L-Cystine | Wuhan Golden Wing Industry & Trade Co., Ltd | L-Cystine appears as white crystals or a crystalline powder and is tasteless. This product is an additive used in food products that promotes oxide and the reductive ability of human cells. L-Cystine has a specific rotation between -218°~ -224° and a PH...view more L-Cystine appears as white crystals or a crystalline powder and is tasteless. This product is an additive used in food products that promotes oxide and the reductive ability of human cells. L-Cystine has a specific rotation between -218°~ -224° and a PH value between 5-6.5. view less |