Essential oil of Aloysia triphylla
 in Nile tilapia: anaesthesia, stress parameters and sensory evaluation of fillets

ABSTRACT: This research aimed to evaluate whether the essential oil of Aloysia triphylla (EOAT) used in vivo as a sedative in the water for transporting fish could increase the oxidative stability of silver catfish (Rhamdia quelen) fillets during frozen storage. The chemical composition of EOAT and of fillets from fish exposed to EOAT (0, 30 or 40µL L-1) were assessed. The pH and lipid oxidation parameters (conjugated dienes, CD; thiobarbituric acid-reactive-substances, TBARS) were evaluated in the fillets throughout the storage period (-18±2oC/17 months). The main compounds found in EOAT were α- and β-citral. Treatment with EOAT did not modify the proximate composition of the fillets, but 40µL L-1 EOAT reduced pH levels when compared to the control fillets (P<0.05). Compared to the control fillets, the fillets from fish treated with 30 and 40µL L-1 EOAT had higher initial CD values (P<0.05), whereas fillets from fish treated with 40µL L-1 EOAT had lower TBARS levels after 6, 9 and 17 months of storage (P<0.05). Results indicated that use of EOAT as a sedative in silver catfish transport water delays the degradation of primary oxidation products (CD) into secondary products (TBARS) in the frozen fillets. This delay in the lipid oxidation rate may increase the shelf life of frozen fillets.

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Effect of frost on yield and composition of Aloysia triphylla essential oil

Journal of Medicinal Plants Research ◽

10.5897/jmpr2015.6016 ◽

2016 ◽

Vol 10 (7) ◽

pp. 88-92 ◽

Cited By ~ 1

Author(s):

Schmidt Denise ◽

Otomar Caron Braulio ◽

Prochnow Daiane ◽

Cocco Carine ◽

Felipe Elli Elvis ◽

...

Keyword(s):

Essential Oil ◽

Aloysia Triphylla

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Physiological and biochemical responses of silver catfish, Rhamdia quelen, after transport in water with essential oil of Aloysia triphylla (L'Herit) Britton

Aquaculture ◽

10.1016/j.aquaculture.2013.10.013 ◽

2014 ◽

Vol 418-419 ◽

pp. 101-107 ◽

Cited By ~ 54

Author(s):

Carla Cristina Zeppenfeld ◽

Cândida Toni ◽

Alexssandro Geferson Becker ◽

Denise dos Santos Miron ◽

Thaylise Vey Parodi ◽

...

Keyword(s):

Essential Oil ◽

Silver Catfish ◽

Biochemical Responses ◽

Rhamdia Quelen ◽

Aloysia Triphylla ◽

Physiological And Biochemical

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Essential oil of Ocimum basilicum and Eugenol as Sedatives for Nile Tilapia

Journal of Agricultural Studies ◽

10.5296/jas.v8i2.17075 ◽

2020 ◽

Vol 8 (2) ◽

pp. 657

Author(s):

Arlene Sobrinho Ventura ◽

Ruy Alberto Caetano Corrêa Filho ◽

Gabrielly Cristina Teodoro ◽

Laice Menes Laice ◽

Phillipe Thiago Leite Barbosa ◽

...

Keyword(s):

Water Quality ◽

Essential Oil ◽

Respiratory Rate ◽

Nile Tilapia ◽

Exposure Period ◽

Ocimum Basilicum ◽

Sedative Effect ◽

Ventilatory Frequency ◽

Control Water

This study evaluated the modulation of the ventilatory frequency of Nile tilapia sedated with essential oil of Ocimum basilicum and eugenol. The fish were exposed to the following treatments: control (water only); ethanol 200 µl L-1 (concentration used to dilute the anesthetic); eugenol 10 µl L-1 and 20 µl L-1; essential oil of O. basilicum at the concentration of 10 µl L-1 and 20 µl L-1. After 90 minutes of exposure to the treatments, water quality, mortality and respiratory rate were determined. The concentration of 20 µl L-1 of the essential oil of O. basilicum and eugenol showed a sedative effect and reduced the excretion of metabolic ammonia in Nile tilapia. There was no mortality in fish exposed to the treatments. The respiratory rate did not differ between the different treatments. It is concluded that the concentration of 20 µl L-1 of the essential oil of O. basilicum and eugenol shows the best result in the inducing sedative effect for Nile tilapia, and that the essential oil of O. basilicum and eugenol in the concentrations of 10 µl L-1 and 20 µl L-1 in an exposure period up to 90 minutes do not alter the ventilatory frequency of Nile tilapia.

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Induced aerocystitis and hemato-immunological parameters in Nile tilapia fed supplemented diet with essential oil of Lippia alba

Brazilian Journal of Veterinary Research and Animal Science ◽

10.11606/issn.1678-4456.bjvras.2018.136717 ◽

2018 ◽

Vol 55 (1) ◽

pp. 1 ◽

Cited By ~ 2

Author(s):

Jorge Pedro Rodrigues-Soares ◽

Gabriel Fernandes Alves Jesus ◽

Eduardo Luiz Tavares Gonçalves ◽

Klayton Natan Moraes ◽

Edsandra Campos Chagas ◽

...

Keyword(s):

Essential Oil ◽

Oreochromis Niloticus ◽

Nile Tilapia ◽

Immunological Parameters ◽

Lippia Alba

O presente estudo avaliou a suplementação dietária com óleo essencial de Lippia alba sobre os parâmetros hemato-imunológicos em tilápias do Nilo (Oreochromis niloticus) submetidas à inflamação aguda induzida por carragenina na bexiga natatória. Pelo período de 45 dias, 96 peixes foram divididos em quarto tratamentos em triplicata: a) peixes suplementados com óleo esencial de L. alba (4 mL kg-1 de ração) injetados com carragenina; b) peixes suplementados com álcool de cereais injetados com carragenina; peixes não suplementados com óleo essencial injetados com carragenina; c) peixes não suplementados não injetados. Os níveis de cortisol, eritrograma, leucograma e o infiltrado inflamatório foram analisados seis horas após o estímulo inflamatório. Peixes injetados com carragenina apresentaram reação inflamatória aguda na bexiga natatória caracterizada por maior infiltrado de neutrófilos e monócitos. O número de neutrófilos circulantes foi significativamente maior nos peixes suplementados com L. alba quando comparado aos outros tratamentos. Não houve diferença nos níveis de cortisol. Para a dose, o tempo e a forma de administração testada, a suplementação com óleo essencil de L. alba não apresentou atividade anti-inflamatória. Por outro lado, foi constatada influência da suplementação dietária no número de neutrófilos após a aerocistite enfatizando a sua característica imunomoduladora.

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