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Utilization of Noxious Weed Water Hyacinth Biomass as a Potential Feedstock for Biopolymers Production: A Novel Approach

Title
Utilization of Noxious Weed Water Hyacinth Biomass as a Potential Feedstock for Biopolymers Production: A Novel Approach
Authors
Saratale, Rijuta GaneshCho, Si-KyungGhodake, Gajanan S.Shin, Han-SeungSaratale, Ganesh DattatrayaPark, YooheonLee, Hee-SeokBharagava, Ram NareshKim, Dong-Su
Ewha Authors
김동수
SCOPUS Author ID
김동수scopus
Issue Date
2020
Journal Title
POLYMERS
ISSN
2073-4360JCR Link
Citation
POLYMERS vol. 12, no. 8
Keywords
water hyacinth biomassperacetic acid pretreatmentalkaline pretreatmentpoly(3-hydroxybutyrate)Ralstonia eutrophaenzymatic hydrolysis
Publisher
MDPI
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
This study aims to utilize a noxious weed water hyacinth biomass (WH) for polyhydroxybutyrate (PHB) production. Alkaline and peracetic acid pretreatment was employed for the hydrolysis of WH and consequently enzymatic saccharification to produce fermentable sugars for PHB production. The pretreatment competence was determined using various operational parameters. By applying ambient conditions, alkaline pretreatment gave higher lignin removal of 65.0%, with 80.8% hydrolysis yield, and on enzyme hydrolysis (40 FPU/g of dry WH), produced total reducing sugar of about 523 mg/g of WH. The resulted WH enzymatic hydolysates were evaluated for the production of PHB byRalstonia eutropha(ATCC 17699). The WH hydrolysates cultivation was compared to synthetic hydrolysates that contain a similar carbon composition in terms of bacterial growth and PHB synthesis. The effects of various supplements to enhance PHB production were estimated. Supplementation of corn steep liquor (CSL) as a cheap nitrogen source with WH hydrolysates favored a higher amount of PHB synthesis (73%), PHB titer of 7.30 g/L and PHB yield of 0.429 g/g of reducing sugar. Finally, using standard analytical tools, the physical and thermal characteristics of the extracted PHB were evaluated. The findings revealed WH was a promising and technically feasible option for transforming biomass into sustainable biopolymer conversion on a large scale.
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DOI
10.3390/polym12081704
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엘텍공과대학 > 환경공학전공 > Journal papers
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