Mucuna pruriens introduction

Mucuna pruriens plant species belonging Erythrina subfamily. Annual twining vine. Branches slightly was carried out in thin pilose. Raceme prolapse, corolla purple
or white, often shorter, soft fruit, green, densely gray or light brown hair, mature a little flat, black; Seed oblong-elliptic, gray, yellowish brown, shallow orange or black, sometimes with stripes or spots, hilum ca. 7 mm long, pale yellow white. In October flowering, fruiting in November. Tender pod and seed is toxic, but after soaking by water or water a day and night, for foods or for fodder; Also can be green manure crops. Guangdong, hainan, guangxi, sichuan, guizhou, hubei, and Taiwan (yisheng), and other provinces and autonomous regions.



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The summary of chlorophyll

Chlorophyll is the main plant photosynthetic pigment, photosynthesis is through the synthesis of some organic compounds to the process of light energy into chemical energy. Chlorophyll can build actually exist in allphotosynthetic organisms, including green plant, the original nuclear blue green algae (cyanobacteria) and eukaryotic algae. Chlorophyll absorbs energy from the light, and then the energy used to turn carbon dioxide into carbohydrates. The family of pigment is a kind of fat, is located in the thylakoid membrane. Chlorophyll absorbs most of the red and purple light but reflect a green light, so the chlorophyll green, its optical absorption plays a central role in photosynthesis. Chlorophyll for magnesium porphyrin compounds, including chlorophyll a, b, c, d, f, and the chlorophyll and bacteria chlorophyll and so on. To magnesium chlorophyll. Chlorophyll a hematopoietic, vitamins, detoxification, disease resistance, and other purposes.



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An overview of reserpine

A kind of indole alkaloids. Molecular formula C33H40N2O9. Exists in rauwolfia a variety of plants, in the vomiting Laura fu wood content up to 1%. Colorless ribbed crystals. Melting point of 264 ~ 265 ℃ (decomposition), than the rotation to 117.7 ° (chloroform, C = 1). Soluble in chloroform, dichloromethane, glacial acetic acid, soluble in benzene, ethyl acetate, slightly soluble in acetone, methanol, ethanol, ethyl ether, acetic acid and citric acid in dilute aqueous solution. Solution of reserpine place turn yellow over time, and a significant fluorescence, fluorescence enhancement after adding acid and exposure. Reserpine is a weak base and its hydrochloride is colorless crystals, melting point 224 ℃ (decomposition); Pyridine compounds for yellow crystal, melting point of 183 ~ 186 ℃ (decomposition). Reserpine can lower blood pressure and slow heart rate, slow, gentle and persistent, lasting stability for the central nervous system, is a kind of very good sedatives.



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The New type adsorption method extracting Bromelain

Pineapple squeeze juice, press the SAP volume flow rate and 10% sodium chloride, natural sedimentation under greenhouse 120 h, abandon to sediment, clear liquid. Will clear liquid into a beaker, under the condition of stirring, the clear liquid product 0.05% EDTA2Na, added 0.02% vitamin C, immediately add 0.1% tannin and homemade adsorbent and let stand for 1 h under 4 ℃, centrifugal cast to the supernatant, collect sediment, add 2 to 3 times the ascorbic acid solution of PH 4.5, 30 min. Centrifugal 14 min, abandon to sediment, collecting filtrate, with frozen vacuum drying for a quick bromelain. Process is as follows: pineapple scraps (press) to SAP (impurities), clear liquid (add stabilizer) and stable liquid (tannin) - tannins sediment (des) - filtrate (dry) and enzyme products.

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By-products for the influence of L - threonine production（

Acetic acid, lactic acid, valine, aspartic acid, alanine for L - threonine main by-product of fermentation. Including acetic acid, generally two kinds of conditions, equipment engineering bacteria to breathe oxygen deficiency is restricted or glucose consumption rate is greater than the engineering bacteria TCA cycle flow ability. When acetic acid can inhibit the production of L - threonine, no more than 2 g/L. As with lactic acid, valine is mainly due to the lack of dissolved oxygen, when the dissolved oxygen, valine concentration will not increase, the new use of lactic acid bacteria can be weight. And relative to the acetic acid, under the aerobic condition, bacteria lactic acid production of L - threonine impact is not big, but when its concentration is higher than 10 g/L, can inhibit the synthesis of threonine.

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Polylysine preservation effect on pork

Pork is the main source of meat residents, due to the cooling of pork is better than frozen meat, hot meat in flavor, taste, nutrition and health and safety aspects, and therefore favored by consumers. However, due to the action of microorganisms, chilled pork at 0 ~ 4 ℃ storage conditions the shelf life is typically only about 5 d. Thereby inhibiting the growth of microorganisms in meat, is very important to prolong the shelf-life. Polylysine are combined to form a class by l- lysine ε- amino and carboxyl α- by poly-amino acid peptide bonds, a safe, efficient and nutrition, good thermal stability. Studies have shown that ε-pl Gram-negative bacteria, Gram-positive bacteria, yeasts and fungi have a better inhibition. In some developed countries ε-pl has been widely used in food processing, such as bread, pastries, dairy and frozen food; has ε-pl used in milk, fresh vegetables and other fresh-cut areas, and the application on the cooling pork almost in a blank.

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(R) - 3 - Benzyloxy Pyrrolidine Hcl method

A (3R) _1_ [(IR, 2R)-2_ [2_ (3,4 _ dimethoxyphenyl) ethoxy] cyclohexyl] -3 - ol pyrazole slightly burned, characterized in that , said method comprising the steps of: (1) (3R) - pyrrolidin-hydroxy protecting agent and a silane under the action of a base protected silylated to give (R)-N-protected-3-silane - hydroxy-pyrrolidine; ( 2) in step (a) the resulting (R)-N-protected-3 - hydroxy-pyrrolidine under the action of a base and benzyl chloride or benzyl bromide reacted (R)-N-protected-3-silane - group section pyrrole burning; (3) in the step (2) the resultant (R)-N-protected-3-silane - benzyloxy-pyrrolidine-stripped under the action of an acid protecting group may silane (3R) - benzyloxy-pyrrolidine; (4) the step (3) Income (3R) - After benzyloxy pyrrolidine and cis-1 ,2 Epoxycyclohexane by ring-opening reaction, and then split too (IR, 2R) - [(3R) -3 - benzyloxy-1 - pyrrolidinyl] cyclohexanol; (5) in step (4) obtained (IR, 2R) - [(3R) _3_ section-l - pyrazol slightly alkyl] cyclic hexanol and 4 - (2 - haloethyl) _1 2 - dimethoxyphenyl reacted (3R)-l-[(IR, 2R) ~ 2 ~ [2 ~ (3, 4 - dimethyl methoxyphenyl) ethoxy] cyclohexyl] oxy pyrrole _3_ burning section; (6) of step (5) the resulting (3R) -1 - [(IR, 2R) ~ 2 ~ [2 ~ (3, 4 - dimethoxyphenyl) ethoxy] cyclohexyl] oxy pyrazole section slightly burned _3_ debenzylated to give (3R) _1_ [(IR, 2R) _2-[2_ (3,4 _ dimethoxyphenyl yl) ethoxy] cyclohexyl] -3 - pyrrolidinol.

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