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Home NEWS Science News Biology

Study explores the role of citrus peel in reducing gut inflammation

Bioengineer by Bioengineer
February 22, 2019
in Biology
Reading Time: 2 mins read
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After years of research, UMass Amherst food scientist zeroes in on powerful interplay between gut bacteria and fruit compounds

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Credit: UMass Amherst


University of Massachusetts Amherst Professor Hang Xiao, Clydesdale Scholar of Food Science, has received a $1.5 million grant from the National Institutes of Health (NIH) to study how substances produced in the gut from citrus compounds are involved in decreasing inflammation in the colon.

The ultimate goal of his research is to develop diet-based strategies to prevent and treat inflammation in the colon and associated diseases, such as irritable bowel disease and colorectal cancer.

Xiao studies compounds known as polymethoxyflavones, a unique class of flavonoids found almost exclusively in citrus fruits, such as lemons and oranges, especially in the peels.

Xiao says he designed the study so that the results from the animal models have a high potential to be applied to a human situation, and he hopes to show how humans can derive robust health benefits from consuming citrus products. Using orange peel or zest in recipes is a good start, but it may be that supplements containing higher concentrations of citrus polymethoxyflavones will offer the stronger punch.

“It’s critical to study how the bacteria in the gut help transform dietary compounds into powerful anti-inflammatory agents in our body,” says Xiao, who was named in 2018 among the world’s most highly cited researchers by Clarivate Analytics, owner of Web of Science. “Once those anti-inflammatory metabolites are generated in the colon, they may fight off inflammation in the colon and related diseases, such as colon cancer.”

Xiao’s grant is one of 10 awarded by the National Center for Complementary and Integrative Health, part of the National Institutes of Health. All the projects are focused on possible links between gut microflora and the transformation of dietary compounds into bioactive metabolites. These metabolites, which gut bacteria produce when they break down food components, may provide an explanation for the health benefits of a diet rich in fruits and vegetables.

In Xiao’s research, mice are fed citrus polymethoxyflavones. “The fecal material from the mice reflects what happens in the colon,” he explains. “We use chemical and biomedical methods to isolate the metabolites generated in the colon and study their anti-inflammatory properties.”

The gut bacteria were found to be responsible for the production of an array of colonic metabolites from polymethoxyflavones, “and many of these metabolites possessed much stronger anti-inflammatory effects than their parental polymethoxyflavones,” Xiao says.

“We want to keep looking at what other novel metabolites are generated by the bacteria,” Xiao says. “We want to identify them and determine their anti-inflammatory potential. We also want to identify and characterize the gut bacteria which are responsible for the production of these metabolites.”

###

Media Contact
Patty Shillington
[email protected]
305-606-9909

Original Source

https://www.umass.edu/newsoffice/article/study-explores-role-citrus-peel-reducing

Tags: BiochemistryBiomedical/Environmental/Chemical EngineeringCell BiologyFood/Food ScienceGastroenterologyMedicine/HealthMetabolism/Metabolic DiseasesMolecular BiologyNutrition/Nutrients
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