Nanoemulsions with oleoresin of Copaifera reticulata (Leguminosae) improve anthelmintic efficacy in the control of monogenean parasites when compared to oleoresin without nanoformulation

Author(s)

Malheiros, Dayna Filocreao ^[1] ; Sarquis, Icaro Rodrigues ^[2] ; Ferreira, Irlon Maciel ^[2] ; Mathews, Patrick Delgado ^[3] ; Mertins, Omar ^[4] ; Tavares-Dias, Marcos ^{[1, 5]}

Affiliation

^[1] Fed Univ Amapa UNIFAP, Postgrad Program Trop Biodivers PPGBIO, Macapa - Brazil

^[2] Fed Univ Amapa UNIFAP, Grp Biocatalysis & Organ Synth, Appl Chem Coll, Macapa - Brazil

^[3] State Univ Campinas UNICAMP, Dept Anim Biol, Inst Biol, Campinas - Brazil

^[4] Fed Univ Sao Paulo UNIFESP, Dept Biophys, Paulista Sch Med, Sao Paulo - Brazil

^[5] Embrapa Amapa, Rodovia Juscelino Kubitschek, Km 5, 2600, BR-68903419 Macapa, AP - Brazil

• Document type: Journal article
• Source: JOURNAL OF FISH DISEASES; v. 43, n. 6 APR 2020.
• Web of Science Citations: 0

Abstract

This study compared the in vitro anthelmintic activity of Copaifera reticulata oleoresin (200, 400, 600, 800 and 1,000 mg/L) and of nanoemulsions prepared with this oleoresin (50, 100, 150, 200 and 250 mg/L) against monogeneans on the gills of Colossoma macropomum. The major compounds present in the oleoresin of C. reticulata were gamma-macrocarpene (14.2%), alpha-bergamotene (13.6%), beta-selinene (13.4%) and beta-caryophyllene (11.7%). All concentrations of the nanoemulsion and the oleoresin without nanoformulation showed anthelmintic efficacy against monogeneans, and higher concentrations led to more rapid parasite mortality. Structural damages to the tegument of the parasites exposed to C. reticulata oleoresin were observed with scanning electron microscopy. At two hours of exposure, fish showed 100% tolerance to all nanoemulsion concentrations used in the in vitro assays, whereas 100% mortality was shown in the fish exposed to the oleoresin without nanoformulation after one hour. The results of this study suggest that nanoemulsions with oleoresin of C. reticulata have advantages in the control and treatment of monogenean infections in C. macropomum when compared to the oleoresin without nanoformulation. In addition, since nanoemulsions with the C. reticulata oleoresin are safe to control monogeneans, the efficacy of these nanoformulations may be assayed in therapeutic baths to treat C. macropomum infected by monogeneans. (AU)

• FAPESP's process: 18/20482-3 - Diversity of microscopic cnidarians from the Amazon Basin with emphasis on phylogeny, systematic and interaction with their hosts
• Grantee: Patrick Mathews Delgado
• Support Opportunities: Scholarships in Brazil - Post-Doctoral