Roasted or cold is a flavor and market decision first, a temperature setting second

Route compare

Roasted route and cold route, side by side

Both routes start from the same 45-55% oil seed, but they diverge at the roaster and never fully converge again — in aroma, color, yield, press class, cycle time, and the market each can be sold into. Read the three columns below as three different businesses, not three settings.

Decision factors

Questions that decide the sesame route

Answer these four questions before you name a model number. They decide the route, and the route decides the press frame, cycle time, filtration depth, and packaging that follow.

• What does the market pay for — a strong nutty aroma oil, or a light golden cold-pressed premium with a higher shelf price?
• How clean are the seeds? Cold pressing rewards cleaner, well-cleaned feed (impurities <0.1%); roasted oil is slightly more forgiving on color.
• What hourly output is needed? Roasted cycle (40-60 min) is faster per barrel than cold (60-90 min); roaster capacity often sets the rhythm.
• Is the oil for high heat? Both roasted and cold unrefined sit near a 177°C smoke point — finishing and dressing, not deep frying, unless refined (232°C).

Do not sell roasted oil under a cold-pressed claim. Cold press means ≤60°C end-to-end (≤40°C for cosmetic). They are different products with different temperatures, colors, and labels.

Why it matters

Why the route decision drives everything downstream

It is tempting to treat roasted and cold pressing as one machine with a temperature dial, but on a real sesame line they are two different products built from the same 45-55% oil seed. The roasted route begins long before the press: seeds are roasted in a drum or wok at 180-200°C for 15-25 minutes until amber-brown, and during that window sesamol forms from sesamolin, deepening both aroma and antioxidant capacity. That roasting step sets the hourly rhythm of the whole line, and it pairs naturally with a 200-325 ton press running a 40-60 minute cycle at 80-100°C, returning 40-50% oil with a 177°C smoke point — the strong, nutty 小磨香油 used to finish and season rather than to fry. The cold route removes roasting entirely: seeds are pressed at or below 60°C on a stiffer 355-500 ton frame that absorbs the higher mechanical stress of a 60-90 minute cycle without losing pressure stability. Yield drops to 35-42%, but the payoff is a light golden, mild oil positioned for salad, infant food (FFA <0.3%), and — at ≤40°C through a 0.22 μm sterile filter — cosmetic grade under GMPC or ISO 22716. The reason this matters for equipment selection is that the route, not the headline tonnage, decides which press frame, what cycle time, how deep the filtration (200-300 mesh, 1-5 μm bag, or 0.22 μm sterile), and which packaging line you actually need. A buyer who picks a model number first and a route second usually ends up re-sizing the line; a buyer who locks the market and route first gets a press and supporting modules that fit on the first quote.

Project boundary

What to confirm before scoping Sesame Roasted vs Cold Press Route

Sesame Roasted vs Cold Press Route should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Sesame Oil Press modules stay. Factory sesame hot: ~30 kg/batch with 6 partitions on 325; cold uses 355–500. Do not use peanut 100 kg barrel loads.

When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.

• Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
• Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
• Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
• Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.

Factory model check

Match hot / cold models to factory hard data

Pin models to published factory specs before tonnage talk.

Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).

• Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
• Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
• Factory sesame hot: ~30 kg/batch with 6 partitions on 325; cold uses 355–500. Do not use peanut 100 kg barrel loads.

Equipment check

project scope needs to land in equipment interfaces

Once the route is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.