scholarly journals Principal Aliphatic Secondary Amines of Burley Tobacco

1970 ◽  
Vol 5 (6) ◽  
Author(s):  
L. Bush
Keyword(s):  
Nitrogen Content ◽  
Plant Tissue ◽  
Steam Distillation ◽  
Secondary Amines ◽  
Basic Medium ◽  
Stem Tissue ◽  
Drying Process ◽  
Leaf Lamina ◽  
Burley Tobacco ◽  
Amine Content

AbstractQuantity and distribution of the principal aliphatic secondary amines - dimethylamine, methylethylamine, diethylamine, and methylpropylamine - varied within plant tissue and among Nicotiana spp. In Burley tobacco the stem tissue had the highest content of these amines and the leaf midrib the lowest. Leaf lamina, roots and seed were intermediate in amine content. Among Nicotiana spp. there was considerable difference in total amine content as well as among the ratios of the amine fractions measured. Amine content of tissue was positively correlated with nitrogen content of tissue and was altered by the drying process of tissue prior to analysis. The amines were not present as free amines or salts but were detected only following steam distillation from a basic medium

scholarly journals Examination of nitrogenous compounds in Hungarian bio-musts

2005 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Kállay ◽  
D. Nyitrainé Sárdy
Keyword(s):  
Nitrogen Content ◽  
Organic Farming ◽  
Biogenic Amine ◽  
Nitrogen Compounds ◽  
Qualitative Composition ◽  
Nitrogenous Compounds ◽  
Present Essay ◽  
Amine Content ◽  
Assimilable Nitrogen ◽  
Qualitative Changes

There has not been any research done on the musts from organic grapes. As a result of the special technologies in organic farming we can expect bio-musts to have a different quantitative and qualitative composition of nitrogen compounds from that of traditional musts. In our present essay we deal with the tests of nitrogenous compounds (assimilable nitrogen content, aminoacid, biogenic amine content) in musts from Hungary's bio-wine cellars. Our results show that the change in procedures has resulted in neither quantitative nor qualitative changes in the nitrogenous compounds of bio-musts.

THREE STRAINS OF CUCUMBER MOSAIC OCCURRING ON TOBACCO IN ONTARIO AND QUEBEC

1942 ◽  
Vol 20c (6) ◽  
pp. 329-335 ◽  
Author(s):  
J. H. H. Phillips
Keyword(s):  
Mosaic Virus ◽  
Plant Tissue ◽  
Similar Type ◽  
Insect Vectors ◽  
Field Observations ◽  
Tomato Plants ◽  
Burley Tobacco ◽  
Initial Symptoms ◽  
Severe Type ◽  
Severe Leaf

Cucumber mosaic was found affecting tobacco plantings in both Ontario and Quebec. From diseased material collected in these regions three strains were isolated and designated as Strains 1, 2, and 3. Strain 1 most closely resembled typical cucumber mosaic in its symptoms on tobacco and tomato. Strain 3 produced a similar type of mottle to Strain 1, but was generally more severe and consistently produced severe leaf narrowing on tomato. Strain 2 was easily recognized by its ability to produce necrotic rings on the inoculated leaves of burley tobacco varieties and the tendency of affected plants to recover from the initial symptoms. The three strains retained their identity through a large number of serial inoculations.Investigations demonstrated that a severe type of streak was produced when tomato plants were inoculated with a combination of cucumber mosaic virus (Strain 3) and potato X virus.Unlike tobacco mosaic virus, the virus of cucumber mosaic was unable to survive over winter in plant tissue in the soil. Field observations indicated that dissemination of cucumber mosaic in tobacco plantings was effected by insect vectors.

scholarly journals Changes in Anatomic Structure of Burley Tobacco under the Influence of Irrigation and Fertilization

2005 ◽  
Vol 21 (6) ◽  
pp. 345-349 ◽  
Author(s):  
V Pelivanoska ◽  
K Filiposki ◽  
J Trajkoski
Keyword(s):  
Interactive Effect ◽  
Alluvial Soil ◽  
Leaf Lamina ◽  
Intercellular Spaces ◽  
Anatomic Structure ◽  
Burley Tobacco ◽  
Palisade And Spongy Parenchyma ◽  
Constant Rate ◽  
Phosphorus And Potassium ◽  
Filling Capacity

