The Bioassay laboratory holds expertise in the identification of naturally derived bioactive compounds. In collaboration with other laboratories in the Bioresources Technology Unit, we developed assays and carry out the screening of natural products from microorganisms. With an emphasis on fungal and actinomycete derived natural products, our goal is to identify potential lead compounds for further development in specific areas; including human infectious diseases, crop diseases, agricultural and domestic animal pests. Currently, we have collected more than 50,000 extracts from over 8,000 isolates of fungi and actinomycetes in our microbial extract repository. These extracts are available for future screening of novel biological activities and secondary metabolite profiles. Through the systematic assessment of microorganisms in BIOTEC Culture Collection, we strive to promote an efficient and sustainable utilization of Thailand natural resources, which ultimately would lead to the discovery of natural product entities with potential for commercialization from our microbial resource.