- Chopping Blocks[5]
- Sponges & Scouring Pads[2]
- Hooks & Rails[3]
- Mats & Pads[3]
- Shower Caps[1]
- Drains[1]
- Furniture Accessories[6]
- Fruit & Vegetable Tools[5]
- Other Cooking Tools[1]
- Packaging Bags[3]
- Lint Rollers & Brushes[4]
- Adhesive Tape[2]
- Colanders & Strainers[2]
- Openers[6]
- Other Food Processing Machinery[1]
- Cake Tools[4]
- BBQ Tools[1]
- BBQ Grills[1]
- Baking & Pastry Tools[1]
- Storage Boxes & Bins[1]
- Egg Tools[1]
- Bar Accessories[6]
- Ovens[1]
- Kitchen Toys[1]
- Blenders[1]
- Meat & Poultry Tools[1]
- Other Home Storage & Organization[1]
- Steamers[1]
- Knife Sets[2]
- Juicers[1]
- Kitchen Knives[1]
- LED Flashlights[6]
- Other Lights & Lighting Products[6]
- LED Headlamps[6]
- Event & Party Supplies[6]
- Other Holiday Supplies[6]
- Flying Disc[1]
- Makeup Mirror[1]
- Chopsticks[1]
- Party Masks[2]
- Sexy Costumes[1]
- Clips[1]
- Ice Cream Tools[1]
- Other Household Sundries[5]
- Key Chains[1]
- Buckets[6]
- Blocks[1]
- Other Gifts & Crafts[1]
- Ballpoint Pens[1]
- Bar Sets[6]
- Bar Tools[1]
- Packaging Boxes[2]
- Storage Holders & Racks[2]
- Temperature Instruments[1]
- Comb[1]
- Other Toys & Hobbies[6]
- Other Toy Animal[1]
- Party Hats[2]
- Balloons[1]
- Hairbands[2]
- Feed Additives[6]
- Pharmaceutical[6]
- Food Additives[4]
- Organic Intermediate[1]
- Pet Food[6]
- Pet Health Care & Supplements[3]
- Other Pet Products[1]
- Other Oral Hygiene Products[3]
- Wireless Networking Equipment[6]
- Filters[6]
- Other Telecommunications Products[2]
- Other Passive Components[1]
- Pet Toys[1]
- Plant Extract[3]
- Healthcare Supplement[1]
- Dehumidifiers[1]
- Contact Person : Mr. Kang Jian
- Company Name : Ningbo Chin-Mo Import & Export Co., Ltd.
- Tel : 86-574-87138828
- Fax : 86-574-87130227
- Address : Zhejiang,Ningbo,No.346 Kexin Road,Yinzhou District Ningbo,315176 China
- Country/Region : China
- Zip : 315100
L-Cystine
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L-Cystine
Indications and UsageCystine 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 247-249 °C. It was discovered in 1810 by William Hyde Wollaston but was not recognized as being derived of proteins until it was isolated from the horn of a cow in 1899.[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.
Package25kg/drum, double layers plastic bags inside.
Storage SituationStored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
L-Cystine