192results about How to "Preserve activity" patented technology

Apparatus and methods are disclosed for treating a sample by selectively controlling sonic energy and/or selectively controlling the location of the sample relative to the sonic energy.

The invention relates to a method for preparing thrombin-chitosan self-assembly nano particles and application thereof. The method comprises: adding chitosan into an acetic acid aqueous solution to form a chitosan solution; adding thrombin into a buffer solution to form a thrombin solution; uniformly mixing the thrombin solution and the chitosan solution, adding a crosslinking agent for stirring, pouring the mixture into liquid paraffin for stirring, adding a dispersant, and performing emulsification; and adding the crosslinking agent for crosslinking reaction through water bath, performing filtration and acetone washing, using ethanol for washing and dehydration, and finally performing vacuum drying to obtain the thrombin-chitosan self-assembly nano particles. The method feeds the thrombin and the chitosan according to proportion to prepare thrombin-chitosan which is self-assembled into nano particles for the first time, maintains the stability of the thrombin of the thrombin-chitosan self-assembly nano particles, and gives better play to the comprehensive hemostatic effect of the thrombin and the chitosan of the thrombin-chitosan self-assembly nano particles. The method can be widely applied to tissue hemostasis, tissue sealing and tissue adhesion in the surgical fields such as general surgery, orthopaedics, heat and chest surgery, neurosurgery and gynaecology and obstetrics.

The invention relates to a curcumin or curcumin-ramification-containing composite feed additive and a use thereof. The use of the additive can promote the growth of the animals, and/or protect the livers of the animals, and/or improve the oxidation resistance of the animals, reduce the generation of lipid peroxide, and improve the immunity and the disease resistance, and/or improve the stress resistance of the fish, avoid the problem of 'irritable haemorrhage', promote the secretion of fish mucus, and solve the problems that the cultivated fish is easy to loosen squama, easy to fall off, and lack of fish mucus. The invention further relates to a method for cultivating the animals and an animal feed which contains the composite feed additive having the curcumin or curcumin ramification.

The present invention provides a lycium ruthenicum murr. vinegar fermentation method, and two lycium ruthenicum murr. vinegar drink preparation methods. The lycium ruthenicum murr. vinegar takes fresh lycium ruthenicum murr. as the raw material, and is obtained by the selection of raw materials, juicing, low-temperature alcoholic fermentation, acetic acid fermentation, ageing, filtration, sterilization and other process procedures. The resulting lycium ruthenicum murr. vinegar is blended to obtain a lycium ruthenicum murr. vinegar drink. Anthocyanin, organic acids, vitamins, VC and other active ingredients, especially anthocyanin contained in the lycium ruthenicum murr. are maximally preserved by the high acid environment of the lycium ruthenicum murr. vinegar and the vinegar drinks. Therefore, the lycium ruthenicum murr. vinegar is superior to table vinegar taking grain as raw materials, has a sweet and sour taste and pure flavor, is sour, cool and soft, nutrient-rich and high-quality, and has the efficiency of invigorating stomach, promoting digestion, tonifying, protecting health and the like.

Methods and systems for acoustically treating material using a continuous process in which material may be caused to flow in a continuous or intermittent fashion into/out of an acoustic treatment chamber where the material is exposed to focused acoustic energy. The methods and systems may be arranged to permit continuous processing for extended periods while an acoustic energy source operates at a relatively high power output. Treatment chambers may include features such as an acoustic window, a heat exchanger, inlet/outlet flow arrangements, an inspection window, insert elements that define a treatment volume size or shape, etc. Treatment system configurations relating to arrangements of a treatment chamber relative to an acoustic source and coupling medium, material flow paths, and others are provided.

The invention provides high-pressure homogeneous honey and a preparation method for a product thereof. Specifically, the method comprises the following steps: crushing and filtering pure honey or royal jelly, pollen and bee pupa respectively, taking filter liquor of any one or a filter liquor mixture of any two or any three of the materials to be mixed with 80 to 95 percent honey after vacuum concentration at the temperature of between 10 DEG C below zero and 30 DEG C, decompressing and stirring the honey or the mixture repeatedly, and delivering the honey or the mixture into a high-pressure homogenizer of 70MPa to be compressed and homogenized to be even. The royal jelly, the pollen, the bee pupa and the honey are stirred in vacuum and then are compressed and homogenized by adopting the high-pressure homogenizer of 70MPa to form a stable combination so as to be prepared into nutrient honey. The method adopts the high-pressure homogenizer of 70MPa and uses different parameter indexes to achieve the aims of improving the grain diameter and granularity size of the honey, improving the refined mouthfeel of the honey, enhancing the absorption of the human body to nutrient substances, realizing the cooperative application of the high-pressure homogenizing technology and the prior ultra-filtration and purification technology, and greatly improving the quality of the honey.

