Comet Bio announced successful completion of its randomized, placebo-controlled, crossover clinical trial evaluating the gastrointestinal (GI) tolerability and prebiotic effects of its Arabinoxylan Plant Fiber Extract, Arrabina™. Results reveal that consumers can take up to 12g per day of ArrabinaTM with no negative gut or bowel reaction. The study also found that Arrabina™ promotes the growth of bifidobacteria, confirming its prebiotic function.

The outstanding tolerability makes Arrabina™ unique within the prebiotic market. Prebiotics play a pivotal role in the microbiome by supplying the crucial, non-digestible ingredients that fuel the growth of good bacteria, including probiotics. Unfortunately, many popular prebiotics can cause GI distress and bloating, making it difficult for consumers to incorporate them into their healthy diets. Arrabina™ provides a solution to this prebiotic problem. 

The clinical trial administered by the leading research organization, Biofortis, was completed with 44 healthy individuals who consumed Arrabina™ for three weeks at 6g or 12g per day or a placebo. Participants ranked eight areas for gut and bowel discomfort, including gas, bloating, and nausea, to compare any potential differences in GI tolerance of the three treatments. The study concludes that even at a high dosage of 12g per day, there were no statistical differences in GI scores between Arrabina™ and the placebo.

"We are thrilled that the clinical trial results prove that ArrabinaTM is exceptionally well-tolerated," said Andrew Richard, CTO of Comet Bio. "These results add to the body of the clinical evidence we have assembled, including structure-function claims that our Arabinoxylan Plant Fiber Extract, Arrabina™ is a prebiotic that helps maintain healthy blood sugar and supports immunity."

Despite its exceptional prebiotic and health benefits, Arabinoxylan has not been widely available for use due to inefficient extraction technology. Comet Bio saw this market need and determined its patented upcycling technology would be the answer. 

"Our proprietary water extraction technology makes it possible to produce Arabinoxylan and other nutrition from upcycled crop leftovers," said Comet Bio CEO, Rich Troyer. "Our process uses water and pressure to produce Arabinoxylan as a fully-soluble powder with superior functionality. Arrabina™’s low viscosity means it will not gel or impact texture when added as a supplement to protein powders or as a fiber boost for nutrition bars, baked goods, and drinks."

By using upcycled crop leftovers to produce Arabinoxylan, Comet Bio enables farmers to use their whole harvest and prevent food waste. Every year vast amounts of food waste occur, costing consumers an estimated $46 billion. Comet Bio's ArrabinaTM mitigates this industry waste by extracting nutrients from these leftovers and providing supplement and food companies a healthy, sustainable ingredient.

To learn more about ArrabinaTM including its tolerability and applications, visit Comet Bio at

About Comet Bio

Comet Bio is an award-winning food technology company based in London, Ont., and Schaumburg, Ill. The company makes unique, healthy and sustainable products using its patented upcycling technology. Its ArrabinaTM Arabinoxylan Plant Fiber Extract has superior tolerability and functionality within the prebiotic market. For more information, visit and follow us on Twitter at @cometbio.