Bioengineered Yeast

Discussion in 'Beer Talk' started by pweis909, Sep 13, 2019.

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  1. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    On that we are in agreement.

    Cheers!
     
  2. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    Another possible selling point for the yeast is that lactobacillus has greater metabolic competency than yeast, extending beyond the simple sugars. Over time, an infection could mean continued, slow fermentation (driving pH drop) that you shouldn't see in the yeast. Assuming they don't put their lacto gene in a diastaticus strain. But I'm shooting from the hip. I have about a dozen beer fermentations with lacto under my belt and zero fermentations with a the Sourvisiae. You said it didn't live up to the super sour warning. Maybe this is why.
     
  3. hopfenunmaltz

    hopfenunmaltz Pooh-Bah (2,635) Jun 8, 2005 Michigan
    Pooh-Bah

    Others said it was, I was warned ahead of time so I was expecting more sourness.
     
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  4. unlikelyspiderperson

    unlikelyspiderperson Grand Pooh-Bah (3,966) Mar 12, 2013 California
    Pooh-Bah Trader

    I think the difference is that the insulin is the byproduct of a GMO that is then isolated and the GM organism itself isn't ingested. I think an ethanol product distilled from fermentation with GM yeast would be more analogous to the insulin. Perhaps professional grade filtration removes all of the yeast bodies, I am under the impression that there is always some yeast bodies left in the finished beer that we ingest when we drink it.
    I don't personally feel comfortable ingesting these organisms because I haven't seen any long term exposure studies (with things like corn and beer I expect to consume them regularly for decades to come). With something like insulin I would have a much higher risk tolerance then with something like food or beer. It's a shame we won't all be given the choice and instead will have to rely on voluntary certification programs to verify brands that don't use this if it's approved
     
  5. billandsuz

    billandsuz Pooh-Bah (2,097) Sep 1, 2004 New York
    Pooh-Bah

    Funny you should use that as an example.

    My endocrinologist is no fan. I inject twice a day.
    Insulin has been around for decades. cheap. reliable. easy to get.
    Not every patient needs bio engineered insulin. but if you need insulin youll be getting what they are making, no choice.

    and you'll pay a hundred times more for it. for a product that is basically the same as the stuff they were making in 1950. up to $600 for a box of 5 pens... vs. a few dollars for "old" insulin.
     
  6. MNAle

    MNAle Initiate (0) Sep 6, 2011 Minnesota

    "Fifteen years ago, a patient with diabetes might have paid $175.57 for a 20-milliliter vial of the long-acting insulin Humulin R U-500.

    Today, he’d shell out $1,487 for the same tiny vial, according to wholesale acquisition cost data from Elsevier’s Gold Standard Drug Database."


    ‘Everyone is at fault’: With insulin prices skyrocketing, there’s plenty of blame to go around


    (You need to register to read the whole article...)
     
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  7. osseo222000

    osseo222000 Zealot (665) Jan 26, 2016 California
    Trader

    I think you are confusing engineered insulin (human insulin with a few mutations, ie. lispro or aspart) and insulin produced using engineered organisms (ie. biotechnology). Literally all pharmaceutical insulin is produced from engineered organisms (yeast or e.coli). In the 1950s you’d be getting insulin from a pig pancreas most likely, and had all kinds of safety issues due to the fact it was a different protein and purity was crap. Thankfully we can now make actual human insulin in engineered organisms, which is much safer. Insulin pricing is definitely crazy though...
     
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  8. osseo222000

    osseo222000 Zealot (665) Jan 26, 2016 California
    Trader

  9. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    And probably a lot more.
    This, not the various concerns over Frankensteinian chimeras, is where GMOs have earned their bad rap. In big pharma and ag, profits are more important than people. That’s not the technology’s fault, that’s on society.
     
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  10. Ranbot

    Ranbot Pooh-Bah (2,463) Nov 27, 2006 Pennsylvania
    Pooh-Bah

    First off, let me say this about the GMO beer yeast in the original article. There are already so many natural ways to sour a beer that I don't see the purpose in engineering yet another sour beer yeast. It doesn't appear the flavors are significantly different or better than what is readily available. It can stay in the lab for all I care. This is at best a baby step towards creating new brewing yeasts that impart flavors that are truly unique/special; call me when that happens.

    Ethanol is the most popular beer yeast by-product, but far from the only by-product, otherwise there would be only one brewer's yeast, not thousands to choose from.

