Getting Started With Yabani Processing
I first ran into yabani back in 2019 when a contact in Ghana sent me a sample of the raw root and asked if I could help scale a small extraction operation. The product itself is straightforward enough on paper — a climbing tuber native to the forest zones of Guinea, Liberia, and Sierra Leone, used for centuries in traditional medicine and increasingly catching attention as a natural appetite suppressant and metabolic supplement. The problem is that most people writing about it have never actually touched the supply chain, so they miss the things that matter. Here is how the actual workflow breaks down if you want to work with this seriously rather than just resell ground-up misinformation online. The first thing you need to understand is that yabani (also known locally as irish potato vine tubers or scientifically as Solanum americanum varieties in some regions, though the commercial yabani product usually comes from Plectranthus esculentus) is harvested differently depending on which country you are sourcing from. In Sierra Leone, the tubers are dug by hand during the dry season, usually between November and February. The moisture content at that point is critical. If you buy during the early wet season, the tubers can be up to 78 percent water, which means you are shipping nothing but weight and paying freight on it. My rule of thumb is to only accept shipments when the tubers feel heavy for their size but the skin cracks slightly when you bend one open. That usually indicates around 60 to 65 percent moisture, which is the window where drying will be efficient without overcooking the active compounds.
Once you have the raw material, the drying process is where most operations fail. You can sun-dry on raised mesh beds, but you need to turn the tubers every two hours during the first day. Left uneven, the outside hardens into a crust while the center stays moist, and that is where mold takes hold inside the piece. I had one batch from a supplier in Monrovia where about thirty percent of the tubers came back with internal Aspergillus contamination because the grower had piled them under a tarp after two days instead of curing them properly. You cannot smell or see that contamination from the outside. The workaround was to run each batch through a near-infrared moisture scanner before committing to purchase, and any piece reading above eight percent residual moisture after the supposed drying period gets rejected at the dock. It adds about twenty minutes per container to the inspection process, but it saves you from dealing with a spoiled shipment three months later. Drying methods worth knowing:
- Solar tunnel dryers are the sweet spot for small to medium operations. They bring moisture down from 65 percent to under eight percent in roughly 48 to 54 hours depending on ambient humidity, using about a third of the energy cost of electric tray drying.
- Banana leaf wrapping during the initial two days of drying helps retain volatile compounds that escape with rapid high-heat exposure. This is an older technique but it still produces a higher quality extract than aggressive oven drying.
- Fluidized bed dryers work well if you are processing more than two tons per week. They give consistent results but require a capital investment that most startups cannot justify in year one.
After drying, the tubers need to be milled to a particle size between 40 and 80 mesh depending on your end use. Coarser powder works for whole-food supplement capsules. Finer powder is necessary if you are moving into extract production, because the solvent contact surface area matters significantly at that stage. I recommend starting with a hammer mill equipped with a 60-mesh screen and doing a pilot batch before scaling up. The difference between 40-mesh and 80-mesh can change your extraction yield by as much as fifteen to twenty percent, which is the kind of margin that makes or breaks a small operation. The extraction phase itself is where the real technical decisions happen. Yabani contains a range of alkaloids and saponins that are water-soluble but also partially alcohol-soluble. A standard ethanol-water extraction at 60 percent ethanol concentration pulled at room temperature for twelve to fourteen hours gives you the broadest spectrum of active compounds. Higher ethanol percentages tend to pull more bitter compounds and fewer of the desirable polysaccharides. Lower percentages leave behind a lot of the lipid-soluble actives. I have seen too many vendors push 95 percent ethanol extractions and market the result as "full spectrum" when they have actually stripped out half the useful profile. That is not intentional fraud, usually. It is just ignorance of the chemistry. Once extraction is complete, you can either spray dry the liquid into a powder form or let it settle and decant for a resinous concentrate. Spray drying requires a unit that can handle inlet temperatures no higher than 160 degrees Celsius, otherwise you degrade the alkaloid content noticeably. My first spray dried batch came out gray instead of the pale golden color it should have been because I ran the inlet at 185 Celsius. That batch was undrinkable in supplement form and had to be sold off as a raw industrial ingredient at a fraction of the price. After dropping the inlet to 150 and the outlet to 85, the color and potency came back to normal. The tradeoff is longer cycle time — about twenty-five minutes per kilogram instead of eighteen — but it is worth it.
Get the Full Details
Market realities you should know before investing: Global demand for yabani is growing but it is still very small. Most of the commercial volume moves through specialty health food distributors in Europe and North America, and through traditional medicine markets in West Africa itself. Prices for raw dried tubers range anywhere from $2.50 to $6.00 per kilogram depending on quality and season, while finished extract powder can command $40 to $120 per kilogram. The margin looks attractive on paper but you need to account for loss rates, rejections, and the fact that many buyers will ask for third-party heavy metal and microbial testing before placing a bulk order, which costs you time and money upfront. Another thing nobody warns you about is the regulatory landscape. Yabani is generally recognized as safe in most jurisdictions, but individual countries have different requirements for new food ingredient notifications. The European Food Safety Authority has not yet completed a full evaluation, which means imports into the EU can face delays or additional documentation requests that add weeks to your timeline. The United States treats it as a dietary supplement ingredient, which is a simpler pathway but still requires FDA facility registration and compliance with 21 CFR part 111 if you are manufacturing domestically.
If you are just getting started, I would suggest focusing on the dried whole-root powder market first. It is less technically demanding, has a longer shelf life than extract, and lets you build relationships with buyers without the overhead of an extraction facility. Once you have consistent supply and proven quality data, moving into extracts is a logical next step. Trying to do both simultaneously is how most people lose money in this space.
