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Détails du magazine
Format
Magazine
eISSN
2719-9509
Première publication
01 Jan 1992
Période de publication
4 fois par an
Langues
Anglais

Chercher

Volume 17 (1997): Edition 2 (September 1997)

Détails du magazine
Format
Magazine
eISSN
2719-9509
Première publication
01 Jan 1992
Période de publication
4 fois par an
Langues
Anglais

Chercher

6 Articles
Accès libre

Editorial

Publié en ligne: 06 Jan 2015
Pages: 29 - 29

Résumé

Accès libre

Alternative Forms of Storage Protection: Biological Insecticides for the Control of the Cigarette Beetle (Lasiodermaserricorne) and the Tobacco Moth (Ephestiaelutella)

Publié en ligne: 06 Jan 2015
Pages: 31 - 47

Résumé

Abstract

A large number of physical and chemical pest control methods have been developed up to now in order to ensure the effective protection of stored tobacco and tobacco products. These methods include the use of fumigants and insecticides, treatment of baled tobacco in cold chambers, monitoring the extent of infestation with pheromone traps and, the most important preventive measure of all, maintaining a strict programme to ensure hygienic storage conditions. To date, very little serious consideration has been given to the practical use of biologically based insecticides in storage pest control. Compared with synthetically-produced pesticides, however, they often have the advantage of being significantly less toxic to users and the environment, while retaining a comparable level of effectiveness on the target organism. One reason for this neglect may certainly be found in the somewhat higher price of bioinsecticides. Another hurdle is presented by the complex mixture of different biological pesticides, which makes it more difficult to obtain official approval for their use in some countries. One possible alternative is, for example, the use of Bacillus thuringiensis endotoxin preparations. The insecticidal activity of certain B.t. kurstaki or B.t. tenebrionis strains against the tobacco moth and cigarette beetle has already been sufficiently documented. Recent research has also looked at the possibility of using natural substances, such as extracts from the neem tree (Azadirachtaindica), as storage protectants. Another very promising development is based on the autodissemination technique, whereby a modified pheromone trap in combination with entomopathogenic viruses or fungi could help to achieve a dramatic increase in mortality rates in stored tobacco pests. The chemical and biological properties of these bioinsecticides will be presented here and their advantages and disadvantages as storage protectants for tobacco discussed.

Accès libre

The Removal of Stems from Cut Tobacco

Publié en ligne: 06 Jan 2015
Pages: 49 - 55

Résumé

Abstract

The presence of stems in cut tobacco is detrimental to cigarette quality, resulting in problems during production particularly on today's high-speed makers. Incomplete threshing and the use of unthreshed semi-Oriental tobaccos can increase the stem content in the cut tobacco considerably. The percentage of stems present in cut tobacco was investigated by HauniMaschinenbau AG specifically for semi-Oriental tobacco. Their findings show that not all stems present in the strips or lamina after cutting are classified as “objectionable”. However, the percentage of objectionable stems in the cut tobacco is not inconsiderable and depends on the thickness of the stems present. Reducing the objectionable stem contingent in cut tobacco is therefore a crucial concern of many cigarette manufacturers who set great store on ensuring high-quality product. HauniMaschinenbau AG offers a cut tobacco separator which has been specially designed for this purpose and also used as a cooler. A corresponding model is available in the HauniMaschinenbau AG pilot plant in Hamburg for tests using the customers’ own tobacco.

Accès libre

Conference Report - Fifty Years of Tobacco Science and Technology: Tobacco Chemists” Research Conference (TCRC), October, 1996

Publié en ligne: 06 Jan 2015
Pages: 57 - 58

Résumé

Accès libre

Conference Report - Seventy Years of Tobacco Research at the Landesanstalt Für Pflanzenbau in Forchheim (Forchheim Institut of Plant Cultivation)

Publié en ligne: 06 Jan 2015
Pages: 59 - 59

Résumé

Accès libre

Tobacco Smoke Components

Publié en ligne: 06 Jan 2015
Pages: 61 - 66

Résumé

6 Articles
Accès libre

Editorial

Publié en ligne: 06 Jan 2015
Pages: 29 - 29

Résumé

Accès libre

Alternative Forms of Storage Protection: Biological Insecticides for the Control of the Cigarette Beetle (Lasiodermaserricorne) and the Tobacco Moth (Ephestiaelutella)

Publié en ligne: 06 Jan 2015
Pages: 31 - 47

Résumé

Abstract

A large number of physical and chemical pest control methods have been developed up to now in order to ensure the effective protection of stored tobacco and tobacco products. These methods include the use of fumigants and insecticides, treatment of baled tobacco in cold chambers, monitoring the extent of infestation with pheromone traps and, the most important preventive measure of all, maintaining a strict programme to ensure hygienic storage conditions. To date, very little serious consideration has been given to the practical use of biologically based insecticides in storage pest control. Compared with synthetically-produced pesticides, however, they often have the advantage of being significantly less toxic to users and the environment, while retaining a comparable level of effectiveness on the target organism. One reason for this neglect may certainly be found in the somewhat higher price of bioinsecticides. Another hurdle is presented by the complex mixture of different biological pesticides, which makes it more difficult to obtain official approval for their use in some countries. One possible alternative is, for example, the use of Bacillus thuringiensis endotoxin preparations. The insecticidal activity of certain B.t. kurstaki or B.t. tenebrionis strains against the tobacco moth and cigarette beetle has already been sufficiently documented. Recent research has also looked at the possibility of using natural substances, such as extracts from the neem tree (Azadirachtaindica), as storage protectants. Another very promising development is based on the autodissemination technique, whereby a modified pheromone trap in combination with entomopathogenic viruses or fungi could help to achieve a dramatic increase in mortality rates in stored tobacco pests. The chemical and biological properties of these bioinsecticides will be presented here and their advantages and disadvantages as storage protectants for tobacco discussed.

Accès libre

The Removal of Stems from Cut Tobacco

Publié en ligne: 06 Jan 2015
Pages: 49 - 55

Résumé

Abstract

The presence of stems in cut tobacco is detrimental to cigarette quality, resulting in problems during production particularly on today's high-speed makers. Incomplete threshing and the use of unthreshed semi-Oriental tobaccos can increase the stem content in the cut tobacco considerably. The percentage of stems present in cut tobacco was investigated by HauniMaschinenbau AG specifically for semi-Oriental tobacco. Their findings show that not all stems present in the strips or lamina after cutting are classified as “objectionable”. However, the percentage of objectionable stems in the cut tobacco is not inconsiderable and depends on the thickness of the stems present. Reducing the objectionable stem contingent in cut tobacco is therefore a crucial concern of many cigarette manufacturers who set great store on ensuring high-quality product. HauniMaschinenbau AG offers a cut tobacco separator which has been specially designed for this purpose and also used as a cooler. A corresponding model is available in the HauniMaschinenbau AG pilot plant in Hamburg for tests using the customers’ own tobacco.

Accès libre

Conference Report - Fifty Years of Tobacco Science and Technology: Tobacco Chemists” Research Conference (TCRC), October, 1996

Publié en ligne: 06 Jan 2015
Pages: 57 - 58

Résumé

Accès libre

Conference Report - Seventy Years of Tobacco Research at the Landesanstalt Für Pflanzenbau in Forchheim (Forchheim Institut of Plant Cultivation)

Publié en ligne: 06 Jan 2015
Pages: 59 - 59

Résumé

Accès libre

Tobacco Smoke Components

Publié en ligne: 06 Jan 2015
Pages: 61 - 66

Résumé

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