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Xylitol has about the same sweetness as sucrose, [15] but is sweeter than similar compounds like sorbitol and mannitol. [10] Xylitol is stable enough to be used in baking, [18] but because xylitol and other polyols are more heat-stable, they do not caramelise as sugars do. When used in foods, they lower the freezing point of the mixture. [19]
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Sugar alcohols can be, and often are, produced from renewable resources.Particular feedstocks are starch, cellulose and hemicellulose; the main conversion technologies use H 2 as the reagent: hydrogenolysis, i.e. the cleavage of C−O single bonds, converting polymers to smaller molecules, and hydrogenation of C=O double bonds, converting sugars to sugar alcohols.
Iodine levels are frequently too low in pregnant women, and iodine is necessary for normal thyroid function and mental development of the fetus, even cretinism. Pregnant women should take prenatal vitamins containing iodine. [10] Vitamin D levels vary with exposure to sunlight. While it was assumed that supplementation was necessary only in ...
Tubes filled with amniotic fluid for amniocentesis. The amniotic fluid is the protective liquid contained by the amniotic sac of a gravid amniote.This fluid serves as a cushion for the growing fetus, but also serves to facilitate the exchange of nutrients, water, and biochemical products between mother and fetus.
Metformin treatment in pregnancy is not safe. [91] In 2007, the Royal College of Obstetricians and Gynaecologists also recommended against the use of the drug to prevent miscarriage. [ 90 ] Thrombophilias or defects in coagulation and bleeding were once thought to be a risk of miscarriage but have been subsequently questioned. [ 92 ]
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