1. Soon, chocolate to get
healthier and tastier
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2. Contd..
Researchers have found a way to make chocolate more flavourful and
nutritious with greater levels of anti-oxidants. Chocolate is known to have
health benefits. It can potentially lower blood pressure and cholesterol and
reduce stroke risk.
Cocoa undergoes several steps before it takes shape as a candy bar. Workers
cut down pods from cocoa trees, then split open the pods to remove the
white or purple cocoa beans.
They are fermented in banana lined baskets for a few days and then set out
to dry in the sun. Roasting, the next step, brings out the flavour.
But some of the healthful polyphenols (antioxidants) are lost during the
roasting process, so the researchers wanted to figure out a way to retain as
much of the polyphenols and good flavours as possible.
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3. Contd..
âWe decided to add a pod-storage step before the beans were even fermented to see
whether that would have an effect on the polyphenol content,â said Emmanuel Ohene
Afoakwa at the University of Ghana.
âThis is not traditionally done, and this is what makes our research fundamentally
different. It's also not known how roasting affects polyphenol content,â Afoakwa said.
Afoakwa's team divided 300 pods into four groups that were either not stored at all or
stored for three, seven or 10 days before processing.
This technique is called `pulp preconditioning'. After each storage period passed,
fermentation and drying were done as usual. He said that the seven-day storage resulted in
the highest antioxidant activity after roasting. To assess the effects of roasting, the
researchers took samples from each of the storage groups and roasted them at the same
temperature for different times. The current process is to roast the beans for 10-20
minutes at 120-130 degrees Celsius. Afoakwa's team adjusted this to 45 minutes at 116
degrees Celsius and discovered this slower roasting at a lower temperature increased the
antioxidant activity compared to beans roasted with conventional method.
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because of lack and improper healthcare facilities in India. We
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