What type of glycosidic bonds link the D-glucose and D-mannose units in Konjac Glucomannan (KGM)?
Answer
$\\beta$-1,4-glycosidic bonds
Konjac Glucomannan (KGM) is chemically defined as a polysaccharide whose structure involves D-glucose and D-mannose units held together specifically by $\beta$-1,4-glycosidic bonds. This specific linkage arrangement is crucial as it contributes to the fiber's high molecular weight and water-soluble nature, which dictates its functional properties, such as high viscosity and its role as a bulk-forming agent in the digestive tract. Understanding this specific chemical architecture is fundamental because it dictates how KGM interacts with water and how it resists immediate digestion, allowing it to reach the lower gastrointestinal tract where it exerts its prebiotic effects and modulates immune responses.
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