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Stress-induced lipids are unsuitable as a direct biodiesel feedstock: a case study with Chlorella pyrenoidosa.
Bioresour Technol. 2013 Jun; 138:382-6.BT

Abstract

The effects of various stresses on the suitability of lipid synthesized by Chlorella pyrenoidosa for biodiesel production were investigated. Lipids were characterized for detailed fatty acid methyl ester profiling and biodiesel properties like cetane number (CN), iodine value, cold filter plugging point (CFPP). Maximum biomass productivity (106.63 mgL(-1)d(-1)) and lipid content (29.68%) were obtained at indoor cultivation (nitrate sufficient, pH 8-10, 24h illumination). However, compared to this condition, other nitrate sufficient cultures [pH 6-8 and 10-12 (24h illumination), and at ambient CO2 and 16:8h light:dark photoperiod (pH unadjusted)] showed ∼12-14% lower lipid productivity. Upon 50% nitrate depletion (at indoor and outdoor; pH unadjusted) lipid content has increased by 7.62% and 17%, respectively. Though stress conditions helped enhancing lipid accumulation, there was two-fold increase in PUFA content compared to that observed at pH 8-10. This resulted in fuel properties which did not comply with the biodiesel standards.

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Authors+Show Affiliations

Shekh AY
Environmental Health Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nagpur, India.
Shrivastava P
No affiliation info available
Krishnamurthi K
No affiliation info available
Mudliar SN
No affiliation info available
Devi SS
No affiliation info available
Kanade GS
No affiliation info available
Lokhande SK
No affiliation info available
Chakrabarti T
No affiliation info available

MeSH

BiofuelsBiomassCarbon DioxideChlorellaEstersFatty AcidsLipidsStress, Physiological

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23642439

Citation

Shekh, Ajam Yakub, et al. "Stress-induced Lipids Are Unsuitable as a Direct Biodiesel Feedstock: a Case Study With Chlorella Pyrenoidosa." Bioresource Technology, vol. 138, 2013, pp. 382-6.
Shekh AY, Shrivastava P, Krishnamurthi K, et al. Stress-induced lipids are unsuitable as a direct biodiesel feedstock: a case study with Chlorella pyrenoidosa. Bioresour Technol. 2013;138:382-6.
Shekh, A. Y., Shrivastava, P., Krishnamurthi, K., Mudliar, S. N., Devi, S. S., Kanade, G. S., Lokhande, S. K., & Chakrabarti, T. (2013). Stress-induced lipids are unsuitable as a direct biodiesel feedstock: a case study with Chlorella pyrenoidosa. Bioresource Technology, 138, 382-6. https://doi.org/10.1016/j.biortech.2013.04.010
Shekh AY, et al. Stress-induced Lipids Are Unsuitable as a Direct Biodiesel Feedstock: a Case Study With Chlorella Pyrenoidosa. Bioresour Technol. 2013;138:382-6. PubMed PMID: 23642439.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Stress-induced lipids are unsuitable as a direct biodiesel feedstock: a case study with Chlorella pyrenoidosa. AU - Shekh,Ajam Yakub, AU - Shrivastava,Preeti, AU - Krishnamurthi,Kannan, AU - Mudliar,Sandeep N, AU - Devi,Sivanesan Saravana, AU - Kanade,Gajanan S, AU - Lokhande,Satish K, AU - Chakrabarti,Tapan, Y1 - 2013/04/10/ PY - 2013/02/03/received PY - 2013/04/02/revised PY - 2013/04/03/accepted PY - 2013/5/7/entrez PY - 2013/5/7/pubmed PY - 2013/12/19/medline SP - 382 EP - 6 JF - Bioresource technology JO - Bioresour Technol VL - 138 N2 - The effects of various stresses on the suitability of lipid synthesized by Chlorella pyrenoidosa for biodiesel production were investigated. Lipids were characterized for detailed fatty acid methyl ester profiling and biodiesel properties like cetane number (CN), iodine value, cold filter plugging point (CFPP). Maximum biomass productivity (106.63 mgL(-1)d(-1)) and lipid content (29.68%) were obtained at indoor cultivation (nitrate sufficient, pH 8-10, 24h illumination). However, compared to this condition, other nitrate sufficient cultures [pH 6-8 and 10-12 (24h illumination), and at ambient CO2 and 16:8h light:dark photoperiod (pH unadjusted)] showed ∼12-14% lower lipid productivity. Upon 50% nitrate depletion (at indoor and outdoor; pH unadjusted) lipid content has increased by 7.62% and 17%, respectively. Though stress conditions helped enhancing lipid accumulation, there was two-fold increase in PUFA content compared to that observed at pH 8-10. This resulted in fuel properties which did not comply with the biodiesel standards. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/23642439/Stress_induced_lipids_are_unsuitable_as_a_direct_biodiesel_feedstock:_a_case_study_with_Chlorella_pyrenoidosa_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(13)00614-7 DB - PRIME DP - Unbound Medicine ER -