scholarly journals Determination of the irreversible loss rate of amino acids in broilers

2019 ◽  
Author(s):  
J. van der Meulen ◽  
◽  
P. van Wikselaar ◽  
A.J.M. Jansman ◽  
◽  
...  
Keyword(s):  
Amino Acids ◽  
Loss Rate ◽  
Irreversible Loss

Effects of Trichostrongylus colubriformis (Nematoda) on the nutrition and metabolism of sheep. II.* Metabolism of urea

1974 ◽  
Vol 25 (2) ◽  
pp. 363 ◽  
Author(s):  
FB Roseby ◽  
RA Leng
Keyword(s):  
Amino Acids ◽  
Urinary Excretion ◽  
Production Rate ◽  
Feed Intake ◽  
Loss Rate ◽  
Single Injection ◽  
Irreversible Loss ◽  
Trichostrongylus Colubriformis ◽  
Plasma Urea ◽  
Plasma Urea Concentration

The effect of infection with Trichostrongylus colubriformis on the rates of production, excrehon and recycling of urea was studied in 24 Merino lambs. The production rate of urea was estimated as the irreversible loss rate of [14C]urea given as a single injection. The feed intake of all sheep was maintained at 540 g/day throughout the experiment. Parasitized sheep had a higher plasma urea concentration than their paired controls 15–35 days after they were infected. This was associated with an increase in the rate of irreversible loss and the rate of urinary excretion of urea. The additional urea lost in urine is apparently produced from ammonia released from amino acids in the tissues or in the digestive tract. ______________________ *Part I, Aust. J. Agric. Res., 24: 947 (1973).

scholarly journals Rapid Organocatalytic Chirality Analysis of Amines, Amino Acids, Alcohols, Amino Alcohols and Diols with Achiral Iso(thio)cyanate Probes

2021 ◽  
Author(s):  
Eryn Nelson ◽  
Jeffrey S. S. K. Formen ◽  
Christian Wolf
Keyword(s):  
Amino Acids ◽  
Absolute Configuration ◽  
Rapid Determination ◽  
Amino Alcohols ◽  
Enantioselective Synthesis ◽  
Widespread Occurrence ◽  
Chiral Compounds ◽  
New Methods ◽  
The Absolute

The widespread occurrence and significance of chiral compounds does not only require new methods for their enantioselective synthesis but also efficient tools that allow rapid determination of the absolute configuration,...

scholarly journals THE DETERMINATION OF ARGININE IN THE PRESENCE OF OTHER AMINO ACIDS BY MEANS OF THE SAKAGUCHI REACTION

1939 ◽  
Vol 129 (1) ◽  
pp. 263-271
Author(s):  
Lloyd E. Thomas ◽  
Janet K. Ingalls ◽  
James Murray Luck
Keyword(s):  
Amino Acids

scholarly journals DETERMINATION OF AMMONIA EVOLVED FROM α-AMINO ACIDS BY peri-NAPHTHINDAN-2,3,4-TRIONE HYDRATE AND ITS m-NITRO DERIVATIVE

1950 ◽  
Vol 184 (2) ◽  
pp. 693-696
Author(s):  
Radwan Moubasher ◽  
Aly Sina ◽  
William Ibrahim Awad ◽  
Abd-El Mogid Othman
Keyword(s):  
Amino Acids ◽  
Nitro Derivative

scholarly journals Analysis of the Mycosporine-Like Amino Acid (MAA) Pattern of the Salt Marsh Red Alga Bostrychia scorpioides

Marine Drugs ◽  
2021 ◽  
Vol 19 (6) ◽  
pp. 321
Author(s):  
Maria Orfanoudaki ◽  
Anja Hartmann ◽  
Julia Mayr ◽  
Félix L. Figueroa ◽  
Julia Vega ◽  
...  
Keyword(s):  
Amino Acids ◽  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Red Alga ◽  
Array Detector ◽  
Diode Array ◽  
Diode Array Detector ◽  
The Past ◽  
Specific Species

This study presents the validation of a high-performance liquid chromatography diode array detector (HPLC-DAD) method for the determination of different mycosporine-like amino acids (MAAs) in the red alga Bostrychia scorpioides. The investigated MAAs, named bostrychines, have only been found in this specific species so far. The developed HPLC-DAD method was successfully applied for the quantification of the major MAAs in Bostrychia scorpioides extracts, collected from four different countries in Europe showing only minor differences between the investigated samples. In the past, several Bostrychia spp. have been reported to include cryptic species, and in some cases such as B. calliptera, B. simpliciuscula, and B. moritziana, the polyphyly was supported by differences in their MAA composition. The uniformity in the MAA composition of the investigated B. scorpioides samples is in agreement with the reported monophyly of this Bostrychia sp.

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