59 results about "Grape Seed Proanthocyanidins" patented technology

The invention relates to an extraction method of procyanidine in grape seeds and overcomes the problems that procyanidine in grape seed husk is difficultly dissolved out and the polymerization degreeof the procyanidine in the extract is high are overcome. According to the extraction method of the procyanidine in the grape seeds, aspergillus niger is used as strain for fermenting the grape seeds;the enzymes such as cellulase and pectinase produced by the aspergillus niger are used for degrading the grape seed husk, so that the procyanidine is more easily dissolved out; alcohols with differentvolume fractions are used as desorption solutions for eluting macroporous adsorption resin; the procyanidine is graded and is subsequently subjected to partially acidolysis, so that the content of procyanidine oligomer in the extract is increased. The content of the oligomerized procyanidine in the extract is greater than or equal to 98%; the average polymerization degree of the procyanidine is 2.5-3.0; the procyanidine is easily absorbed in the body and is high in anti-oxidation activity.

The invention discloses a functional compound feed additive for alleviating vomitoxin poisoning of weaned piglets. The functional compound feed additive is prepared from the following components: 0.6 to 0.8 percent of arginine, 0.3 to 0.5 percent of glutamic acid, 0.2 to 0.5 percent of methionine, 2.0 to 3.0 percent of baicalin selenium, 0.6 to 1.5 percent of baicalin zinc, 0.5 to 1.0 percent of baicalin copper, 1.5 to 2.0 percent of baicalin, 0.6 to 1.3 percent of grape seed proanthocyanidin, 1.2 to 1.6 percent of globe artichoke extract, 0.4 to 1.0 percent of vitamin A, 0.6 to 1.0 percent of vitamin C, 1.7 to 3.0 percent of vitamin E, 2.8 to 4.0 percent of zymosan, 4.5 to 5.0 percent of astragalus polysaccharide, 2.5 to 3.3 percent of echinacea polysaccharide, 0.2 to 0.5 percent of lactobacillus, 2.7 to 4.0 percent of bacillus subtilis, 0.2 to 0.5 percent of enterococcus faecium, and 65.5 to 76 percent of zeolite powder. The functional compound feed additive has relatively good alleviation effects for oxidization injury of weaned piglet intestinal tracts, reduction of immunity, intestinal flora disturbance and growth suppression.

The invention relates to a method for enhancing biological and protein stability of iced white wine, which comprises the following steps: (1) filtering Italian Riesling iced white wine subjected to alcohol fermentation through a 0.45 mu m filter membrane to obtain the filtered Italian Riesling iced white wine; (2) preparing an iced wine solution containing lysozyme and an iced wine solution containing sodium metabisulfite; and (3) sequentially adding the iced wine solution containing lysozyme, iced wine solution containing sodium metabisulfite and a grape seed proanthocyanidin concentrated solution into 1L of filtered Italian Riesling iced white wine, and regulating the pH value to 3.5-4.5 with a saturated potassium bitartrate solution, wherein the lysozyme concentration is 150-250 mg / L, the total SO2 concentration is 150-200 mg / L, and the total polyphenol concentration of the wine is 0.5-0.7 g / L. The method can prevent the iced white wine from the pollution of putrefactive microorganisms in the iced wine storage period without influencing the protein stability of the Italian Riesling iced white wine, and has the characteristics of no pollution, high safety and no residue as compared with antibiotics and chemical preservatives.

The present invention relates to a method for cultivating cannabis seedlings. The method comprises the step of adding grape seed proanthocyanidins to a medium of cannabis seedlings. The grape seed proanthocyanidins added in the method of the invention are derived from grape seeds, are a natural antioxidant existing in plants, are highly soluble in water, and are easily absorbed by the cannabis seedlings, thereby improving the tolerance of the cannabis seedlings to cadmium stress, and causing no negative influence on the cannabis seedlings in the absence or low content of cadmium stress. The method of the present invention does not cause secondary pollution or damage ecological balance compared with conventional methods in which heavy metal chelating agents or heavy metal adsorption microorganisms are added. The method of the invention has the advantages of quick effect and good controllability, and is very suitable for cultivation of cannabis, thereby better enabling cannabis to repaircadmium-contaminated soil.

A method for preparing oligomeric grape seed proanthocyanidins. After the grape seeds are rinsed with clean water, they are added to an ethanol solution for leaching, the grape seeds are removed by filtration, and an extract is collected; Brick red procyanidin crude precipitate, suction filtration and collect the precipitate; dissolve the precipitate in ethanol solution, collect the filtrate containing dissolved procyanidin; then filter the filtrate with nanofiltration membrane to collect the oligomers that are trapped and precipitated on the filter membrane The oligomeric proanthocyanidins are obtained by washing the precipitates with acetone and ethanol respectively, and drying them in a drying oven.

The invention belongs to the technical field of comprehensive utilization of grape seeds, and in particular relates to a method for efficiently extracting and separating grape seed proanthocyanidin oligomers. The high-efficiency extraction and separation method of grape seed proanthocyanidin oligomers comprises the following steps: (1) low-temperature drying and crushing; (2) degreasing; (3) enzyme treatment; (4) proanthocyanidin extraction; (5) low-temperature concentration; (6) Proanthocyanidin polymer degradation; (7) purification; (8) low-temperature concentration and drying. The extraction and separation method significantly improves the yield of grape seed proanthocyanidins and the content of oligomeric proanthocyanidins in the extract. At the same time, the low-temperature extraction and separation well retains the biological activity of proanthocyanidins, and high-purity proanthocyanidin oligomers are obtained through column chromatography fractional purification. .