Betekenis van:
freeze-drying
freeze-drying
Zelfstandig naamwoord
- a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes
Synoniemen
Hyperoniemen
Voorbeeldzinnen
- After freeze-drying it is finely ground to produce a homogeneous powder.
- Since cell viability is affected during freeze-drying, these are not suitable as standard controls for isolation or bioassay tests.
- Steam sterilisable freeze drying equipment with a condenser capacity exceeding 10 kg of ice in 24 hours and less than 1000 kg of ice in 24 hours;
- Steam sterilisable freeze drying equipment with a condenser capacity exceeding 10 kg of ice in 24 hours and less than 1000 kg of ice in 24 hours;
- For the preparation of the 1 % standard add 5,00 ml of bovine skimmed milk to a 495 ml of buffalos’ skimmed milk in a 1 l beaker, adjust the pH to 6,4 by the addition of dilute lactic acid (10 % w/v). Adjust the temperature to 35 °C and add 100 μl of calf rennet (rennet activity 1: 10000, c. 3000 U/ml), stir for 1 minute and then leave the beaker covered with an aluminium foil at 35 °C for one hour to allow formation of the curd. After the curd has formed, the whole renneted milk is freeze-dried without prior homogenization or draining of the whey. After freeze-drying it is finely ground to produce a homogeneous powder.