However, the early Edam cheese drying room located at the top of the building remains mostly intact, along with a timber cheese elevator for transporting the cheeses up and down and an early and highly decorative cast iron spiral staircase used to access this room from the pasteurisation room below.
42.
Prepackaged fresh pasta must have a water content not less than 24 %, must be stored refrigerated at a temperature of not more than 4 �C ( with a 2 �C tolerance ), must have undergone a heat treatment at least equivalent to pasteurisation, and must be sold within 5 days of the date of manufacture.
43.
Generically, this type of product is known as Extended Lifespan ( ESL ) milk . ( The milk is not ultra pasteurised, and therefore cannot be stored for very long periods at room temperature like ultra pasteurised UHT milk, but the lack of ultra pasteurisation is claimed to have less impact on the flavour of the product .)
44.
Throughout its history, a sizeable number of ENS alumni, some of them known as " normaliens ", have become notable in many varied fields, both academic and otherwise, ranging from Louis Pasteur, the chemist and microbiologist famed for inventing pasteurisation, to philologist Georges Dum�zil, novelist Julien Gracq and socialist Prime Minister L�on Blum.
45.
Liu used well hydrated dogs undergoing a mannitol diuresis and stored the kidneys at 9 �C 10 �C using a perfusate derived from human PPF . The PPF was further fractionated by using a highly water-soluble polymer ( Pluronic F-38 ), and sodium acetyl tryptophanate and sodium caprylate were added to the PPF as stabilisers to permit pasteurisation.
46.
To prevent the food from being spoiled before and during containment, a number of methods are used : pasteurisation, boiling ( and other applications of high temperature over a period of time ), refrigeration, freezing, drying, vacuum treatment, antimicrobial agents that are natural to the recipe of the foods being preserved, a sufficient dose of ionizing radiation, submersion in a strong saline solution, acid, base, osmotically extreme ( for example very sugary ) or other microbially-challenging environments.
47.
The recovered purified material is formulated with combinations of sodium octanoate and sodium N-acetyl tryptophanate and then subjected to viral inactivation procedures, including pasteurisation at 60 �C . This is a more efficient alternative than the Cohn process for four main reasons : 1 ) smooth automation and a relatively inexpensive plant was needed, 2 ) easier to sterilize equipment and maintain a good manufacturing environment, 3 ) chromatographic processes are less damaging to the albumin protein, and 4 ) a more successful albumin end result can be achieved.
