9 results about "Chromatography liquid" patented technology

The utility model provides an environment-friendly row type pigment chromatography device which comprises chromatography tubes, a flow divider and an injector, the chromatography tubes are used for loading a stationary phase, the bottoms of the multiple chromatography tubes are communicated with the flow divider so that the multiple chromatography tubes can be connected to the flow divider in parallel, the injector is used for loading chromatography liquid, and the flow divider is communicated with the flow divider so that the multiple chromatography tubes can be connected to the flow divider in parallel. And the output end of the injector is communicated with the flow divider. According to the invention, multiple groups of pigment chromatography experiments can be completed at one time through the multiple parallel chromatography tubes, and multiple samples can be treated at the same time, so that time and resources are saved, and the experiment efficiency is improved; meanwhile, the environment-friendly row type pigment chromatography device has good air tightness, leakage of poisonous gas in the experiment process can be avoided, after the experiment is finished, chromatography liquid can be recycled through an injector and can be reused, waste liquid discharge is reduced, pollution to the environment is reduced, and the purposes of energy conservation and environment protection are achieved.

The invention discloses an experimental kit for chloroplast pigment extraction and separation and application, and belongs to the technical field of photosynthetic pigment extraction and separation, a surfactant and EDTA sodium are added during extraction, and an efficient aluminum foil silica gel thin layer and a composite chromatographic solution are adopted during separation; the chromatography medium is an efficient silica gel thin layer. In the process of extracting and separating the photosynthetic pigment, a surfactant and an EDTA (Ethylene Diamine Tetraacetic Acid) sodium metal chelating agent are added, the ratio of a chromatography medium to a chromatography liquid is optimized, a filtering and chromatography device is simplified, the extraction rate and the separation degree of the pigment are remarkably improved, the operation is simpler and safer, and finally 6-8 kinds of the photosynthetic pigment can be separated from fresh spinach leaves. 13 chloroplast pigments are separated from the leaf dry powder.

The utility model discloses a liquid storage bottle constant temperature and ventilation device for measuring lopinavir liquid chromatography, which belongs to the technical field of analysis and detection, and comprises a reaction unit, a temperature control unit and an exhaust unit, the reaction unit comprises a reaction box, a storage bottle is arranged in the reaction box, one side of the reaction box is provided with a door, and the other side of the reaction box is provided with an air inlet and an air outlet. The temperature control unit comprises a heating lamp arranged on the inner wall of the reaction box, an adjusting mechanism is arranged on the side face of the heating lamp, a power line penetrating through the reaction box is connected with the heating lamp, and the exhaust unit comprises an air guide pipe arranged at the top of the reaction box and penetrating through the interior of the reaction box. The top of the air guide pipe is provided with an air blowing mechanism, the top of the reaction box and the air guide pipe are provided with an exhaust pipe in a non-contact manner, and the device has the advantages that gas can be conveniently absorbed and subsequently treated, and the environment temperature is kept stable through the temperature control unit, so that the whole detection test is stably carried out.

The utility model relates to an amino acid paper chromatography experiment appliance, which belongs to the technical field of amino acid chromatography experiments and comprises a chromatography sample application scale, a chromatography developing vessel, a chromatography liquid small groove, a cylindrical filter paper core and circular chromatography filter paper. And the outer side is hollowed out for drawing the front edge of chromatographic liquid. According to the utility model, the design of the chromatography sample application scale helps an operator to draw a starting line of a sample application original point, a finishing line of chromatography expansion and measure the distance between the sample application original point and an amino acid color spot, so that the adverse effects of inclination and tilting of filter paper on an experiment in the traditional chromatography process are avoided from the source in the horizontal chromatography direction from the center to the circumference; the experiment efficiency and success rate are greatly improved, the chromatography vessel is smaller in size compared with a traditional chromatography device, the use amount of chromatography liquid is effectively reduced through the design of the chromatography liquid small groove, and the device is more environmentally friendly during use.

