4results about How to "Reduce tannin content" patented technology

The invention discloses a rosa roxburghii juice low-temperature freezing deastringency technical method and application, the method utilizes the characteristic that tannin substances are easily dissolved in ethanol to form precipitates under a low-temperature condition, the rosa roxburghii juice is pre-cooled, edible alcohol is added, the mixture is stirred for 15-20 minutes under the low-temperature condition, silica gel or diatomite is adopted for filtering after reaction, and the rosa roxburghii juice is obtained. According to the rosa roxburghii tratt juice obtained by the method, the content of tannin is 6-10 mg / mL and is reduced by 30% or above, the loss rate of vitamin C can be controlled within 10%, the inherent flavor characteristics of rosa roxburghii tratt are reserved to the maximum extent, and the rosa roxburghii tratt juice is rich in flavor and rich in flavor. Meanwhile, operation is simple, and industrial application is facilitated.

This invention relates to the food field and discloses a compound plant product, characterized in that the product comprises jujube extract, soybean peptide, corn oligopeptide, artichoke extract, amla, jujube seed, and optional additives; on a dry basis, the weight ratio of the jujube extract, soybean peptide, corn oligopeptide, artichoke extract, amla, and jujube seed is 1:(0.03-0.5):(0.03-0.5):(0.003-0.02):(0.005-0.05):(0.005-0.05); the tannin content in the product is 0-0.5 mg / g dry basis weight. The compound plant product provided by this invention, through the specific combination of the above components, exhibits higher antioxidant activity, better DPPH scavenging ability, and better ABTS scavenging ability; per gram dry basis, the tannin content is low, with minimal astringency and bitterness, resulting in a superior flavor.

The utility model relates to a kind of foldable atmosphere control shockproof astringency-removing fresh-keeping box, box and upper cover are provided with fold; Box is provided with vent hole;Upper cover is provided with atmosphere control film;First baffle, second baffle and shock pad are arranged in box;First baffle and second baffle are cross-connected;Integrated atmosphere control, shockproof, astringency-removing function in one, and foldable, suitable for the transportation fresh-keeping box of fruit such as persimmon etc.;It can minimize the extrusion, knock of fruit such as persimmon in storage and transportation process;And inhibit the respiration of fruit by atmosphere control technology, reduce the consumption of nutrient substance;While inhibiting the growth and reproduction of microorganism on the surface and inside of fruit, and reduce the tannin content in fruit such as persimmon, to achieve astringency-removing effect;Further realize the purpose of prolonging the storage period of fruit such as persimmon and improving fruit quality, improve the economic value of fruit such as persimmon;Its box and upper cover are folded, reduce transportation cost, reduce space occupation in transportation process, improve logistics efficiency.

The invention discloses saccharomyces cerevisiae, a method for preparing roxburgh rose fermented wine and application of the saccharomyces cerevisiae, the saccharomyces cerevisiae GZHM-28 is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC M20221967, and the preservation date is December 13, 2022. The saccharomyces cerevisiae GZHM-28 disclosed by the invention has relatively high tolerance to high glucose, low pH, SO2 and ethanol, can reduce the acidity of organic acid in food, can remarkably reduce the content of tannin in roxburgh rose juice through a way of adsorbing or generating tannin hydrolase, and is prepared into tasty, slightly sour and low-astringent low-alcohol roxburgh rose wine.