About the HTLV Test kit

The human T-lymphotropic virus type I (HTLV-1) is a human retrovirus that is known to cause a type of cancer, referred to as adult T-cell leukemia and lymphoma, and a demyelinating disease called HTLV-I associated myelopathy/Tropical spastic paraparesis (HAM/TSP). HTLV-I is one of a group of closely related primate T lymphotropic viruses (PTLVs). Members of this family that infect humans are called Human T-lymphotropic viruses, and the ones that infect old world monkeys are called Simian T-lymphotropic viruses (STLVs). To date, four types of HTLVs (HTLV-I, HTLV-II, HTLV-III, and HTLV-IV) and four types of STLVs (STLV-I, STLV-II, STLV-III, and STLV-V) have been identified. The HTLVs are believed to originate from intraspecies transmission of STLVs. The original name for HIV, the virus that causes AIDS, was HTLV-III; this term is no longer in use . The HTLV-1 genome is diploid, composed of two copies of a single-stranded RNA virus whose genome is copied into a double-stranded DNA form that integrates into the host cell genome, at which point the virus is referred to as a provirus. A closely related virus is bovine leukemia virus BLV.

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The nature of catechin

 Catechins(catechin) are widely distributed in plant kingdom, the Acacia catechu, gambir bark abounds with tannins.

Catechins and their oxidation products are hydrocarbon oxygen ternary compound, is made from sugar through a series of enzymes, shikimic acid, by the formation of benzene compounds, the synthesis of catechin.

Catechins has obvious characteristics of phenol, can cause the heavy metals and protein precipitation, therefore, is a kind of phenol content. Phenol content because can make the protein to precipitate, has the size of raw hides tanning into leather performance, so also called tannins or tannin substances.

Catechin and some typical plant tannins (gallic tannin, etc.), compared the performance of the tanning is weaker.

Flavan derivatives. Widely exists in plants, including crystallization water from water/acetic acid needle crystal. Melting point of 93 ~ 96 ℃; Instead of containing water of crystallization of crystalline melting point of 175 ~ 177 ℃. Polarimetric + 16 ° ~ + 18.4 °. Its raceme also assumes the needle crystal, melting point of 212 ~ 216 ℃. Slightly soluble in cold water, ether, soluble in hot water, ethanol, glacial acetic acid and acetone, insoluble in benzene, chloroform and petroleum ether. Catechu essence of cis stereo heterogeneous surface catechu (epicatechin) also widely exists in plants, melting point 242 ℃, polarimetric [alpha] D - 68 ° (ethanol).

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The role of Lincomycin Hydrochloride

Lincomycin Hydrochloride can inhibit bacterial protein synthesis, for the majority of gram-positive bacteria and some anaerobic gram-negative bacteria have antibacterial effect. Of gram positive bacteria antibacterial effect similar to erythromycin, sensitive bacteria including streptococcus pneumoniae, s. pyogenes, green streptococcus, staphylococcus aureus, corynebacterium diphtheriae, etc. Anaerobic bacteria stabler sensors including bacteroides, fusobacterium, propionic acid bacillus, bacillus, bifidobacterium, streptococcus, most digestion aureus, gas capsule coli, tetanus, and some actinomycetes, etc. This product can slow resistant staphylococcus. This product of erythromycin resistant staphylococcus aureus often showed cross resistance.

Mainly used for staphylococcus aureus, streptococcus pneumoniae, streptococcus pneumoniae caused by respiratory tract infection, osteomyelitis, joints and soft tissue infection, biliary infection and sepsis. Also can be used for some anaerobic bacteria infection. Topical treatment of gram-positive bacteria suppurative infection.

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A brief introduction Pyrolase(TM) 160 enzyme

Pyrolase(TM) 160 enzyme agitator is a abounding spectrum β-glycosidase with action abut guar, hydroxypropyl guar, carboxymethyl guar, carboxymethyl hydroxypropyl guar, carboxymethyl cellulose, barley β-glucan, and locust bean gum. The action adjustment of Pyrolase(TM) 160 is both endo and exo, accepting it to bigger allay the bendability of guar and derivatized guar solutions by cleaving aural connected polysaccharide chains and aswell by cleaving disaccharide units from the ends of the polymers.
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What is arabinose?

Arabinose have eight kinds of isomers, such as beta - D - arabinose, beta - L - arabinose, etc. Arab sugar industry product mainly has two kinds: D - Arab sugar can be obtained from degradation of d-glucose, nature is relatively rare, mainly appear in some bacteria polysaccharides.

Natural L - Arab sugar can be made of D - xylose is uridine diphosphate derivatives by enzymatic isomerization reaction to obtain, also from the corn husk hemicellulose Arab xylose is extracted.

Arabinose original system called Arab tree from a secretion of the classics in colloidal complex chemical and physical methods extracted a dextral simple sugars, natural L - arabinose rarely exist in free, in many pine trees in the heartwood of L - Arab sugar containing free state. Widely exists in plants, often combined with other monosaccharides, in the form of heteropoly sugar exist in the colloid, hemicellulose, pectin acid polysaccharide, bacteria and some glycoside.

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A brief introduction Reforming catalyst for Methanol steam to hydrogen MWC-612

Catalytic reforming: under the condition of a catalyst, to rearrange the molecular structure of hydrocarbons in gasoline fraction into a new molecular structure called catalytic reforming process. One of oil refining process, heating, hydrogen pressure and the presence of catalyst, make the light gasoline fraction obtained crude distillation (or naphtha) into a high octane number gasoline rich in aromatic (reforming gasoline), and the by-product process of liquefied petroleum gas and hydrogen. Reforming gasoline can be directly used for gasoline blending components, can also be used by the aromatics extraction from benzene, toluene and xylene. By-product hydrogen gas is oil refinery hydrogenation unit (e.g., hydrofining, hydrocracking) with an important source of hydrogen.

Built in Germany in the 1940 s with molybdenum oxide (or chrome oxide)/aluminum oxide as catalyst (see metal oxide catalyst) of catalytic reforming industrial devices, because of the catalyst activity is not high, the equipment complex, is now obsolete. Released in 1949, the United States with precious metals platinum catalyst reforming new craft, in the same year in November in Michigan built the first set of industrial equipment, in the raw material pretreatment, catalyst performance, continuous improvement process and reactor structure, etc. In 1965, China developed platinum reforming unit in daqing refinery production. In 1969, platinum-rhenium bimetallic catalysts used in catalytic reforming, improve the depth of the reforming reaction, and the increased gasoline and aromatic hydrocarbons and hydrogen production rate, the catalytic reforming technology has reached a new level.

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