Papers by Adenise L Woiciechowski
Indian Journal of …, 2003
Gas biofiltration is a relatively new technology used to purify contaminated air from volatile or... more Gas biofiltration is a relatively new technology used to purify contaminated air from volatile organic and inorganic compounds (VOCs and VIes). This biotechnological process is now gaining popularity among industries due to its low cost, operational simplicity, removal efficiency, comprehension, modeling and mainly because it is intrinsically clean, as it reduces or eliminates the need for additional treatment of the end-products. Since 1980s different chemical processes have been utilizing biofiltration with different flow rates, up to 200 thousand m 3 hr', Technologies considered being forms of biological gas purification include bioscrubbers, biotrickling filters and biofilters, operating with the same fundamental mechanisms of biodegradation. Biofilters, subject of this review, can be regarded as solid fermenters, The polluted gas is forced to flow through a bed packed support on which microorganisms are immobilized or attached as a biofilm. As a biological purification process, it is based on the ability of microorganisms to degrade organic and inorganic compounds, and their complete oxidation to generate energy. This review describes and evaluates some techniques, apparatus and support media used for biofiltration of gases, focusing industrial applications. The encapsulation of microbial cells has also been considered.
Industrial Crops and Products, Dec 1, 2016
The lignin is the most important renewable source of aromatic compounds on earth. It could repres... more The lignin is the most important renewable source of aromatic compounds on earth. It could represent up to 40% of dry matter in a biomass, however, its potential is underestimated being used as heat recovery source in industrial processes. Therefore, this work aimed to show the chemical feature of lignin isolated from sequential acid-alkaline pretreatment of oil palm empty fruit bunches. The extracted lignin was subjected to studies of this thermal behavior and biological properties as antioxidant, antimicrobial, and antidiabetic. The 2D HSQC spectroscopy analysis showed syringyl aromatic structure and presence of aromatic rings in lignin. The antioxidant assay showed that 2 mg of lignin were required to inhibit 50 wt.% DPPH, while the antimicrobial test inhibited the growth of Escherichia coli, Salmonella enterica serovar thyphimurium, Bacillus subtilis and Staphyloccocus aureus. The antidiabetic assay revealed inhibition of 20% of ␣-amylase activity. The thermogravimetric analysis gave out two peaks of decomposition at 230 • C and 350 • C and the glass transition temperature at 70 • C. These results showed the potential of lignin as precursor of chemicals of added value in a biorefinery process using as feedstock oil palm empty fruit bunches.
Journal of Cleaner Production, Sep 1, 2018
The oil palm empty fruit bunches (OPEFB) are the largest solid residues generated in the oil palm... more The oil palm empty fruit bunches (OPEFB) are the largest solid residues generated in the oil palm processing. At present, OPEFB is considered one of the most important lignocellulosic materials for producing chemicals and fuels, however, because of their recalcitrance, there are necessary pretreatment steps for solubilization of monomeric sugars. Three pretreatment configurations, sequential acid/alkaline, steam explosion with alkaline delignification and steam explosion without delignification, for co-production of ethanol, xylitol, and lignin using OPEFB as feedstock were analyzed. The pretreatment performance was analyzed as a function of the yearly total profit and the net energy value (NEV). Sensibility analysis was carried out taking into consideration 7 cases by varying the price of ethanol, xylitol, and lignin in accordance with commercial price and data reported in the literature. The results showed that sequential steam explosion followed by alkaline delignification, presented the largest yearly profit for all the cases analyzed, followed by acid/alkaline treatment. The positive economic profit was attributed to the production of M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 2 xylitol and lignin. While the steam explosion presented negative yearly profit, this pretreatment presented the highest energy positive NEV of 9.9 MJ•kg-1 OPEFB treated. These results showed that the use of OPEFB as a potential feedstock for biorefinery process could be feasible if all the fractions obtained in pretreatment stages are valorized.
Biotechnology Research and Innovation, 2017
After forty years of research development, an overview of solid-state fermentation (SSF), focusin... more After forty years of research development, an overview of solid-state fermentation (SSF), focusing on its applications, mainly of the very recent papers of the last five years, is presented. This review comprises the most important developed processes concerning the production of enzymes, biopulping processes, and traditional processes, for food fermentation, such as the production of Chinese daqu and koji, and industrial important biomolecules such as organic acids, pigments, phenolic compounds, aromas and biosorbents. SSF bioreactors design that has been developed is reported, so as the solutions for the classical drawbacks and the most important cases of successful employment of the technique are described. And, finally, it is summarized a very interesting report of patents and innovations regarding SSF products and processes.
Journal of Cleaner Production, Aug 1, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Fermentation, Jan 20, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Industrial Crops and Products, Nov 1, 2021
Abstract The soybean is an important crop in the world, where soybean hull (SH) comprehends 8–10 ... more Abstract The soybean is an important crop in the world, where soybean hull (SH) comprehends 8–10 % of grain dry matter. SH is rich in carbohydrates, mainly in holocellulose fibers, showing to be a promising bio-based material to generate new bio-products. Imidazole is a promissing solvent for pretreatment of lignocellulosic biomass due its delignificant and depolymerizing power. Besides, this reagent presents low to moderate toxicity against many classes of living organisms. Thus, the thermochemical conversion of SH into fermentable sugars using imidazole was carried out at 120 °C for 1 h. The objective of this work was to use a more sustainable pretreatment reagent for the co-production of second-generation bioethanol and succinic acid from soybean hull. After pretreatment, the solid yield was 57.1 wt.%, consisting principally of cellulose. The cellulose-rich fraction was further hydrolyzed using commercial enzymes and achieving 89.9 wt.% and 95.6 wt.% of glucose and xylose yields, respectively. The hydrolysate was fermented using two yeasts: Saccharomyces cerevisiae and Pichia stipitis. Approximately, from 1 ton of SH, it was estimated that 124.0 kg of bioethanol and 36.5 kg of succinic acid could be obtained using S. cerevisiae, while P. stipitis could achieve productions of 116.2 kg of bioethanol and 20.4 kg of the organic acid. This study demonstrated the co-production of biomolecules of industrial interests, carrying out a more environmentally friendly pretreatment process.
