Pesticides play an important role in agriculture, prevent loses by pests which destroy cultures and causes several damages to producers and to exporting countries of agriculture products. However, pesticides leave residues where they are used. A parameter used for residue quantification is known...

This article starts with a commentary on the importance of natural products for today's society, emphasizing the relevance of Brazilian biodiversity in the world scenario, as well as the need to protect research results in this area notwithstanding the controversies related to this protection. A...