Bromocresol ntsuab, dawb acid Cas: 76-60-8 Yellowish tan hmoov
| Catalog Number | xwm 90523 |
| Khoom npe | Bromocresol ntsuab, dawb acid |
| CAS | 76-60-8 ib |
| Molecular Formula | C21H14Br4O5S |
| Molecular Luj | 698.01 ib |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 293499 0 |
Khoom Specification
| Qhov tshwm sim | Yellowish tan hmoov |
| Assay | 99% |
| Poob rau ziab | <3.0% |
| Kev hloov pauv ntau (pH 3.8 - 5.4) | Yellowish Ntsuab - Xiav |
| Qhov siab tshaj plaws nqus dej wavelength A1 (pH3.8) | 438-443 nm |
| Qhov siab tshaj plaws nqus dej wavelength A2 (pH5.4) | 615-618 nm |
| Solubility (0.1% EtOH) | Clear Golden Yellow Solution |
Alperujo yog muab tshuaj txhuam tsim los ntawm ob-theem extraction system ntawm txiv roj roj.Qhov no ntub pomace yuav tsum tau muab khaws cia rau ob peb lub hlis thiab, nyob rau hauv lub sij hawm no, tsim ntawm 4-ethyphenol provokes ib tug muaj zog off-odor.Lub hom phiaj ntawm txoj haujlwm no yog txhawm rau txheeb xyuas cov kab mob uas muaj peev xwm tsim tau cov phenol tsis zoo no.Poj niam thiab cov kab mob kab mob tau raug cais tawm los ntawm khaws cia alperujo thiab kuaj lawv lub peev xwm los metabolize p-coumaric acid thiab daim ntawv 4-ethylphenol.Ntawm lawv, Lactobacillus pentosus yog cov kab mob uas ob qho tib si hauv nruab nrab hluavtaws thiab alperujo tau nce mus rau 4-ethylphenol tsim.Cov kab mob no tsis loj hlob hauv alperujo acidified rau pH 2, yog li lees paub tias acidification yog txoj hauv kev zoo tshaj plaws los tswj cov ntxhiab emissions thaum lub sij hawm alperujo cia.Lactic acid kab mob, tshwj xeeb tshaj yog Lactobacillus pentosus, tuaj yeem ua lub luag haujlwm rau kev tsim cov ntxhiab tsw los ntawm 4. -ethylphenol thaum lub sij hawm cia ntawm alperujo.Cov ntxhiab no tuaj yeem tiv thaiv los ntawm acidifying lub alperujo.
