L-Histidine, hydrochloride Cas: 645-35-2 White lulú
| Nọmba katalogi | XD90300 |
| Orukọ ọja | L-Histidine, hydrochloride |
| CAS | 645-35-2 |
| Ilana molikula | C6H9N3O2.HCl |
| Òṣuwọn Molikula | 191.6155 |
| Awọn alaye ipamọ | Ibaramu |
| Ti irẹpọ Owo idiyele koodu | 29332990 |
Ọja Specification
| Ayẹwo | 99% |
| Ifarahan | Funfun lulú / kirisita / abẹrẹ |
Ero ti iwadii yii ni ijuwe jiini ati igbelewọn ailewu ti awọn ipinya 129 Enterococcus ti o gba lati ọti-waini ti o ngba bakteria malolactic.Isọdi-jiini nipasẹ DNA-PCR polymorphic ti a sọkun laileto ṣe afihan awọn genotypes 23.25 ti o ya sọtọ aṣoju ti gbogbo awọn genotypes ni a mọ bi Enterococcus faecium nipasẹ PCR pato-ẹya ati ti a ṣe ayẹwo fun resistance aporo, niwaju awọn jiini virulence ati agbara aminobiogenic, mejeeji ni decarboxylase alabọde ati ọti-waini.Agbara aminobiogenic ninu ọti-waini ni a ṣe atupale niwaju (ayẹwo 1) ati isansa (ayẹwo 2) ti Oenococcus oeni CECT 7621. Resistance to tetracycline, cotrimoxazol, vancomycin ati teicoplanin ni a ṣe afihan nipasẹ 96% ti awọn igara, ṣugbọn ko si ọkan ninu wọn ti o ni idawọle idawọle naa. virulence Jiini.Gbogbo awọn igara naa ni jiini tyrosine decarboxylase (tdc), lakoko ti 44% jẹ rere fun tyramine ni alabọde decarboxylase.Nikan marun ninu awọn igara 25 ye ninu ọti-waini lẹhin ọjọ meje ti abeabo, ati nigbati awọn iṣeduro ti awọn amines biogenic ninu ọti-waini ti pinnu nipasẹ HPLC, nikan awọn ọti-waini ninu eyiti awọn igara iyokù marun ti o wa ninu awọn amines biogenic.Histamine, putrescine ati cadaverine ni a rii ni awọn ọti-waini lati awọn idanwo mejeeji, botilẹjẹpe awọn ifọkansi ti ga julọ ni assay 2. Tiramine ati phenylethylamine ni a rii nikan ni isansa O. oeni.Iwadi yii ṣe alabapin fun imọ ti awọn aaye aabo ti enterococci ti o ni ibatan si ṣiṣe ọti-waini.
