0102030405
D-Isoascorbic acid nwere uru nke Vc enwegh?
Okwu mmalite
D-isoascorbic acid b? eke, akw?kw? nd? akw?kw? nd? na nri antioxidant d? irè nke ukwuu, nke na-ar? ?r? d? ukwuu n'?kwalite nkw?si ike nke nri na ?gbat? oge nchekwa. D? ka isomer nke Vc, D-isoascorbic acid nwere ?t?t? myir?ta na chemical Njirimara na Vc, ma d? ka antioxidant, o nwere uru na Vc enwegh?. Nke mb?, nguzogide oxidation ya d? mma kar?a nke Vc. Ya mere, mgbe ejiri ya na VcChemicalbook, ? nwere ike ichekwa ngwa ngwa ?gw? nke Vc, ma nwee mmet?ta d? mma n'?kwalite ak?r?ngwa ?gw?, na-echebekwa ?cha Vc. Nke ab??, nchekwa d? elu, ? d?gh? ihe f?d?r? n'ime ah? mmad?, na ah? na-ekere òkè na metabolism mgbe ? ris?r? nri, nke nwere ike gbanwee ak?k? ya na Vc. N'ime af? nd? na-ad?begh? anya, etinyere ya na mbadamba Vc, mbadamba Vc Yinqiao na ngwaah?a ah?ike Vc d? ka ?d? ihe enyemaka maka ?gw?, wee nweta nsonaaz? d? mma.
nk?wa2
Ngwa & ?r?
Enwere ike iji acid erythorbic mee ihe d? ka nri na-egbochi oxidant; d? ka ihe inyeaka nke ?gw? ma ? b? ah?ike; d? ka stabilizer nke chemical ak?r?ngwa; d? ka ma e wez?ga oxygen, na mgbochi corrosion, na ma e wez?ga ?n? ?g?g? mgbaze nke d? mkpa ak?r?ngwa; d? ka electrolytes nke electrolytic na plating; d? ka ígwè micro-nt? nt? nke mmep?ta na ar? ígwè nke imeghar? ihe. Na mgbakwunye, a na-etinyekwa acid erythorbic na kem?kal? textiles n'ichep?ta kem?kal?, ihe ?l? na ?l? ?r? kem?kal? a na-eji kwa ?b?ch?.
Nk?wap?ta ngwaah?a
| Ihe | ?k?l?t? |
| Nk?wa | ?cha ma ? b? ntak?r? odo odo kristal ma ? b? nt? nt? |
| njirimara | Nke d? mma |
| Nyocha | 99.0 ~ 100.5% |
| ?nw? na ihicha | 0.4 max% |
| Nt?ghar? ak?wap?tara | -16.5° ~ -18° |
| Ihe f?d?r? na mgbanye | 0.3 max% |
| ?la d? ar? (d? ka Pb) (mg/kg) | 10 max |
| Ndu (mg/kg) | 2 max |
| Arsenic (mg/kg) | 3 max |
| Mercury (mg/kg) | 1 max |
| Oxalate | Gafere ule |