[Latin Name]Huperzia serratum

[Source] Huperziceae whole herb from China

[Appearance]Brown to white

[Ingredient]Huperzine A

[Specification]Huperzine A 1% – 5%, HPLC

[Solubility] Soluble in chloroform, methanol, ethanol, slightly soluble in water

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Pesticide residue] EC396-2005, USP 34, EP 8.0, FDA

[Storage] Store in cool & dry area, keep away from the direct light and heat.

[Shelf life] 24 Months

[Package] Packed in paper-drums and two plastic-bags inside.

[What is Huperzine A]

Huperzia is a type of moss that grows in China. It is related to club mosses (the Lycopodiaceae family) and is known to some botanists as Lycopodium serratum . The whole prepared moss was used traditionally. Modern herbal preparations use only the isolated alkaloid known as huperzine A. Huperzine A is an alkaloid found in huperzia that has been reported to prevent the breakdown of acetylcholine, an important substance needed by the nervous system to transmit information from cell to cell. Animal research has suggested that huperzine A’s ability to preserve acetylcholine may be greater than that of some prescription drugs. Loss of acetylcholine function is a primary feature of several disorders of brain function, including Alzheimer’s disease . Huperzine A may also have a protective effect on brain tissue, further increasing its theoretical potential for helping reduce symptoms of some brain disorders.

[Function] Used in alternative medicine, huperzine A has been found to act as a cholinesterase inhibitor, a type of medicine used to prevent the breakdown of acetylcholine (a chemical essential to learning and memory).

Not only used as a treatment for Alzheimer’s disease, huperzine A is also said to enhance learning and memory and to protect against age-related cognitive decline.

In addition, huperzine A is sometimes used to boost energy, increase alertness, and aid in the treatment of myasthenia gravis (an autoimmune disorder that affects the muscles).

Moof’s Medical Biochemistry Video Course: https://moof-university.thinkific.com/courses/medical-biochemistry-for-usmle-step-1-exam

For Related Practice Problems with Worked Video Solutions on Carbohydrates, visit courses.moofuniversity.com.

In this video, I depict and describe some key disaccharides and polysaccharides that any and every biochemistry student should be familiar with.

Maltose is a disaccharide with two glucose molecules connected by an alpha-1,4-glycosidic bond. Maltose is a reducing sugar because it has a free anomeric OH group.
Lactose is a disaccharide with a galactose and a glucose connected by a beta-1,4-glycosidic bond. Lactose is a reducing sugar because it has a free anomeric OH group.
Sucrose is a disaccharide with a glucose and a fructose connected by an alpha,beta-1,2-glycosidic bond. Sucrose is not a reducing sugar because it does not have a free anomeric OH group.

Cellulose is a polysaccharide with a bunch of glucose molecules connected by beta-1,4-linkages.
Starch and glycogen are both polysaccharides with a bunch of glucose molecules connected by alpha-1,4-linkages. Glycogen is more highly branched.

Humans have the enzyme to digest alpha-1,4-linkages, not beta-1,4-linkages. That’s why we can digest starch and glycogen, but not cellulose.

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