**2.1** *Koelreuteria paniculata*

*Koelreuteria paniculata* belongs to the family Sapindaceae. It is a novel non-edible seed oil source that can be investigated for biodiesel production (**Figure 1**). It is less likely that pests may destroy it. It can grow at different soil

**Figure 1.** *Koelreuteria paniculata. (A) Plant; (B) seeds; (C) biodiesel; (D) glycerin.*

environments, even at high pH soils. It possesses gorgeous inflorescence with ellipsoid pods and contains abundance of seeds. About 15–20kg seeds are produced annually from a single plant. The feasibility of planting *K. paniculata* trees ranges from 400 to 500 per hectare area with average production of 115,000 kg seeds and 30,000 kg per hectare oil production. *K. paniculata* species have origin from China, Japan, and Korea. *K. paniculata* is often used as an ornamental plant and declared as an invasive due to the inexhaustible seed production and offspring. *K. paniculata* is suitable to grow in unused and desolate lands and its seeds can be effectively used as alternate energy source, which contain 28–30% oil constituents [39, 43].
