Protein hydrolysis to peptides and free amino acids and the apparent absorption of amino acids (AAaa) were evaluated in different segments of carp intestine. The AAaa analysed using Cr2O3 as a marker indicated that 73.2% of the amino acids were absorbed in the first 20% of the intestinal tract and 5.3 and 21.5, respectively, in the following segments (20% of gut length). Except for methionine a...

The role of atmospheric aerosols on climate change is one the biggest uncertainties in most global models. Organic have been identified as potential cloud condensation nuclei (CCN), and amino acids are organic molecules that could serve CCN. Amino make up a significant portion total material atmosphere, herein we present systematic study hydration for two common acids, glycine serine. We comput...

The effect of cobalt on the total proteins, protease activity, free amino acids, alanine amino transferase (ALAT) activity and aspartate amino transferase (AAT) activity were studied. The increase of total protein content in silk gland may be either due to increased efflux or decreased proteolysis activity which might lead to accumulation of protein content. The decrease of protease activity le...

The content of amino acids in plasma and urine from male albino rabbits was determined by ion-exchange chromatography and compared to values for other species. In general, the amino acids present, in the plasma and urine of rabbits are those commonly found in other species. In contrast to human urine in which t,he cont,ent of hi&dine is usually greater than the two methylated derivatives, the c...

Isolated cells from leaves of Spinacia oleracea have been maintained in a state capable of high rates of photosynthetic CO(2) fixation for more than 60 hours. The incorporation of (14)CO(2) under saturating CO(2) conditions into carbohydrates, carboxylic acids, and amino acids, and the effect of ammonia on this incorporation have been studied. Total incorporation, specific radioactivity, and po...

OBJECTIVES It has been suggested that some amino acids are involved in the pathogenesis of autistic disorders. The aim of the study was to evaluate the plasma amino acids profile in young males with autism. METHODS Total of 27 autistic boys (aged 2-10 years, the study group) without any metabolic disorders and 13 healthy boys (aged 2-9 years, control group) were included in the study. In all ...

For decades, the Martian regolith has stymied robotic mission efforts to catalog the organic molecules present. Perchlorate salts, found widely throughout Mars, are the main culprit as they breakdown and react with organics liberated from the regolith during pyrolysis, the primary extraction technique attempted to date on Mars. This work further develops subcritical water extraction (SCWE) as a...

Decreased N2 fixation in soybean (Glycine max) L. Merr. during water deficits has been associated with increases in ureides and free amino acids in plant tissues, indicating a potential feedback inhibition by these compounds in response to drought. We evaluated concentrations of ureides and amino acids in leaf and nodule tissue and the concurrent change in N2 fixation in response to exogenous u...