Optimal conditions for long-term storage of biogenic amines for subsequent analysis by column chromatography with electrochemical detection

1990 ◽  
Vol 518 ◽  
pp. 258-263 ◽  
Author(s):  
D.L. Palazzolo ◽  
S.K. Quadri
Keyword(s):  
Biogenic Amines ◽  
Electrochemical Detection ◽  
Column Chromatography ◽  
Optimal Conditions ◽  
Long Term Storage ◽  
Term Storage

NANOEMULSIONS BASED ON LIPOIC ACID DERIVATIVES WITH VARIOUS ALCOHOLS: PRODUCTION AND INFLUENCE ON FUNCTIONAL ACTIVITY OF PLATELETS

2020 ◽  
pp. 461-464
Author(s):  
A. Sinebryukhova ◽  
A. Shipelova ◽  
E. Darnotuk ◽  
A. Chekanov ◽  
O. Baranova ◽  
...  
Keyword(s):  
Particle Size ◽  
Arachidonic Acid ◽  
Lipoic Acid ◽  
Encapsulation Efficiency ◽  
Room Temperature ◽  
Optimal Conditions ◽  
Pluronic F68 ◽  
Long Term Storage ◽  
Term Storage

The optimal conditions were selected for obtaining homogeneous nanoemulsions (NE) of lipoic acid conjugates (LA-conjugates) based on Pluronic F68 (1,8%) with a particle size not exceeding 400 nm, characterized by 97±2% encapsulation efficiency of substances in nanoparticles (NP). A heterogeneous NE (polydispersity index, PDI>0,3) with the derivative of LA and myo-inositol based on phosphatidylcholine (PC, C = 3 mg/ml) was also obtained consisting of 2 particle fractions: 20–70 nm (27%) and 122–212 nm (73%). The obtained NEs with LA-conjugates based on Pluronic F68 and PC were stable during long-term storage (more than 12 months) at room temperature. The effect of the obtained NEs of LA-conjugates on platelet aggregation (Pt) caused by arachidonic acid (AA) was determined, and a mechanism of their action was proposed.

scholarly journals VERIFICATION OF VIABILITY AND PHENOTYPICAL PROPERTIES OF STRAINS INFECTIOUS AGALACTIC OF SHEEP AND GOATS

2021 ◽  
Vol 245 (1) ◽  
pp. 9-13
Author(s):  
E.A. Artemeva ◽  
◽  
L.A. Melnikova ◽  
A.P. Rodionov ◽  
◽  
...  
Keyword(s):  
Biological Properties ◽  
Industrial Complex ◽  
Optimal Conditions ◽  
Sheep And Goats ◽  
Long Term Storage ◽  
Passport Data ◽  
Prophylactic Vaccines ◽  
And Control ◽  
Term Storage

The article provides data about the first cases of detection and spread of infectious agalactia in sheep and goats, both in Russia and abroad. It was revealed that these are mainly regions with traditional sheep breeding, which include regions of Europe, Asia, Africa, as well as countries locat-ed along the shores of the Mediterranean Sea. The success of preventing and eradicating this disease depends on the availability of prophylactic vaccines and diagnostic drugs. The basis for their manu-facture is the production and control strains of the pathogen, which are obtained by biological en-terprises of the agro-industrial complex from the state collections of microorganisms. In the collec-tions, strains are studied at the frequency indicated in the passport, and optimal conditions are cre-ated to prevent microorganisms from losing their viability and their biological properties during long-term storage. The present work shows results of studies of strains A-319 and 8899 of the caus-ative agent of infectious agalactia in sheep and goats stored for 20 years, in a lyophilized form. The data obtained for determining the viability and studying the biological properties of the strains showed their compliance with the passport data.

Determination of biogenic amines in mini-salami during long-term storage

1997 ◽  
Vol 58 (4) ◽  
pp. 385-390 ◽  
Author(s):  
E. Treviño ◽  
D. Beil ◽  
H. Steinhart
Keyword(s):  
Biogenic Amines ◽  
Long Term Storage ◽  
Term Storage

scholarly journals Liquid chromatographic determination of biogenic amines in a meat product during fermentation and long-term storage

2011 ◽  
Vol 21 (No. 5) ◽  
pp. 167-175 ◽  
Author(s):  
D. Smělá ◽  
P. Pechová ◽  
T. Komprda ◽  
B. Klejdus ◽  
V. Kubáň
Keyword(s):  
Biogenic Amines ◽  
Meat Product ◽  
Meat Products ◽  
Chromatographic Determination ◽  
Secondary Amines ◽  
Long Term Storage ◽  
Liquid Chromatographic ◽  
Term Storage

Liquid chromatographic procedures employing two derivatisation reagents, dansylchloride and o-phthaldialdehyde (OPA), were compared and applied for the determination of biogenic amines in meat products during fermentation and long-term storage. Both methods give similar results in terms of the detection limits, repeatability, recovery, and accuracy. Secondary amines (spermine and spermidine) do not react with o-phthaldialdehyde thus only their LC determination after derivatisation with dansylchloride is possible. Their contents during fermentation and/or long-term storage are nearly constant or slightly decrease, thus their determination in both cases is not necessary. LC procedure employing OPA derivatisation is faster, much simpler in terms of the pre-treatment of samples, and it can be fully automated using an intelligent auto sampler.  

Modelling of Moisture Movement in Wood during Outdoor Storage

2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius
Keyword(s):  
Experimental Data ◽  
Finite Difference ◽  
Climatic Conditions ◽  
Two Dimensional ◽  
Moisture Movement ◽  
Finite Difference Technique ◽  
Long Term Storage ◽  
Space Formulation ◽  
Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

Trehalose: a cryoprotectant that enhances recovery and preserves function of human pancreatic islets after long-term storage

Diabetes ◽  
1997 ◽  
Vol 46 (3) ◽  
pp. 519-523 ◽  
Author(s):  
G. M. Beattie ◽  
J. H. Crowe ◽  
A. D. Lopez ◽  
V. Cirulli ◽  
C. Ricordi ◽  
...  
Keyword(s):  
Pancreatic Islets ◽  
Human Pancreatic Islets ◽  
Long Term Storage ◽  
Term Storage
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