반응 #891

반응 방정식

magnesium sulfate

DL-lysine monohydrochloride

ammonium sulfate

hydrochloric acid

potassium dihydrogen phosphate

→

D-lysine monohydrochloride

반응 조건

후처리

1. 1
   기타Into a shaking flask having
2. 2
   workup.ADDITIONa volume of 500 ml was charged 100 ml of a medium (pH 7.0)
3. 3
   추출extract
4. 4
   workup.WAITcultured at 30° C. for 168 hours
5. 5
   기타The cell was removed
6. 6
   기타to obtain a supernatant
7. 7
   기타to remove protein and others, whereby a filtrate
8. 8
   기타was obtained
9. 9
   workup.ADDITIONAfter activated carbon was added to the filtrate
10. 10
    농축the filtrate was concentrated under reduced pressure, and 200 ml of ethanol
11. 11
    workup.ADDITIONwas added to 20 g of the
12. 12
    농축concentrate

실험 절차

Into a shaking flask having a volume of 500 ml was charged 100 ml of a medium (pH 7.0) comprising 2% of DL-lysine monohydrochloride, 0.2% of ammonium sulfate, 0.1% of potassium dihydrogen phosphate, 0.05% of magnesium sulfate and 0.02% of a yeast extract, and the medium was sterilized at 120° C. for 10 minutes. A loopful of Yarrowia lipolytica IFO 1209 was inoculated into the medium, and cultured at 30° C. for 168 hours with shaking. The cell was removed by centrifuging 1000 ml of the above culture broth to obtain a supernatant. After the supernatant was adjusted to have pH 6.0 with hydrochloric acid, ultrafiltration was carried out in order to remove protein and others, whereby a filtrate was obtained. After activated carbon was added to the filtrate to effect decolorization, the filtrate was concentrated under reduced pressure, and 200 ml of ethanol was added to 20 g of the concentrate to obtain 5.8 g of D-lysine monohydrochloride as crude crystals. 5.8 ml of water was added to the crude crystals, and the crude crystals were dissolved by heating, and then recrystallized by cooling to obtain 2.9 g of crystals of D-lysine monohydrochloride.

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