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fungi and soy sauce

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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fungi and soy sauce

Postby mslynnlynn » Wed Jul 06, 2005 7:43 am

i want to know the role of fungi (aspergillus oryzae and aspergillus sojae) in the production of soy sauce?
NOBODY knows aspergillus sojae?
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Postby victor » Fri Jul 08, 2005 8:38 am

I only know Aspergillus oryzae and never heard of A.sojae...
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Postby mothorc » Mon Jul 11, 2005 12:53 pm

there 're two genus for two kind of products.
they make the pH lower to get casein, and develope special smell
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Both are used to produce koji

Postby eluned » Tue Jul 12, 2005 11:12 pm

In 1944 Kinichiro Sakaguchi and Koichi Yamada discovered a new species of Aspergillus mold, which appeared widely in shoyu koji; they named it Aspergillus sojae.

Kikoman has a patented strain that is used for some of their soy sauce production.

Aspergillus oryzae is a general saprobe, feeding off of dead plant debris. It is found all over the world in numerous and diverse habitats. Aspergillus sojae is usually found around koji fermentation sites. It is also interesting to note that A. sojae is very closely related to the Aspirgillus that produce aflatoxin. Check pub med for more gory details.
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