The invention discloses a preparation method of a 3D tissue engineering cell ring. By utilizing a relatively narrow growth space and a surface non-adhesion characteristic of a culture mold, added cells are self-assembled into a ring in a culture solution for promoting cell aggregation and leave the surface of a cell culture medium, and a macroscopic tissue block or organoid with a three-dimensional structure is formed. A naturally-formed extracellular matrix exists between the cells prepared by the method, the exogenous scaffold interference does not exist, and the communication and the information exchange between the cells are more complete and direct so as to reduce the difference between a culture environment and an in-vivo environment and more truly simulate an in-vivo cell growth environment. Moreover, the prepared cell ring is a cell body with a regular annular structure, can simulate the in-vivo cell microenvironment, links a 2D cell culture system with the research of tissuesand organs, and is beneficial to research of organoids.

The present invention mainly relates to a microwave drier, especially a microwave vacuum drier. A safe and energy-saving microwave vacuum continuous automatic drier includes a tank (A), a hoisting system (8), a vacuum system (9), a microwave heating system (1) on the tank (A), characterized by including a delivery device (6) inside the tank (A), a discharging device (5) below the delivery device (6), the materials in the tank (A) are non-metallic materials. On the basis of ensuring the strength and the toughness, the striking a light and discharging are avoided in the vacuum state when metal is heated in the microwave. The invention adopts the way of microwave radiation heating, utilizing the characters of microwave high efficiency, easy to control, antisepsis, sterilization, fast heating, even heating, fast dehydration, preserving to reduce the power waster and advance the efficiency.

The invention relates to the technical field of stem cells and especially relates to a placenta mesenchymal stem cell injection, a preparation method and application thereof. The placenta mesenchymal stem cell injection comprises placenta mesenchymal stem cells, vitamin C, dimethyl sulfoxide (DMSO), fetal calf serum (FBS), human albumin, rhizoma panacis majoris saponin and solvent. The placenta mesenchymal stem cell injection prepared according to the invention is characterized in that the materials are conveniently taken and the ethical violation problem is avoided; the injection prepared according to the invention can effectively preserve the activity of stem cells, can be directly used for recovery, need not be cleaned and centrifuged and is conveniently used; after the injection prepared according to the invention is fed back, the differentiation of the mesenchymal stem cells to the hepatic cells and the maturation of the hepatic cells can be boosted and the GVHD occurrence rate can be reduced.

The invention discloses health-care noodles containing canna edulis ker and a processing method thereof. The health-care noodles containing the canna edulis ker, provided by the invention, are prepared by adding 5-50 parts of canna edulis ker starch and 0.1-1 part of alkaline powder into every 100 parts of flour. The processing method comprises the following steps: mixing the canna edulis ker starch, the flour and the alkaline powder according to the proportion of the formula, and adding clean water, wherein the proportion of the clean water to mixed powder is 5:2; putting the mixture into a dough mixer to be blended evenly, mixing the mixture into a dough, curing the dough for 30 minutes at the environment of 25 DEG C and the humidity of 30%, sending the dough to a noodle press to be pressed into a flat cake, and cutting the flat cake into strips to make wet noodles; and drying, cutting off and packaging the wet noodles to obtain the health-care noodles containing the canna edulis ker. The processing method comprises the steps of mixing ingredients, mixing flour, curing, tabletting, extending, cutting into strips, drying, cutting off and packaging. Compared with general noodles, the health-care noodles containing the canna edulis ker, disclosed by the invention, are better in mouth feel, are richer in nutrition, are good in product quality, are stable in quality, and are better pleased and welcomed by consumers; at the same time, the health-care noodles containing the canna edulis ker, disclosed by the invention, have the characteristics of simple processing technology and low production cost.