Abstract: A compound having the formula (I): (I) is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method of preparing a hydroxytyrosol sturgeon skin gelatin film with antioxidant activity and Salmonella detection ability includes: (1) mixing a neutral red indicator solution and distilled water at room temperature to obtain a mixture solution, and adding 1 mol/L NaHCO3 solution to the mixture solution until discoloration to obtain an alkaline solution; (2) adding an amount of the alkaline solution obtained in step (1) to a mixture of Sturgeon skin gelatin and distilled water to obtain an alkaline gelatin solution; (3) adding hydroxytyrol and glycerin and propylene glycol to the alkaline gelatin solution to obtain a hydroxytyrol gelatin solution, and heating the hydroxytyrol gelatin solution at 40-70° C.; (4) ultrasonicating the hydroxytyrol gelatin solution from step (3), placing the hydroxytyrol gelatin solution evenly on a clean plexiglass plate, drying the hydroxytyrol gelatin solution on an ultra-clean worktable to obtain the hydroxytyrosol sturgeon skin gelatin film.

Abstract: A compound having the formula (I): is disclosed. Methods of preparing the compound of formula (I) are also disclosed. The compound of formula (I) can be prepared by reacting a compound of formula (II) with a compound of formula (III) in an organic solvent with EDC (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide). The compound of formula (I) can also be prepared by reacting the compound of formula (II) with the compound of formula (III) in 1-ethyl-3-methylimidazolium hexafluorophosphate as a solvent with silicomolybdic acid as a catalyst.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method for preparing a collagen from a chromium-containing tanned leather waste is disclosed. The method includes acid dechromation, obtaining a collagen aggregate, and converting the collagen aggregate to the collagen. The method also includes a reaction in a supercritical carbon dioxide reactor.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method of preparing a Lilac Ginkgo Brick Tea includes the following steps: (1) mixing and drying fresh Lilac leaves and Ginkgo leaves to obtain a Lilac Ginkgo Tea; (2) fermenting the Lilac Ginkgo Tea to obtain a Fermented Lilac Ginkgo Tea; (3) mixing the Fermented Lilac Ginkgo Tea with a black tea to obtain a Fermented Lilac Ginkgo Tea Mixture; and (4) processing the Fermented Lilac Ginkgo Tea Mixture to obtain the Lilac Ginkgo Brick Tea.

Abstract: A method of preparing an aesculin sturgeon skin gelatin with antioxidant activity and Enterococcus faecalis detection ability includes: 1) mixing a sturgeon skin gelatin and distilled water in a ratio of 1:15-1:25 (w/v) at 50-70° C. and filtering to obtain a sturgeon skin gelatin solution; 2) adding aesculin and a glycerin solution to the sturgeon skin gelatin solution, stirring the resulted sturgeon skin gelatin solution at 30-50° C. for 30 minutes, and filtering; and 3) removing air bubbles from the sturgeon skin gelatin solution of step 2) under reduced pressure, placing the sturgeon skin gelatin solution on an acrylic glass, and drying the sturgeon skin gelatin solution at in a vented oven 25° C. and 45-55% relative humidity for 24 hours to obtain the aesculin sturgeon skin gelatin film.

Abstract: A method for preparing a hierarchical porous ZrO2 includes the following steps: S1, dissolving a triblock copolymer in an organic solvent to obtain a solution A, dissolving a tannin extract in distilled water to obtain a solution B, mixing the solution A and the solution B and stirring to obtain a mixed solution; S2, adding a zirconium salt to the mixed solution obtained in step S1 and stirring; S3, heating the mixed solution obtained in step S2 in an oven to obtain ZrO2, promoting the conversion of the crystal form of ZrO2; S4, calcining ZrO2 at a high temperature to obtain the hierarchical porous ZrO2.

Abstract: A device for high pressure spray and counter-current precipitation extraction of herbal medicine is disclosed. A method for extracting herbal medicine using the device is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method for preparing a high fluffiness down by multiple treatments with metal salts includes: degreasing a down sample with a degreasing agent; washing the down sample with water; oxidizing the down sample with an oxidizing agent; washing the down sample with water; conducting a first crosslinking treatment with basic zirconium sulfate; washing the down sample with water; conducting a second crosslinking treatment with basic aluminum sulfate; washing the down sample with water; and drying the down sample to obtain the high fluffiness down.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A gossypol isatin Schiff base compound with antitumor activities represented by formula I: R1 and R2 are independently hydrogen, alkyl, cycloalkyl, alkoxy, nitro, halogen, unsubstituted or substituted phenyl, or unsubstituted or substituted benzyl. A method of preparing the compound of formula I is also disclosed.

Abstract: A compound of chemical formula I: or chemical formula II: or a pharmaceutical acceptable salt thereof is disclosed. R1, R2, R3, and R4 are independently H, halogen, nitro, hydroxyl, cyano, benzyloxy, C1-C8 straight or branched alkyl, C1-C8 straight or branched haloalkyl, C1-C8 straight or branched alkoxy.

Abstract: A gossypol isatin Schiff base compound with antitumor activities represented by formula I: R1 and R2 are independently hydrogen, alkyl, cycloalkyl, alkoxy, nitro, halogen, unsubstituted or substituted phenyl, or unsubstituted or substituted benzyl. A method of preparing the compound of formula I is also disclosed.

Abstract: A compound having the formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A compound of chemical formula I: or formula II: or a pharmaceutical acceptable salt thereof is disclosed. R1 is OH or OAc; X is C or N; and R2 is H, alkyl, alkoxy, benzyloxy, haloalkyl, OH, CN, NO2, or halogen, provided that when X is N, R2 is nil.