Posted on 12/30/2022 12:10:34 PM PST by Red Badger
The researchers discovered that young pigs that ate a diet high in tomatoes for two weeks had an increase in the diversity of their gut microbes and a shift in their gut bacteria towards a more favorable profile.
According to researchers, the favorable results obtained from studies on pigs warrant further investigation in human subjects. According to researchers, a diet heavy in tomatoes for two weeks led to an increase in the diversity of gut microbes and a change in gut bacteria towards a more favorable profile in young pigs.
Based on these findings from a short-term intervention, the research team plans to conduct similar studies in humans to explore the potential health-related connections between consuming tomatoes and changes to the human gut microbiome.
“It’s possible that tomatoes impart benefits through their modulation of the gut microbiome,” said senior author Jessica Cooperstone, assistant professor of horticulture and crop science and food science and technology at The Ohio State University.
“Overall dietary patterns have been associated with differences in microbiome composition, but food-specific effects haven’t been studied very much,” Cooperstone said. “Ultimately we’d like to identify in humans what the role is of these particular microorganisms and how they might be contributing to potential health outcomes.”
The research was recently published in the journal Microbiology Spectrum.
The tomatoes used in the study were developed by Ohio State plant breeder, tomato geneticist, and co-author David Francis, and are the type typically found in canned tomato products.
Ten recently weaned control pigs were fed a standard diet and 10 pigs were fed the standard diet fine-tuned so that 10% of the food consisted of a freeze-dried powder made from the tomatoes.
Fiber, sugar, protein, fat, and calories were identical for both diets. The control and study pig populations lived separately, and researchers running the study minimized their time spent with the pigs – a series of precautions designed to ensure that any microbiome changes seen with the study diet could be attributed to chemical compounds in the tomatoes.
Microbial communities in the pigs’ guts were detected in fecal samples taken before the study began and then seven and 14 days after the diet was introduced.
The team used a technique called shotgun metagenomics to sequence all microbial DNA present in the samples. Results showed two main changes in the microbiomes of pigs fed the tomato-heavy diet – the diversity of microbe species in their guts increased, and the concentrations of two types of bacteria common in the mammal microbiome shifted to a more favorable profile.
This higher ratio of the phyla Bacteroidota (formerly known as Bacteriodetes) compared to Bacillota (formerly known as Firmicutes) present in the microbiome has been found to be linked with positive health outcomes, while other studies have linked this ratio in reverse, of higher Bacillota compared to Bacteroidota, to obesity.
Tomatoes account for about 22% of vegetable intake in Western diets, and previous research has associated the consumption of tomatoes with reduced risk for the development of various conditions that include cardiovascular disease and some cancers.
But tomatoes’ impact on the gut microbiome is still a mystery, and Cooperstone said these findings in pigs – whose gastrointestinal tract is more similar than rodents’ to the human GI system – suggest it’s an avenue worth exploring.
“This was our first investigation as to how tomato consumption might affect the microbiome, and we’ve characterized which microbes are present, and how their relative abundance has changed with this tomato intervention,” she said.
“To really understand the mechanisms, we need to do more of this kind of work in the long term in humans. We also want to understand the complex interplay – how does consuming these foods change the composition of what microbes are present, and functionally, what does that do?
“A better understanding could lead to more evidence-based dietary recommendations for long-term health.”
Reference:
“Short-Term Tomato Consumption Alters the Pig Gut Microbiome toward a More Favorable Profile” by Mallory L. Goggans, Emma A. Bilbrey, Cristian D. Quiroz-Moreno, David M. Francis, Sheila K. Jacobi, Jasna Kovac and Jessica L. Cooperstone, 8 November 2022, Microbiology Spectrum.
DOI: 10.1128/spectrum.02506-22
The study was funded by the U.S. Department of Agriculture, the Ohio Agricultural Research and Development Center, and the Foods for Health initiative at Ohio State.
Honest question:
If this concerns microbes that are on/in tomatoes, then how does such a microbe survive the stomach acid before moving into the intestines?
OR...
Is this about some nutrient in tomatoes that benefit the intestinal microbes?
I can’t eat those things. They are for color in a salad only. They have no taste. Home growns cannot be beat.
Admittedly,I am not going to read this article. Just hopped on to share that I’m sick of hearing about “gut health.”
With Gluten!....................
This about some nutrient in tomatoes that benefit the intestinal microbes.................
Kombucha........ fermented tea
Best gut health remedy especially after a bout of antibiotics
Home brewed is better than store bought
Our local Chinese buffet serves it at a premium price.......................
Hmmm...... I have never seen it sold at anything but a premium price.
It’s black tea!!
I’ve never had it because I usually drink water. Soft drinks and regular tea and green tea is $2.50, while the Kombucha is like $5............. haven’t been there in a while, so prices are probably even higher now............
I made kombucha to restore our biotics after both my wife and I has intensive antibiotic prescribed after surgery last year about this time. It is not rocket science. We got better and I quit but still have the capability if needed.
The scoby grows in the fermentation vessel and can be used a very long time as it self reproduces
I recommend this book for you:
Thanks for that....
LOL - now that is a good one!
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