Recent developments in microbial oils production: a possible alternative to vegetable oils for biodiesel without competition with human food?

Christophe, Gwendoline; Kumar, Vinod; Nouaille, Régis; Gaudet, Geneviève; Fontanille, Pierre; Pandey, Ashok; Soccol, Carlos Ricardo; Larroche, Christian

doi:10.1590/s1516-89132012000100004

Cited by 93 publications

(51 citation statements)

References 86 publications

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“…Even though extensive research has been conducted to find a better raw material for microbial lipid (or oil) production; crude glycerol gained special importance among the researchers because it is available as a by-product at the biodiesel production site at low cost (Yazdani & Gonzalez, 2007). The other principle industries that produce glycerol as a byproduct are petrochemical industry and soap and saponification industry (Christophe et al, 2012). However, the microbial conversion of crude glycerol into lipids are not economical due to the following reasons.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of lipid production at lab scale fermenters by a new isolate of Yarrowia lipolytica SKY7

Kuttiraja

Dhouha

Tyagi

2016

Bioresource Technology

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The objective of this work was to study the kinetics of lipid production at lab scale fermenters by a new isolate of Yarrowia lipolytica SKY7. The model terms glycerol concentration inoculum and C/N ratio with inoculum were found to be significant for lipid production. Lipid production was found to be higher in glycerol 82.5g/L, C/N ratio 75 and inoculum volume 6.25%. Optimized culture conditions were tested at 15L bench scale reactor. The biomass concentration and lipid content obtained was 29.5g/L and 50% (w/w), respectively. The yield coefficients were calculated and found to be 0.332g/g (g biomass/g of glycerol) of biomass and 0.179g/g (g lipid/g glycerol consumed) for lipid. Observed rates of lipid production show lipid production from 30h of fermentation. Out of the total glycerol consumed, 41.1% glycerol was converted into biomass, lipid, and citric acid.

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Section: Introductionmentioning

confidence: 99%

Kinetics of lipid production at lab scale fermenters by a new isolate of Yarrowia lipolytica SKY7

Kuttiraja

Dhouha

Tyagi

2016

Bioresource Technology

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“…5) via the ATP:citrate lyase (ACL) pathway. 3,4,[8][9][10]23 As abovementioned, with genetic modication, lipid accumulation can increase by as much as 90% of oleaginous yeast biomass . 10 Our ndings of over 70% lipid accumulation without genetic modication are really interesting in this context.…”

Section: View Article Onlinementioning

confidence: 97%

Development of nutrient media to increase the accumulation of lipids without genetic modification of a lipogenic microorganism

et al. 2017

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a Yarrowia lipolytica has drawn attention from the scientists over the last few decades because of its potential to accumulate intracellular lipid that can be transesterified to methyl esters with properties resembling those of diesel. A kinetics study of intracellular lipid production in Y. lipolytica is very important because it would help process modeling and cost minimization for increasing the lipid production. A set of defined media with varying amounts of pure glycerol as the carbon source and a fixed amount of ammonium sulfate as the nitrogen source and other media components, including thiamine and uracil supplements, was used to study the kinetics of lipid production. With an increase in the carbon to nitrogen (C/N) ratio, lipid accumulation increased to a certain limit up to 4 g L À1, followed by substrate inhibition. The best rate and amount of lipid accumulation was predicted to be obtained in a cultivation medium with an initial glycerol concentration of 93 g L À1. While lipid production was high, citric acid production in the media was negligible. Minimization of citric acid synthesis via proper media development with nitrogen starvation and unique supplement utilization can increase lipid accumulation in Y. lipolytica IMUFRJ 50682 up to a great extent in mere batch cultivation without any genetic modification.

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“…14 cell metabolism will direct the excess carbon towards lipid biosynthesis and deposition of lipids in discrete lipid bodies within a cell as a storage material of carbon and energy (81,82).…”

Section: Microorganisms and Feedstocks For Lipid Productionmentioning

confidence: 99%

“…The mode of production is an important parameter for optimizing the lipid production process both technically and economically (82). Most studies have been carried on by batch cultivation (79,81,82,(103)(104)(105).…”

Section: Bioprocess Modes For Microbial Lipids Productionmentioning

confidence: 99%

Recent Trends in Biodiesel and Biogas Production

Bušić

Kundas

Morzak

et al. 2018

Food Technol. Biotechnol.

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SummaryBiodiesel and biogas are two very important sources of renewable energy worldwide, and particularly in EU countries. While biodiesel is almost exclusively used as transportation fuel, biogas is mostly used for production of electricity and heat. The application of more sophisticated purification techniques in production of pure biomethane from biogas allows its delivery to natural gas grid and its subsequent use as transportation fuel. While biogas is produced mostly from waste materials (landfills, manure, sludge from wastewater treatment, agricultural waste), biodiesel in EU is mostly produced from rapeseed or other oil crops that are used as food. This raises the 'food or fuel' concerns. To mitigate this problem considerable efforts have been done to use non-food feedstock for biodiesel production. These include all kinds of waste oils and fats, but recently more attention has been devoted to production of microbial oils by cultivation of microorganisms that are able to accumulate high amounts of lipids in their biomass. Promising candidates for microbial lipids production can be found www.ftb.com.hrPlease note that this is an unedited version of the manuscript that has been accepted for publication. This version will undergo copyediting and typesetting before its final form for publication. We are providing this version as a service to our readers. The published version will differ from this one as a result of linguistic and technical corrections and layout editing.2 among different strains of filamentous fungi, yeast, bacteria and microalgae. Feedstocks of interest are agricultural waste rich in carbohydrates as well as different lignocellulosic raw materials where some technical issues have to be resolved. In this work, recovery and purification of biodiesel and biogas were also considered.

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Recent developments in microbial oils production: a possible alternative to vegetable oils for biodiesel without competition with human food?

Cited by 93 publications

References 86 publications

Kinetics of lipid production at lab scale fermenters by a new isolate of Yarrowia lipolytica SKY7

Kinetics of lipid production at lab scale fermenters by a new isolate of Yarrowia lipolytica SKY7

Development of nutrient media to increase the accumulation of lipids without genetic modification of a lipogenic microorganism

Recent Trends in Biodiesel and Biogas Production

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