The tale of the blue soy products – from contaminated soy milk to a new publication

A new paper is out from my lab. This one is a remarkable story of work by PhD Student Marina E. De León (

It started with her pouring out some soy milk from her fridge that was blue.

See her Tweet about this here:

And then she isolated bacteria from the soy milk and from some blue tofu in her fridge, identified them, did experiments to see if these isolated bacteria could cause soy milk to turn blue, found some that did, sequenced their genomes, and analyzed them to show that these ones had similar properties to other bacteria known to cause blue discoloration of food products. A truly remarkable piece of work.

See the paper here: “Draft Genome Sequences and Genomic Analysis for Pigment Production in Bacteria Isolated from Blue Discolored Soymilk and Tofu

And thanks to Guillaume Jospin and Harriet Wilson who helped with the work and all the people in my lab and via social media that encouraged and supported Marina along the way.

And see also:

Exit Seminar: Katherine Dahlhausen 8/27/19

Exit Seminar: Katherine Dahlhausen

PI: Dr. Jonathan Eisen


Koala Poop Smells Good

How I know this and ways to increase the impact of research through education & outreach


Tuesday, 27th of August

11:00 am – 12:00 pm

Genome and Biomedical Sciences Facility Auditorium (Room 1005)

Open to all ages

Article about Natascha Varona on her work on coral microbiomes and her blending of science and art

Nice article about Natascha Varona who is working in my lab with Raquel Peixoto on coral microbiomes.   The article discussed her science and her art and her blending the two of them in relation to coral bleaching.

See: Undergraduate Natascha Varona Blends Science and Art to Combat Coral Bleaching | College of Biological Sciences

And check out her amazing art.

Karley Lujan receives “Outstanding Senior Award” at UC Davis

Kudos to Karley Lujan, a UC Davis undergraduate who has been working in the lab for a few years. Last night she received one of the “Outstanding Senior Awards” at a ceremony at the UC Davis Convention Center.

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