v. 34 n. 1 (2021): Revista ION
Artigos

Hidrólise enzimática de capimmaralfalfa (Pennisetum sp) submetida a extrusão úmida

Ligia Johana Jaimes Cruz
Universidad Nacional de Colombia
Cristian Adoni Menjivar Dominguez
Universidad Nacional de Agricultura de Honduras
Elsy Valeska Montoya Almendarez
Universidad Nacional de Agricultura de Honduras
Esdras Omar Mendoza Orellana
Universidad Nacional de Agricultura de Honduras
Héctor Jairo Correa Cardona
Universidad Nacional de Colombia
Ángel Giraldo Mejía
Universidad Nacional de Colombia
Ángela Adriana Ruíz
Universidad Nacional de Colombia

Publicado 2021-05-26

Palavras-chave

  • Bagaço,
  • Biomassa,
  • Deslignificação,
  • Fibra,
  • In vitro

Como Citar

Jaimes Cruz, L. J., Menjivar Dominguez, C. A., Montoya Almendarez, E. V., Mendoza Orellana, E. O., Correa Cardona, H. J., Mejía, Ángel G., & Ruíz, Ángela A. (2021). Hidrólise enzimática de capimmaralfalfa (Pennisetum sp) submetida a extrusão úmida. REVISTA ION, 34(1), 111–120. https://doi.org/10.18273/revion.v34n1-2021009

Resumo

Foi avaliado o efeito da extrusão do capim maralfalfa (Pennisetum sp) na composição química da parede celular e a digestibilidade in vitro da matéria seca e da fibra em detergente neutro. Sete amostras (10,0 kg/amostra) foram coletadas do mesmo lote, com 51 dias de recrescimento, e picadas 2 cm. Três deles, tomados ao acaso, foram processados frescos em uma extrusora de rosca cônica girando a 1050 rpm e com saída de 3 mm, enquanto os outros quatro foram no mesmo equipamento com saída de 1 mm. Nas amostras do capim fresco e dos bagaços da extrusão, foram determinados o teor de fibra em detergente neutro, fibra em detergente ácido, lignina em detergente ácido, digestibilidade in vitro da
matéria seca e fibra em detergente neutro. O teste T de Student foi aplicado para analisar o efeito do tipo de tratamento, tanto entre eles como em relação ao capim fresco. Os resultados indicam que, em relação ao capim fresco, a extrusão gerou um bagaço com alto teor de fibra em detergente neutro, aumentou a digestibilidade in vitro da matéria seca em 8,81% e a da fibra em detergente neutro em 20,6%, mas não diferiu devido ao tamanho da saída da extrusora (p<0,1). Conclui-se que o processo de extrusão aplicado ao capim-maralfalfa neste experimento melhora a digestibilidade da matéria seca e da fibra em detergente neutro.

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