Model: Food Grade

L-Cysteine Hydrochloride (Monohydrate/Anhydrous)

Brand: Huayang/Yuanda; 25 kg/drum

Food Additive Production License: SC20113118100048

Model: Food Grade, Industrial Grade, Feed Grade

Packaging: 25 kg cardboard drum (with polyethylene bag liner)

Purity: 99.9%

Origin: Domestic/Imported

CAS: 7048-04-6

Appearance: White crystals or crystalline powder

Application: Bread improver; nutritional supplement, antioxidant, color fixative

[Product Name] L-Cysteine Hydrochloride Monohydrate

[Synonyms] Cysteine monohydrate; L-2-Amino-3-mercaptopropionic acid hydrochloride monohydrate; L-Cysteine hydrochloride monohydrate

[Molecular Formula] C3H7NO2S·HCl·H2O

[Molecular Weight] 175.63

Category: Amino Acid Series

[Applications of L-Cysteine Hydrochloride Monohydrate] Bread improver; nutritional supplement, antioxidant, color fixative. Used as an additive in food, feed, cosmetics, and pharmaceuticals. As a bread improver, it promotes fermentation and prevents oxidation. In food, it serves as a rapid bread promoter to enhance the flavor of bread and other food products. In cosmetics, it is used in perm solutions, sunscreens, hair growth perfumes, and hair conditioners. As a nutritional supplement, antioxidant, and color fixative, it is added to natural juices to prevent vitamin C oxidation and discoloration.

Appearance: Colorless to white fine columnar crystals or white crystalline powder with a slight special odor and sour taste.

Applications: Flour treatment agent; nutritional supplement; antioxidant; color fixative; quality improvement agent; brewing and food manufacturing agent. Can be used as a bread fermentation promoter and preservative; accelerates gluten formation and prevents aging; added to natural juices to prevent oxidation and browning of vitamin C.

Usage Limits:

1. GB 172.320: Fermented flour products, 0.06 g/kg.

2. FDA, §172.320 (2000): As a nutritional supplement, it should account for 2.3% (by mass) of the total protein content in food.

3. FDA, §184.1272 (2000): 0.09% of the flour weight.

4. FEMA stipulates a limit of 100 mg/kg in beverages, baked goods, meat products, dairy products, condiments, and cereals.

5. Typical usage in bread is 20–45 mg/kg. In natural juices, usage can reach 200–800 mg/kg.

6. GB 2760-2011: Flavored ice, popsicles, jams (except canned), pickled vegetables, flavored syrups, vinegar, soy sauce, paste and sauce products, semi-solid compound condiments, liquid compound condiments (excluding 12.03, 12.04), fruit and vegetable juice (pulp) beverages (including fermented beverages), protein beverages, flavored beverages (including fruit-flavored, milk-flavored, tea-flavored, coffee-flavored, and other flavored beverages), tea, coffee, and plant-based beverages: 1.0 g/kg; preserved fruits: 0.5 g/kg; gum-based candies: 1.5 g/kg; other candies except gum-based candies, fruit wine: 0.8 g/kg; compound condiments: 0.6 g/kg; concentrated fruit juice (pulp) (only for industrial use): 2.0 g/kg; carbonated beverages: 0.2 g/kg; prepared alcoholic beverages (only for premixed drinks): 0.4 g/kg.

According to the "Standard for the Use of Food Additives" (GB 2760―2021): For fermented flour products, 0.06 g/kg. Usage in frozen rice and flour products ≤ 0.6 g/kg (calculated as L-cysteine hydrochloride). Also used in mayonnaise, milk, instant noodles, etc. Can also be used as a seasoning to improve flavor.

Quality Requirements: Quality Standards (FCC, IV)

Assay (after drying)/%: 98.0–101.5

Loss on drying/%: 8.0–12.0

Residue on ignition/%: ≤0.1

Specific rotation [α]20: +5.0° to +8.0°; [α]25: +4.9° to +7.9°

Arsenic (as As)/%: ≤0.0003

Heavy metals (as Pb)/%: ≤0.002

Lead/%: ≤0.0010

Iron/%: ≤0.001

[Product Storage] Store L-cysteine hydrochloride monohydrate in a dry, clean, and cool place. Shelf life: two years.