Sub-critical water hydrolysis of hog hair for amino acid production

Esteban, M.B.; García, A.J.; Ramos, P.; Márquez, M. Carmen

doi:10.1016/j.biortech.2009.11.054

Cited by 53 publications

(19 citation statements)

References 18 publications

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“…Este decremento se debe al rompimiento de algunos enlaces disulfuro, en la molécula de la queratina del pelo. Valores similares en el contenido de nitrógeno (11-15 %) han sido reportados para pelo bovino crudo (Brebu y Spiridion, 2011;Galarza et al, 2007;Sánchez-Olivares et al, 2017) y de 15.07 % en pelo porcino crudo (Esteban et al, 2010). Para cabello humano, valores entre 14-16 % de nitrógeno, 49-50 % de carbono, 5-7 % de hidrógeno, 3-5 % de azufre y 22-30 % de oxígeno (Brebu y Spiridion, 2011;Horvath, 2009;Popescu y Höcker, 2007) han sido reportados.…”

Section: Resultados Y Discusiónunclassified

“…El valor determinado en este parámetro fue muy similar entre las muestras de pelo bovino y HPAH, se observó en el intervalo de 4.3 a 5.2 %. Sin embargo, difieren con lo reportado por Vázquez et al (2008) y Esteban et al (2010) de 7.3 % y 0.85 % respectivamente, para pelo porcino. Tal diferencia puede deberse a la procedencia del pelo analizado y, así mismo, a la forma en que fue preparada la muestra.…”

Section: Resultados Y Discusiónunclassified

“…En este contexto, el valor obtenido para PBNC, PBRC y PBRH se encontró en el intervalo 2.09-2.20 %. Mientras que, para pelo porcino crudo, valores de 0.73-1.14 % (Esteban et al, 2010;Vázquez et al, 2008) y para harina de plumas de aves (cruda e hidrolizada), se reportan valores comprendidos entre 1.49-2.66 % (FEDNA, 2012;Rostagno et al, 2017;Tesfaye et al, 2017). Esto es bueno, pues según la FEDNA (2012), valores mayores a 3.4 %, serían indicativo de presencia de arena o adulterantes inorgánicos.…”

Section: Resultados Y Discusiónunclassified

“…Contenido total de aminoácidos en el pelo bovino (% en materia natural). Por otra parte, comparando con lo obtenido por Esteban et al (2010), existen diferencias significativas con respecto al PBRH. En primera instancia, obtuvieron un hidrolizado acuoso, mediante la hidrólisis de pelo porcino vía subcrítica (200-300 °C, 15-360 min).…”

Section: Conclusionesunclassified

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Reciclado de subproductos de origen animal: Composición y valor nutritivo del pelo bovino hidrolizado hidrotérmicamente

et al. 2020

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[Introducción]: El pelo bovino, subproducto del proceso de trasformación de pieles, es rico en proteína queratina. Sin embargo, es poco aprovechado y su disposición final, generalmente, es el relleno sanitario. [Objetivo]: Este trabajo promueve su reciclado, a través de su transformación a un producto alimenticio para animales, aplicando un proceso de hidrólisis hidrotérmica. [Metodología]: Para ello, el pelo fue recolectado en una tenería local, lavado, molido (<0.84 mm) e hidrolizado (130 °C/2.0 atm/90 min). Después, se caracterizó en su análisis elemental, termogravimétrico, proximal y calidad microbiológica. La presencia de metales pesados y minerales, fue determinado mediante espectrometría de emisión atómica de plasma acoplado por inducción y el perfil de aminoácidos mediante cromatografía de líquidos de alta resolución. [Resultados]: Con el proceso propuesto, dicho material quedó libre de olor desagradable y textura suave y homogénea. Su estabilidad térmica fue menor a 170 °C. Presentó un contenido elemental de nitrógeno (13.80±0.61 %), carbono (46.23±1.18 %) y azufre (2.00±0.13 %). El análisis proximal reveló las siguientes composiciones (%): proteína bruta (85.2±2.5), digestible en pepsina (71.36±2.9), ceniza (2.20±0.1), extracto etéreo (4.90±0.4), extracto libre de nitrógeno (0.17±0.01) y humedad (7.53±0.2). Algunos minerales fueron encontrados (calcio, potasio, fósforo). Metales pesados y salmonella spp no fueron detectados. Se obtuvieron aminoácidos esenciales para la nutrición animal (lisina, metionina, treonina, arginina y valina), con recuperaciones mayores al 90 %. [Conclusiones]: Con base en esta información, el pelo bovino residual puede ser reciclado, a las condiciones propuestas, para su transformación a un producto alimenticio alternativo, que provee nutrientes para animales.

