Extreme weather conditions are threatening the future of cocoa plantations worldwide, posing a serious risk to the global chocolate industry. Scientists are therefore exploring alternative, climate-resilient crops that could be used to create new confectionery products.
Around
60 percent of the world’s cocoa production comes from West Africa, particularly
from humid countries such as Ivory Coast and Ghana, where warm temperatures and
heavy rainfall alternate with short dry periods, according to Euronews.
However, over the past two years cocoa production has dropped by as much as 40
percent. As a result, chocolate prices have surged to levels not seen since the
1970s, and experts warn that a world without cocoa could become a reality as
early as 2050.
Several
factors point to the possible disappearance of chocolate. Earlier reports cited
illegal gold mining, aging cocoa trees and even smuggling as key causes, but
recent research shows that the main culprit is the increasingly sharp contrast
between extreme weather conditions, particularly intense rainfall.
The
Salata Institute for Climate and Sustainability at Harvard University notes
that cocoa’s sensitivity to weather is not new, but climate change is
“intensifying heavy rainfall” as global temperatures rise, reports Euronews.
For every one-degree Celsius increase in air temperature, the atmosphere can
hold about seven percent more moisture, leading to heavier and more intense
rainfall.
“The
basic physics is simple: a warmer atmosphere holds more moisture, which
amplifies extreme precipitation. This leads to waterlogging of the soil,
erosion and conditions favorable for the development of fungal diseases,”
researchers explain.
Driven by this climate-induced collapse, scientists at the National University of Singapore have begun searching for solutions.
Their research has focused on
carob, a climate-resilient plant traditionally grown in the Mediterranean
region, which is gradually gaining attention as a potential alternative to
cocoa.
Unlike
cocoa, carob thrives in hot and dry conditions and requires very little water.
When roasted, it releases a unique aroma reminiscent of cocoa, although its
taste does not fully match it. To overcome this challenge, the research team
developed two techniques to modify the flavor of carob, using enzymes to
enhance bitterness and sweetness.
The
enzymatic treatment is described as a simple and clean method requiring minimal
processing, unlike other approaches that involve aggressive chemicals, such as
hydrochloric acid, to improve taste.
By
enhancing the aromatic profile of carob, researchers believe they could
encourage confectionery manufacturers to use it in products that traditionally
rely on cocoa, including chocolate bars, cocoa powders, sweet beverages and
other cocoa-based products.