Why stachyose can be used as prebiotic？？how is the chemical structure of stachyose affect bacteria？？ a-D-galactoseOH6CH₂OH5OH32OHa-D-galactose6CH₂OH 5OH3a (1→ 6)linkage2OHa-D-glucoseH₂C 6STACHYOSEOHB-D-fructoseOH3a(1→ 6)linkage2OHOHCH₂OH OOH312CH₂OH1(1→2)linkage

Chemically carbohydrates are polyhydroxy aldehydes or ketones. They have the general formula : (CH2O)n. Depending on their size, they can be monosaccharides (single polyhydroxy aldehyde or ketone), disaccharides (two monosaccharides linked via glycosidic bond), oligosaccharides(a short chain of monosaccharides linked via glycosidic bond) or polysaccharides( monosaccharide polymers with 20 to 1000 or more units).Prebiotics are biomolecules that cannot be digested by humans but can be digested by gut bacteria. This selectively promotes the growth of some microorganisms in the gut which are beneficial to the human body. Stachyose is a tetrasaccharide that has two galactose residues linked via a α(1→6) glycosidic bond to the sucrose moiety. Humans lack the α-1,6-galactosidase enzyme that is necessary for hydrolysing this bond, but some gut bacteria can digest this oligosaccharide. So consumption of stachyose selectively promotes the growth of these beneficial microorganisms in the human guts and is therefore considered a prebiotic. Stachyose is prebiotic because it promotes the selective growth of microorganisms in human guts. The presence of α(1→6) glycosidic bond in the chemical structure becomes the ground of selection since only some bacteria can produce the enzyme necessary for the digestion of this bond. This is the affect stachyose has on bacteria.

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Science

Biochemistry

Why stachyose can be used as prebiotic？？how is the chemical structure of stachyose affect bacteria？

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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