As a cystic fibrosis sufferer, I'm concerned about the use of Burkholdria cepacia in organic farming. Do you know which produce items B. cepacia might be used for? -Jenny, AOL
For those of you who may not be familiar with this issue (Professor Produce wasn't familiar with it until he turned to his good buddy Google), Burkholderia cepacia is a beneficial bacterium that has found an agricultural niche for itself in fighting certain plant and soil borne diseases (rhizoctonia, fusarium, and pythium for those of you who simply must know). Moreover, it's naturally occuring, so organic farmers especially like B. cepacia because this wonder bug actually degrades chlorinated hydrocarbons and herbicides in farm soil and groundwater. Organic farming refers to this use of microbes in agriculture as "biocontrol."
Unfortunately, use of B. cepacia has a huge drawback, as Jenny from AOL points out. Cystic fibrosis sufferers are vulnerable to lung infections from B. cepacia - so vulnerable that the Cystic Fibrosis Foundation had to issue a statement in 2000 saying that folks infected with B. cepacia were not allowed to attend CFF functions for fear of spreading the bacteria to other cystic fibrosis sufferers. Scarier still is this microbe's strong resistance to antibiotics, making it a particularly deadly bacterium for that population.
But before anyone flies off the handle, please take note: There is considerable disagreement about how much of a threat using B. cepacia as biocontrol poses to vulnerable cystic fibrosis patients. Burkholderia cepacia is abundant in nature, with at least nine different species swimming in the Earth's topsoil. Because of this prevalence, it's been difficult for researchers to determine what a safe or dangerous amount might be for use in biocontrol. Just this year, the Environmental Protection Agency has launched a major assessment of B. cepacia's real effect on public health, placing a moratorium on any new significant uses for B. cepacia in the meanwhile.
The average shopper has absolutely nothing to fear from B. cepacia, but CF sufferers might want to take extra care in washing produce - particularly items like bell peppers, tomatoes, onions, and potatoes. The Cystic Fibrosis Foundation recommends washing hands (and, we can conclude, produce) for at least 15 seconds, and we here at The Prof Produce Institute for Clean Veggies always recommend a cap full of hydrogen peroxide in a quart of water for washing produce. We keep this mixture in a plastic bottle by the sink when we wash veggies for dinner.
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