While the general technique for the production of monoclonal antibodies is available from the numerous papers which report their use, there is a need for a source which describes the procedure and its pitfalls in detail so that an investigator who decides to mak...

background: considering their specific adaption to marine milieus, marine actinomycetes constitute an excellent source for producing unique bioactive substances. they are also important sources of antibiotics and extracellular enzymes, geosmin, and enzymes with potent antibacterial and anticarcinogenic properties and low toxicity. the objective of this study is to isolate actinomycetes producin...

background and objective: use of elastin-like proteins (elps) provides high-performance protein purification without need for chromatography. in line with cost reduction and facilitation of recombinant proteins purification, which represent a high percentage of production costs, in this project, we eliminated the need for proteases in the process of separation of recombinant proteins from elp b...

the potential of bulk starter fermentation strategy for production of a cost-effective and safe source of β-galactosidase was investigated. three different bulk starter media with different compositions were selected, and an industrial yogurt starter culture strain, l. bulgaricus dsm 20081 was cultivated in these media under ph-controlled conditions (ph=5.6) at 43°c. the media consisted of 1) b...

Since the 1940s, the widespread adoption of synthetic fertilizers has reduced the need for manure as a nutrient source in crop production. This has led to separation of crop and animal production, increased use of imported feeds, and a growth in animal numbers relative to land area on dairy and other livestock farms. A net flow of nutrients into areas with a concentration of dairies is now comm...