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Section: Conclusionesunclassified

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Reciclado de subproductos de origen animal: Composición y valor nutritivo del pelo bovino hidrolizado hidrotérmicamente

et al. 2020

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“…Gaseous fuels such as hydrogen and methane, also can be produced from cellulose, lignocelluloses, and lignin-containing biomass materials by using subcritical hydrothermal treatment (Zhu et al 2011). Furthermore, this technology is also effective for producing amino acids from protein-rich biomass feedstock, such as bovine serum albumin (Rogalinski et al 2005), deoiled rice bran (Sereewatthanawut et al 2008), soybean meal (Watchararuji et al 2008), fish waste (Zhu et al 2008), and hog hair (Esteban et al 2010). However, the complex components in gas and liquid extracts collected from the hydrothermal treatment require further purification and separation.…”

Section: Introductionmentioning

confidence: 99%

Subcritical Water Hydrolysis Treatment of Waste Biomass for Nutrient Extraction

Tu¹,

Huang²,

Xu³

et al. 2016

BioResources

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Nutrients were extracted from corn stalks, peanut shells, de-oiled peanut meal, chicken manure, and sewage sludge by a subcritical water (SCW) hydrolysis reaction. Compared with the other feedstock, the aqueous phases extracted from de-oiled peanut meal showed the highest watersoluble organic carbon, amino acid, total nitrogen, and phosphorus contents. The effects of solution pH, final hydrothermal temperature, and reaction time on nutrient extraction from de-oiled peanut meal were investigated. The analysis showed that alkaline reagents promoted liquefaction. The highest yield of the total primary nutrients (82.6%) was obtained with extraction reaction at 180 °C for 1.5 h using 0.1 mol/L KOH. The liquid fraction from this reaction was investigated for its potential use as a fertilizer with germination experiments. A higher germination index and root activity were obtained using the liquid extract with the appropriate dilution. These results indicated that subcritical water hydrothermal treatment is a viable way to recover nutrients from biomass wastes. In addition, de-oiled peanut meal is a suitable feedstock for the production of nutrient-rich liquid extract.

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A novel method of flash‐hydrolysis assisted pigment extraction (carotenoids) from microalgae biomass

Khandual,

Pokharel,

Rathore

et al. 2024

Biofuels Bioprod Bioref

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The human body can easily convert β‐carotene into retinol (a precursor of vitamin A), a significant ingredient in dietary supplements. The need for commercial natural pigment production, including β‐carotene, has led to intensive research in this area. Processing after biosynthesis is a vital stage that involves the use of nontoxic solvents, efficient mechanical disruption of cells, and the isolation of the required compounds. With the growing popularity of green extraction methods and the increasing market demand for carotenoids due to their health benefits, the use of clean, nontoxic, flash‐hydrolyzed biomass for carotenoid production presents a significant advantage. Furthermore, the remaining biomass can serve as a protein source for animal feed, thereby aligning with the principles of the biorefinery concept. In this study, our aim was to optimize the disruption of cells in two microalgal species using flash hydrolysis (FH). We applied two distinct levels of pressure and four separate temperature conditions over a brief residence time. Following this, we employed an ethanol extraction method to assess the efficiency of carotenoid pigment extraction. Flash hydrolysis is a chemical‐free subcritical water‐based continuous‐flow process, injected with wet biomass slurry at a high temperature (150–250 °C) for a very short time (8–12 s) to obtain bioproducts. In this study, we discovered that the pigment β‐carotene constituted 0.04 to 0.3% of the dry biomass in the case of Chlorella vulgaris. Bands of lutein and zeaxanthin were also observed in the thin layer chromatography (TLC) analysis of the treated slurry. This was achieved under conditions of an effective temperature of 200 °C and a pressure of 1700 psi. The Arthrospira platensis (1Tex), β‐carotene yield was 0.014 to 0.021% of dry biomass. Some lutein and zeaxanthin bands were also found in the treated slurry with an effective temperature of 150 °C and 1000 psi pressure. This study reports pigment extraction by FH for the first time. It is a viable process to scale up high‐value natural products like carotenoids from microalgae at the industrial level without adverse environmental impacts. Due to low residence time, the temperature does not have a negative effect on pigments; cell rupture was accomplished effectively using water as a solvent. A considerable amount of pigment could be recovered from microalgae at specific combinations of temperature and pressure depending on the type of cell wall that microalgae possess.

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Sub-critical water hydrolysis of hog hair for amino acid production

Cited by 53 publications

References 18 publications

Reciclado de subproductos de origen animal: Composición y valor nutritivo del pelo bovino hidrolizado hidrotérmicamente

Reciclado de subproductos de origen animal: Composición y valor nutritivo del pelo bovino hidrolizado hidrotérmicamente

Subcritical Water Hydrolysis Treatment of Waste Biomass for Nutrient Extraction

A novel method of flash‐hydrolysis assisted pigment extraction (carotenoids) from microalgae biomass

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