Biological Pretreatment Effects on the Bioconversion of Brewer Spent Grain with Hermetia illucens Larvae

Martha Sumba-Zhongor; Eduardo Álava; Luis Galarza; Johana Ortiz-Ulloa; Eduardo J. Chica; Omar Ruiz-Barzola; Julia Nieto-Wigby; Maria Isabel Jiménez-Feijoo; Malena Torres-Ulloa

doi:10.3390/recycling8010003

Biological Pretreatment Effects on the Bioconversion of Brewer Spent Grain with Hermetia illucens Larvae

Martha Sumba-Zhongor
, Eduardo Álava
, Luis Galarza
, Johana Ortiz-Ulloa
, Eduardo J. Chica
, Omar Ruiz-Barzola
, Julia Nieto-Wigby
, Maria Isabel Jiménez-Feijoo
, Malena Torres-Ulloa

Escuela Superior Politécnica del Litoral
Universidad de Salamanca

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Hermetia illucens is an important species for waste management and the circular economy. The aim of this study was to analyze the effects of Trichoderma reesei C2A and Pleurotus sp. as pretreatments of brewer spent grain (BSG). BSG was inoculated with fungal solution or distilled water (control). After seven days, this was used for H. illucens larvae cultivation. At the end of bioconversion process, parameters of substrate reduction and H. illucens larval development were evaluated. Chemical properties of BSG, frass and larvae were also analyzed. With T. reesei C2A pretreatment, highest substrate reduction (46.3 ± 0.9%) was achieved, but larval growth rate was lower (1.0 ± 0.1 mg/d) than that of control (2.8 ± 0.2 mg/d). Larvae of Pleurotus sp. pretreatment had limited development, reflected in their negative growth rate (−0.6 ± 0.2 mg/d). In conclusion, cultivation of H. illucens larvae (six day old) on BSG pretreated with Pleurotus sp. is not recommended. On the other hand, T. reesei C2A pretreatment enhance BSG reduction, and its potential use for lignocellulosic waste management should be more explored.

Original language	English
Article number	3
Journal	Recycling
Volume	8
Issue number	1
DOIs	https://doi.org/10.3390/recycling8010003
State	Published - Feb 2023

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 12 Responsible Consumption and Production

Keywords

Agroindustry
black soldier fly
insect protein
microbes
organic waste management

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10.3390/recycling8010003

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title = "Biological Pretreatment Effects on the Bioconversion of Brewer Spent Grain with Hermetia illucens Larvae",

abstract = "Hermetia illucens is an important species for waste management and the circular economy. The aim of this study was to analyze the effects of Trichoderma reesei C2A and Pleurotus sp. as pretreatments of brewer spent grain (BSG). BSG was inoculated with fungal solution or distilled water (control). After seven days, this was used for H. illucens larvae cultivation. At the end of bioconversion process, parameters of substrate reduction and H. illucens larval development were evaluated. Chemical properties of BSG, frass and larvae were also analyzed. With T. reesei C2A pretreatment, highest substrate reduction (46.3 ± 0.9\%) was achieved, but larval growth rate was lower (1.0 ± 0.1 mg/d) than that of control (2.8 ± 0.2 mg/d). Larvae of Pleurotus sp. pretreatment had limited development, reflected in their negative growth rate (−0.6 ± 0.2 mg/d). In conclusion, cultivation of H. illucens larvae (six day old) on BSG pretreated with Pleurotus sp. is not recommended. On the other hand, T. reesei C2A pretreatment enhance BSG reduction, and its potential use for lignocellulosic waste management should be more explored.",

keywords = "Agroindustry, black soldier fly, insect protein, microbes, organic waste management",

author = "Martha Sumba-Zhongor and Eduardo {\'A}lava and Luis Galarza and Johana Ortiz-Ulloa and Chica, \{Eduardo J.\} and Omar Ruiz-Barzola and Julia Nieto-Wigby and Jim{\'e}nez-Feijoo, \{Maria Isabel\} and Malena Torres-Ulloa",

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year = "2023",

month = feb,

doi = "10.3390/recycling8010003",

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volume = "8",

journal = "Recycling",

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T1 - Biological Pretreatment Effects on the Bioconversion of Brewer Spent Grain with Hermetia illucens Larvae

AU - Sumba-Zhongor, Martha

AU - Álava, Eduardo

AU - Galarza, Luis

AU - Ortiz-Ulloa, Johana

AU - Chica, Eduardo J.

AU - Ruiz-Barzola, Omar

AU - Nieto-Wigby, Julia

AU - Jiménez-Feijoo, Maria Isabel

AU - Torres-Ulloa, Malena

PY - 2023/2

Y1 - 2023/2

N2 - Hermetia illucens is an important species for waste management and the circular economy. The aim of this study was to analyze the effects of Trichoderma reesei C2A and Pleurotus sp. as pretreatments of brewer spent grain (BSG). BSG was inoculated with fungal solution or distilled water (control). After seven days, this was used for H. illucens larvae cultivation. At the end of bioconversion process, parameters of substrate reduction and H. illucens larval development were evaluated. Chemical properties of BSG, frass and larvae were also analyzed. With T. reesei C2A pretreatment, highest substrate reduction (46.3 ± 0.9%) was achieved, but larval growth rate was lower (1.0 ± 0.1 mg/d) than that of control (2.8 ± 0.2 mg/d). Larvae of Pleurotus sp. pretreatment had limited development, reflected in their negative growth rate (−0.6 ± 0.2 mg/d). In conclusion, cultivation of H. illucens larvae (six day old) on BSG pretreated with Pleurotus sp. is not recommended. On the other hand, T. reesei C2A pretreatment enhance BSG reduction, and its potential use for lignocellulosic waste management should be more explored.

AB - Hermetia illucens is an important species for waste management and the circular economy. The aim of this study was to analyze the effects of Trichoderma reesei C2A and Pleurotus sp. as pretreatments of brewer spent grain (BSG). BSG was inoculated with fungal solution or distilled water (control). After seven days, this was used for H. illucens larvae cultivation. At the end of bioconversion process, parameters of substrate reduction and H. illucens larval development were evaluated. Chemical properties of BSG, frass and larvae were also analyzed. With T. reesei C2A pretreatment, highest substrate reduction (46.3 ± 0.9%) was achieved, but larval growth rate was lower (1.0 ± 0.1 mg/d) than that of control (2.8 ± 0.2 mg/d). Larvae of Pleurotus sp. pretreatment had limited development, reflected in their negative growth rate (−0.6 ± 0.2 mg/d). In conclusion, cultivation of H. illucens larvae (six day old) on BSG pretreated with Pleurotus sp. is not recommended. On the other hand, T. reesei C2A pretreatment enhance BSG reduction, and its potential use for lignocellulosic waste management should be more explored.

KW - Agroindustry

KW - black soldier fly

KW - insect protein

KW - microbes

KW - organic waste management

UR - https://www.scopus.com/pages/publications/85148765460

U2 - 10.3390/recycling8010003

DO - 10.3390/recycling8010003

M3 - Artículo

AN - SCOPUS:85148765460

SN - 2313-4321

VL - 8

JO - Recycling

JF - Recycling

IS - 1

M1 - 3

ER -

Biological Pretreatment Effects on the Bioconversion of Brewer Spent Grain with Hermetia illucens Larvae

Abstract

UN SDGs

Keywords

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