Microgreens Bioavailability: How Much Nutrition Do You Absorb?

A nutrient on a lab report isn’t the same as a nutrient in your body. Some of it never leaves the food during digestion. Some of what does get out never crosses into your blood. Scientists call the part you actually take in bioavailability.

Microgreens have plenty of nutrients to start with. The question is how much of that you keep. The research gives a more honest answer than the big multiples you’ll see online, and in one case the grown plant came out ahead.

What does bioavailability mean for microgreens?

It’s the share of a nutrient your body can absorb and use. Two steps decide it, and most studies only test the first one.

Step one is bioaccessibility. That’s how much of a nutrient digestion frees from the food so it can be absorbed. Labs test it with a model gut, running chopped greens through mouth, stomach and intestine conditions in a flask.

Step two is absorption. The freed nutrient has to cross the gut wall and reach your blood. Labs sometimes test this with a layer of human gut cells. The only true test is in people, and that’s rare.

So when you read that a microgreen is “more bioavailable,” check what was measured. Most of the time it’s step one.

Do microgreens have more nutrients than mature vegetables?

Often, but not always. A study of 25 commercial microgreens found their cotyledon leaves held higher nutrient densities than mature leaves listed in the USDA database (Xiao et al., 2012).

A wider look tells a mixed story. One team compared six microgreens with their mature plants across more than 3,000 compounds and 26 minerals. Several compounds were at least twice as high in the microgreens. Others were the same or lower (Johnson et al., 2021).

Either way, a nutrient count is only half the picture. It says how much is in the food, not how much you keep. For the full comparison, see our research hub on microgreens vs mature plants.

How much of a microgreen’s nutrition does your body absorb?

It depends on the nutrient, and the range is wide. Here’s what digestion studies found.

Four hydroponic brassica microgreens went through a model gut. Afterward, 43 to 70% of their polyphenols and 31 to 63% of their isothiocyanates were freed. For major minerals like potassium, calcium and magnesium, it was 34 to 90% (de la Fuente et al., 2019).

Other compounds fared worse. In kale, red cabbage, kohlrabi and radish microgreens, flavonoids averaged about 8% bioaccessible and lignans about 14% (Tomas et al., 2021).

Minerals vary too. In chicory, Swiss chard and black cabbage microgreens, copper was 100% bioaccessible. Manganese was only 15% (D’Imperio et al., 2024). In radish microgreens, vitamins and phenolics landed between 13 and 68% (Jauregui et al., 2025).

So any single number for “how much you absorb” from microgreens hides a lot. Copper and some minerals come through well. Many plant compounds come through in small fractions.

Are nutrients in microgreens easier to absorb than in grown plants?

Not as a rule. One study tested this head to head, and it went both ways.

Researchers compared iron in fenugreek, rocket (arugula) and broccoli, as microgreens and as grown plants. Mature fenugreek and rocket held more iron than their microgreens. Mature fenugreek and broccoli released more iron in digestion. Only fenugreek microgreens beat their mature plant when iron uptake was measured in gut cells (Khoja et al., 2020).

You may read that microgreens have thinner cell walls, so their nutrients come out more easily. We found no microgreen study that tested that idea. Until one does, treat it as a guess.

What happens to microgreen compounds during digestion?

They change, and not always for the worse. Digestion can release compounds that were locked in the leaf, and it can break others down.

In red beet and amaranth microgreens, measured phenolics rose 36 to 88% after a model digestion, and antioxidant readings rose too (Rocchetti et al., 2020). In red radish microgreens, phenolics climbed 70% in the stomach stage. Then the small intestine stage cut them by 53 to 76% (Sosnowska et al., 2025).

That swing is why a raw count can mislead in both directions. What the leaf holds and what survives the trip are two different numbers.

Has anyone measured absorption in people?

We found one study that did, for one compound. Eleven healthy adults ate a single serving of fresh broccoli microgreens. Researchers then tracked sulforaphane breakdown products in urine and stool.

The urine results looked much like earlier studies of people fed broccoli sprouts. Broccoli microgreens held about as much of the sulforaphane starting compound as sprouts do, and it stayed stable. The team called broccoli microgreens a significant source of sulforaphane (Bouranis et al., 2023).

That’s a real finding, but a narrow one. It covers a single compound in 11 people. For more on sulforaphane, see the sulforaphane research hub.

How can you get more out of your microgreens?

A few steps have some evidence behind them.

Pair iron with vitamin C. In the iron study, adding vitamin C raised iron uptake from mature fenugreek and rocket (Khoja et al., 2020). Vitamin C-rich foods on the same plate may help, though the effect on microgreens themselves wasn’t shown.

Eat them fresh. Microgreens lose some vitamins in the fridge, so less is there to absorb later. Here’s how long you can store microgreens at home.

Grow for it. Feeding zinc to pea and radish microgreens raised the zinc freed in digestion about 4-fold in pea and 17-fold in radish (Poudel et al., 2025). Our entry on microgreens biofortification covers how and where the dose gets risky.

Want to grow the crop from the human study? These broccoli seeds are sold for microgreens.

