7 results about "Lithocarpus" patented technology

The application discloses a process and device for extracting flavonoids from Litsea chenii plant samples, and belongs to the technical field of plant active ingredient extraction. The method comprises the following steps of raw material pretreatment, ultrasonic-microwave synergistic extraction, macroporous resin adsorption purification, and refined crystallization. A self-designed ultrasonic-microwave synergistic extraction tank is used as the core device, and a microwave generator, an ultrasonic transducer, a stirring device and a heating jacket system are integrated in the tank. The application combines the ultrasonic-microwave synergistic extraction technology with macroporous resin adsorption, improves the extraction rate of flavonoids, shortens the extraction time, and has high purity of the extracted flavonoids, with a yield of 3.5-4.2% and a purity of more than 95%. The process is simple, efficient and environmentally friendly, is suitable for industrial production, and provides technical support for the development and utilization of Litsea chenii resources.

This invention relates to the field of cosmetics, specifically to a skincare composition for combating environmental pollution. The composition comprises rice germ extract and a mixture of rice extracts, a mixture of *Chlorella vulgaris* extract and *Lithocarpus stolonifera* extract, *Microcystis globosum* extract, and a mixture of olive fruit water and olive fruit extract as main active ingredients. Through a rational ratio of these components, the resulting composition can isolate air pollutants, inhibit their adhesion to sebum, prevent them from penetrating the skin, and effectively reduce sebum secretion by decreasing the size and number of facial pores. It also increases the skin's tolerance to irritants, enhances antioxidant capacity, and reduces the likelihood of inflammation caused by sebum peroxidation. Furthermore, it improves cell viability to resist air pollutants.

The invention belongs to the technical field of food processing and health-care tea preparation, and particularly discloses lithocarpus litseifolius and folium cortex eucommiae composite health-care tea and a preparation method thereof. The product is prepared by compounding fresh Lithocarpus litseifolius leaves and fresh Eucommia ulmoides leaves as raw materials according to a weight ratio of (6-8): (2-4). The preparation method comprises the following steps: synergic withering, steam-microwave combined fixation, pre-dehydration and spreading for cooling, anti-sticking synergic rolling, optional coupling fermentation, segmented drying, screening, sterilization and packaging. Wherein the enzyme activity can be efficiently passivated, and color fixation and fragrance preservation can be realized through steam-microwave combined enzyme deactivation; during rolling, a food-grade physical separant is added, and stage pressure control of air compression, light compression, medium compression and air compression is combined, so that the problem of adhesion of the leaves is effectively solved, and flavor fusion and strip tightening are promoted. According to the method, the retention rate of chlorogenic acid, flavone and other active ingredients in the product is remarkably increased, the taste and appearance integrity of tea soup are improved, and the method is suitable for large-scale production and has a good market application prospect.

This invention belongs to the field of biocontrol microbial technology, specifically relating to a strain of Chaetomium globosum (… Chaetomium globosum )5141-4 、 Inoculants and their applications. This invention isolates an endophytic fungus from *Lithocarpus* lichens and names it *Chaetoceros globosa*. Chaetomium globosum 5141-4. Verification has shown that the above strains can effectively inhibit the growth of Fusarium oxysporum or anthrax, and also exhibit good inhibitory effects against six pathogens, including Pseudomonas aeruginosa and Enterococcus faecalis. They hold promise for use in the preparation of biocontrol products or further screening of antibacterial compounds.

The invention relates to the technical field of papermaking, and particularly discloses low-noxious-substance anti-rust base paper and a preparation process thereof.The preparation process of the low-noxious-substance anti-rust base paper comprises the following steps that 1, waste kraft paper, water, a deinking agent and sodium hydroxide are mixed and repulped through repulping equipment, and coarse pulp is obtained; step 2), screening and deslagging the coarse pulp, and pulping through pulping equipment to obtain refined pulp; (3) adding a cationic antirust agent emulsion into the refined pulp, uniformly stirring, feeding into papermaking equipment, forming on a net, squeezing and dehydrating, and drying to obtain coarse paper; 4, the surface of the coarse paper is coated with a modification liquid, drying is conducted, and the low-noxious-substance anti-rust base paper is obtained.The modification liquid is formed by compounding deionized water, cationic starch, curdlan, folium artemisiae argyi extract, lithocarpus litseifolius extract and Chinese tallow seed extract.The method has the advantage that the quality stability of the anti-rust paper is improved.

The application discloses a method for promoting the growth of leaf of Lithocarpus polystachyus, synthesis of dihydrochalcone and reduction of heavy metal content. The method uses selenium-rich yeast as a leaf surface treatment agent of the Lithocarpus polystachyus, and can simultaneously promote the growth of leaf, synthesis of dihydrochalcone and reduction of the content of heavy metals arsenic and lead in the leaf. The content of trilobatin in the young leaf and mature leaf can be increased by 190% and 83% respectively, the proportion of the number of new young leaf plants can be increased to 52%, and the content of lead and arsenic can be reduced by 92.2% and 347.7% respectively. The method has remarkable quality improvement and yield increasing effects, is simple and easy to implement, has short treatment time, is environment-friendly and pollution-free, has high economic benefits, is suitable for functional component improvement and heavy metal pollution prevention and control of the Lithocarpus polystachyus, and has wide application prospects.

The invention discloses a biosynthetic gene promoter litC of a biosynthetic gene of a deep sea fungus P. lithocarpus FS508 and an application of the biosynthetic gene promoter litC of the biosynthetic gene of the biosynthetic gene of the deep sea fungus P. lithocarpus FS508. The nucleotide sequence of the promoter is as shown in SEQ ID NO. 1. According to the invention, an upstream promoter sequence of a litC gene is obtained through amplification from an FS508 genome, and a core region of the promoter is predicted, so that a core sequence Plitc of the deep-sea fungus polyketide synthase gene litC promoter is obtained. The litC promoter disclosed by the invention can efficiently start expression of a hygromycin resistance gene hph and a G418 resistance gene NeoR in yeast, the efficiency of the litC promoter is better than that of a constitutive promoter TEF1, and the litC promoter shows broad-spectrum resistance gene starting activity and substitution potential. The result provides a new screening tool for a yeast expression system, and lays a foundation for improving the yield of the istocarpins and developing derivative compounds through a synthetic biological strategy.