Cockroach Milk Proteins Fantastic Food Supplement

Posted: Jul 18 2016, 9:04am CDT | by , in News | Latest Science News


Cockroach Milk Proteins Fantastic Food Supplement
Credit: UMassAmherst

The sight of cockroaches may evoke disgust but they can be a boon for human health, said a team of scientists who have shown that milk protein crystals found in roaches can serve as a "fantastic" protein supplement.

The team of scientists, including those from the Institute for Stem Cell Biology and Regenerative Medicine (inStem) in Bengaluru, has recently unravelled the structure of milk proteins crystals in the guts of a roach species called Diploptera punctata (Pacific Beetle Cockroach), the only known viviparous cockroach (which gives birth to live young).

A single crystal is estimated to contain more than three times the energy of an equivalent mass of dairy (buffalo) milk, according to the study by inStem's Ramaswamy group.

"The crystals are like a complete food -- they have proteins, fats and sugars. If you look into the protein sequences, they have all the essential amino acids," said Sanchari Banerjee, one of the main authors of the paper published in July in the journal from the International Union of Crystallography.

Now, armed with the gene sequences for these milk proteins, Ramaswamy and colleagues plan to use a yeast system to produce these crystals en masse.

"They're very stable. They can be a fantastic protein supplement," said Ramaswamy.

Furthermore, their crystalline nature offers a unique advantage. As the protein in the solution is used up, by being digested, the crystal releases protein at an equivalent rate.

"It's time-released food," explained Ramaswamy, adding "if you need food that is calorifically high, that is time released and food that is complete. This is it".

Besides their utility as supplemental food, the scaffolding in the protein crystals exhibit characteristics that could be used to design nanoparticles for drug delivery.

The other scientists involved are affiliated to National Centre for Advancing Translational Sciences, National Institutes of Health in the US, Structural Biology Research Centre, High Energy Accelerator Research Organization in Japan, Centre for Cellular and Molecular Platforms (C-CAMP) in India, Department of Cell and Systems Biology, University of Toronto in Canada, University of Iowa in the US and Experimental Division, Synchrotron SOLEIL in France.

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