34results about How to "Stable and improved quality" patented technology

The invention belongs to the hydrogenation technology of castor oil, and more particularly relates to a high-temperature and high-pressure hydrogenation method of the castor oil. The high-temperature and high-pressure hydrogenation method of the castor oil adopts a high-temperature and high-pressure hydrogenation method with the reaction pressure of 2 to 2.5MPa and the temperature of 130 to 150 DEG C; the technique solves the problems in the prior operating technique, shortens the reaction time, with the whole acidolysis time being 7 to 8 hours, improves the utilization ratio of the equipment, and stabilizes and improves the product quality, with the iodine value of less than 3.0g / 100g. Meanwhile, the high-temperature and high-pressure hydrogenation method of the castor oil also greatly reduces the production cost, saves electricity and labor cost by 50 percent, halves the equipment depreciation and doubles the production efficiency.

An Aspergillus oryzae Pasp 0502 (CGMCC No.1374) is prepared through culturing in natural culture medium and purifying culture. It can be used in the production of Pu'er tea for increasing the contents of theapolyose and bisterin in Pu'er tea and shortening the productive period.

The invention discloses a synthetic method of 2,3-dichloropyridine(III). The synthetic method of 2,3-dichloropyridine comprises the following steps: (1) taking pyridine (I) as a main starting raw material, taking water or water vapor as a reaction medium, reacting the pyridine with chlorine completely in the presence of a chlorination inducer to obtain pyridine chloride (II) as a reaction raw material for the next step; (2) taking the pyridine chloride (II) obtained from the first step as the reaction raw material, taking water or water vapor as a reaction medium, enabling the pyridine chloride (II) to be in contact with hydrogen in the presence of an acid-bining agent and a catalyst, and carrying out catalyzed hydrogeneration reduction reaction to obtain the 2,3-dichloropyridine (III) of which the purity is 99% or above, wherein the catalyst is a nano IrO2-ZnO-MnO2 composite catalyst. A reaction equation is as shown in the specification, wherein n ranges from 2 to 5. The synthetic method of 2,3-dichloropyridine has the advantages of high reaction conversion, high selectivity, stable product quality, simplicity in production and operation, low cost and the like, and the shortcomings that the quality of the 2,3-dichloropyridine (III) obtained by an existing synthetic method is not stable, and the quality of the 2,3-dichloropyridine (III) can reach up to the standard after the 2,3-dichloropyridine (III) is rectified repeatedly necessarily are overcome.

The invention relates to a rhizopus oligorrhizae fungus and its application in the production of Pu'er tea, which belongs to the field of biological technology. Rhizopus arrhizus of the present invention is obtained after traditional preliminary screening, re-screening, natural culture medium cultivation, and rhizopus purification and cultivation procedures by producing bacterial strains and auxiliary materials, and the producing bacterial strain is Rhizopus arrhizus (Rhizopus arrhizus) Prhi501, preserved In the General Microbiology Center of the China Microbiological Culture Collection Management Committee, the address of the preservation unit is: No. 13, Beiyi Yiyi, Zhongguancun, Haidian District, Beijing, the preservation date: March 1, 2007, and the preservation number: CGMCC No.1963. The Rhizopus oligorrhizae fungus can improve the quality of Pu'er tea, and can be applied in the production process of Pu'er tea. The present invention has the advantages that: the rhizopus abacifolia fungus is used in the large-scale production process of Pu'er tea in the proportion of 0.1-0.8% by weight, and the tea polyphenols and theabrownin in the Pu'er tea can be controlled at an appropriate ratio. It achieves the effect of improving quality, shortens the processing time, and plays an important role in stabilizing and improving the quality of Pu'er tea.

The invention belongs to the technical field of tobacco planting, and in particular relates to a method for effectively reducing the heavy metal chromium content in tobacco leaves. This method uses the technical principle of molybdenum to antagonize chromium, and by adding trace element molybdenum in the process of tobacco planting, thereby antagonizing the absorption and utilization of chromium by tobacco. , evenly spray soluble molybdenum salt (or directly dissolve in irrigation water) into the cultivation soil; in the later stage, follow the conventional field management measures for cultivation and management; the specific dosage of soluble molybdenum salt is: 700~1100mg / L , the application amount in the soil is: 400~600L / mu, that is, 0.28~0.66kg / mu. The method for reducing the chromium content in tobacco leaves provided by the application has the characteristics of low cost, simplicity, practicality and reliability, can fundamentally reduce the chromium content in tobacco leaves, and can lay a foundation for the stability and improvement of tobacco leaf quality.

