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Park MR, Jeong GT. Production of reducing sugar in Gracilaria verrucosa using physio-chemical pretreatment and subsequent enzymatic hydrolysis. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chupaza MH, Park YR, Kim SH, Yang JW, Jeong GT, Kim SK. Bioethanol Production from Azolla filiculoides by Saccharomyces cerevisiae, Pichia stipitis, Candida lusitaniae, and Kluyveromyces marxianus. Appl Biochem Biotechnol 2020; 193:502-514. [PMID: 33026615 DOI: 10.1007/s12010-020-03437-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/29/2020] [Indexed: 10/23/2022]
Abstract
Ethanol was produced by separate hydrolysis and fermentation using Azolla filiculoides as a biomass. Thermal acid hydrolysis and enzymatic saccharification were used as pretreatment methods to produce monosaccharides from Azolla. The optimal content for thermal acid hydrolysis of 14% (w/v) Azolla weed slurry produced 16.7-g/L monosaccharides by using 200 mM H2SO4 at 121 °C for 60 min. Enzymatic saccharification using 16 U/mL Viscozyme produced 61.6 g/L monosaccharide at 48 h. Ethanol productions with ethanol yield coefficients from Azolla weed hydrolysate using Kluyveromyces marxianus, Candida lusitaniae Saccharomyces cerevisiae, and Pichia stipitis were 26.8 g/L (YEtOH = 0.43), 23.2 g/L (YEtOH = 0.37), 18.2 g/L (YEtOH = 0.29), and 13.7 g/L (YEtOH = 0.22), respectively. Saccharomyces cerevisiae produces the lowest yield as it utilized only glucose. Bioethanol from Azolla weed hydrolysate can be successfully produced by using Kluyveromyces marxianus because it consumed the mixture of glucose and xylose completely within 60 h.
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Affiliation(s)
- Mariam H Chupaza
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea.,KOICA-PKNU International Graduate Program of Fisheries Science, Pukyong National University, Busan, 48513, Republic of Korea.,Department of Fishing and Fish Processing, Fisheries Education and Training Agency, P.O. Box 83, Bagamoyo, Costal Region, Tanzania
| | - Yu-Rim Park
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea
| | - So Hee Kim
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea
| | - Ji Won Yang
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea
| | - Gwi-Teak Jeong
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea
| | - Sung-Koo Kim
- School of Marine Fisheries, and Life Science (Major in Biotechnology), Pukyong National University, 48513, Busan, Republic of Korea.
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