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Lian Y, Song J, Mumby W, Suo H, Zhang Y. The correlation between flavor formation and microbial community dynamics during the fermentation of zha cai. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6233-6241. [PMID: 38451122 DOI: 10.1002/jsfa.13447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/29/2023] [Accepted: 03/07/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND Zha cai, a pickled vegetable with unique flavors, is produced by fermenting fresh mustard tubers. In this study, the main physicochemical indices and volatile flavor compounds were determined in three fermentation periods. The bacterial and fungal communities in the three fermentation periods of zha cai were also monitored using high-throughput sequencing. Key microbial communities were identified based on significant correlations with flavor substances. RESULTS Firmicutes and Proteobacteria were the main bacterial phyla found within the three fermentation periods. Lactic acid bacteria, namely Lactobacillus, was the predominant bacteria found at the genus level. Ascomycetes and Stenotrophomonas were the major fungal phyla found in the three fermentation periods. Yeast, namely Debaryomyces, was the predominant fungus found at the genus level. A total of 42 bacterial genera were negatively correlated with volatile flavor substances of zha cai, and 37 bacterial genera were positively correlated. Meanwhile, a total of 47 genera of fungi were negatively correlated with the volatile flavor substances of zha cai, while 50 genera were positively correlated. Several microbial genera were significantly correlated with volatile flavor compounds, including Lactobacillus, Halomonas, Rhodococcus, and Debaryomyces. CONCLUSION This study identified the microbial classes that positively regulate the flavor of zha cai which could provide valuable help for flavor modulation in zha cai production. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yinyin Lian
- School of Food Science, Southwest University, Chongqing, China
- National Teaching Demonstration Center of Food Science and Engineering of Southwest University, Southwest University, Chongqing, China
| | - Jiajia Song
- School of Food Science, Southwest University, Chongqing, China
| | - William Mumby
- College of Health and Human Sciences, Florida State University, Tallahassee, Florida, USA
| | - Huayi Suo
- School of Food Science, Southwest University, Chongqing, China
| | - Yu Zhang
- School of Food Science, Southwest University, Chongqing, China
- National Teaching Demonstration Center of Food Science and Engineering of Southwest University, Southwest University, Chongqing, China
- National Citrus Engineering Research Center, Southwest University, Chongqing, China
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Benítez-Mateos AI, Paradisi F. Halomonas elongata: a microbial source of highly stable enzymes for applied biotechnology. Appl Microbiol Biotechnol 2023; 107:3183-3190. [PMID: 37052635 PMCID: PMC10160191 DOI: 10.1007/s00253-023-12510-7] [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: 02/15/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/14/2023]
Abstract
Extremophilic microorganisms, which are resistant to extreme levels of temperature, salinity, pH, etc., have become popular tools for biotechnological applications. Due to their availability and cost-efficacy, enzymes from extremophiles are getting the attention of researchers and industries in the field of biocatalysis to catalyze diverse chemical reactions in a selective and sustainable manner. In this mini-review, we discuss the advantages of Halomonas elongata as moderate halophilic bacteria to provide suitable enzymes for biotechnology. While enzymes from H. elongata are more resistant to the presence of salt compared to their mesophilic counterparts, they are also easier to produce in heterologous hosts compared with more extremophilic microorganisms. Herein, a set of different enzymes (hydrolases, transferases, and oxidoreductases) from H. elongata are showcased, highlighting their interesting properties as more efficient and sustainable biocatalysts. With this, we aim to improve the visibility of halotolerant enzymes and their uncommon properties to integrate biocatalysis in industrial set-ups. KEYPOINTS: • Production and use of halotolerant enzymes can be easier than strong halophilic ones. • Enzymes from halotolerant organisms are robust catalysts under harsh conditions. • Halomonas elongata has shown a broad enzyme toolbox with biotechnology applications.
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Affiliation(s)
- Ana I Benítez-Mateos
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.
| | - Francesca Paradisi
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.
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Balci E, Rosales E, Pazos M, Sofuoglu A, Sanroman MA. Continuous treatment of diethyl hexyl and dibutyl phthalates by fixed-bed reactor: Comparison of two esterase bionanocomposites. BIORESOURCE TECHNOLOGY 2022; 363:127990. [PMID: 36130686 DOI: 10.1016/j.biortech.2022.127990] [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: 08/03/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 06/15/2023]
Abstract
The removal of Diethyl hexyl phthalate (DEHP) and Dibutyl phthalate (DBP) is of great importance due to their potential adverse effects on the environment and human health. In this study, two bionanocomposites prepared by immobilization of Bacillus subtilis esterase by crosslinking to halloysite and supported in chitosan and alginate beads were studied and proposed as a green approach. The esterase immobilization was confirmed by physical-chemical characterization. Bionanocomposite using chitosan showed the best degradation levels in batch tests attaining complete degradation of DBP and around 90% of DEHP. To determine the operational stability and efficiency of the system, two fixed bed reactors filled with both bionanocomposites were carried out operating in continuous mode. Chitosan based bionanocomposite showed the best performance being able to completely remove DBP and more than 85% of DEHP at the different flowrates. These results proved the potential of these synthesized bionanocomposites to effectively remove Phthalic Acid Esters.
