Molecules, Free Full-Text

Por um escritor misterioso

Descrição

Carbohydrates are important compounds in natural products where they primarily serve as a source of energy, but they have important secondary roles as precursors of aroma or bioactive compounds. They are present in fresh and dried (cured) tobacco leaves as well. The sugar content of tobacco depends on the tobacco variety, harvesting, and primarily on the curing conditions (temperature, time and moisture). If the process of curing employs high temperatures (flue-curing and sun-curing), final sugar content is high. In contrast, when air curing has a lower temperature, at the end of the process, sugar level is low. Beside simple sugars, other carbohydrates reported in tobacco are oligosaccharides, cellulose, starch, and pectin. Degradation of polysaccharides results in a higher yield of simple sugars, but at the same time reduces sugars oxidization and transfer into carbon dioxide and water. Loss of sugar producers will compensate with added sugars, to cover undesirable aroma properties and achieve a better, pleasant taste during smoking. However, tobacco carbohydrates can be precursors for many harmful compounds, including formaldehyde and 5-hydroxymethylfurfural. Keeping in mind that added sugars in tobacco production are unavoidable, it is important to understand all changes in carbohydrates from harvesting to consuming in order to achieve better product properties and avoid the formation of harmful compounds. This review summarizes current knowledge about tobacco carbohydrates, including changes during processing with special focus on carbohydrates as precursors of harmful compounds during smoking.
Molecules, Free Full-Text
Synthesis of Azonia Aromatic Heterocycles Bearing 6–6–6–5–6
Molecules, Free Full-Text
NCERT Solutions Class 9 Science Chapter 3 Atoms And Molecules
Molecules, Free Full-Text
Hydroboration Reduction of CO2 Catalyzed by a Doubly Reduced
Molecules, Free Full-Text
Molecule Learning Stations: Intro to Modeling Molecules with QR
Molecules, Free Full-Text
Tuneup 2.7 0.1 Get File - Colaboratory
Molecules, Free Full-Text
Molecules: The Elements And The Architecture Of Everything
Molecules, Free Full-Text
Atoms and molecules : Weissbluth, Mitchel : Free Download, Borrow
Molecules, Free Full-Text
European Pharmacopoeia 6.0 Free Download - Colaboratory
Molecules, Free Full-Text
100,000 Molecules Vector Images
Molecules, Free Full-Text
Molecules Stock Photos, Royalty Free Molecules Images
Molecules, Free Full-Text
Molecules: The Elements And The Architecture Of Everything
Molecules, Free Full-Text
Special 26 Songs Free Zip File - Colaboratory
Molecules, Free Full-Text
Molecules, Free Full-Text
de por adulto (o preço varia de acordo com o tamanho do grupo)