The invention relates to a viride trichoderma fungus and its application in the production of Pu'er tea, which belongs to the field of biotechnology. The Trichoderma viride fungus of the present invention is obtained after the traditional primary screening, re-screening, natural medium culture, and Trichoderma purification and cultivation process by the production strain and auxiliary materials. The production strain is Trichoderma viride (Trichoderma viride) PTri050102, which is preserved in General Microbiology Center of China Microbiological Culture Collection Management Committee, the address of the preservation unit: No. 13, North Yiyi, Zhongguancun, Haidian District, Beijing, the preservation date: March 1, 2007, and the preservation number: CGMCC No.1962. The viride trichoderma fungus has the function of improving the quality of Pu'er tea, and can be applied in the production process of Pu'er tea. The present invention has the advantages that: when Trichoderma viride is used in the large-scale production process of Pu'er tea in a proportion of 0.1-0.8% by weight, the tea polyphenols and theabrownin in the Pu'er tea can be controlled at an appropriate ratio to reach The effect of improving quality and shortening the processing time plays an important role in stabilizing and improving the quality of Pu-erh tea.

The invention discloses saccharomyces cerevisiae and the application thereof in wine brewing. The saccharomyces cerevisiae is saccharomyces cerevisiae NJZCC17 CGMCC No. 3284. The saccharomyces cerevisiae NJZCC17 is used to brew wine. Compared with the widely used reference commercial saccharomyces cerevisiae strain, the sugar content in the wine prepared by the saccharomyces cerevisiae is 1 to 4 percent, the alcohol content thereof is 9 to 14 percent and the glycerol yield thereof is 4 to 11g / L, the yield of hydrogen sulfide, acetaldehyde, acetic acid, urea and other metabolites which are bad for the flavor or the quality of the wine is lower, the malic acid utilization rate is higher, the volatile aroma components are balanced, the total ester yield is higher and the total high-grade alcohol yield is appropriate, the taste is more complicated and the brewing time is shortened; and therefore, the invention displays important roles in stabilizing and improving the quality of the domestic dry red wine, and displaying the brewing potential of cabernet sauvignon and other red wine in Hebei Changli production area.

An Asperfillus niger Pasp 0501 (CGMCC No.1373) is prepared through providing bacterial seeds and auxiliaries, screening, screening again, culturing in natural culture medium, and purifying culture. It can be used in the production of Pu'er tea for increasing the contents of theapolyose and bisterin and shortening productive period.

The invention belongs to the technical field of tobacco planting, and in particular relates to a method for effectively reducing the content of heavy metal arsenic in tobacco leaves. This method uses the technical principle of molybdenum to antagonize arsenic, and by adding trace element molybdenum in the process of tobacco planting, it antagonizes the absorption and utilization of arsenic by tobacco. , evenly spray soluble molybdenum salt (or directly dissolve in irrigation water) into the cultivation soil; in the later stage, follow the conventional field management measures for cultivation and management; the specific dosage of soluble molybdenum salt is: 700~1100mg / L , the application amount in the soil is: 400~600L / mu, that is, 0.28~0.66kg / mu. The method for reducing the arsenic content in tobacco leaves provided by the application has the characteristics of low cost, simplicity, practicality and reliability, can fundamentally reduce the arsenic content in tobacco leaves, and can lay a foundation for stabilizing and improving the quality of tobacco leaves.

The invention belongs to the technical field of rare earth cascade extraction automatic control, and particularly relates to a rare earth extraction process dynamic operating control method based on data driving. A soft measurement model with rare earth element component content is established by using an LSSVM (least square support vector machine), a cluster-based LSSVM sparsity improvement method and an LSSVM model dynamic updating method are provided, and a dynamic operating optimizing method for the rare earth extraction production process is provided based on the improved LSSVM so as to determine the optimum adjustment amount of various control variables during disturbance, so that dynamic and precise control over the rare earth element component content is realized, and further the quality of rare earth products is improved. The method can be used for stably improving the quality of the rare earth products.

The invention provides a processing technique of a fragrant Bailin Kongfu black tea, belonging to the technical field of Kongfu black tea processing and solving the problem of Kongfu black tea in theprior art. The fragrant Bailin Kongfu black tea takes tea leaves appropriate for preparing black tea as raw materials, and the finished product is prepared by the following steps of green drying, green rotating, combined withering, screening and conditioning, rolling, fermentation, primary curing and combined curing. The processing technique improves the endoplasm feature of Bailin Kongfu, leads the endoplasm aroma to be with keen sweetness and with obvious flower and fruit fragrance; tea soup has charming red color and brightness; and taste is mellow and sweet and has fruity fragrance. The Bailin Kongfu black tea prepared by the processing technique has keen fragrance, sweetness and obvious fleur in taste, is very popular among consumers and vast tea lovers, and has obvious economical benefits.

A Saccharomyces cerevisiae Psac 0501 (CGMCC No.1372) is prepared through culturing in natural culture medium and purifying culture. It can be used in the production of Pu'er tea for increasing the contents of theapolyose and bisterin in Pu'er tea and shortening productive period.