The utility model discloses a chromatography liquid concentration kettle for glabridin production, which comprises a lower kettle body and an upper kettle body, the lower kettle body and the upper kettle body are fixedly connected through a connecting frame, a plurality of supporting legs are arranged on the lower kettle body, a rotating ring is arranged between the lower kettle body and the upper kettle body, a sealing ring is arranged on the rotating ring, and the lower kettle body and the upper kettle body are fixedly connected through the connecting frame. The lower kettle body and the upper kettle body are respectively provided with an annular sealing groove, each sealing ring is provided with a reinforcing mechanism playing a reinforcing role, and the lower kettle body is provided with a driving motor through a supporting plate. Due to the design that the rotating ring is matched with the driving motor, the gear and the gear ring, the direction of the feeding pipe can be freely adjusted, and production flexibility and applicability are improved.

The invention discloses a chromatographic solution for separating chloroplast pigment from leaf dry powder, a product and application, and belongs to the technical field of photosynthetic pigment separation, the chromatographic solution is composed of petroleum ether, acetone and benzene, and the volume ratio of the petroleum ether to the acetone to the benzene is 7.5: 4: 1. The chromatographic solution can separate chlorophyll a'and chlorophyll a as well as chlorophyll b 'and chlorophyll b, and compared with the chromatographic solution in the prior art, the chromatographic solution is convenient for middle school students to distinguish chlorophyll a' and chlorophyll a as well as chlorophyll b 'and chlorophyll b respectively.

The application discloses a kind of polypeptides with anti-photoaging activity, composition and application, belong to polypeptide technical field.The amino acid sequence of polypeptide with anti-photoaging activity of the present application is at least one of AVSAANDPNGI, GNTELQAA.The present application is separated and purified from phycocyanin by enzymolysis, ultrafiltration, gel chromatography, liquid chromatography separation technology, and two polypeptides with anti-photoaging activity are obtained, these polypeptides and complex peptide segment all have good tyrosinase inhibitory activity, and the tyrosinase inhibitory activity of complex peptide segment is significantly better than single peptide segment.The polypeptide obtained in the present application has good application prospect in the preparation of products with anti-photoaging effect, and lays a foundation for high value-added utilization of phycocyanin and promotes the research and application of functional active peptides.

The utility model provides a gas chromatography liquid sample injection needle anti-bending device and gas chromatography liquid sample injection needle wherein the gas chromatography liquid sample injection needle anti-bending device comprises a connecting assembly and a telescopic sleeve, one end of the connecting assembly is connected with the telescopic sleeve, the other end of the connecting assembly is connected with the sample injection needle, and the telescopic sleeve is connected with the sample injection needle. The telescopic sleeve is arranged on the periphery of the sample injection needle in a sleeving manner, the telescopic sleeve and the sample injection needle are arranged at an interval, and the telescopic sleeve can stretch out and draw back in the direction parallel to the long axis of the sample injection needle. According to the anti-bending device for the gas chromatography liquid sample injection needle, the telescopic sleeve arranged on the periphery of the sample injection needle in the sleeving manner can freely stretch out and draw back in the long axis direction in the sample injection process, and the bending risk of the needle head caused by lateral stress can be reduced. When a needle head punctures the isolation pad, the sleeve shrinks to provide axial supporting force, and external impact is dispersed; after puncture is completed, the sleeve resets to wrap the needle head, accidental collision is avoided, the probability of breakage of the sample injection needle is reduced, the service life is prolonged, and the use cost is reduced.

The utility model relates to a card shell for glycosylated hemoglobin detection card belongs to the technical field of detection card, the utility model discloses through setting upper cover, the lower cover joint forms the card shell to provide the external protection of glycosylated hemoglobin detection card, can effectively avoid sample exposure, wherein, the upper cover part is equipped with chromatography liquid tank hole and strip's sample hole, not only can guarantee the function of original drop chromatography liquid, still can simulate linear sample's process, more favorably even lateral chromatography, through setting up the reflection platform to replace the original reflection strip to realize not contact chromatography membrane, can effectively avoid the sample accumulation caused by the capillary phenomenon after adding chromatography liquid and cause the test anomaly, can improve the reflectivity, avoid external light interference.