Unfractionated heparin as a pharmaceutical is heparin that has not been fractionated to sequester the fraction of molecules with low molecular weight. In contrast, low-molecular-weight heparin has undergone fractionation for the purpose of making its pharmacodynamics more predictable.nfractionated heparin as a pharmaceutical is heparin that has not been fractionated to sequester the fraction of molecules with low molecular weight. In contrast, low-molecular-weight heparin has undergone fractionation for the purpose of making its pharmacodynamics more predictable.
Best Answer: Yogurt is sour because it contains lactic acid which also gives it its distinctive taste. Yogurt is only sweet if sugar or artificial sweeteners are added.
Yogurt's tangy flavor occurs as a result of its acidity. A food's acidity is measured using the pH scale. Foods that have a pH of between 0 and 6.9 on the pH scale are acidic -- with lower pH values indicating higher acidity -- while those that have a pH of between 7.1 and 14 are alkaline.