galactoside

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galactose

 [gah-lak´tōs]
a monosaccharide sugar of the aldose group, derived from lactose. d-galactose is found in lactose, in cerebrosides of the brain, in the sugar beet, and in many gums and seaweeds; l-galactose is found in flaxseed mucilage.
galactose tolerance test a laboratory test done to determine the liver's ability to convert the sugar galactose into glycogen. Two methods may be used. The oral method requires about 5 hours to complete, and the intravenous method, which is more accurate, requires about 2 hours. With the oral method, elimination of more than 3 g of galactose in the urine during a 5-hour period indicates liver damage. With the intravenous method, all galactose should have been eliminated from the blood 45 minutes after its injection.

ga·lac·to·side

(gă-lak'tō-sīd),
A compound in which the H of the OH group on carbon-1 of galactose is replaced by an organic moiety.

galactoside

(gə-lăk′tə-sīd′)
n.
Any of a group of glycosides that yield galactose on hydrolysis.

ga·lac·to·side

(gă-lak'tō-sīd)
A compound in which the H of the OH group on carbon-1 of galactose is replaced by an organic radical.
References in periodicals archive ?
The richest source of [alpha] - galactosides are the seeds of legumes, among which the lupine seeds contain up to 7-15% (Villaluenga et al., 2005).
The applied galactosides originate from extracts of the residue after the debitering process of bitter lupin seeds galactosides (Gulewicz et al., 2000).
Potentially increased intestinal absorption of nutrients as a result of single in ovo injection of [alpha] - galactosides can be the basis for achieving better production results and finally positive economic effects.
Effects of a single injection of [alpha] - galactosides on the 12th day of incubation are shown in Table 2.
It is difficult to compare the result from this study with literature data, because research on the effects of in ovo injection of [alpha] - galactosides has not been made so far.
To some extent, this fact may explain the higher rate of resorption of the yolk sac observed by in previous studies in experimental broiler chickens group injected at the 12th day of embryogenesis with [alpha] - galactosides (Brudnicki et al., 2015).
On the basis of this paper it can be assumed that the described mechanism implies the morphological characteristics of the small intestine in broiler chickens injected in ovo with [alpha] - galactosides observed on the day of hatching in the present study.
The growth rate of the villi in the duodenum could be associated with the effect of a good start, which was potentially provided by in ovo injection of [alpha] - galactosides. It is confirmed by the height of the villi in the duodenum in the experimental group.
This is probably the effect of in ovo injection of a single dose of [alpha] - galactosides. To keep the beneficial effects of the added substance on the microstructure of the small intestine, and thus the functionality of the intestine, it may be necessary to repeat the application of a prebiotic supplement or modificate diet.
Conclusion: In our study we demonstrated that a single in ovo injection of [alpha] - galactosides can assist the process of early development of morphological and functional gastrointestinal tract, thereby potentially minimize the negative effects of the lack of or delayed access to feed.
Although, the mechanism whereby the injection in ovo of galactosides accelerates the resorption of the content of the yolk sac and the related implications require further research.
Assessment of the Effect of a- galactosides injected during embryogenesis on selected chicken traits.