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Revistas científicas UCV
Bachelor thesis . 2019
License: CC BY NC ND
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Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2019
License: CC BY NC ND
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Artemia como vehículo de sustancias bioactivas/antibióticos en acuicultura: encapsulación mediante nanopartículas de zeína

Authors: Lizanda Piqueras, Myriam;

Artemia como vehículo de sustancias bioactivas/antibióticos en acuicultura: encapsulación mediante nanopartículas de zeína

Abstract

Los nauplios de Artemia son el alimento vivo más utilizado en larvicultura, a pesar de que su contenido en ácidos grasos poliinsaturados de cadena larga es insuficiente para cubrir las necesidades nutricionales de las larvas de peces y crustáceos. Estas deficiencias se han abordado mediante la vehiculación de dichos compuestos y otras sustancias (antibióticos y bioactivos) mediante los nauplios. El objetivo principal de este trabajo ha sido explorar el empleo de nanopartículas de zeína (NPZ) como sistema de encapsulación de antibióticos y bioactivos para su explotación en larvicultura. En el presente estudio se expusieron nauplios de Artemia franciscana de 24h de edad a NPZ con curcumina, β-caroteno y cloranfenicol, frente a dos controles: NPZ vacías, para comprobar el efecto del antibiótico, y nauplios alimentados con microalgas, para verificar el tiempo de entrada y llenado del tracto digestivo, realizádose muestreos a diferentes tiempos (30, 60, 120 min). Previamente los nauplios recién eclosionados se cultivaron a 25ºC, con aireación y fotoperiodo continuo, y alimentados con microalgas. Los resultados del estudio mostraron que las NPZ fueron ingeridas por los nauplios y no afectaron a su talla tras 2h de exposición. Las NPZ con cloranfenicol provocaron un retraso del crecimiento bacteriano, demostrando el efecto del antibiótico, y verificando la efectividad de su encapsulación al mantenerse activo en el interior del tracto digestivo de los nauplios. Estos resultados revelan la efectividad de las NPZ para la encapsulación de antibióticos y sustancias bioactivas y su vehiculación mediante nauplios de Artemia para su aplicación en larvicultura.

Nowadays, Artemia nauplii are the live food most used in larviculture, although their content of long-chain polyunsaturated fatty acids is insufficient to cover all the nutritional requirements of larval fish and crustaceans. These deficiencies have been addressed through the vehiculation of said compounds and other substances (antibiotics and bioactives) through the nauplii. The main objective of this work has been to explore the use of zein nanoparticles (NPZ) as an encapsulation system for bioactive and antibiotics to their exploitation in larviculture. In the present study, nauplii of Artemia franciscana of 24h of age were exposed to NPZ with curcumin, β-carotene and chloramphenicol, against two controls: empty NPZ, to prove the effect of the antibiotic, and nauplii fed with microalgae, to verify the time of entry and filling of the digestive tract, taking samples at different times (30, 60, 120 min). Previously, the newly hatched nauplii were cultivated at 25ºC, with aeration and continuous photoperiod and they have been fed with microalgae. The results showed that the NPZ were ingested by the nauplii and they didn’t affect its size after two hours of exposure. The NPZ with chloramphenicol caused a delay of the bacterial growth, proving the effect of the antibiotic and verifying the effectiveness of its encapsulation to remain active inside the digestive tract of the nauplii. These results reveal the effectiveness of the NPZ for the encapsulation of antibiotics and bioactive substances and their vehiculation by Artemia nauplii for its application in larviculture.

Ciencias del Mar

Country
Spain
Keywords

Bioactives, 2510.92 Acuicultura Marina, Nauplios, Nauplii, Artemia franciscana, Nanopartículas de zeína, Zein nanoparticles, Bioactivos

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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