Oligosaccharides Production by Leuconostoc holzaapfelii Strain S7 Using Sugar Cane Molasses as Fermentation Medium

Zohri, Abd El-Naser; El-Dean, Adel Kamal; Elbanna, Кhaled; Abdalrahim, Salah

doi:10.21608/esugj.2019.219364

Cited by 2 publications

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“…High sugar concentration also affects the fermentation process and microbial activity. Many studies have observed that the high sugar concentration induces osmotic pressure in the microbial cells, reducing the efficiency of ethanol fermentation [ 141 , 145 ]. Increased sugar concentration and low water activity affect the growth and viability of the cells, which leads to reduced ethanol fermentation rates.…”

Section: Factors Affecting Ethanol Productionmentioning

confidence: 99%

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

et al. 2023

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Bioethanol is an appropriate alternate energy option due to its renewable, nontoxic, environmentally friendly, and carbon-neutral nature. Depending upon various feedstocks, bioethanol is classified in different various generations. First-generation ethanol created a food vs fuel problem, which was overcome by second-generation, third-generation and fourth-generation ethanol. The considerable availability of lignocellulosic biomass makes it a suitable feedstock, however, its recalcitrant nature is the main hurdle in converting it to bioethanol. The present study gives a comprehensive assessment of global biofuel policies and the current status of ethanol production. Feedstocks for first-generation (sugar and starch-based), second-generation (lignocellulosic biomass and energy crops), third-generation (algal-based) and fourth-generation (genetically modified algal biomass or crops) are discussed in detail. The study also assessed the process for ethanol production from various feedstocks, besides giving a holestic background knowledge on the bioconversion process, factors affecting bioethanol production, and various microorganisms involved in the fermentation process. Biotechnological tools also play a pivotal role in enhancing process efficiency and product yield. In adddition, most significant development in the field of genetic engineering and adaptive evolution are also highlighted.

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Section: Factors Affecting Ethanol Productionmentioning

confidence: 99%

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

et al. 2023

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“…Moreover, the sugar manufacturing process of cane molasses will generate some hazardous substances such as excessive metallic ions, which are toxic to microbial cells (Zohri et al 2019;Xu and Xu 2014). The commonly used in ethanol production in the industry is Sacharomyces cervisiae (zaldovar et al2001).…”

Section: Ekbmentioning

confidence: 99%

Reducing heavy metals content in sugarcane molasses and its effect on ethanol fermentation efficiency

Zohri

Soliman²,

Ibrahim³

et al. 2022

Egyptian Sugar Journal

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The world energy scene is undergoing a period of transition. As the inevitability of exhaustion of fossil fuels is becoming increasingly intensive, efforts are exerted to find and use substitutes for energy. Bioethanol is one of the most substitute renewable fuels contributing to the reduction of the global warming effect and negative environmental impact. Bioethanol production generally utilizes derivatives from food crops such as corn grain and sugarcane. In Egypt, sugarcane molasses is mainly used as feedstock for bioethanol production. However, molasses contains a concentration of heavy metals. Heavy metals are presented in high concentrations in the fermentation medium causing a critical problem during fermentation. This study focuses on reducing heavy metals content in molasses to improve bioethanol fermentation using heating, centrifugation, sulfuric acid, and phosphoric acid. Heating and centrifugation were sufficient to decrease Ca with less effect on other metals. Sulfuric acid reduced heavy metals content and the reduction addition of phosphoric acid had less effect on lowering the levels of heavy metals in molasses. Pretreatment of molasses with 0.3% H2SO4 decreased the contents of various inhibitory metals: Ca, Cd, Cu, Fe, Ni, Pb, and Zn making molasses healthier for fermentation by yeast strains and increasing subsequent ethanol yield as well as high fermentation efficiency.

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Oligosaccharides Production by Leuconostoc holzaapfelii Strain S7 Using Sugar Cane Molasses as Fermentation Medium

Cited by 2 publications

References 0 publications

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

A panoramic view of technological landscape for bioethanol production from various generations of feedstocks

Reducing heavy metals content in sugarcane molasses and its effect on ethanol fermentation efficiency

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