scholarly journals Inefficient feeding by Calanus helgolandicus and Temora longicornis on Coscinodiscus wailesii: quantitative estimation using chlorophyll-type pigments and effects on dissolved free amino acids

1989 ◽  
Vol 52 ◽  
pp. 145-153 ◽  
Author(s):  
S Roy ◽  
RP Harris ◽  
SA Poulet
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Quantitative Estimation ◽  
Temora Longicornis ◽  
Calanus Helgolandicus ◽  
Coscinodiscus Wailesii

scholarly journals The Effect of Mineral Nutrition on the Content of Free Amino Acids and Amides in Tomato Plants I A Comparison of the Effects of Deficiencies of Copper, Zinc, Manganese, Iron, and Molybdenum

1956 ◽  
Vol 9 (4) ◽  
pp. 539 ◽  
Author(s):  
JV Possingham
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Mineral Nutrition ◽  
Free Amino Acids ◽  
Free Amino ◽  
Quantitative Estimation ◽  
Acid Fraction ◽  
Tomato Plants ◽  
Copper Zinc

The lovel and the qllHnj~itat,jve compositien of the free amino acid fraction of tomato plants grown in full nutrient and in cultures doficiollt ill zinc, copper, nlallganeso, iron. and molybdenum have beon cletormiuecl. 'I'he methods used in the investigation inelude the quantitative estimation of amino aeids by a technique involving paper chromatogl'l1phy, and the cultm'o of tomato plants in highly purified n utriollt solutions.

Factors in Resistance of Peas to the Pea Aphid, Acyrthosiphon pisum (Harr.) (Homoptera: Aphididae). II. Amino Acids

1957 ◽  
Vol 89 (10) ◽  
pp. 457-464 ◽  
Author(s):  
J. L. Auclair ◽  
J. B. Maltais ◽  
J. J. Cartier
Keyword(s):  
Amino Acids ◽  
Paper Chromatography ◽  
Free Amino Acids ◽  
Free Amino ◽  
Acyrthosiphon Pisum ◽  
Quantitative Estimation ◽  
Preliminary Investigation ◽  
Pea Aphid ◽  
Total Amino Acid ◽  
Amino Acid Contents

In field investigations on the relative resistance of varieties of peas, Pisum sativum L., to the pea aphid, Acyrthosiphon pisum (Harr.), the average number of aphids per terminal growth for 13 years (Maltais, 1937, 1950, 1951, and unpublished technical report, 1950-54) for six varieties was as follows: Perfection, 39.6; Daisy, 32.6; Lincoln, 35.6; Laurier (H-103), 9.8; Champion of England, 11.8; and Melting Sugar, 16.8. In a preliminary investigation by Auclair and Maltais (1950), 11 free amino acids were detected in pea plant extracts by paper chromatography. From a visual comparison of chromatograms, the variety Perfection appeared to contain a higher concentration of most free amino acids than the variety Laurier. This is a report on the quantitative estimation of the free and total amino acid contents of the three susceptible varieties (Perfection, Daisy, and Lincoln) and the three resistant varieties (Laurier, Champion of England, and Melting Sugar) by the method of paper chromatography.

A SIMPLE ULTRAMICROMETHOD FOR THE QUANTITATIVE ESTIMATION OF AMINO ACIDS BY PAPER PARTITION CHROMATOGRAPHY

1952 ◽  
Vol 30 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Jacques L. Auclair ◽  
Robert Dubreuil
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Galleria Mellonella ◽  
Quantitative Estimation ◽  
Larval Instar ◽  
Amino Nitrogen ◽  
New Method ◽  
Partition Chromatography

A new ultramicromethod for the quantitative estimation of amino acids by paper partition chromatography is described. The material required and the procedure adopted are detailed. As an application of this new method, a quantitative estimation of the free amino acids present in the blood of the last larval instar of Galleria mellonella (L.) is presented. The results obtained, when converted into total amino nitrogen, compare favorably with total amino nitrogen results already published in the literature.

scholarly journals AMINO ACID PROFILING IN EDIBLE SHOOTS OF SOME BAMBOO SPECIES BY USING RP-UHPLC AND THEIR THERAPEUTICAL ASPECTS

2021 ◽  
pp. 119-126
Author(s):  
KANCHAN RAWAT RANA ◽  
NIRMALA CHONGTHAM ◽  
MADHO SINGH BISHT ◽  
AJAY PATIAL ◽  
SAVITA VERMA ATTRI
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Free Amino Acids ◽  
Free Amino ◽  
High Performance ◽  
Quantitative Estimation ◽  
Amino Acid Content ◽  
Reverse Phase ◽  
Bamboo Shoots ◽  
Geographical Regions

Objective: This study was conducted to assess the amino acid profiles of edible shoots of five species of bamboos growing in various geographical regions of India. Methods: Qualitative and quantitative estimation of free amino acids was done by Reverse Phase-Ultra High Performance Liquid Chromatography (RP-UHPLC). Separation of amino acids was carried out using Zorbax eclipse plus C18 Reverse Phase (1.8 μm), 50 mm × 2.1 mm column on quaternary UHPLC system using modified gradient elution. Derivatization was done by using auto-sampler Agilent’s 1290 infinity. Data assortment and processing were accomplished by using Open Lab Chromatography Data System EZchrome edition, version A.04.06 (Agilent technologies, USA). Results: In the study, 19 free amino acids were identified, eight essential, five conditionally essential, and six non-essential amino acids (EAA). The principal amino acids were tyrosine (29.41–74.64 μg/mg d.w.) and asparagine (12.81–111.04 μg/mg d.w.). The amount of EAAs ranged from 0.46 to 21.11 μg/mg d.w. For the 1st time, taurine and ornithine are reported in bamboo shoots. The analysis exhibited significant variation (p<0.05) in free amino acids content among the five studied species. Of the five species, Phyllostachys mannii was best compared to the other species in amino acid content. Conclusion: Results showed superior amino acid composition of bamboo shoots that can be utilized to improve nutritional value of functional foods. Amino acids have various health and therapeutic properties can contribute to the basis for further expansion of these bamboos and imminent potential in applications of food and pharmaceuticals.

Betaines and free amino acids in salt stressed vitroplants and winter resting buds of Populus trichocarpa x deltoides

1991 ◽  
Vol 83 (1) ◽  
pp. 136-143 ◽  
Author(s):  
L. Bray ◽  
D. Chriqui ◽  
K. Gloux ◽  
D. Le Rudulier ◽  
M. Meyer ◽  
...  
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Populus Trichocarpa

Plasma and skeletal muscle free amino acids in type I, insulin-treated diabetic subjects

Diabetes ◽  
1985 ◽  
Vol 34 (8) ◽  
pp. 812-815 ◽  
Author(s):  
L. Borghi ◽  
R. Lugari ◽  
A. Montanari ◽  
P. Dall'Argine ◽  
G. F. Elia ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Type I
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