Concomitant hydrolysis of sucrose by the long half-life time yeast invertase and hydrogen production by the hydrogen over-producing Escherichia coli HD701

Morsy, Fatthy Mohamed; Ibrahim, Samir Hag

doi:10.1016/j.energy.2016.05.006

Cited by 13 publications

(3 citation statements)

References 35 publications

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“…As shown in Fig. 3b, invertase is quite stable at 35 , pH 6.5 and 180 rpm agitation, which is consistent with results reported in the scientific literature [11],…”

Section: Sucrose Conversion By Invertase and Its Stabilitysupporting

confidence: 92%

“…Production of HFS using invertase hydrolyzed sucrose is highly efficient thanks to such a simplified reaction process, and its downstream separation is also simplified because of enzyme specificity and no chemical addition [10]. Because invertase has a high operating stability at 35 [11], it can be reused to reduce the enzyme cost in industry. Invertase reuse has been realized by immobilizing it on various carriers.…”

Section: Introductionmentioning

confidence: 99%

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From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

Wang

Luo

Ren

et al. 2020

Journal of Membrane Science

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“…As shown in Fig. 3b, invertase is quite stable at 35 , pH 6.5 and 180 rpm agitation, which is consistent with results reported in the scientific literature [11],…”

Section: Sucrose Conversion By Invertase and Its Stabilitysupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

Wang

Luo

Ren

et al. 2020

Journal of Membrane Science

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“…In addition, many countries in developing world spend more than 20% of its national income for importing fossil fuel which is economically hindering their development. As a consequence, there is an international trend towards alternative renewable energy sources allocation [1,2]. Biodiesel is one of the renewable energy alternatives that attracted an increased attention globally has been used as fuel in diesel engines and heating systems for over 25 years [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Statistical Optimization of Lipid Extraction from Wastewater Scum Sludge and Saponifiable Lipids Composition Analysis

Ibrahim¹

2017

SJEE

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Abstract:In the present study, Design of Experiment (DoE) as a statistical method was adopted for optimizing conditions for lipid extraction from scum sludge. Four different extraction variables were investigated: methanol to hexane ratio (%), solvent to sludge ratio (ml/g), temperature (°C), and extraction time (h). During the optimization process, saponifiable lipids (SLs) content of the extracted lipid was analyzed. Screening experiments revealed that methanol to hexane ratio (X1), solvents to sludge ratio (X2) and temperature (X3) showed a significant effect on Y lipid (p < 0.05). Lower methanol to hexane ratio and higher solvent to sludge ratio showed the highest positive effect on lipid yield (Y lipid ). No significant effect on extraction time on Y lipid was observed. The positive relationship between lower methanol to hexane ratio and the amount of lipid extracted can be attributed to the presence of higher amounts of neutral lipids in scum sludge. According to Box-Behnken design and Response surface method (RSM), the maximum lipid extraction yield (Y lipid ) predicted through numerical optimized conditions by the model for highest desirability (0.995) was 29.614% at methanol to hexane ratio (%) of 42%, solvent to sludge ratio (v/wt) of 51 ml/g, temperature at 87°C for extraction time of 6 hours. The FAMEs yield produced from ex-situ acid-catalyzed esterification/transesterification of the methanol-hexane co-solvent extracted lipid ranged between 7.9-9.3% (wt/wt) based on sludge weight. Fatty acid profile of FAMEs was found to be was found to be dominated by Oleic acid methyl ester (C18: 1) followed by methyl Palmitate (C16: 1) representing 39.4% and 24.3% of FAMEs composition respectively. The correlation analysis of extraction variables and FEMAs yield revealed that solvent to sludge ratio (ml/g) has the highest positive significant correlation with FAMEs yield (p-value < 0.05). However, methanol to hexane ratio (X1) and temperature (X3) were inversely correlated with FAMEs yield.

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Interaction between Saccharomyces cerevisiae and Lactobacillus fermentum during co-culture fermentation

Carvalho

Cruz

Américo-Pinheiro

et al. 2020

Biocatalysis and Agricultural Biotechnology

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Concomitant hydrolysis of sucrose by the long half-life time yeast invertase and hydrogen production by the hydrogen over-producing Escherichia coli HD701

Cited by 13 publications

References 35 publications

From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

From molasses to syrup: Engineering ultrafiltration membrane surface to improve invertase reusability

Statistical Optimization of Lipid Extraction from Wastewater Scum Sludge and Saponifiable Lipids Composition Analysis

Interaction between Saccharomyces cerevisiae and Lactobacillus fermentum during co-culture fermentation

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