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Wang Y, Zhang X, Chen Y. The enhancement of caproic acid synthesis from organic solid wastes: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 371:123215. [PMID: 39504670 DOI: 10.1016/j.jenvman.2024.123215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 10/13/2024] [Accepted: 11/01/2024] [Indexed: 11/08/2024]
Abstract
Organic solid waste (OSW) significantly harms the environment and threatens human health. Producing caproic acid (CA) from OSW presents a cost-effective, sustainable, and resource-efficient solution. This study comprehensively examines the various methods for synthesizing CA from OSW, focusing on waste material selection, pretreatment processes to improve dissolution and hydrolysis of OSW, key substrates, and optimization strategies. Using OSW resources has been extensively studied and applied across numerous industries, presenting a promising solution for reducing environmental pollution. This study provides insights into CA synthesis pathways and substrate selection while emphasizing the optimization of CA production from OSW. It also highlights key areas for future research.
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Affiliation(s)
- Yidan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Xuemeng Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Yinguang Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
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Xie W, Wang X, Cai J, Bai H, Shao Y, Li Z, Cai L, Zhang S, Li J, Cui W, Jiang Y, Tang L. Optimum Fermentation Conditions for Bovine Lactoferricin-Lactoferrampin-Encoding LimosiLactobacillus reuteri and Regulation of Intestinal Inflammation. Foods 2023; 12:4068. [PMID: 38002126 PMCID: PMC10670345 DOI: 10.3390/foods12224068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/02/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
The multifunctional antibacterial peptide lactoferricin-lactoferrampin (LFCA) is derived from bovine lactoferrin. Optimization of the fermentation process should be studied since different microorganisms have their own favorable conditions and processes for growth and the production of metabolites. In this study, the culture conditions of a recombinant strain, pPG-LFCA-E/LR-CO21 (LR-LFCA), expressing LFCA was optimized, utilizing the high-density fermentation process to augment the biomass of LimosiLactobacillus reuteri and the expression of LFCA. Furthermore, an assessment of the protective effect of LR-LFCA on intestinal inflammation induced by lipopolysaccharide (LPS) was conducted to evaluate the impact of LR-LFCA on the disease resistance of piglets. The findings of this study indicate that LR-LFCA fermentation conditions optimally include 2% inoculation volume, 36.5 °C fermentation temperature, 9% dissolved oxygen concentration, 200 revolutions/minute stirring speed, pH 6, 10 mL/h glucose flow, and 50% glucose concentration. The inclusion of fermented LR-LFCA in the diet resulted in an elevation of immunoglobulin levels, significant upregulation of tight junction proteins ZO-1 and occludin, reinforcement of the intestinal barrier function, and significant amelioration of the aberrant alterations in blood physiological parameters induced by LPS. These results offer a theoretical framework for the implementation of this micro-ecological preparation in the field of piglet production to enhance intestinal well-being.
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Affiliation(s)
- Weichun Xie
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Xueying Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Jiyao Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Huitao Bai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Yilan Shao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Zhuoran Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Limeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Senhao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Jiaxuan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (W.X.); (X.W.); (J.C.); (H.B.); (Y.S.); (Z.L.); (L.C.); (S.Z.); (J.L.); (W.C.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Northeast Agricultural University, Harbin 150030, China
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Zhang X, Liu X, Zhang N, Zhao X, Li Y, Gong D, Yun Y. Development of chemically defined media for Lactococcus lactis subsp. lactis YF11 to eliminate the influence of hyperosmotic stress. 3 Biotech 2023; 13:375. [PMID: 37873496 PMCID: PMC10590357 DOI: 10.1007/s13205-023-03788-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 09/24/2023] [Indexed: 10/25/2023] Open
Abstract
Chemically defined media (CDM) can eliminate or lessen the interference that occurs in complex culture media (CCM) caused by the undefined substrate pools, and various CDM have been designed and employed for investigating microbial physiology and multiomics. Herein, using the measured amount of total amino acids in CCM and combined with the in vivo and in vitro amino acid content of Lactococcus lactis subsp. lactis YF11, new enriched CDM were designed and then optimized using a statistical design-of-experiment method coupling with fed-batch fermentation to eliminate or lessen the influence of hyperosmotic pressure. Cell volume was introduced as a target index to assess the performance of CDM, and average osmotic pressure (AOP) was employed to describe the osmotic pressure of CDM. The AOP was significantly decreased from 610 mOsm/kg·H2O in the initial CDM (I-CDM) to 360 mOsm/kg·H2O in fed-batch CDM (F-CDM), and the cell volume was increased from 0.142 ± 0.004 μm3 in I-CDM to 0.198 ± 0.008 μm3 in F-CDM, which was close to 0.206 ± 0.005 μm3 found in CCM, indicating that the strategy of designing and improving CDM followed by a statistical design-of-experiment coupling with fed-batch cultivation presented a promising pathway for extensive utilization of CDM. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03788-5.
