摘要:
The present specification discloses a ruminant feed additive composition which contains as an active ingredient a phosphoric acid-amino acid-polyvalent metal composite salt (final composite salt) which is insoluble in neutral or alkaline water and is soluble in acidic water and which can be obtained by treating a composite salt composed of a basic amino acid, magnesium and phosphoric acid with a salt of a divalent or trivalent (polyvalent) metal other than magnesium, or by treating the above-mentioned composite salt with the polyvalent metal salt and a condensed phosphoric acid component (alone) or the condensed phosphoric acid component and a phosphoric acid component (in combination), this composition taking the form of a powder or granules. The above-mentioned final composite salt can exhibit the excellent stability to neutral or slightly acidic water, namely, the low solubility therein in comparison with the intermediate composite salt, and it can have both the excellent insolubility of the basic amino acid in a rumen of a ruminant and the excellent elution thereof in an abomasum and lower digestive organs.
摘要:
Tripeptide sweeteners represented by formula (I)X--Asp--Y--ORwhereinX is glycine or a D or DL-isomer of alanine, .alpha.-aminobutyric acid, serine, threonine, norvaline, asparagine, B-methyl aspartate, proline or pipecolic acid, andY is a D, L or DL-isomer of alanine, phenylalanine, phenylglycine, serine or .beta.-aminobutyric acid or a salt thereof, andR is methyl, ethyl, propyl or isopropyl, are disclosed.
摘要:
Spherical aggregate crystals of a phosphoric acid/lysine/magnesium composite salt represented by formula (1):R.sub.a Mg.sub.b H.sub.c PO.sub.4.(H.sub.2 O).sub.n (1)whereR is a lysine cation;a is 0.15 to 1.0;b is 1.0 to 1.42;c is 0 to 0.3;n is 0 to 10; anda+(2.times.b)+c=3.
摘要翻译:由式(1)表示的磷酸/赖氨酸/镁复合盐的球形聚集晶体:RaMgbHcPO4。(H2O)n(1)其中R是赖氨酸阳离子; a为0.15〜1.0; b为1.0〜1.42; c为0〜0.3; n为0〜10; 和+(2xb)+ c = 3。
摘要:
Disclosed herein is a process for separating N-protected-.alpha.-L-aspartyl-L-phenylalanine, more particularly a process for selectively separating N-protected-.alpha.-L-aspartyl-L-phenylalanine from a solution of N-protected-.alpha.-L-aspartyl-L-phenylalanine containing at least N-protected-.alpha.-L-aspartyl-D-phenylalanine as impurity.
摘要:
A process is described for the synthesis of N-protected-L-.alpha.-aspartyl-L-phenylalanine by both (a) the rection of an N-protected-L-aspartic anhydride and a R.sub.1 -L-phenylalanine, and (b) the reaction of an N-protected-L-aspartic anhydride and L-phenylalanine in an aqueous medium in the presence of R.sub.2, where R.sub.1 may be an alkali metal salt, alkaline earth metal salt, ammonium salt or organic amine salt, and R.sub.2 may be an ammonium salt or an alkali or alkaline earth metal salt of an inorganic or organic acid.
摘要:
A process is described for the synthesis of N-protected-L-.alpha.-aspartyl-L-phenylalanine by both (a) the reaction of an N-protected-L-aspartic anhydride and a R.sub.1 -L-phenylalanine, and (b) the reaction of an N-protected-L-aspartic anhydride and L-phenylalanine in an aqueous medium in the presence of R.sub.2, where R.sub.1 may be an alkali metal salt, alkaline earth metal salt, ammonium salt or organic amine salt, and R.sub.2 may be an ammonium salt or an alkali or alkaline earth metal salt of an inorganic or organic acid.
摘要:
A method for converting .beta.-aspartylphenylalanine derivative (1) to .alpha.-aspartylphenylalanine derivatives (2) and (3), said derivatives having the following structures: ##STR1## which comprises: reacting said .beta.-aspartylphenylalanine derivative (1) at a temperature of from 0.degree. to 200.degree. C. for a time period of from 30 minutes to 80 hours, in a C.sub.1 to C.sub.4 alcohol solvent with or without stirring, wherein R and R' represent hydrogen or an alkyl group having from 1 to 4 carbon atoms.
摘要:
A readily soluble 2',3'-dideoxyinosine composition is prepared by combining 80 to 1 parts by weight of a basic amino acid and 20 to 99 parts by weight of 2',3'-dideoxyinosine. The greater solution velocity of this composition improves solubility for therapeutic uses.
摘要:
A ruminant feed additive composition comprises a phosphoric acid-amino acid composite salt and a water-insoluble salt of a polyvalent-metal-sensitive water-soluble high-molecular weight substance. The composite salt contains a basic amino acid, an alkaline-earth metal and phosphoric acid, and is insoluble in neutral or alkaline aqueous solution, but is soluble in acidic aqueous solution.
摘要:
A ruminant feed additive composition in the form of a powder or granules comprises as active ingredients a gastric antacid, a phosphoric acid-amino acid-polyvalent metal composite salt and optionally a water-insoluble salt of a polyvalent metal-sensitive water-soluble high-molecular weight substance. The phosphoric acid-amino acid-polyvalent metal composite salt is composed of a phosphoric acid such as orthophosphoric acid, a polyphosphoric acid or a metaphosphoric acid, a basic amino acid such as lysine or methionine, an alkaline earth metal such as calcium or magnesium and, optionally, a polyvalent metal such as aluminum.