Understanding physicochemical changes in pretreated and enzyme hydrolysed hemp (Cannabis sativa) biomass for biorefinery development

Abraham, Reinu E.; Vongsvivut, Jitraporn; Barrow, Colin J.; Puri, Munish

doi:10.1007/s13399-015-0168-4

Cited by 9 publications

(3 citation statements)

References 47 publications

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“…Hemp ( Cannabis sativa ) biomass is a low-cost softwood, which is mainly grown for the industrial and medicinal application [ 15 ]. Due to the outer bast fibre, it is well known for its mechanical strength, durability; and therefore has wide industrial application [ 16 ]. The inner core of hemp can be utilised as a potential source for the extraction of microfibres as it is usually considered as waste [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Enrichment of Cellulosic Waste Hemp (Cannabis sativa) Hurd into Non-Toxic Microfibres

2016

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In this study a largely available lignocellulose feedstock hemp (Cannabis sativa), obtained as an industrial waste, was used for cellulose extraction. The extraction of cellulose microfibres from hemp biomass was conducted by alkaline treatment and an acidification process. The extracted cellulose microfibres were characterised using Fourier-transformed infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The viability of the study was determined by growing human fibroblasts on the preparation which resulted in being non-toxic; indicating its potential in preparing biological scaffolds. Upon enzymatic hydrolysis of the cellulose microfibre using cellulase from Trichoderma reesei, a maximum of 909 mg/g of reducing sugars were obtained, which endorses its suitability for biofuel production.

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Section: Introductionmentioning

confidence: 99%

Enrichment of Cellulosic Waste Hemp (Cannabis sativa) Hurd into Non-Toxic Microfibres

2016

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“…Undoubtedly, the opening of the hemp biomass and creating the holes all over the biomass enhanced the enzyme accessibility of the structure and facilitated biomass digestibility [25]. Moreover, it was clearly visible that enzymatic hydrolysis of the Rajan hemp biomass made the fibrous structure fragile and was more successful.…”

Section: A) D) C) G) E)mentioning

confidence: 99%

Polish Varieties of Industrial Hemp and Their Utilisation in the Efficient Production of Lignocellulosic Ethanol

2021

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Nowadays, more and more attention is paid to the development and the intensification of the use of renewable energy sources. Hemp might be an alternative plant for bioenergy production. In this paper, four varieties of Polish industrial hemp (Białobrzeskie, Tygra, Henola, and Rajan) were investigated in order to determine which of them are the most advantageous raw materials for the effective production of bioethanol. At the beginning, physical and chemical pretreatment of hemp biomass was carried out. It was found that the most effective is the alkaline treatment with 2% NaOH, and the biomasses of the two varieties were selected for next stages of research: Tygra and Rajan. Hemp biomass before and after pretreatment was analyzed by FTIR and SEM, which confirmed the effectiveness of the pretreatment. Next, an enzymatic hydrolysis process was carried out on the previously selected parameters using the response surface methodology. Subsequently, the two approaches were analyzed: separated hydrolysis and fermentation (SHF) and a simultaneous saccharification and fermentation (SSF) process. For Tygra biomass in the SHF process, the ethanol concentration was 10.5 g∙L−1 (3.04 m3·ha−1), and for Rajan biomass at the SSF process, the ethanol concentration was 7.5 g∙L−1 (2.23 m3·ha−1). In conclusion, the biomass of Polish varieties of hemp, i.e., Tygra and Rajan, was found to be an interesting and promising raw material for bioethanol production.

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“…For example, polymer reagents have been used in industry, especially in the pharmaceutical industry, as catalytic and stoichiometric reagents in the synthesis of nucleotides and peptides. − In these cases, the polymers were directly involved in the reaction. Other class of polymer reagents are for the scavenging of substances in solutions, in which it is used after the reaction occurred for the removal of impurities and byproducts. − Over the past years, polymer-supported reagents containing hydrazine or semicarbazide groups have been extensively studied and used in various applications to scavenge carbonyl compounds from solutions. − To investigate the possibility of a novel and low-cost resin for the scavenging of aldehyde and ketones, we previously investigated the synthesis of a resin, named Amb15-Iso, which was obtained from the reaction between a commercial acid resin (Amberlyst-15) and isoniazid (isonicotinic acid hydrazide, CAS: 54-85-3), a drug for tuberculosis treatment . Amb15-Iso is a low-cost resin and has the ability to remove aldehydes and ketones from solutions in a single-step reaction.…”

Section: Introductionmentioning

confidence: 99%

Effects of Solvent Polarity on the Reaction of Aldehydes and Ketones with a Hydrazide-Bound Scavenger Resin

et al. 2019

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Polymer-supported reagents have been extensively studied and used in various applications, such as condensation reactions and multiple component reactions. This paper examines the reactions between a solid-functionalized resin, named Amb15-Iso, and aldehydes and ketones that have been solubilized in different solvents. The reactions between these molecules and a hydrazide (isoniazid) in both neutral and acidic media were also studied. The results showed that the solvent polarity influenced the kinetics of the reaction and the yields of carbonyl compounds that were captured by the resin, particularly, for less-reactive molecules. The reactions using the resin were faster than those using free isoniazid in solution, likely because the acidic sites remaining in the resin can catalyze the reaction, increasing the rate of capture. A high dependence on the presence of acidic compounds and the rate of the reaction was observed, in which trifluoroacetic acid was used to catalyze the reaction between the tested molecules and isoniazid in solution. The differential reactivities of the examined ketones and aldehydes in these condensation reactions demonstrate that the resin can provide selective criteria, preferentially scavenging aldehydes from solution. While benzaldehyde reacted quite quickly with the resin, acetophenone barely had any reaction and remained in solution.

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Understanding physicochemical changes in pretreated and enzyme hydrolysed hemp (Cannabis sativa) biomass for biorefinery development

Cited by 9 publications

References 47 publications

Enrichment of Cellulosic Waste Hemp (Cannabis sativa) Hurd into Non-Toxic Microfibres

Enrichment of Cellulosic Waste Hemp (Cannabis sativa) Hurd into Non-Toxic Microfibres

Polish Varieties of Industrial Hemp and Their Utilisation in the Efficient Production of Lignocellulosic Ethanol

Effects of Solvent Polarity on the Reaction of Aldehydes and Ketones with a Hydrazide-Bound Scavenger Resin

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