FOB Price
Obtenir le dernier prix5 ~ 50 / Acre ( Negotiable )
|Minimum Order
Localité:
Ningbo
Prix de commande minimale:
Commande minimale:
25 Kilogram
Packaging Detail:
1kg/bag, 5kg/bag, 25kg/drum
Delivery Time:
Prompt
Supplying Ability:
5000 Kilogram per Month
Payment Type:
T/T, L/C, D/A, D/P, Western Union, PayPal
Personne àcontacter Mr. Michael
No 8, Laoshan Rd, Beilun, Ningbo, Zhejiang
L-Cystine
Indications and Usage
Cystine is a dimeric amino acid formed by the oxidation of two
cysteine residues which covalently link to make a disulfide bond.
This organosulfur compound has the formula (SCH2CH(NH2)CO2H)2. It
is a white solid, and melts at ******9 °C. It was discovered in
***0 by William Hyde Wollaston but was not recognized as being
derived of proteins until it was isolated from the horn of a cow in
***9.[1] Through formation of disulfide bonds within and between
protein molecules, cystine is a significant determinant of the
tertiary structure of most proteins. Disulfide bonding, along with
hydrogen bonding and hydrophobic interactions is partially
responsible for the formation of the gluten matrix in bread. Human
hair contains approximately 5% cystine by mass.
The disulfide link is readily reduced to give the corresponding
thiol, cysteine. This reaction is typically effected with thiols
such as mercaptoethanol or dithiothreitol.
(SCH2CH(NH2)CO2H)2 2 RSH → 2
HSCH2CH(NH2)CO2H RSSR
For this reason, the nutritional benefits and sources of cystine
are identical to those for the more common cysteine. Disulfide
bonds cleave more rapidly at higher temperatures.
Package
*5kg/drum, double layers plastic bags inside.
Storage Situation
Stored in a cool and dry well-closed container. Keep away from
moisture and strong light/heat.
