1
|
Li RH, Huang J, Liu CX, Yu K, Guo F, Li Y, Chen ZH, Wang X, Zhao RX, Zhang JY, Liang JJ, Li Y, Lin L, Sun L, Li XY, Li B. Genome-centric metagenomics provides new insights into metabolic pathways of polyhydroxyalkanoates biosynthesis and functional microorganisms subsisting on municipal organic wastes. WATER RESEARCH 2023; 244:120512. [PMID: 37633209 DOI: 10.1016/j.watres.2023.120512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/23/2023] [Accepted: 08/18/2023] [Indexed: 08/28/2023]
Abstract
The microbial community of a sequencing batch reactor operated under feast and famine conditions for production of polyhydroxyalkanoates (PHAs) was characterized through high-throughput sequencing and metagenomic analysis. The fermented food waste and chemically-enhanced primary sludge was fed in this bioreactor. After acclimation, the PHA yield achieved as high as 0.60-0.69 g CODPHA/g CODS. The complete changes of microbial community structure were found during shifts of feedstock. A synthesis of SCL/MCL-PHAs pathway was established for PHA-producing bioreactor in this mixed-culture system. The structure-performance relationship of PHA-producing microbial community and feedstock composition was investigated. The results showed that microbial community tends to be decentralized and prefer team work for PHA synthesis to consume the multiple substrates and digest inevitable non-VFA contents in fermented liquor. This study also discovered unreported potential PHA producers (e.g., genera Tabrizicola, Nannocystis, Ga0077539, Ga0077559, JOSHI-001, SNC69-320 and UBA2334) subsisting on municipal organic wastes and expands the current knowledge about mixed-culture system that the PHA synthesis pathway is widely existed in activated sludge.
Collapse
Affiliation(s)
- Ruo-Hong Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China; School of Environmental Science and Engineering, Sun Yat-sen University, China
| | - Jin Huang
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, China
| | - Cheng-Xi Liu
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Ke Yu
- School of Environment and Energy, Shenzhen Graduate School, Peking University, China
| | - Feng Guo
- School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Xiamen University, Xiamen, China
| | - You Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Zuo-Hong Chen
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, China
| | - Xuan Wang
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Ren-Xin Zhao
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Jia-Yu Zhang
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Jia-Jin Liang
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Yun Li
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Lin Lin
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China
| | - Lianpeng Sun
- School of Environmental Science and Engineering, Sun Yat-sen University, China
| | - Xiao-Yan Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, China; Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China.
| | - Bing Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, China.
| |
Collapse
|
3
|
de Jesus Assis D, Santos J, de Jesus CS, de Souza CO, Costa SS, Miranda AL, da Silva JR, Oliveira MBPP, Druzian JI. Valorization of crude glycerol based on biological processes for accumulation of lipophilic compounds. Int J Biol Macromol 2019; 129:728-736. [PMID: 30772411 DOI: 10.1016/j.ijbiomac.2019.02.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/31/2019] [Accepted: 02/13/2019] [Indexed: 11/17/2022]
Abstract
Bacteria that are capable of accumulating lipids in their cells as storage compounds can also produce polyhydroxyalkanoates of high technological value, depending on the specific culture conditions. The objective of this study was to utilize crude glycerol from biodiesel (CGB) as a substrate, which is a major byproduct from biodiesel production, to produce lipophilic compounds. Bacillus megaterium INCQS 425 was cultivated and evaluated for the production of lipophilic compounds and the properties of these compounds were investigated. Cultivation of the bacteria in a medium with a C:N ratio of 0.60:1 favored the accumulation of lipids by (17.5%) comprising mainly palmitic acid (13.08%), palmitoleic (39.48%), and especially oleic acid (37.02%), which imparts good characteristics to biodiesel. Meanwhile, cultivation of the bacteria in a medium with a C:N ratio of 4:1 favored the accumulation of polyhydroxyalkanoates (PHA) (3.31gL-1) mainly comprising medium and long chain PHA. Low crystallinity (<30%) and excellent thermal properties make them suitable for processes that demand high temperatures, such as extrusion. The lipids produced in the present study had satisfactory oxidative stability for the production of quality biodiesel. The polyhydroxyalkanoates produced in the study are of low cost and have promising thermal properties that justify its technological potential, thereby configuring highly competitive bioproducts.
