Flavouring Agent Pyrrolidine Manufacturers

China H&Z® L-Pyroglutamic Acid (also known as PCA, 5-oxoproline, pidolic acid, or pyroglutamate for its basic form) is a ubiquitous but little studied natural amino acid derivative in which the free amino group of glutamic acid or glutamine cyclizes to form a lactam.It is a metabolite in the glutathione cycle that is converted to glutamate by 5-oxoprolinase. Pyroglutamate is found in many proteins including bacteriorhodopsin. N-terminal glutamic acid and glutamine residues can spontaneously cyclize to become pyroglutamate, or enzymatically converted by glutaminyl cyclases. This is one of several forms of blocked N-termini which present a problem for N-terminal sequencing using Edman chemistry, which requires a free primary amino group not present in pyroglutamic acid. The enzyme pyroglutamate aminopeptidase can restore a free N-terminus by cleaving off the pyroglutamate residue.

China H&Z® Sodium Erythorbate is White crystalline powder,Slightly salty. It is quite stable in the air in a dry state. But in solution, it will deteriorate in the presence of air, trace metals, heat and light. Melting point above 200 ℃ (decomposition). Easily soluble in water (17g / 100m1). Almost insoluble in ethanol. The pH value of the 2% aqueous solution is 5.5 to 8.0.Used as food antioxidants, anti-corrosion color additives, Cosmetic antioxidants. Sodium Erythorbate can consume oxygen in cosmetics, reduce high-valent metal ions, transfer the redox potential to the reduction range, and reduce the generation of undesirable oxidation products. Sodium Erythorbate can also be used as anticorrosive color additive.

China H&Z® Lichen/seaweed source Vitamin D3 is one of those vitamins for which a deficiency can cause severe effects. Children that do not get enough vitamin D3 in their diets are at increased risk of developing rickets, a disease that causes malformations of bones and teeth in children.
Adults with low levels of vitamin D3 are more likely to develop osteomalacia (similar to rickets) and to suffer from osteoporosis,a bone-weakening disease. It can be widly used in medicine supplements ,nutrition, food & feed additives etc.

Sodium dodecylbenzenesulphonate CAS:25155-30-0 DDBS LAS-30% LAS-40% LAS-50% LAS-60% LAS-70% LAS-80% LAS-85%

Methyl dihydrojasmonate CAS:24851-98-7

China H&Z® Bon/3-hydroxy-2-naphthoic Acid is light yellow powder,3-Hydroxy-2-naphthoic acid is applied in producing colour Naphthol as and other kinds intermediates of colour naphthol. Moreover, it is intermediates of medicine and organic pigment.