<p>This study aimed to explore the effect of pure oxygen aeration on generation soluble microbial products (SMP) when activated sludge was under toxic stress condition phenol. Two parallel sequencing batch reactors, one with air and other aeration, were used investigate relationships among effluent chemical demand (COD), N-acyl-homoserine lactones (AHLs), community, extracellular polymeri...

Background and objectives: Over the centuries, particular attention has been given to the beneficial properties of rose water in Iran. In recent years, the manufacturers’ successful promotion has led to the general perception that bottled rose waters are pure and safe for human consumption. However, despite defining specific quality assurance standards by the Iranian National S...

Using a pulse chase (13)CO2 plant labeling experiment we compared the flow of plant carbon into macromolecular fractions of rhizosphere soil microorganisms. Time dependent (13)C dilution patterns in microbial cellular fractions were used to calculate their turnover time. The turnover times of microbial biomolecules were found to vary: microbial RNA (19 h) and DNA (30 h) turned over fastest foll...

Net release of degraded N as NH3 and total AA plus microbial protein synthesis, quantified from incorporation of 15NH3 into microbial protein, was used to estimate the rate and extent of in vitro degradation of protein fractions isolated from alfalfa hay and silage. Seven proteins (casein, alfalfa hay, alfalfa silage, extracts from alfalfa hay and silage, and residues from alfalfa hay and silag...

Background & Aims of the Study: One way to increasing shelf life of meat is the production of sausages along with additives. One of these additives contains nitrite that in an acceptance limit is not a threat for human health but if it's amount is higher than standard, it will react in the body with secondary amine and the result is the formation of...

background: edible films and coatings have potential benefits for food packaging, particularly meat products. these coatings prevent weight loss and texture changes during shelf life by reducing moisture loss in fresh and frozen meat products. in this study, effect of calcium alginate edible coating on microbial and chemical properties of refrigerated lamb meat over a period of  5 days was inve...

To better understand the nature of the C flush that follows the rewetting of dry soil, we chemically characterized the water soluble pools following rewetting of soil dried to several different water potentials. To assess the impact that historical soil water status has on the size of the rewetting labile soluble pool, a laboratory water stress gradient was applied to soils that were collected ...

Around the world, raw materials are converted into fermented food products through microbial and enzymatic activity. Products are typically produced using a process known as batch culture, where small volumes of an old culture are used to initiate a fresh culture. Repeated over many years, and provided samples are not shared among producers, batch culture techniques allow for the natural evolut...