Techno-economic assessment of subcritical water hydrolysis of brewer’s spent grains to recover xylo-oligosaccharides

Silva, Marcos Fellipe da; Zabot, Giovani L.; Goldbeck, Rosana; Mussatto, Solange I.; Forster‐Carneiro, Tânia

doi:10.1016/j.supflu.2023.105895

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…After partial or total depolymerization, it can be potentially deemed to be a source of multiple products such as bioethanol and biofuel, xylo-oligosaccharides, xylitol, sorbitol, packaging films, adsorbents, functional ingredients for foods and pharmaceuticals, production of bioplastics and biocomposites, and so forth. 7,8 Lignin can be used as a source of value-added chemicals such as hydroxycinnamic acids or phenolic antioxidants, and as a starting material for a series of products including dispersant, emulsificant and chelant agents, activated charcoal, adhesives and fertilizers. 9 Lignin is also being currently conceived as a building block for the manufacturing of biobased polymers, 10,11 or in bio-based biocide delivery system.…”

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confidence: 99%

Production and characterization of cellulose acetate using olive tree pruning biomass as feedstock

Rodríguez‐Liébana,

Robles‐Solano,

Jurado‐Contreras

et al. 2024

Biofuels Bioprod Bioref

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Olive tree pruning (OTP) is one of the most abundant sources of biomass waste in the Mediterranean basin. This is especially relevant in southern Spain where olive oil production represents a large part of the economy. Olive tree prunings are mostly either burned or are spread in olive orchards as an organic amendment, or used for heat generation on a domestic scale. However, the lignocellulosic composition of OTP makes it a potential source of biopolymers, thus providing an excellent economic alternative for the olive oil sector. In this work, pretreated OTP fibers were subjected to an optimized alkaline treatment followed by a single‐step bleaching reaction with H2O2. Afterwards, the cellulose pulp was transformed chemically to obtain cellulose acetate. Noncellulosic components were removed effectively from OTP, thus obtaining a pulp highly purified in cellulose with 71% crystallinity and 355 °C maximum degradation temperature. Nevertheless, a very large amount of cellulose (ca. 50%) was eliminated throughout the process, especially during acid pretreatment, which was responsible for 38% solubilization. A similar level of acetylation and degree of substitution was obtained by using acetylation times in the range of 1 to 6 h. No large differences were observed in the infrared spectra and X‐ray diffractograms of the synthesized acetates. However, their thermal stability varied significantly with reaction time, evolving from a multistep degradation pattern to a single and sharp peak between 300 and 400 °C with increasing time. Thermogravimetric curves revealed that at least 5 h (preferably 6 h) were needed to obtain cellulose acetate from OTP with adequate thermal stability for further processing.

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confidence: 99%

Production and characterization of cellulose acetate using olive tree pruning biomass as feedstock

Rodríguez‐Liébana,

Robles‐Solano,

Jurado‐Contreras

et al. 2024

Biofuels Bioprod Bioref

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“…In such cases, the main aspect for reducing the COM is negotiating a lower acquisition cost of raw materials, especially the annatto seeds and the industrial CO 2 . The high impact of raw materials on the COM of many extracts is also reported elsewhere [26][27][28]. Therefore, the impact of high-pressure equipment on the COM is not the highest, allowing the application of supercritical fluid processes at an industrial scale.…”

Section: Cost Of Manufacturing Of Extractsmentioning

confidence: 75%

Obtaining Bixin- and Tocotrienol-Rich Extracts from Peruvian Annatto Seeds Using Supercritical CO2 Extraction: Experimental and Economic Evaluation

Cárdenas-Toro,

Meza-Coaquira,

Nakama-Hokamura

et al. 2024

Foods

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Currently, Bixa orellana L. extracts are used as a color source in the food, pharmaceutical, and cosmetic industries because they are important as a potential source of antioxidant activity. The extraction is carried out by conventional methods, using alkaline solutions or organic solvents. These extraction methods do not take advantage of the lipid fraction of annatto (Bixa orellana L.) seeds, and the process is not friendly to the environment. In this work, the objective was to obtain an extract rich in nutraceuticals (bixin and tocols) of high antioxidant power from Peruvian annatto seeds as a potential source for a functional food or additive in the industry using supercritical fluid extraction (SFE). Experiments related to extraction yield, bixin, tocotrienols, tocopherols, and antioxidant activity were carried out. The SFE was performed at 40 °C, 50 °C, and 60 °C, and 100, 150, and 250 bar with 0.256 kg/h carbon dioxide as the supercritical solvent (solvent-to-feed ratio of 10.2). Supercritical extraction at 60 °C and 250 bar presented the best results in terms of global extraction yield of 1.40 ± 0.01 g/100 g d.b., extract concentration of 0.564 ± 0.005 g bixin/g extract, 307.8 mg α-tocotrienol/g extract, 39.2 mg β-tocotrienol/g extract, 2 mg γ-tocopherol/g extract, and IC50 of 989.96 μg extract/mL. Economical evaluation showed that 60 °C, 250 bar, and 45 min presented the lowest cost of manufacturing (2 × 2000 L, COM of USD 212.39/kg extract). This extract is a potential source for functional food production.

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“…Sganzerla et al [ 107 ] evaluated the TEA of XOS production from BSG in a single and two sequential flow-through subcritical water hydrolysis (SWH) reactors at different temperatures (80 and 180 °C). The lowest cost of manufacturing (18.36 USD/kg of XOS) was obtained for the process with two sequential reactors.…”

Section: Xos In Biorefinery Platforms and Market Opportunitiesmentioning

confidence: 99%

Xylooligosaccharides: A Bibliometric Analysis and Current Advances of This Bioactive Food Chemical as a Potential Product in Biorefineries’ Portfolios

Manicardi

Silva

Longati

et al. 2023

Foods

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Xylooligosaccharides (XOS) are nondigestible compounds of great interest for food and pharmaceutical industries due to their beneficial prebiotic, antibacterial, antioxidant, and antitumor properties. The market size of XOS is increasing significantly, which makes its production from lignocellulosic biomass an interesting approach to the valorization of the hemicellulose fraction of biomass, which is currently underused. This review comprehensively discusses XOS production from lignocellulosic biomass, aiming at its application in integrated biorefineries. A bibliometric analysis is carried out highlighting the main players in the field. XOS production yields after different biomass pretreatment methods are critically discussed using Microsoft PowerBI® (2.92.706.0) software, which involves screening important trends for decision-making. Enzymatic hydrolysis and the major XOS purification strategies are also explored. Finally, the integration of XOS production into biorefineries, with special attention to economic and environmental aspects, is assessed, providing important information for the implementation of biorefineries containing XOS in their portfolio.

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Techno-economic assessment of subcritical water hydrolysis of brewer’s spent grains to recover xylo-oligosaccharides

Cited by 8 publications

References 47 publications

Production and characterization of cellulose acetate using olive tree pruning biomass as feedstock

Production and characterization of cellulose acetate using olive tree pruning biomass as feedstock

Obtaining Bixin- and Tocotrienol-Rich Extracts from Peruvian Annatto Seeds Using Supercritical CO2 Extraction: Experimental and Economic Evaluation

Xylooligosaccharides: A Bibliometric Analysis and Current Advances of This Bioactive Food Chemical as a Potential Product in Biorefineries’ Portfolios

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