scholarly journals Biorefinery of lignocellulosic biopolymers

2016 ◽  
Vol 2 (1) ◽  
pp. 79 ◽  
Author(s):  
Bruna Steil Boneberg ◽  
Grazielle Dias Machado ◽  
Davi Friedrich Santos ◽  
Fernando Gomes ◽  
Douglas José Faria ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Lignocellulosic Biomass ◽  
Value Added ◽  
Renewable Sources ◽  
Renewable Source ◽  
Different Types ◽  
Historic Background ◽  
Made In ◽  
Value Added Products

Lignocellulosic biomass has been widely investigated as a natural renewable source of feedstocks to produce high value added products which can replace energy and materials obtained from non-renewable sources. Polymers are products largely employed in industry in many different applications, which nowadays are mostly produced from petrochemical derivatives, generating huge amounts of waste of difficult treatment prior to disposal. In order to replace these polymers derived from petroleum, efforts have been made in the development of biopolymers, in the biorefinery context, derived from biomass possessing physicochemical properties similar to those derived from petroleum so that they can successfully replace these materials. A review on the different types of biopolymers obtained from biomass, as polysaccharides, lipids, proteins, polyesters produced by plants and microorganisms, and other assorted biopolymers is accomplished. An evaluation of physicochemical properties and applications of different types of biopolymers is approached. It is also discussed about the degradability of biopolymers differentiating oxo-degradability and biodegradability. A brief historic background about biopolymers is also exposed.

scholarly journals Lignosulphonates as an Alternative to Non-Renewable Binders in Wood-Based Materials

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4196
Author(s):  
Sofia Gonçalves ◽  
João Ferra ◽  
Nádia Paiva ◽  
Jorge Martins ◽  
Luísa H. Carvalho ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Aromatic Ring ◽  
Phenol Formaldehyde ◽  
Urea Formaldehyde ◽  
Value Added ◽  
Wood Adhesives ◽  
Renewable Source ◽  
Pressing Time ◽  
Value Added Products ◽  
Total Market

Lignin is a widely abundant renewable source of phenolic compounds. Despite the growing interest on using it as a substitute for its petroleum-based counterparts, only 1 to 2% of the global lignin production is used for obtaining value-added products. Lignosulphonates (LS), derived from the sulphite pulping process, account for 90% of the total market of commercial lignin. The most successful industrial attempts to use lignin for wood adhesives are based on using this polymer as a partial substitute in phenol-formaldehyde or urea-formaldehyde resins. Alternatively, formaldehyde-free adhesives with lignin and lignosulphonates have also been developed with promising results. However, the low number of reactive sites available in lignin’s aromatic ring and high polydispersity have hindered its application in resin synthesis. Currently, finding suitable crosslinkers for LS and decreasing the long pressing time associated with lignin adhesives remains a challenge. Thus, several methods have been proposed to improve the reactivity of lignin molecules. In this paper, techniques to extract, characterize, as well as improve the reactivity of LS are addressed. The most recent advances in the application of LS in wood adhesives, with and without combination with formaldehyde, are also reviewed.

scholarly journals New Generation Urban Biorefinery toward Complete Utilization of Waste Derived Lignocellulosic Biomass for Biofuels and Value-Added Products

2019 ◽  
Vol 158 ◽  
pp. 918-925 ◽  
Author(s):  
Chengyu Dong ◽  
Ying Wang ◽  
Huaimin Wang ◽  
Carol Sze Ki Lin ◽  
Hsien-Yi Hsu ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Value Added ◽  
Complete Utilization ◽  
New Generation ◽  
Value Added Products

scholarly journals Discovering Niche Markets: A Comparison of Consumer Willingness to Pay for Local (Colorado Grown), Organic, and GMO-Free Products

2002 ◽  
Vol 34 (3) ◽  
pp. 477-487 ◽  
Author(s):  
Maria L. Loureiro ◽  
Susan Hine
Keyword(s):  
Willingness To Pay ◽  
Consumer Preferences ◽  
Value Added ◽  
Sociodemographic Characteristics ◽  
Niche Markets ◽  
Free Products ◽  
Different Types ◽  
Value Added Products

Demand for value-added products is highly segmented among different types of consumers. In this article, we assess consumer preferences for local, organic, and GMO-free potatoes in order to discover their potential niche markets. We identify sociodemographic characteristics that affect consumer preferences and compare the effects of different attributes on consumers' willingness to pay. Results suggest that the attribute “Colorado grown” carries a higher willingness to pay than organic and GMO-free attributes.