Journal of Biotechnology and Biodiversity, Feb 4, 2014
The present work is a revision about neural networks. Initially presents a little introduction to... more The present work is a revision about neural networks. Initially presents a little introduction to neural networks, fuzzy logic, a brief history, and the applications of Neural Networks on Biotechnology. The chosen sub-areas of the
Editora Blucher eBooks, Jan 31, 2017
O elevado consumo de combustíveis fósseis, especialmente dos produtos derivados do petróleo, tem ... more O elevado consumo de combustíveis fósseis, especialmente dos produtos derivados do petróleo, tem gerado graves problemas ambientais. Alguns dos principais fatores das mudanças climáticas são causados pelas emissões de gases do efeito estufa (green house gases-GHG), tais como gás carbônico
Bioresource Technology, Dec 1, 2021
The generation of agroindustrial byproducts is rising fast worldwide. The slaughter of animals, t... more The generation of agroindustrial byproducts is rising fast worldwide. The slaughter of animals, the production of bioethanol, and the processing of oil palm, cassava, and milk are industrial activities that, in 2019, generated huge amounts of wastewaters, around 2448, 1650, 256, 85, and 0.143 billion liters, respectively. Thus, it is urgent to reduce the environmental impact of these effluents through new integrated processes applying biorefinery and circular economy concepts to produce energy or new products. This review provides the characteristics of some of the most important agro-industrial wastes, including their physicochemical composition, worldwide average production, and possible environmental impacts. In addition, some alternatives for reusing these materials are addressed, focusing mainly on energy savings and the possibilities of generating value-added products. Finally, this review considers recent research and technological innovations and perspectives for the future.
Bioresource Technology, Aug 1, 2019
Oil palm empty fruit bunches is a lignocellulosic feedstock with biotechnological potential and t... more Oil palm empty fruit bunches is a lignocellulosic feedstock with biotechnological potential and thousands of tons are generated in the world each year. Filamentous fungi producing xylanases and ligninases in biopulping to obtain cellulose is a pulp improvement alternative. The enzymatic cocktail was produced in solid-state biopulping by Aspergillus sp. LPB-5 with 54.32 U/g xylanase, 13.41 U/g lignin peroxidase and low cellulase activity. Biological, thermal and chemical pretreatments were compared and enzymatic biobleaching was applied to pretreated pulps. Biopulping and biobleaching combination had 36.80% lignin loss, 26.27% hemicellulose reduction, 74.36% pulp yield with 36.56% digestibility. Alkaline and biobleaching combination removed 81.97% hemicellulose and 93.89% lignin with 73.59% digestibility. Enzymatic biobleaching increased the pulp digestibility in all pretreatments. Finally, the development of a bio-pretreatment to remove hemicellulose and alter the lignin-carbohydrate complex interface presented a soft process with great ecofriendly potential, where mild pre-treatments would reduce the use of aggressive agents.
Bioresource Technology, May 1, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Bioresource Technology, 2021
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
International journal of phytocosmetics and natural ingredients, Dec 31, 2016
Phytocosmetics are increasingly gaining attention from consumers who search for alternatives for ... more Phytocosmetics are increasingly gaining attention from consumers who search for alternatives for the maintenance and protection of the skin. This article reports formulation of a phytocosmetic derived from defatted soybean flour, an emulsion base that is hydrolyzed from the glycinin protein (1000 µg/g). Test for stability, microbiological control and biological activities antimicrobial (agar diffusion method), antioxidant (method of ABTS/TEAC radicals) and anti-inflammatory (method of hyaluronidase enzyme) properties were conducted. The results indicated that the phytocosmetic was stable and had low indices of microorganisms, according to Resolution 481/99. The bioactivity of the glycinin peptides was not altered or harmed by the other components of the emulsion. For the antimicrobial activity, the bacteria E. coli, S. aureus and P. acnes had values of 30.5 mm, 28 mm and 25 mm halos, respectively. For the antioxidant activity, the result was of 25.1 TEAC and the anti-inflammatory activity was measured at 83.4% inhibition of hyaluronidase enzyme. This study showed that the formulated phytocosmetic has great potential for topical use; it is comparable to other anti-aging cosmetics for daily skin care with antioxidant, anti-inflammatory and antimicrobial properties.
Journal of Environmental Management
Fermentation
Recycling bioresources is the only way to sustainably meet a growing world population’s food and ... more Recycling bioresources is the only way to sustainably meet a growing world population’s food and energy needs. One of the ways to do so is by using agro-industry wastewater to cultivate microalgae. While the industrial production of microalgae requires large volumes of water, existing agro-industry processes generate large volumes of wastewater with eutrophicating nutrients and organic carbon that must be removed before recycling the water back into the environment. Coupling these two processes can benefit the flourishing microalgal industry, which requires water, and the agro-industry, which could gain extra revenue by converting a waste stream into a bioproduct. Microalgal biomass can be used to produce energy, nutritional biomass, and specialty products. However, there are challenges to establishing stable and circular processes, from microalgae selection and adaptation to pretreating and reclaiming energy from residues. This review discusses the potential of agro-industry residu...
Biomass, Biofuels, Biochemicals
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Papers by Adenise L Woiciechowski