Influência do uso de óleo essencial de eugenol e de manjericão (Ocimum basilicum) na água de transporte pré-abate de tilápias criadas pela agricultura familiar

Autor: Schroder , Chaiana Schaffer
Přispěvatelé: Santos , Lilian Dena dos, Silva, Lilian Carolina Rosa da, Afonso , André Muniz
Jazyk: portugalština
Rok vydání: 2021
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações do UNIOESTE
Universidade Estadual do Oeste do Paraná (UNIOESTE)
instacron:UNIOESTE
ISSN: 2199-4242
Popis: Submitted by Helena Bejio (helena.bejio@unioeste.br) on 2021-04-28T21:05:19Z No. of bitstreams: 1 Dissertacao-Chaiana-Schroder-versaofinal.pdf: 1772349 bytes, checksum: 6b219942427d4777791c2f7e6ecb3df8 (MD5) Made available in DSpace on 2021-04-28T21:05:20Z (GMT). No. of bitstreams: 1 Dissertacao-Chaiana-Schroder-versaofinal.pdf: 1772349 bytes, checksum: 6b219942427d4777791c2f7e6ecb3df8 (MD5) Previous issue date: 2021-02-19 Trying to offer animal welfare within the culture systems, which are more and more technified, the tilapiculture within the family agriculture is concerned in producing competitive products in the market with quality respecting the current laws. The objective of this study was to analyze the effect of two natural anesthetics on the quality of Nile tilapia meat when added to the transport water, in vivo, from the farm to the slaughterhouse and if the way of farming in this familiar system would present differences in the final product. For this purpose, a total of 100 adult fish, with a mean weight of 816.36 ±1.42 g, were distributed in five treatments: N: fish not transported; C: fish transported with water only (control); A: fish transported with water + anesthetic vehicle (ethanol 36µL L-1); E: fish transported with water + eugenol (20µLL-1) anesthetic vehicle; and M: fish transported with water + essential oil of Ocimum basilicum (20µL L-1 anesthetic vehicle). The fillets of 20 fish per treatment were collected to evaluate meat quality parameters. As a result, the quality of the transport water was not affected (p>0.05) during transportation between treatments, but the pH value was 4.59. There was no effect of the treatments when the colorimetry referring to yellow (b*) and luminosity (L*), shear force and water retention capacity were evaluated. For the colorimetry red on the viscera side (a*v) and red on the skin side (a*p), the highest values were determined for the fillets of treatments A and N, respectively. The pH of the fillets from fish transported with the anesthetics under study (E and M) maintained higher values. The fillets from animals in treatment N presented the lowest average percentage loss by thawing, while the highest loss by dripping was observed in treatment A, with high values, possibly due to the slow freezing method. In the chemical-bromatological composition, the averages for mineral matter (MM) showed significant difference in treatment M, the other parameters were within the normal values for the species. The fatty acid profiles were within the values for the species. The treatments did not show significant differences (p0,05) durante o transporte entre os tratamentos, porém o pH encontrado foi 4,59. Não houve efeito dos tratamentos quando avaliadas as colorimetrias referentes ao amarelo (b*) e à luminosidade (L*), a força de cisalhamento e a capacidade de retenção de água. Na colorimetria vermelha do lado vísceras (a*v) e vermelha do lado da pele (a*p), os maiores valores foram determinados para os filés dos tratamentos A e N, respectivamente. O pH dos filés dos peixes transportados com os anestésicos em estudo (E e M) mantiveram valores mais elevados. Os filés dos animais do tratamento N apresentaram a menor média percentual de perda por descongelamento, enquanto a maior perda por gotejamento foi observada no tratamento A, com elevados valores, possivelmente pela forma de congelamento lenta. Na composição química-bromatológica, as médias para matéria mineral (MM) apresentaram diferença significativa no tratamento M, os demais parâmetros ficaram dentro dos valores normais da espécie. Os perfis de ácidos graxos se mostraram dentro dos valores para a espécie. Os tratamentos não apresentaram entre si diferenças significativas (p
Databáze: OpenAIRE
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