Reference product: protein feed, 100% crude [kg]
Location: RoW - Rest-of-World
This dataset represents the mechanical soybean processing into soybean meal and crude soy oil. This dataset is associated to a typically on farm location technology. If the user requires an industrial process, we suggest the “soybean meal and crude oil production” dataset which represents a chemical extraction process. This dataset is extrapolated from the Quebec dataset.
In the mechanical extraction, received soybeans are examined and damaged seeds are eliminated. The soybeans are then cracked into four to six particles by corrugated cracking rolls. The hulls are separated from the soybeans by aspiration. Dehulled soybeans are then extruded (a machine consisting of a screw rotating inside a barrel). The heat is generated by the extruder through friction allows for cooking, sterilizing, stabilizing, texturizing and dehydrating soybeans. Upon leaving the extruder, hot soybeans are conveyed into an expeller, a screw press, which squeezes the oil from soybeans. Expellers have generally an oil removal efficiency of about 65 to 67% (Riaz, 2005).

Riaz, M. N., Bailey’s Industrial Oil and Fat Products: Extrusion Processing of Oilseed Meals for Food and Feed Production. In John Wiley & Sons, Inc.: 2005; Vol. Sixth Edition, Six Volume Set
[This dataset has been generated using the system model "Allocation, cut-off by classification". A system model describes how activity datasets are linked to form product systems. The allocation cut-off system model subdivides multi-product activities by allocation, based on a physical properties, economic, mass or other properties. By-products of waste treatment processes are cut-off, as are all by-products classified as recyclable. Markets in this model include all activities in proportion to their current production volume.
Version 3 of the ecoinvent database offers three system models to choose from. For more information, please visit: https://www.ecoinvent.org/database/system-models-in-ecoinvent-3/system-…)]