Kemiri Sunan [Reutealis trisperma (Blanco) Airy Shaw] fruit harvest is carried out according to physiological maturity, indicated by the fruit’s natural fall from the tree. The fruit collection period can take up to several days according to the processing mill’s minimum capacity. Constraints like this result in fruit collected at an earlier harvest cycle that will undergo a storage process for up to several days. The study was conducted at Pakuwon Experimental Station and Integrated Laboratory, Balittri, Sukabumi, West Java. This study investigates the biochemical changes of Kemiri sunan kernels at eight levels of fruit storage duration. The design used was completely randomized with eight treatments and three replications. The eight treatments were the fruit storage duration: 0 days (without storage) and storage for 2, 4, 6, 8, 10, 12, and 14 days. The variables observed were the kernel’s moisture, ash, oil, protein, peroxide, and free fatty acids (FFA) content. The results showed that fruit storage decreased moisture and oil content but increased FFA content. Storage of fruit up to a maximum of 8 days does not change the kernels’ biochemistry, indicating that the fruit is still suitable for further processing.

Kemiri Sunan [Reutealis trisperma (Blanco) Airy Shaw] is a crop oil-producing plant with great potential as a source of raw materials for the oleochemical, biofuels, and other derivate product industries. Here, we focus on the prospect and potential of the kemiri sunan plant as a potential source of biofuel from inedible crops. The main potential lies in the fruit, which a dry seed production rate of 10-15 tons/ha/year or equivalent to about 8 tonnes of crude oil/ha/yr or about 7 tonnes of biodiesel/ha/yr. This uniqueness can be used as a source of raw materials for biofuel and other chemical industries that do not compete with crop oils for food. However, its current development in Indonesia is still constrained by the availability of land. The alternative that can be taken is to utilize unproductive land, including sub-optimal land, ex-mining land, and other degraded lands. Constraints of limited land for the development of kemiri sunan can be overcome by utilizing less productive lands, including ex-mining land, dry climate dry land, and reservoir buffer land. The condition of the land is sufficient to support the growth and development of the kemiri sunan plant which is quite good. The plant's character is in the form of a tree with a shady leaf crown and a deep root system that makes this plant very useful as a conservation plant on these lands.