The biological community requires more sophisticated methods to store, integrate and query their knowledge. The semantic Web technology enables to represent, share and discover heterogeneous data through formal ontologies. Semantic Web technologies also allow to link information thus moving from document centric idea of current Web to more fine grained semantic structures. The study is made on Ontology construction of Natural Food Resources, Chemicals and Diseases. These knowledge items are

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... ed to commonly agreed relationships. This enables the retrieval of user-specific semantic querying for topics of interest. This paper describes the works carried out on ontology-driven knowledge base and semantic querying of nutritional factors of Natural Food sources.