AbstractInvestigations were made with the new burley variety B 2/93, bred in the Tobacco Institute Prilep, on alluvial soil type in the producing region of Ohrid and Struga. Four rates of nitrogen fertilizer (55, 100, 150, and 200 kg ha-1) and a constant rate of phosphorus and potassium were applied in the investigation.Based on the results obtained, it can be stated that fertilization and irrigation have a significant influence on the anatomic structure of burley tobacco leaf. The best developed anatomic structure, with harmonically increased palisade and spongy parenchyma, was found in the variant fertilized with 150 kg ha-1 N. The cells of the parenchyma are not dense, and the spongy cells are few and irregularly distributed, forming large intercellular spaces between them. As a result of the interactive effect of irrigation and fertilization, this treatment is distinguished by a thick and soft leaf lamina with excellent adsorptive power, high filling capacity and, consequently, better quality.

Extraction of Pesticides from Environmental Samples by Steam Distillation

1984 ◽  
Vol 67 (1) ◽  
pp. 199-203
Author(s):  
Ralph G Nash
Keyword(s):  
Organic Solvent ◽  
Polyurethane Foam ◽  
Plant Tissue ◽  
Soil Type ◽  
Environmental Samples ◽  
Steam Distillation ◽  
Soxhlet Extraction ◽  
Soil Samples ◽  
Chlorinated Hydrocarbon ◽  
Steam Distillation Extraction

Abstract Steam distillation was used to extract several pesticides from samples of soil, plant tissue, and air (by using polyurethane foam filters). The major advantages of steam distillation over most other procedures are the small amounts of organic solvent required (10 mL) and the elimination of extract cleanup. In addition, the procedure is reasonably rapid and requires no special laboratory glassware. Recoveries of 22 pesticides from fortified samples were >75%, except for toxaphene and methoxychlor; recoveries were greater for the more volatile pesticides. Steam distillation extraction recoveries of chlorinated hydrocarbon insecticides from weathered (33 years) soil samples, compared with exhaustive Soxhlet extraction, were similar, except for DDT residues which depended on soil type. DDT residue extraction from a muck by distillation was poor (only 21–60% compared with Soxhlet extraction). The procedure is apparently limited to fairly nonpolar pesticides that are stable in steam or heat.

VOLATILE NITROGENOUS BASES AND ALIPHATIC SECONDARY AMINES OF BURLEY TOBACCO

1970 ◽  
Vol 50 (3) ◽  
pp. 289-294 ◽  
Author(s):  
L. P. BUSH ◽  
J. L. SIMS ◽  
W. O. ATKINSON
Keyword(s):  
Total Nitrogen ◽  
Aliphatic Amines ◽  
Secondary Amines ◽  
Nitrogen Levels ◽  
Burley Tobacco

Volatile nitrogenous bases and dimethylamine, methylethylamine, and diethylamine with N-methyl-n-propylamine were determined on two strains of burley tobacco isogenic for nornicotine. Concentrations of the nitrogenous bases and the secondary aliphatic amines, which are positively correlated with total nitrogen levels, were lower in leaves from the lower stalk positions.

Rapid Quantitative Determination of Trimethylamine using Steam Distillation

1987 ◽  
Vol 50 (9) ◽  
pp. 756-760 ◽  
Author(s):  
P. MALLE ◽  
S. H. TAO
Keyword(s):  
Trichloroacetic Acid ◽  
Steam Distillation ◽  
Colorimetric Method ◽  
Fish Muscle ◽  
Secondary Amines ◽  
Alkaline Ph ◽  
Total Volatile ◽  
Inexpensive Method ◽  
Basic Nitrogen

A simple, rapid and inexpensive method is proposed for determination of trimethylamine (TMA) in fish muscle. This procedure includes a deproteinization step with trichloroacetic acid (TCA) followed by blocking of primary and secondary amines using formaldehyde at alkaline pH and finally steam distillation of TMA. No statistically significant differences were found between this new optimized procedure and either the Conway microdiffusion method or the colorimetric method. Using the technique proposed here it is possible to assay both the total volatile basic nitrogen (TVBN) and the TMA in less than 30 min.

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