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Affiliation(s)
- Esin Balci
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain; Izmir Institute of Technology, Faculty of Engineering, Department of Environmental Engineering, 35430 Urla/İzmir, Turkey
| | - Emilio Rosales
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Marta Pazos
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Aysun Sofuoglu
- Izmir Institute of Technology, Faculty of Engineering, Department of Chemical Engineering, 35430 Urla/İzmir, Turkey
| | - Maria Angeles Sanroman
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
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Biswas J, Jana SK, Mandal S. Biotechnological impacts of Halomonas: a promising cell factory for industrially relevant biomolecules. Biotechnol Genet Eng Rev 2022:1-30. [PMID: 36253947 DOI: 10.1080/02648725.2022.2131961] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/27/2022] [Indexed: 11/02/2022]
Abstract
Extremophiles are the most fascinating life forms for their special adaptations and ability to offer unique extremozymes or bioactive molecules. Halophiles, the natural inhabitants of hypersaline environments, are one among them. Halomonas are the common genus of halophilic bacteria. To support growth in unusual environments, Halomonas produces various hydrolytic enzymes, compatible solutes, biopolymers like extracellular polysaccharides (EPS) and polyhydroxy alkaloates (PHA), antibiotics, biosurfactants, pigments, etc. Many of such molecules are being produced in large-scale bioreactors for commercial use. However, the prospect of the remaining bioactive molecules with industrial relevance is far from their application. Furthermore, the genetic engineering of the respective gene clusters could open up a new path to bio-prospect these molecules by overproducing their products through heterologous expression. The present survey on Halomonas highlights their ecological diversity, application potential of the their various industrially relevant biomolecules and impact of these biomolecules on respective fields.
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Affiliation(s)
- Jhuma Biswas
- Laboratory of Molecular Bacteriology, Department of Microbiology, University of Calcutta, Kolkata, India
| | - Santosh Kumar Jana
- Laboratory of Molecular Bacteriology, Department of Microbiology, University of Calcutta, Kolkata, India
| | - Sukhendu Mandal
- Laboratory of Molecular Bacteriology, Department of Microbiology, University of Calcutta, Kolkata, India
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Johan UUM, Rahman RNZRA, Kamarudin NHA, Latip W, Ali MSM. A new hyper-thermostable carboxylesterase from Anoxybacillus geothermalis D9. Int J Biol Macromol 2022; 222:2486-2497. [DOI: 10.1016/j.ijbiomac.2022.10.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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Draft Genome Sequence of a Bacterium Isolated from Hypersaline Soil in Sonora, Mexico: Halomonas sp. Strain BLLS135. Microbiol Resour Announc 2022; 11:e0140920. [PMID: 35175110 PMCID: PMC8852318 DOI: 10.1128/mra.01409-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Halomonas sp. strain BLLS135 was isolated from hypersaline soil in Mexico. Here, we present the draft genome of this strain. Its genome has 2,861 protein-coding genes, 63 tRNAs, two 16S rRNAs, five 5S rRNAs, and a single copy of 23S rRNA, with a GC content of 63.5%.
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Affiliation(s)
- Divya Sharma
- Department of Biotechnology, Himachal Pradesh University, Shimla, India
| | | | - Reena Gupta
- Department of Biotechnology, Himachal Pradesh University, Shimla, India
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Dutta B, Nigam VK, Panja AS, Shrivastava S, Bandopadhyay R. Statistical optimisation of esterase from Salinicoccus roseus strain RF1H and its potential application in synthetic dye decolorisation. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.2010718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Bhramar Dutta
- Department of Botany, The University of Burdwan, Bardhaman, India
| | - Vinod Kumar Nigam
- Department of Bio-Engineering, Birla Institute of Technology, Ranchi, India
| | - Anindya Sundar Panja
- Post-Graduate Department of Biotechnology and Biochemistry, Oriental Institute of Science and Technology, Burdwan, India
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Liang X, Liu Y, Wen K, Jiang W, Li Q. Immobilized enzymes in inorganic hybrid nanoflowers for biocatalytic and biosensing applications. J Mater Chem B 2021; 9:7597-7607. [PMID: 34596205 DOI: 10.1039/d1tb01476e] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Enzyme immobilization has been accepted as a powerful technique to solve the drawbacks of free enzymes such as limited activity, stability and recyclability under harsh conditions. Different from the conventional immobilization methods, enzyme immobilization in inorganic hybrid nanoflowers was executed in a biomimetic mineralization manner with the advantages of mild reaction conditions, and thus it was beneficial to obtain ideal biocatalysts with superior characteristics. The key factors influencing the formation of enzyme-based inorganic hybrid nanoflowers were elucidated to obtain a deeper insight into the mechanism for achieving unique morphology and improved properties of immobilized enzymes. To date, immobilized enzymes in inorganic hybrid nanoflowers have been successfully applied in biocatalysis for preparing medical intermediates, biodiesel and biomedical polymers, and solving the environmental or food industrial issues such as the degradation of toxic dyes, pollutants and allergenic proteins. Moreover, they could be used in the development of various biosensors, which provide a promising platform to detect toxic substances in the environment or biomarkers associated with various diseases. We hope that this review will promote the fundamental research and wide applications of immobilized enzymes in inorganic hybrid nanoflowers for expanding biocatalysis and biosensing.
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Affiliation(s)
- Xiao Liang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.
| | - Yong Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.
| | - Kai Wen
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.
| | - Wei Jiang
- Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China.
| | - Quanshun Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.
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