Collapse
Affiliation(s)
- Denilson de Jesus Assis
- Department of Chemical Engineering, Polytechnic School, Federal University of Bahia, Salvador, BA, Brazil.
| | - Joana Santos
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Cristiane Santos de Jesus
- Department of Chemical Engineering, Polytechnic School, Federal University of Bahia, Salvador, BA, Brazil
| | - Carolina Oliveira de Souza
- Department of Bromatological Analysis, College of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Samantha Serra Costa
- Institute of Health Sciences, RENORBIO, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Andréa Lobo Miranda
- Institute of Health Sciences, RENORBIO, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Jaff Ribeiro da Silva
- Department of Bromatological Analysis, College of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Janice Izabel Druzian
- Department of Bromatological Analysis, College of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| |
Collapse
|
4
|
Hamamoto K, Miyahara M, Kouzuma A, Matsumoto A, Yoda M, Ishiguro T, Watanabe K. Evaluation of microbial fuel cells for electricity generation from oil-contaminated wastewater. J Biosci Bioeng 2016; 122:589-593. [DOI: 10.1016/j.jbiosc.2016.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 11/30/2022]
|
5
|
Cruz MV, Araújo D, Alves VD, Freitas F, Reis MA. Characterization of medium chain length polyhydroxyalkanoate produced from olive oil deodorizer distillate. Int J Biol Macromol 2016; 82:243-8. [DOI: 10.1016/j.ijbiomac.2015.10.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 10/12/2015] [Accepted: 10/14/2015] [Indexed: 11/16/2022]
|
7
|
Zribi-Maaloul E, Trabelsi I, Elleuch L, Chouayekh H, Ben Salah R. Purification and characterization of two polyhydroxyalcanoates from Bacillus cereus. Int J Biol Macromol 2013; 61:82-8. [DOI: 10.1016/j.ijbiomac.2013.06.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/21/2013] [Accepted: 06/26/2013] [Indexed: 10/26/2022]
|
8
|
Effect of saturated and unsaturated fatty acid supplementation on bio-plastic production under submerged fermentation. 3 Biotech 2013; 3:389-397. [PMID: 28324333 PMCID: PMC3781265 DOI: 10.1007/s13205-012-0110-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 12/14/2012] [Indexed: 11/16/2022] Open
Abstract
Polyhydroxyalkanoates (PHAs) are intracellular reserve material stored by gram-negative bacteria under nutrient-limited condition. PHAs are utilized in biodegradable plastics (bio-plastics) synthesis due to their similarity with conventional synthetic plastic. In the present study, the effect of addition of saturated and unsaturated fatty acids (palmitic acid, stearic acid, oleic acid and linoleic acid) on the production of PHAs by the soil bacterium Alcaligenes sp. NCIM 5085 was studied. Fatty acid supplementation in basal media produced saturated and unsaturated PHAs of medium and short chain length. Gas chromatography analysis of palmitic acid-supplemented media showed the presence of short chain length (scl) PHAs which could potentially serve as precursors for bio-plastic production. The scl PHA was subsequently characterized as PHB by NMR and FTIR. On the other hand, oleic acid and linoleic acid addition showed both saturated and unsaturated PHAs of different chain lengths. Palmitic acid showed maximum PHB content of 70.8 % at concentration of 15 g l−1 under shake flask cultivation. When shake flask cultivation was scaled up in a 7.5-l bioreactor (working volume 3 l), 7.6 g l−1 PHA was produced with a PHB yield (YP/X) and productivity of 75.89 % and 0.14 g l−1 h, respectively.
Collapse
|
10
|
Biotechnological utilization of biodiesel-derived glycerol for the production of ribonucleotides and microbial biomass. Appl Biochem Biotechnol 2012; 167:2054-67. [PMID: 22653682 DOI: 10.1007/s12010-012-9749-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 05/17/2012] [Indexed: 10/28/2022]
Abstract
Ten yeast strains were evaluated concerning their capabilities to assimilate biodiesel-derived glycerol in batch cultivation. The influence of glycerol concentration, temperature, pH and yeast extract concentration on biomass production was studied for the yeast selected. Further, the effect of agitation on glycerol utilization by the yeast Hansenula anomala was also studied. The yeast H. anomala CCT 2648 showed the highest biomass yield (0.30 g g(-1)) and productivity (0.19 g L(-1) h(-1)). Citric acid, succinic acid, acetic acid and ethanol were found as the main metabolites produced. The increase of yeast extract concentration from 1 to 3 g L(-1) resulted in high biomass production. The highest biomass concentration (21 g L(-1)), yield (0.45 g g(-1)) and productivity (0.31 g L(-1) h(-1)), as well as ribonucleotide production (13.13 mg g(-1)), were observed at 700 rpm and 0.5 vvm. These results demonstrated that glycerol from biodiesel production process showed to be a feasible substrate for producing biomass and ribonucleotides by yeast species.
Collapse
|