Utilization of sorghum bagasse hydrolysates for producing microbial lipids

Liang, Yanna; Tang, Tianyu; Umagiliyage, Arosha Loku; Siddaramu, Thara; McCarroll, Matt; Choudhary, Ruplal

doi:10.1016/j.apenergy.2011.10.013

Cited by 62 publications

(34 citation statements)

References 55 publications

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“…The same sorghum bagasse and corn fiber that were studied in our previous works [4,[22][23][24]35] were used in this research. Based on National Renewable Energy Laboratory (NREL)'s protocol [33], the sorghum bagasse contained approximately 36.9±1.6 % cellulose, 17.8± 0.6 % hemicellulose, and 19.5±1.1 % lignin [4].…”

Section: Pretreatment Of Sorghum Bagasse and Corn Fibermentioning

confidence: 99%

Sophorolipid Production from Biomass Hydrolysates

Samad

Zhang

Chen

et al. 2014

Appl Biochem Biotechnol

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Although extensive research has been conducted on producing sophorolipids using Candida (Starmerella) bombicola from pure sugars and various oil sources, production of this biosurfactant has not been evaluated when cells are cultivated in lignocellulosic hydrolysates. Here, we report for the first time that C. bombicola is capable of producing sophorolipids on hydrolysates derived from sweet sorghum bagasse and corn fiber. Without oil supplementation, a sophorolipid concentration of 3.6 and 1.0 g/L was detected from cultures with bagasse and corn fiber hydrolysates, respectively. With the addition of soybean oil at 100 g/L, the yield of sophorolipids from these two hydrolysates in the same order was 84.6 and 15.6 g/L. Surprisingly, C. bombicola consumed all monomeric sugars and nonsugar compounds in the hydrolysates, and cultures with bagasse hydrolysates had higher yield of sophorolipids than those from a standard medium which contained pure glucose at the same concentration.

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Section: Pretreatment Of Sorghum Bagasse and Corn Fibermentioning

confidence: 99%

Sophorolipid Production from Biomass Hydrolysates

Samad

Zhang

Chen

et al. 2014

Appl Biochem Biotechnol

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“…Oleaginous yeast have potential as a viable alternative oil-source but manufacturing for commoditybased products is cost-prohibitive mainly due to the high costs of feedstocks. Oleaginous yeast are capable of generating SCO from a variety of low-valued inedible plant-based feedstocks including corn cobs (Huang et al, 2012;Gao et al, 2014), corn residue Galafassi et al, 2012;Sitepu et al, 2014), corn fiber (Liang et al, 2014), rice straw (Huang et al, 2009), sorghum bagasse (Liang et al, 2012), sugarcane bagasse (Tsigie, 2011), and wheat straw (Yu et al, 2011). The oleaginous yeast Lipomyces starkeyi has considerable potential as a viable SCO producer due to its ability to produce high amounts of oil from hemicellulose-derived sugars including xylose (Anschau et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Production of single cell oil from Lipomyces starkeyi ATCC 56304 using biorefinery by-products

Probst

Vadlani

2015

Bioresource Technology

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Single cell oil (SCO) is a valuable noncrop-based renewable oil source. Hemicellulose derived sugars can be utilized to produce SCO using the oleaginous yeast Lipomyces starkeyi ATCC 56304. Bran by-products were tested as hemicellulose-rich feedstocks for the production of SCO. Whole and destarched corn and wheat bran hydrolysates were produced using hydrothermal and dilute sulfuric acid (0%, 0.5%, 1.0%, v/v) pretreatment along with enzymatic hydrolysis. Whole bran hydrolysates produced from hydrothermal pretreatment generated the highest average oil yields of 126.7 and 124.3 mg oil/g sugar for both wheat and corn bran, respectively. 1.0% acid pretreatment was effective for the destarched bran generating a hemicellulose hydrolysis efficiency of 94% and 84% for wheat and corn bran, respectively, resulting in the highest oil yield of 70.7 mg oil/g sugar. The results indicate pretreated corn and wheat bran hydrolysates can serve as viable feedstocks for oleaginous yeast SCO bioconversion.

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“…Yeasts and fungi are also favorable oleaginous microorganisms, showing rapid growth rates on simple carbon sources such as glucose derived from corn, sugar cane, or cellulosic biomass [2,35,36]. Yeast strains, such as species of Rhodosporidium, Rhodotorula, Lipomyces, and Cryptococcus accumulate intracellular lipids (mostly TAGs) up to 70% of their dry biomass comparable in yields to oil-bearing seeds [37,38].…”

Section: Lipid Productionmentioning

confidence: 99%

Lipid recovery from wet oleaginous microbial biomass for biofuel production: A critical review

et al. 2016

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h i g h l i g h t sChallenges in industrial lipid extraction processes were illustrated. Lipid recovery from wet biomass was critically reviewed in the context of biofuel productions. Cell wall disruption technologies were critically reviewed and compared. a b s t r a c tBiological lipids derived from oleaginous microorganisms are promising precursors for renewable biofuel productions. Direct lipid extraction from wet cell-biomass is favored because it eliminates the need for costly dehydration. However, the development of a practical and scalable process for extracting lipids from wet cell-biomass is far from ready to be commercialized, instead, requiring intensive research and development to understand the lipid accessibility, mechanisms in mass transfer and establish robust lipid extraction approaches that are practical for industrial applications. This paper aims to present a critical review on lipid recovery in the context of biofuel productions with special attention to cell disruption and lipid mass transfer to support extraction from wet biomass.

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Utilization of sorghum bagasse hydrolysates for producing microbial lipids

Cited by 62 publications

References 55 publications

Sophorolipid Production from Biomass Hydrolysates

Sophorolipid Production from Biomass Hydrolysates

Production of single cell oil from Lipomyces starkeyi ATCC 56304 using biorefinery by-products

Lipid recovery from wet oleaginous microbial biomass for biofuel production: A critical review

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