Biomass Fatty Acid Profile and Fuel Property Prediction of Bagasse Waste Grown Nannochloropsis oculata

Abo El-Khair B. El-Sayed, Nashwa A. Fetyan, Farahat S. Moghanm, Mohssen Elbagory, Fatma M. Ibrahim, Mahmoud W. Sadik and Mohamed S. Shokr ()
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Abo El-Khair B. El-Sayed: Algal Biotechnology Unit, National Research Centre, Cairo 12622, Egypt
Nashwa A. Fetyan: Soils, Water and Environment Research Institute, Agricultural Research Center, Giza 12619, Egypt
Farahat S. Moghanm: Soil and Water Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
Mohssen Elbagory: Department of Biology, Faculty of Science and Arts, King Khalid University, Abha 61321, Saudi Arabia
Fatma M. Ibrahim: Student Academy of Scientific Research & Technology, Cairo 4262104, Egypt
Mahmoud W. Sadik: Department of Microbiology, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
Mohamed S. Shokr: Soil and Water Department, Faculty of Agriculture, Tanta University, Tanta 31527, Egypt

Agriculture, 2022, vol. 12, issue 8, 1-11

Abstract: The Chrythophyta alga Nannochloropsis oculata was mixotrophically grown in artificial media enriched with acid-prehydrolyzed bagasse waste as a source of organic carbon. The used growth medium was composed of F2 nutrients, sea salt (22.0 g L −1 ), and bagasse extract dissolved in sterile tap water. All of the determined growth parameters resulted in their maximums, as the alga was fed with 25% F2 growth medium enriched with 10% bagasse extract, while bagasse-extract-free medium engaged the total chlorophyll and carotenes at the expense of dry weight accumulation during the vegetative growth period. On the contrary, the dry weight under induction growth slightly differed among the different employed treatments; however, all the treatments surpassed the control one, and variation was obviously found in the cases of chlorophyll and carotene. A slight increase in oil content (6.19–11.89%) was observed, as the vegetative cells were grown under induction conditions. The fatty acids ranged between C16 and C20, and the proportions of SFA and MUFA increased from a sum of 63.57% to 88.31%, while the PUFA, including linoleic acid, α-linolenic acid, and arachidonic acid, declined from 36.3 to 11.69%. Concerning the fuel properties, the induction-produced oil surpassed the vegetative one.

Keywords: Nannochloropsis oculata; fatty acid profile; biodiesel properties (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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