Oligosaccharides


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Related to Oligosaccharides: Polysaccharides

Oligosaccharides

 

carbohydrates whose molecules contain two to ten monosaccharide groups connected by glycoside bonds; accordingly, a distinction is made among disaccharides, trisaccharides, and so on. Many free oligosaccharides are found in plants, which are an important source of these substances (for example, sucrose is obtained from beets or sugarcane). Cow’s milk contains the disaccharide lactose; human milk contains, in addition, a number of oligosaccharides, including hexasaccha-rides. Oligosaccharides can be obtained by enzymatic or partial acid hydrolysis of polysaccharides. A number of natural oligosaccharides and their analogues can be obtained chemically.

References in periodicals archive ?
The study, published in the British Journal of Nutrition, was the first to reveal the diversity of oligosaccharides in goat's milk-based infant formula and their similarity to human milk.
According to the team of researchers, the study was believed to be the first to reveal the diversity of oligosaccharides in goat's milk-based infant formula and their similarity to human milk.
She has also authored two books: "The Well-Fed-Microbiomc Cookbook" and "Gut Microbiota: Interactive Effects on Nutrition and Health." Jennewcin Biotechnologie specializes in the production of rare functional monosaccharides and oligosaccharides for nutritional, pharmaceutical, cosmetic, and medical applications.
Table II.- Effect of different levels of mannan oligosaccharides on mean body weight gain (g) in broiler chicks during finisher phase.
Beans are well-known for their ability to cause flatulence because beans contain a particular sugar, called an oligosaccharide, that the human body can not break down fully.
A good amount of prebiotic oligosaccharides in breast milk reach the colon intact and specifically stimulate the growth of beneficial bacteria, specifically bifidobacteria.
'After many years of critical research and significant investment, we are delighted to see the first of our range of human milk oligosaccharides becoming commercially available, thus addressing a major gap in the nutritional composition of infant formula,' says Prof.
Apart from soybean oligosaccharides and raffinose (produced by direct extraction) and lactulose (produced by an isomerization reaction), the commercial production of oligosaccharides uses enzymatic processes [14].
Oligosaccharides derived from lactulose (OsLu) are a new generation of prebiotic oligosaccharides with enhanced prebiotic properties, as it has been shown in in vitro studies [10-12].
Oligosaccharides are complex sugars composed of a variable number of monosaccharide units and are among the most biologically diverse and important carbohydrates in biological systems.
On the other hand, the following merits of using glycosyl fluorides as glycosyl donors have emerged: a) ease of preparation under a variety of mild reaction conditions, (10) b) relatively high stability toward chromatography on silica gel, c) variety of suitable promoters available for coupling with glycosyl acceptors, (11-14) d) orthogonality of the conditions required for activation of glycosyl fluorides over other glycosyl donors, for example, thioglycosides, (15)) and e) application to "armed-disarmed concept" (16) for convergent synthesis of oligosaccharides.