Analysis of mono-sugars obtained by acid hydrolysis of algae-based polysaccharides

Kang, Eun-kyung; Lee, Byung Min; Hwang, Hyun-Ah; Kim, Jihyun

doi:10.1016/j.jiec.2012.01.037

Cited by 10 publications

(7 citation statements)

References 21 publications

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“…Similarly, because C. saccharoperbutylacetonicum is an amylolytic microorganism, the enzymatic hydrolysis step for the conversion of starch into fermentable sugars is not required (Thang et al, 2010). Studies focused on acid hydrolysis as pretreatment process to digest cellulose and hemicellulose in algae have been already conducted (Kang et al, 2012;Khambhaty, 2012;Setyaningsih et al, 2012;Wang et al, 2011;Yazdani et al, 2011). However, there are no studies to date regarding the optimization of wastewater microalgae for ABE fermentation using acid hydrolysis as a saccharification method.…”

Section: Acid Hydrolysis Of Wastewater Algae As Pretreatment For Abe mentioning

confidence: 99%

“…Glucose, maltose, and xylose have been reported to be fermentable sugars by using various strain of C. saccharoperbutylacetonicum (Al-Shorgani et al, 2011;Ferchichi et al, 2005;Jones and Woods, 1986;Kumar and Gayen, 2011;Yoshida, 2012). Methods used to achieve saccharification of recalcitrant feedstocks are enzyme digestion, thermolysis, dilute acid hydrolysis, and concentrated acid hydrolysis (Harrison et al, 2004;Kang et al, 2012). Ellis et al (2012), conducted experiments to compare different pretreatment conditions used to produce ABE from wastewater algae.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of wastewater microalgae saccharification using dilute acid hydrolysis for acetone, butanol, and ethanol fermentation

et al. 2015

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Exploring and developing sustainable and efficient technologies for biofuel production are crucial for averting global consequences associated with fuel shortages and climate change. Optimization of sugar liberation from wastewater algae through acid hydrolysis was determined for subsequent fermentation to acetone, butanol, and ethanol (ABE) by Clostridium saccharoperbutylacetonicum N1-4. Acid concentration, retention time, and temperature were evaluated to determine optimal hydrolysis conditions by assessing the sugar and ABE yield as well as the associated costs. Sulfuric acid concentrations ranging from 0-1.5 M, retention times of 40-120 min, and temperatures from 23°C-90°C were combined to form a full factorial experiment. Acid hydrolysis pretreatment of 10% dried wastewater microalgae using 1.0 M sulfuric acid for 120 min at 80-90°C was found to be the optimal parameters, with a sugar yield of 166.1 g for kg of dry algae, concentrations of 5.

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Section: Acid Hydrolysis Of Wastewater Algae As Pretreatment For Abe mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of wastewater microalgae saccharification using dilute acid hydrolysis for acetone, butanol, and ethanol fermentation

et al. 2015

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“…However, owing to their hydrophilic nature, the films demonstrated a high wettability and adsorbed significant amounts of the medium. Furthermore, polysaccharides are prone to significant acidic hydrolysis (Kang et al, 2012), which is considered as a first-step toward the film erosion and disintegration. This might contribute to the significant weight loss of the films in the gastric medium.…”

Section: Water Uptake and Weight Loss Studies Of Casted Filmsmentioning

confidence: 99%

A novel natural GRAS-grade enteric coating for pharmaceutical and nutraceutical products

Khoder

Schropp

Zeitler

et al. 2020

International Journal of Pharmaceutics

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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.

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“…This functional group is not present in ABTS but the wavenumber may overlap with the conjugated C=C stretch (Liu et al 2015;Silverstein et al 2015), which may indicate that the ABTS concentration of 10 mM had been enough to leave residual ABTS (an aromatic molecule) on the sample after washing. Alternatively, ABTS is a slightly acidic molecule and therefore could have degraded some polysaccharides (Kang et al 2012), leaving more lignin in the residual solid. Fig.…”

Section: Enzyme Treatmentsmentioning

confidence: 99%

Comparison of Three Fourier Transform Infrared Spectroscopy Sampling Techniques for Distinction between Lignocellulose Samples

Gogna¹,

Goacher²

2017

BioResources

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Lignocellulosic biomass is one of the most abundant raw materials available on earth, and the study of lignocellulose components is required for the production of second-generation biofuels. Fourier transform infrared spectroscopy (FTIR) has a demonstrated potential as a costeffective and efficient method to distinguish between lignocellulose specimens. This study compared three FTIR modes-attenuated total reflectance (ATR), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and Transmission-FTIR-in their ability to distinguish samples of different lignocellulose species at varying grain sizes, as well as before and after enzyme treatment. The reproducibility among replicates and the separation between different sample groups was assessed using an adjusted "separation/scatter" metric calculated from the scores of principal component analysis (PCA). Attenuated total reflectance was most frequently the best method due to its least amount of variance among sample replicates. However, Transmission-FTIR was better than ATR for certain particle sizes or enzyme treatments. Diffuse reflectance infrared Fourier transform spectroscopy was repeatedly inferior to ATR and Transmission-FTIR, especially in terms of variability. This work provided insight into the best mode of FTIR for characterizing lignocellulose powders. Future work should test the robustness of these results with a wider range of wood species, particle sizes, enzymes concentrations, and reaction conditions.

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Analysis of mono-sugars obtained by acid hydrolysis of algae-based polysaccharides

Cited by 10 publications

References 21 publications

Optimization of wastewater microalgae saccharification using dilute acid hydrolysis for acetone, butanol, and ethanol fermentation

Optimization of wastewater microalgae saccharification using dilute acid hydrolysis for acetone, butanol, and ethanol fermentation

A novel natural GRAS-grade enteric coating for pharmaceutical and nutraceutical products

Comparison of Three Fourier Transform Infrared Spectroscopy Sampling Techniques for Distinction between Lignocellulose Samples

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