3 results about "Betulin" patented technology

Janus dry facial mask based on birch emulsion electrospinning and its preparation method belong to the field of beauty and skin care materials technology. This invention first utilizes green bio-based solvents ethyl lactate or methyl lactate to optimize the extraction of betulinol from birch bark using an ultrasound-assisted method. Then, employing emulsion electrospinning technology and a Janus bilayer structure design, an asymmetric bilayer dry facial mask is constructed: the hydrophobic layer is made of biodegradable polylactic acid electrospinned, acting as a water-locking barrier to delay moisture loss; the hydrophilic layer is made by uniformly dispersing birch bark ethyl lactate extract (oil phase) in a mixed aqueous solution of polyvinyl alcohol and chitosan through high-speed shear emulsification to form a stable O / W type emulsion, followed by electrospinning to create a nanofiber membrane encapsulating active ingredients. The Janus dry facial mask exhibits excellent moisturizing, antioxidant, and anti-inflammatory effects, and requires no preservatives for dry storage and transportation. The process is simple and suitable for industrial production.

Betulin is a natural pentacyclic triterpene, and is contained in birch tree, especially its outer bark. Betulin can be used as a hydrophobic building block for production of biobased surfactants. This invention is related to amphiphilic betulin derivatives, and their efficient production method. And resulting materials can be used as biobased surfactants.

The invention relates to novel application of betulin, in particular to application of betulin in prevention and treatment of cognitive impairment after stroke, and belongs to the field of biological pharmacy. The betulin can obviously improve cognitive impairment and neuronal impairment of post-stroke cognitive impairment, obviously improve cognitive impairment and neuropathological change of post-stroke cognitive impairment, and can play a role in improving post-stroke cognitive impairment. According to the invention, betulinol ester is creatively used for preventing and treating cognitive impairment after stroke; the betulin disclosed by the invention can be used as a medicine for preventing and treating cognitive impairment after stroke, and also can be used as an adjuvant therapy for preventing and treating cognitive impairment after stroke clinically. The traditional Chinese medicine composition has good social benefits and is worthy of clinical popularization and application.