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Concept explainers
Interpretation:
The acetal or hemiacetal grouping of trehalose, reducing or nonreducing property of trehalose and the link between two monosaccharides have to be determined.
Concept introduction:
Reducing sugar: Sugars that contain
Anomeric position is carried by a
Anomeric position is carried by an alkoxy group for acetal sugars.
Hemiacetal sugars are in equilibrium with their open chain form.
Acetal sugars are not in equilibrium with their open chain form.
The linkage between monosaccharides in a disaccharide is referred to as a glycosidic linkage. Two
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Chapter 20 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
- What structural relationship is indicated by term D-sugar? Why are +glucose and -fructose classified as D-sugarsarrow_forwardWhat is the pyranose/furanose ring structure of this sugar?arrow_forwardCan you please identify the name of each of the structures of sugar and identify as reducing or nonreducing sugar of a,b,c and d? The picture is posted. One of the structures may be not identified from the usual structures of disaccharides.arrow_forward
- Given the monosaccharide: what is its main functional group (aldose or ketose?)Is it triose, hexose, pentose or tetrose?is it D or L configuration?arrow_forwardWhat is the complete name of the following sugar? но он носн он Write out the words alpha and beta. This question is case-sensitive. Capitalize only the configuration designation, D or L, example: beta-D-glucopyranose.arrow_forwardGentiobiose (D-Glc(β1→6)D-Glc) is a disaccharide found in some plantglycosides. Draw the structure of gentiobiose based on its abbreviated name. Is it a reducing sugar? Does it undergo mutarotation?arrow_forward
- Raffinose, the most abundant trisaccharide found in nature, occurs in whole grains and numerous vegetables (e.g., asparagus, cabbage, and beans). Hydrolysis of raffinose yields galactose and sucrose. Provide the systematic name for this trisaccharide. Is raffinose a reducing or nonreducing sugar? Is raffinose capable of mutarotation?arrow_forwardComplete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D- Xylosearrow_forwardWhich form of aspartic acid in Problem 18.54 is the zwitterion? What is the pI for the zwitterion?arrow_forward
- 1) Please list all glycosidic linkages between each monosaccharide units. For example, α(1→4)2) Please discuss whether these oligo/polysaccharides would be reducing or non-reducing sugar. Remember to state your reasoning in complete sentence.arrow_forwardGive one specific sample structure (Fischer Projection or Haworth) of the following carbohydrate derivatives: - Amino-sugararrow_forwardWhat sugar is produced by the epimerization of galactose?arrow_forward
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