Why cleaner air may be bad for your sourdough bread | Malay Mail

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CHICAGO, July 16 — Less acid rain is good for the environment, but potentially bad for bread, cereals and pasta. A decline in US power plant emissions over the last 30 years means the air has less sulphur, a crucial nutrient for wheat and many other crops that researchers are now working to...

A first-attempt at a homemade seeded sourdough loaf is seen on a kitchen table in London, Britain April 3, 2020. — Reuters pic

For decades sulphur seeped into the soil via acid rain, a toxic precipitation that is harmful to human health but helped crops and made for tastier bread. European farmers have been applying sulphur for years, after research in the mid-2000s showed sulphur-deficient wheat when combined with other ingredients in baking can form acrylamide, a chemical linked to cancer.

“The sulphur application is usually not cost-prohibitive, but because of the way the markets are going right now, any amount of increased cost is going to be scrutinized,” said Ron Olson, an agronomist with The Sulphur Institute. “It will have an effect, although it will be hard to measure,” said Jim Camberato, a soil scientist with Purdue University.

Farmers in the Plains and elsewhere withdraw sulphur from the soil each year by harvesting crops, while deposits from the air have also declined. Since about the year 2000, Kansas has been running a sulphur deficit, Lollato said. Similar deficits can affect rapeseed, alfalfa, corn and soybeans.

 

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