Bioavailability in microgreens: what it all boils down to

Microgreens can be dense in nutrients, and your body gets a share of them. How big a share depends on the nutrient and the crop. Copper and some minerals come through well. Many plant compounds come through in small fractions.

No study shows microgreens are many times easier to absorb than grown vegetables. One iron study found the opposite for two of three crops. Eat them for what they are, a fresh and nutrient-rich food that works best as part of a mixed diet.

Microgreens bioavailability: frequently asked questions

Are microgreens more bioavailable than sprouts?
For sulforaphane, they look similar. People fed broccoli microgreens showed urine results much like those in earlier broccoli sprout studies. We found no wider comparison across other nutrients.

Does cooking microgreens change what you absorb?
There’s little microgreen data on cooking. One radish study tested hot-air drying instead, and drying temperature didn’t change how much of most vitamins and phenolics digestion freed.

Is bioaccessibility the same as bioavailability?
No. Bioaccessibility is the share freed from the food in digestion. Bioavailability is the share your body takes in and uses, which is the same or smaller.

References

Want to go deeper? The Microgreens World research database holds 250+ studies comparing microgreens with grown plants. Search the papers →

Bouranis, J. A., Wong, C. P., Beaver, L. M., Uesugi, S. L., Papenhausen, E. M., Choi, J., Davis, E. W., Da Silva, A. N., Kalengamaliro, N., Chaudhary, R., Kharofa, J., Takiar, V., Herzog, T. J., Barrett, W., & Ho, E. (2023). Sulforaphane Bioavailability in Healthy Subjects Fed a Single Serving of Fresh Broccoli Microgreens. Foods, 12(20), 3784. https://doi.org/10.3390/foods12203784

D’Imperio, M., Parente, A., & Serio, F. (2024). Exploring mineral profiles and their bioaccessibility of chicory, Swiss chard, and black cabbage microgreens. Future Foods, 10, 100519. https://doi.org/10.1016/j.fufo.2024.100519

de la Fuente, B., López-García, G., Máñez, V., Alegría, A., Barberá, R., & Cilla, A. (2019). Evaluation of the Bioaccessibility of Antioxidant Bioactive Compounds and Minerals of Four Genotypes of Brassicaceae Microgreens. Foods, 8(7), 250. https://doi.org/10.3390/foods8070250

Jauregui, M. J., Warren, E. R., Di Gioia, F., Kwasniewski, M. T., & Lambert, J. D. (2025). Effects of Hot Air Drying on the Nutritional and Phytochemical Composition of Radish ( Raphanus sativus L.) Microgreens. Journal of Food Science, 90(7), e70426. https://doi.org/10.1111/1750-3841.70426

Johnson, S. A., Prenni, J. E., Heuberger, A. L., Isweiri, H., Chaparro, J. M., Newman, S. E., Uchanski, M. E., Omerigic, H. M., Michell, K. A., Bunning, M., Foster, M. T., Thompson, H. J., & Weir, T. L. (2021). Comprehensive Evaluation of Metabolites and Minerals in 6 Microgreen Species and the Influence of Maturity. Current Developments in Nutrition, 5(2), nzaa180. https://doi.org/10.1093/cdn/nzaa180

Khoja, K. K., Buckley, A., Aslam, M. F., Sharp, P. A., & Latunde-Dada, G. O. (2020). In Vitro Bioaccessibility and Bioavailability of Iron from Mature and Microgreen Fenugreek, Rocket and Broccoli. Nutrients, 12(4), 1057. https://doi.org/10.3390/nu12041057

Poudel, P., Connolly, E. L., & Di Gioia, F. (2025). Zinc biofortification and light intensity independently modulate zinc bioaccessibility, minerals, phytochemicals, and yield components of pea and radish microgreens. Future Foods, 12, 100809. https://doi.org/10.1016/j.fufo.2025.100809

Rocchetti, G., Tomas, M., Zhang, L., Zengin, G., Lucini, L., & Capanoglu, E. (2020). Red beet (Beta vulgaris) and amaranth (Amaranthus sp.) microgreens: Effect of storage and in vitro gastrointestinal digestion on the untargeted metabolomic profile. Food Chemistry, 332, 127415. https://doi.org/10.1016/j.foodchem.2020.127415

Sosnowska, D., Zakłos-Szyda, M., Kajszczak, D., & Podsędek, A. (2025). Bioactive Properties and Phenolic Profile of Bioaccessible and Bioavailable Fractions of Red Radish Microgreens After In Vitro Digestion. Molecules, 30(14), 2976. https://doi.org/10.3390/molecules30142976

Tomas, M., Zhang, L., Zengin, G., Rocchetti, G., Capanoglu, E., & Lucini, L. (2021). Metabolomic insight into the profile, in vitro bioaccessibility and bioactive properties of polyphenols and glucosinolates from four Brassicaceae microgreens. Food Research International, 140, 110039. https://doi.org/10.1016/j.foodres.2020.110039

Xiao, Z., Lester, G. E., Luo, Y., & Wang, Q. (2012). Assessment of Vitamin and Carotenoid Concentrations of Emerging Food Products: Edible Microgreens. Journal of Agricultural and Food Chemistry, 60(31), 7644–7651. https://doi.org/10.1021/jf300459b