I've been reading how some molds may be carcinogenic. In particular, molds associated with the fungus metabolite, Aflatoxin.

Are the types of mold that produce this toxin, present in buildings/showers/domestic environments, or do they only grow on food-stuffs?

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    $\begingroup$ I've made a few linguistic changes. Also fungus is singular, fungi plural. Correct this in answer too. $\endgroup$ – David Dec 28 '16 at 16:10

Strictly speaking the common bread mould Rhizopus sp. does not produce aflatoxin. The fungus Aspergillus flavus which belongs to the class Ascomycetes secretes aflatoxin. It attacks cereal grains , legumes, tree nuts. The fungi are green in colour and 'mould' like in appearance. The fungus attacks the food stuffs and storage grains. So under favourable conditions it may grow in your store room if it finds food for its growth. Also Aspergillus can grow at temperatures as high as 48°C and even at low temperatures like 5-8°C.

Edit: On being asked for sources I include some which strongly support my claim 1. For suitable conditions of growth of the fungi visit https://en.m.wikipedia.org/wiki/Aspergillus_flavus and read under the Environment heading. 2. Visit https://bioweb.uwlax.edu/bio203/s2013/ernst_ale2/habitat.htm and read from " Aspergillus flavus is omnipresent " upto " Aspergillus may also grow on or inside walls in homes, especially if the house is damp or has been damaged by flooding. " 3.https://www.moldbacteria.com/mold-types.html this site provides a list of different fungi found in our homes. Here you can find Aspergillus flavus to grow in flower pot soil. Moreover other species of Aspergillus are found in kitchens and bathrooms.

  • $\begingroup$ So it is impossible for it to grow on walls? $\endgroup$ – user1 Dec 29 '16 at 6:29
  • $\begingroup$ I presume it cannot grow directly on walls unless it gets nutrition and moisture for its growth. Now if there is a damp wall the fundi may find some organic matter and may grow on it. $\endgroup$ – jyoti proy Dec 29 '16 at 6:50
  • $\begingroup$ Sorry in the third line it is fungi $\endgroup$ – jyoti proy Dec 29 '16 at 6:52
  • $\begingroup$ Including reliable citations within your answer to back-up your claims, is essential. Please consider adding the sources of the information you used, into your answer, as soon as you're able to. Thank you :) $\endgroup$ – user19679 Dec 29 '16 at 7:29
  • $\begingroup$ For suitable conditions for the growth of the fungi see en.m.wikipedia.org/wiki/Aspergillus_flavus and read under the Environment heading, next visit bioweb.uwlax.edu/bio203/s2013/ernst_ale2/habitat.htm and read from " Aspergillus flavus is omnipresent..... " upto "Aspergillus may also grow on or inside walls in homes, especially if the house is damp or has been damaged by flooding. " $\endgroup$ – jyoti proy Dec 29 '16 at 8:05

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