Mushroom Cultivation, Processing and Value-added Products: A Patent Based Review

2019 ◽  
Vol 10 (1) ◽  
pp. 3-19 ◽  
Author(s):  
Somya Singhal ◽  
Prasad Rasane ◽  
Sawinder Kaur ◽  
Umar Garba ◽  
Jyoti Singh ◽  
...  
Keyword(s):  
Value Added ◽  
Edible Mushrooms ◽  
Mushroom Cultivation ◽  
Processing Equipment ◽  
General Overview ◽  
Edible Fungus ◽  
Cultivation Practices ◽  
Nutraceutical Properties ◽  
Made In ◽  
Value Added Products

Background: Edible mushrooms are an abundant source of carbohydrates, proteins, and multiple antioxidants and phytonutrients. This paper presents a general overview on the edible fungus describing the inventions made in the field of its cultivation, equipment and value-added products. </P><P> Objective: To understand and review the innovations and nutraceutical benefits of mushrooms as well as to develop interest regarding the edible mushrooms. </P><P> Methods: Information provided in this review is based on the available research investigations and patents. </P><P> Result: Mushrooms are an edible source of a wide variety of antioxidants and phytonutrients with a number of nutraceutical properties including anti-tumor and anti-carcinogenic. Thus, several investigations are made for cultivation and improvement of the yield of mushrooms through improvisation of growth substrates and equipment used for mushroom processing. The mushroom has been processed into various products to increase its consumption, providing the health and nutritional benefit to mankind. </P><P> Conclusion: This paper summarizes the cultivation practices of mushroom, its processing equipment, methods of preservation, value-added based products, and its nutraceutical properties. The review also highlights the various scientific feats achieved in terms of patents and research publications promoting mushroom as a wholesome food.

Valorisation of lignocellulosic biomass to value-added products: Paving the pathway towards low-carbon footprint

Fuel ◽  
2021 ◽  
pp. 122678
Author(s):  
G. Velvizhi ◽  
Chandamita Goswami ◽  
Nagaraj P. Shetti ◽  
Ejaz Ahmad ◽  
Kamal Kishore Pant ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Carbon Footprint ◽  
Value Added ◽  
Low Carbon ◽  
Value Added Products

Nitrogen-doped metal-free carbon catalysts for (electro)chemical CO2 conversion and valorisation

2019 ◽  
Vol 48 (36) ◽  
pp. 13508-13528 ◽  
Author(s):  
Diana M. Fernandes ◽  
Andreia F. Peixoto ◽  
Cristina Freire
Keyword(s):  
Electrochemical Reduction ◽  
Carbon Materials ◽  
Value Added ◽  
Co2 Conversion ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Recent Developments ◽  
Carbon Catalysts ◽  
Made In ◽  
Value Added Products

This review focuses on the recent developments made in the fabrication of N-doped carbon materials for enhanced CO2 conversion and electrochemical reduction into high-value-added products.

scholarly journals Development of ‘Lignin-First’ Approaches for the Valorization of Lignocellulosic Biomass

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2815 ◽  
Author(s):  
Tamás I. Korányi ◽  
Bálint Fridrich ◽  
Antonio Pineda ◽  
Katalin Barta
Keyword(s):  
Lignocellulosic Biomass ◽  
Structural Modification ◽  
Complex Structure ◽  
Value Added ◽  
Original Structure ◽  
Reaction Conditions ◽  
The Past ◽  
Pulp Paper ◽  
New Strategy ◽  
Value Added Products

Currently, valorization of lignocellulosic biomass almost exclusively focuses on the production of pulp, paper, and bioethanol from its holocellulose constituent, while the remaining lignin part that comprises the highest carbon content, is burned and treated as waste. Lignin has a complex structure built up from propylphenolic subunits; therefore, its valorization to value-added products (aromatics, phenolics, biogasoline, etc.) is highly desirable. However, during the pulping processes, the original structure of native lignin changes to technical lignin. Due to this extensive structural modification, involving the cleavage of the β-O-4 moieties and the formation of recalcitrant C-C bonds, its catalytic depolymerization requires harsh reaction conditions. In order to apply mild conditions and to gain fewer and uniform products, a new strategy has emerged in the past few years, named ‘lignin-first’ or ‘reductive catalytic fractionation’ (RCF). This signifies lignin disassembly prior to carbohydrate valorization. The aim of the present work is to follow historically, year-by-year, the development of ‘lignin-first’ approach. A compact summary of reached achievements, future perspectives and remaining challenges is also given at the end of the review.

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