L-Arabinose is a low-calorie sweetener that has been approved as a health food additive by the US Food and Drug Administration and the Japanese Ministry of Health and Welfare. Its most notable physiological effect is its ability to selectively affect sucrase, an enzyme that digests sucrose in the small intestine. This inhibits the absorption of sucrose, making L-Arabinose a popular choice for those looking to reduce their sugar intake.

One of the primary applications of L-Arabinose is in baked goods. Its stable molecular structure means it can withstand high temperatures without decomposing, making it an ideal ingredient for baking. Additionally, its molecular structure contains aldehyde groups, making it a reducing monosaccharide. When mixed with sucrose in baked goods, it undergoes the Maillard browning reaction with amino acids, proteins, and other substances in the dough. This results in a unique flavor and brighter color in the finished product.

L-Arabinose is also commonly used in beverages. As the market for high-calorie beverages declines, low-sugar and sugar-free options are becoming increasingly popular. The addition of L-Arabinose to various beverages meets this growing demand.

In addition to its use in food and drink, L-Arabinose has applications in biomedicine. It can be used to synthesize nucleoside analogs and other disease-resistant substances. For example, using L-Arabinose as a raw material, 2-deoxy-2-fluoro-5-methyl-β-L-arabinofuranosyluracil (L-FMAU) can be synthesized. L-FMAU is an active agent against hepatitis B virus (HBV) and Epstein-Barr virus.

L-Arabinose also has applications in other fields. It can be used as a raw material to prepare arabitol, a rare sugar alcohol, through hydrogenation synthesis reaction. Arabitol can be used in microbial fermentation and genetic improvement experiments. L-Arabinose can also be used to synthesize important pharmaceutical intermediates with anti-AIDS and anti-virus properties such as L-ribose. Additionally, it can be used to prepare arabinose-responsive essence that produces a soft and rich aroma flavor.

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