Single cell oilsingle cell oil might be defined as the edible oils obtainable from microorganisms being similar in type and composition to those oils and fats from plants or animals. in a world it is extracted from microorganisms, such as ARA, DHA. both fatty acids are mainly produced by US Martek corrently. They are usually used to be added in infant food for required nutritions.

Single cell oils (SCO) are the edible oils extracted from micro-organisms-the single-celled entities that are at the bottom of the food chain.The best producers with the highest oil contents are various species of yeasts and fungi with several key algae that are also able to produce high levels of nutritionally important PUFA. Their potential to produce PUFA has now galvanized the current interest in these SCO as oils rich in highly desirable fatty acids essential for our well being and not readily available either from plants or animals

Single cell oil production in solid-state fermentation by Microsphaeropsis sp. from steam-exploded wheat straw mixed with wheat bran.Abstract

Microsphaeropsis sp. was used to produce SCO in solid-state fermentation (SSF) from a substrate consisting of steam-exploded wheat straw (SEWS) and wheat bran (WB). The yield of SCO was 42 mg/g dry substrate (gds) without adding cellulase. To achieve a higher SCO yield, cellulase was added to the solid-state medium, resulting in an increase of SCO from 42 to 74 mg/gds with a cellulase loading of 10 FPU/gds. Other SSF parameters such as ratio of SEWS to WB of the dry substrate, initial moisture content, and incubation temperature were optimized under the condition of cellulase loading of 10 FPU/gds. So optimized, the SCO yield was 80 mg/gds, and the SCO content of the dry fermented mass was 10.2%. This research explored a novel method to produce SCO from the abundant and cheap agricultural residues - wheat straw and wheat bran.