8 results about "American cockroach" patented technology

The invention discloses nitrogen-doped carbon quantum dots derived from American cockroach dregs as well as a preparation method and application of the nitrogen-doped carbon quantum dots, and belongs to the technical field of nitrogen-doped carbon quantum dots. The nitrogen-doped carbon quantum dots are prepared from the American cockroach dregs by a one-step hydrothermal method, optimal synthesis parameters are obtained through experimental optimization of synthesis conditions, and the prepared nitrogen-doped carbon quantum dots have excellent optical characteristics and stability; the invention also provides an application of the nitrogen-doped carbon quantum dot in Ag < + > detection, the nitrogen-doped carbon quantum dot has good selectivity, sensitivity and anti-interference performance on Ag < + >, a detection mechanism is an internal filtering effect and light-induced electron transfer, and the nitrogen-doped carbon quantum dot can be used as a preferred fluorescent material of an Ag < + > fluorescent sensor. The nitrogen-doped carbon quantum dots synthesized by the method not only have an Ag < + > sensing function, but also realize high-valued utilization of medicine residues, and also provide a new thought for self-doping of heteroatoms.

The invention discloses a composite solution for treating reflux esophagitis and a preparation method and application thereof, and relates to the technical field of pharmaceutical preparations, the composite solution is formed by physically mixing drug-loaded microspheres and a gastric buoyant raft matrix solution; wherein the drug-loaded microspheres are solid particles which take thiolated pectin as a carrier, are crosslinked and cured through divalent metal ions and are coated with a periplaneta americana extract; the gastric buoyant raft matrix solution comprises a hydrophilic colloid, a component capable of generating gas when encountering acid and a stabilizer. The magnesium mercapto pectin microspheres provide excellent mucous membrane adhesion, and the acting time of the medicine on the esophageal focus is prolonged; the gastric buoyant raft substrate forms a physical barrier in a gastric acid environment to inhibit regurgitation of gastric contents. Through cooperation of the two, a dual treatment mechanism of local repair and source control is realized. The preparation can remarkably prolong the in-vivo residence time and effectively promote esophageal mucosa healing, and the curative effect is better than that of a pure periplaneta americana extract preparation.

This invention discloses a composition and its preparation method for treating human papillomavirus (HPV) and cervical intraepithelial neoplasia (CIN), belonging to the field of traditional Chinese medicine technology. The formula consists of 6-15 parts of American cockroach, 5-11 parts of hawthorn, 5-11 parts of chicory, 3-9 parts of *Scutellaria baicalensis*, 8-20 parts of *Sophora flavescens*, and 6-15 parts of *Cnidium monnieri*, and also contains 0.01-1 parts by weight of toad venom. The dosage form is one or more of the following: external gel, rinse, foam, suppository, and film preparation. It has high safety and is suitable for HPV infection and CIN changes, solving the problem of poor efficacy in existing treatments.

The present application relates to the technical field of medicine, and in particular to Periplaneta americana L. extract, a preparation thereof, a preparation method and application thereof. The method for preparing Periplaneta americana L. extract includes the steps: 1) soaking fresh Periplaneta americana L. extract with ethanol; 2) reflux extracting with ethanol, and then filtering and combining the filtrates; and 3) concentrating the filtrate into extractum. The method uses environmental protection reagents such as ethanol, increases the content of bioactive substances of Periplaneta americana L. extract, saves time, human and material resources, saves energy and reduces production cost. The Periplaneta americana L. extract obtained by the present method has better anti-inflammatory activity and higher content of amino acids.

This invention belongs to the field of pharmaceutical technology, specifically relating to the preparation of liposomes based on American cockroach oil and their application as delivery carriers for American cockroach extracts. This invention is the first to introduce active oils from American cockroaches as a functional membrane component into a liposome construction system, successfully achieving partial substitution of traditional cholesterol and reducing the amount of cholesterol used in traditional liposomes. Simultaneously, the introduction of active oils may endow liposomes with additional biological functions, such as anti-inflammatory and repair-promoting effects, while also increasing the stability of the liposomes. This lays the foundation for the subsequent development of multifunctional carriers with synergistic therapeutic effects.

This invention discloses the application of methyl N-hydroxybenzoxime acid in the preparation of cockroach attractants, and also provides a composition for attracting American cockroaches, comprising an effective amount of methyl N-hydroxybenzoxime acid as an attractant, wherein the mass percentage of methyl N-hydroxybenzoxime acid is 0.01% to 10%. The composition may further include auxiliary attractants selected from 3-hydroxy-2-butanone, butyric acid, isovaleric acid, oleic acid, linoleic acid, nonanal, decanal, hexadecanoic acid, and stearic acid, or mixtures thereof. The composition also contains an attractant-acceptable carrier, such as at least one of food substrates, solvents, and solid inert materials, and can be formulated into liquid, gel, granule, or aerosol formulations for monitoring American cockroach population dynamics and / or trapping American cockroaches. This attractant component is derived from the insect itself, exhibiting good biocompatibility and environmental friendliness, providing a new technical means for the green control of American cockroaches.

This invention discloses a modified American cockroach polypeptide derivative, its preparation method, polypeptide composition, and applications. The amino acid sequence of the polypeptide derivative is shown in SEQ ID NO: 1 (PA1702); it is modified by replacing the asparagine at position 13 of the natural polypeptide PA1701 with glutamine, and can be prepared by Fmoc solid-phase polypeptide synthesis. Network pharmacology predicts that it acts on 59 core anti-inflammatory targets, enriched in pathways such as PI3K-Akt and MAPK. Molecular docking shows that PA1702 has a strong binding affinity for TNF-α and AKT1. In vitro experiments confirm that PA1702 is non-cytotoxic, can inhibit LPS-induced release of NO, TNF-α, IL-6, and IL-1β, and promote cell migration. The above-mentioned polypeptide derivative can be used as an active ingredient in cosmetics or pharmaceutical compositions; it has anti-inflammatory, skin barrier repair, and wound healing promotion effects, and can be used to prepare anti-inflammatory, skin barrier repair, and wound healing-promoting cosmetics or drugs.

This invention provides a method for preparing and applying an aqueous extract of American cockroaches, belonging to the technical field of preparation and application of aqueous extracts of natural insects. The main method involves freeze-drying and pulverizing American cockroaches under two months old, followed by water extraction, enzymatic hydrolysis with trypsin, and defatting to prepare the extract. The American cockroach extract prepared by this invention has moisturizing, anti-inflammatory, antioxidant, and anti-allergic effects, and is odorless and has a fine texture, making it suitable for use in the cosmetics field.