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Affiliation(s)
- Xiaoli Zhang
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Xiaodan Liu
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Nan Zhang
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Xinru Zhao
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Yali Li
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Donghui Gong
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
| | - Yueying Yun
- Inner Mongolia Key Laboratory of Biomass-Energy Conversion, School of Life Science and Technology, Inner Mongolia University of Science and Technology, 7 Aerding Street, Baotou, 014010 People’s Republic of China
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Influence of anaerobic biotransformation process of agro-industrial waste with Lactobacillus acidophilus on the rheological parameters: case of study of pig manure. Arch Microbiol 2023; 205:99. [PMID: 36853421 DOI: 10.1007/s00203-023-03437-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/30/2023] [Accepted: 02/09/2023] [Indexed: 03/01/2023]
Abstract
This study evaluated the rheological behavior of the pig waste biotransformation process to produce lactic acid (LA) and biomass with Lactobacillus acidophilus in a stirred reactor. In addition, cell growth, carbohydrate consumption, and LA production were measured at three different agitation speeds, 100, 150, and 200 rpm at 37 °C, with a reaction time of 52 h. During the development of the process, the kinetic and rheological parameters were obtained using the logistic, Gompertz, generalized Gompertz, Ostwald de Waele, and Herschel-Bulkley mathematical models, respectively. The substrate used was pig manure, to which molasses was added at 12% v/v to increase the concentration of carbohydrates. The results suggest that mass exchange is favorable at low agitation speeds. Nevertheless, the presence of molasses rich in carbohydrates as a carbon source modifies the characteristics of the fluid, dilatant (n > 1) at the beginning of the process to end up as pseudoplastic (n < 1) due to the addition of exopolysaccharides and the modification of the physical structure of the substrate. This effect was confirmed by the Herschel-Bulkley model, which presented a better fit to the data obtained, in addition to finding a direct relationship between viscosity and pH that can be used as variables for the control of bioconversion processes of pig manure into biomass rich in Lactobacillus acidophilus.
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Production of L (+) Lactic Acid by Lactobacillus casei Ke11: Fed Batch Fermentation Strategies. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7030151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lactic acid and its derivatives are widely used in pharmaceutical, leather, textile and food industries. However, until now there have been few systematic reports on fed-batch fermentation for efficient production and high concentration of l-lactic acid by lactic acid bacteria. This study describes the obtainment of L (+) lactic acid from sucrose using the Lactobacillus casei Ke11 strain through different feeding strategies using an accessible pH neutralizer such as CaCO3. The exponential feeding strategy can increase lactic acid production and productivity (175.84 g/L and 3.74 g/L/h, respectively) with a 95% yield, avoiding inhibition by high initial substrate concentration and, combined with the selected agent controller, avoids the cellular stress that could be caused by the high osmotic pressure of the culture media. The purification of the acid using charcoal and celite, followed by the use of a cation exchange column proved to be highly efficient, allowing a high yield of lactic acid, high removal of sugars and proteins. The described process shows great potential for the production of lactic acid, as well as the simple, efficient and low-cost purification method. This way, this work is useful to the large-scale fermentation of L. casei Ke11 for production of l-lactic acid.
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