Cheese.
To make cheese, milk must be curdled until it is reaches a thick, fluid consistency. In the production of hard cheeses, this first step is triggered by the enzyme chymosin. Chymosin is added to milk and breaks down milk proteins causing them to clump together and separate from the watery whey. Traditionally, this enzyme preparation, sometimes known as rennin, was extracted from frozen calf stomachs. The active ingredient is chymosin, an enzyme produced in the stomach of suckling calves needed for breaking down cow’s milk. It is now possible to produce chymosin in genetically modified fungi. These modified microorganisms contain the gene derived from the stomach of calves that is responsible for producing chymosin.

When grown in a bioreactor, they release chymosin into the culture medium. Afterwards, the enzyme is extracted and purified yielding a product that is 80 to 90 percent pure. Natural rennin contains only 4 to 8 percent active enzyme. Chymosin produced by genetically engineered microorganisms is now used to produce cheese in many different countries. Various milk products may contain additives that are often produced by genetically modified microorganisms. For example beta-carotene coloring (E 160a) used as a yellow dye in butter during the winter - also used in some dairy desserts and yogurt, riboflavin coloring (E 101: Vitamin B2); used in cheeses and cream products, preservatives: Natamycin (E 235), Nisin (E 234), Lysozyme (E 1105); approved for use in cheeses. Dairy desserts, creams, and puddings sometimes contain emulsifiers and thickeners made from GM soybeans or GM maize.

	Enter your search terms Submit search form
	Web www.gmo-watch.com

The information contained in these pages have been gathered from numerous sources, official
and unofficial, over a period of time. We believe the information is as correct today, as is was at
the time of writing. However, since science in this field is developing quickly, some of it may have
become obsolete. Should you find any such passages, we would be grateful if you would bring it
to our attention. You'll find our contact details on the contact page. Furthermore, all content in
these pages, including the general "look and feel" of the site are the property of Smart Stuff HB
except where other copyrights may apply. All rights reserved. Any unauthorized copying, re-
publishing or printing for other purposes than personal reference is prohibited. By using the
GMO Watch website you agree not to hold GMO Watch, Smart Stuff HB or any of its publishers,
shareholders, principals or employees responsible for any loss, injury or discomfort resulting
from reading these pages or contacting and entering into business with any of its advertisers.
Normal business caution and common sense is advised. GMO Watch is part of Smart Stuff HB, a
Swedish registered company. Registration number 969713-6100. GMO Watch. Version 1.o.
© 2007-2008 Smart Stuff HB. Thank you.