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mercoledì 8 luglio 2009

Il Manuale della Giovane Biotecnologa


CAPITOLO 1.

Dagli appunti scarabbochiati sui guanti in nitrile:

Se si rimane chiusi in lab senza cibo:

Prendere una beaker aggiugnerci 25% w/v di latte in polvere.
Porre il beaker sull'agitatore magnetico riscaldando. Agitando ad una velocita' di 2-3 e riscaldando ad una temperatura di c.a. 80-90°C.
Aggiungere 2-5% w/v di acido citrico*
Con un cell strainer raccogliere i fiocchi che si formano e ponendoli in un petri dish.
Optional: aggiungere dell'NaCl (q.b.) soppure saccarosio (o fruttosio in caso di versione dietetica)

Lasciare raffreddare e una volta che ha raggiunto R.T. riporre in camera fredda!

Ed ecco la ricotta fatta in lab!!!

*potete anche farvi una soluzione 3M di a. citrico e poi aggiungere a goccia a goccia finche non si inziano a formare i grumi/fiocchi

Glossario di termini laboratoriosi:
w/v - peso su volume
cell strainer -







Petri dish -





R.T. - Temperatura Ambiente

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