Алдоза: Разлика между версии

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'''Алдоза''' е [[монозахарид]] имащ една [[алдехид]]на група в [[молекула]]та си и оща [[химична формула]] C<sub>n</sub>(H<sub>2</sub>O)<sub>n</sub>. [[Глицералдехид]]ът е най-простия [[carbon]] [[atom]]s, [[glycolaldehyde]] is the simplest of all aldoses.<ref>[Berg, J.M., 2006. Carbohydrates. 6th ed., Biochemistry. New York: W.H. Freeman and Company]</ref>
'''Алдоза''' е [[монозахарид]] имащ една [[алдехид]]на група в [[молекула]]та си и оща [[химична формула]] C<sub>n</sub>(H<sub>2</sub>O)<sub>n</sub>. [[Глицералдехид]]ът е най-простия [[carbon]] [[atom]]s, [[glycolaldehyde]] is the simplest of all aldoses.<ref>[Berg, J.M., 2006. Carbohydrates. 6th ed., Biochemistry. New York: W.H. Freeman and Company]</ref>


Aldoses have at least one asymmetric carbon centre, meaning they exhibit [[stereoisomerism]]. This means an aldose can exist in either a D form or L form of a [[Fischer projection]]. Biological systems tend to recognise D-aldoses more than L-aldoses.
Aldoses have at least one asymmetric carbon centre, meaning they exhibit [[stereoisomerism]]. This means an aldose can exist in either a D form or L form of a [[Fischer projection]]. Biological systems tend to recognise D-aldoses more than L-aldoses.

Версия от 20:23, 19 май 2011

Алдоза е монозахарид имащ една алдехидна група в молекулата си и оща химична формула Cn(H2O)n. Глицералдехидът е най-простия carbon atoms, glycolaldehyde is the simplest of all aldoses.[1]

Aldoses have at least one asymmetric carbon centre, meaning they exhibit stereoisomerism. This means an aldose can exist in either a D form or L form of a Fischer projection. Biological systems tend to recognise D-aldoses more than L-aldoses.

Aldoses isomerize to ketoses in the Lobry-de Bruyn-van Ekenstein transformation. Aldose differs from ketose in that it has a carbonyl group at the end of the carbon chain whereas the carbonyl group of a ketose is in the middle; this fact allows them to be chemically differentiated through Seliwanoff's test.

List of aldoses

References

  1. [Berg, J.M., 2006. Carbohydrates. 6th ed., Biochemistry. New York: W.H. Freeman and Company]

See also

Шаблон:Carbohydrates


Шаблон:Biochem-stub