    Individuals are not toxicologists who can understand this science nor should they be expected to. Society has to rely on the opinions of experts, just as they do for finance, medicine, construction, car repairs, computing technology, farming, police, lawyers, etc. Experts can make mistakes, of course, but choices of the untrained aren't much better than blind stabs in the dark, mostly chance. I clean up industrial pollutants in the environment for my job, and while I am not a toxicologist I do understand toxicology more than the average person. I witness how ignorance and fear of the unknown drive many people to spend inordinate time, energy, and stress over chemicals that are far less dangerous to them than a myriad of common risks they deal with every day. For example the incredibly well-documented poison in our beloved fermented drinks, ethanol, is far more dangerous to us than a great many potential risks some fret over. In extreme cases people are too preoccupied with fear of unknowns to observe or act on the real dangers around them. Addressing public fear also costs money and sometimes even stops good science from moving forward, which GMO has been a victim of.

    Comparing medical costs from 1950 to 2019 is bonkers. There are far too many factors involved to make sense of it.

    The claim that insulin was easy to get pre-1970 is wrong. There was/is a realistic upper limit to how many pig and cow pancreases could be reliably obtained, the supply was prone disruptions, there were shortages, the quality was poor- sometimes even dangerous, vast regions of the world had no access to any insulin at all, and people died. Thus the original need for science to find a more reliable source of insulin for everyone in the world.
     
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  11. billandsuz

    billandsuz Pooh-Bah (2,097) Sep 1, 2004 New York
    Pooh-Bah

    Yes indeed.
    You make my point quite well. Thank you.

    The debate is much broader than simply accepting plant gene manipulation is typically benign.

    So why has this solution that was available for many years, the same medicine that cost $40 or $50 in 2000 now costing $1,000? Or in my case $600? For that matter why the F would one person be paying 10x more than the next patient? For a medicine that was approved in 1980? Seems random. It's rhetorical.

    People can't afford the bio-engineered solutions and they are literally dying as a result. Right here in America. That is a fact. I don't have a problem with GMO yeast, or bio engineered insulin. Until they ask $200 for the new bio-engineered US-05. Then we got a problem.


    Cheers
     
    #51 billandsuz, Sep 17, 2019
    Last edited: Sep 17, 2019
  12. billandsuz

    billandsuz Pooh-Bah (2,097) Sep 1, 2004 New York
    Pooh-Bah

    Alert.
    I am an Environmental Scientist, have been for many many years. And not a toxicologist either.
    So please do not assume that the GP is ill-informed. Everyone really does get to decide, we really do get to form an opinion. We can distinguish between honest science and corporate trickery. We are aware that ethanol is toxic. Toxicity is measured in dosage. There is little point.

    What they say in poker is true. If you think you're the smartest guy in the room, you are the mark.

    Cheers.
     
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  13. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    At least as as a home brewer with no commercial stake in the fortunes of my brewery, I agree that access to other souring agents probably reduces the value of this particular gmo to me. I’d like to hear more about how this might be better received by those with a bigger stake, e.g, a commercial interest.

    I also agree this seems like a baby step. The Lallemand article suggested others are on the way. What might they be? What would sort of engineering effort would you like to see as a bigger step?
     
  14. MNAle

    MNAle Initiate (0) Sep 6, 2011 Minnesota

    My observation is, no the general public cannot distinguish honest science from trickery (and not all "scientific" trickery is corporate). FUD driven by anecdotes and advocacy groups is a much greater influence than you acknowledge.
     
  15. Ranbot

    Ranbot Pooh-Bah (2,463) Nov 27, 2006 Pennsylvania
    Pooh-Bah

    Well there was a report shared here some time ago about a yeast imparting a hop-like bitterness. I think that's interesting, if only because it adds another tool to the brewer's toolbox, but it's possible it could be more consistent than natural hops, which vary based on seasons, field locations, disease, drying or pelletization methods, freshness, storage conditions, etc. Some other things I could imagine yeasts doing that could be interesting are:
    • unique flavors we can't easily impart to beer now
    • zero or less chance of creating unwanted off-flavors (or more of them, if desired for specific styles)
    • fermentation with less alcohol but still have full flavor, mouthfeel, etc.
    • fermentation that generates less CO2
    • more efficient/faster/less expensive brewing without sacrificing flavor
    • specialized yeasts for brewing off second-runnings that can wring more out of the malts (i.e. make more beer with less raw material).
    • Add beneficial vitamins and minerals
    Another thing I can imagine that wouldn't directly impact beer on the market is yeasts that can efficiently/cheaply clean organic material from a brewery's waste-water on site before discharging to municipal sewage treatment plants. Brewery waste water is generally very high in nutrients that can be difficult for many municipal water treatment facilities. We've seen articles about that here before.
     
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  16. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    One potential advantage of this gmo that I overlooked is that since there is some trade-off between lacto and hops, maybe a souring yeast creates some work-arounds
     
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  17. hopfenunmaltz

    hopfenunmaltz Pooh-Bah (2,635) Jun 8, 2005 Michigan
    Pooh-Bah

    Not bitterness, this yeast produced the aroma compounds linalool and geraniol, some of the oils that give hoppy aromas.

    https://www.nature.com/articles/s41467-018-03293-x
     
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