Strange protein trub with rice adjunct american pale lager

[Samuelouellette]

Today I brewed an American pale lager with 75% american 2-row and 25% Mash ready Toasted rice flakes (Gilbertson & Page Gilbertson http://gilbertsonandpage.com/products/adjuncts/)

I did a multistep mash 30min@ 122F 90min@140F and 30min@ 158F

I noticed during the mash in that the wort had a milky white appearance. I proceeded to do a 90 min boil and noticed clumps floating, I skimmed some of it.

I added a whirlfloc tablet @15min. Then I cooled the wort in a ice bath and transferred it in the fermenter with a funnel with a filter.

Then I saw this (the white/green clumps). It is the first time I see this. Could it be the protein in the rice?

 

[Samuelouellette]

The picture was taken right after the transfer and no yeast was pitched. (I pitched 2 hours later @ 44F with Danish lager 2042)

 

[Chadwick]

More evidence for why I refuse to use rice in my beers.

 

[Samuelouellette]

I found this thread and it seems to be the same thing https://www.homebrewtalk.com/f39/whats-floating-my-wort-458415/

But my gosh I hope it settle down so I don't lose a gallon from the trub.