L-Cysteine 99% | 52-90-4
Hōʻike huahana:
L-cysteine, he amino acid i loaʻa mau i nā mea ola. ʻO ia kekahi o nā ʻakika α-amino i loko o ka sulfur. Huli ia i ka poni (ka waihoʻoluʻu ma muli o SH) i mua o ka nitroprusside. Aia ia i loko o nā protein a me ka glutathione. Hiki iā ia ke hana i nā mea hoʻoheheʻe ʻole me nā ion metala e like me Ag+, Hg+, a me Cu+. mercaptide. ʻO ia hoʻi, RS-M', RSM"-SR (M', M" he mau metala monovalent a me divalent.
ʻO ke kumu molekala C3H7NO2S, ke kaumaha molekala 121.16. Nā kristal kala ʻole. Hiki ke hoʻoheheʻe ʻia i ka wai, ka waikawa acetic a me ka amonia, hiki ʻole ke hoʻoheheʻe ʻia i ka etera, acetone, ethyl acetate, benzene, carbon disulfide a me ka carbon tetrachloride. Hiki ke hoʻoheheʻe ʻia i cystine e ka ea i loko o nā haʻina alkaline kūʻokoʻa a nāwaliwali.
ʻO ka maikaʻi o L-Cysteine 99%:
1. Hoʻohana nui ʻia i ka lāʻau lapaʻau, nā mea hoʻonaninani, ka noiʻi biochemical, etc.
2. Hoʻohana ʻia ia i ka berena e hoʻoikaika i ka hoʻokumu ʻana o ka gluten, hoʻoikaika i ka fermentation, hoʻokuʻu ʻia, a pale i ka ʻelemakule.
3. Hoʻohana ʻia i loko o nā wai maoli e pale ai i ka hoʻomake ʻana o ka huaora C a pale i ka wai mai ka browning. He hopena detoxification kēia huahana a hiki ke hoʻohana ʻia no ka make ʻana o ka acrylonitrile a me ka ʻawaʻawa ʻala.
4. ʻO kēia huahana pū kekahi i ka hopena o ka pale ʻana i ka pōʻino o ka radiation i ke kino o ke kanaka, a he lāʻau hoʻi ia no ka mālama ʻana i ka bronchitis, ʻoi aku ka nui o ka lāʻau lapaʻau hoʻomaha phlegm (hoʻohana nui ʻia ma ke ʻano o ka acetyl L-cysteine methyl ester. Cosmetics Hoʻohana nui ʻia no ka wai nani, perm lotion, sunscreen cream, etc.
Nā hōʻailona ʻenehana o L-Cysteine 99%:
| Mea Hoʻomāliʻi | Hōʻike |
| Ka nana aku | ʻO ka pauka kristal keʻokeʻo a i ʻole ka pauka crystalline |
| ʻIkepili | Infrared absorption spectrum |
| Hoʻololi kikoʻī[a]D20° | +8.3°~+9.5° |
| Kūlana o ka hoʻonā | ≥95.0% |
| Ammonium (NH4) | ≤0.02% |
| Klorida (Cl) | ≤0.1% |
| Sulfat (SO4) | ≤0.030% |
| Hao (Fe) | ≤10ppm |
| Nā metala kaumaha (Pb) | ≤10ppm |
| Arsenic | ≤1ppm |
| Pohō ma ka maloʻo | ≤0.5% |
| Ke koena ma ka ʻā | ≤0.1% |
| Hoʻāʻo | 98.0~101.0% |
| PH | 4.5~5.5 |
