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Li H, Chen S, Wang M, Shi S, Zhao W, Xiong G, Zhou J, Qu J. Phosphate solubilization and plant growth properties are promoted by a lactic acid bacterium in calcareous soil. Appl Microbiol Biotechnol 2024; 108:24. [PMID: 38159115 DOI: 10.1007/s00253-023-12850-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/19/2023] [Accepted: 10/03/2023] [Indexed: 01/03/2024]
Abstract
On the basis of good phosphate solubilization ability of a lactic acid bacteria (LAB) strain Limosilactobacillus sp. LF-17, bacterial agent was prepared and applied to calcareous soil to solubilize phosphate and promote the growth of maize seedlings in this study. A pot experiment showed that the plant growth indicators, phosphorus content, and related enzyme activity of the maize rhizospheric soils in the LF treatment (treated with LAB) were the highest compared with those of the JP treatment (treated with phosphate solubilizing bacteria, PSB) and the blank control (CK). The types of organic acids in maize rhizospheric soil were determined through LC-MS, and 12 acids were detected in all the treatments. The abundant microbes belonged to the genera of Lysobacter, Massilia, Methylbacillus, Brevundimonas, and Limosilactobacillus, and they were beneficial to dissolving phosphate or secreting growth-promoting phytohormones, which were obviously higher in the LF and JP treatments than in CK as analyzed by high-throughput metagenomic sequencing methods. In addition, the abundance values of several enzymes, Kyoto Encyclopedia of Genes and Genomes (KEGG) orthology, and Carbohydrate-Active Enzymes (CAZys), which were related to substrate assimilation and metabolism, were the highest in the LF treatment. Therefore, aside from phosphate-solubilizing microorganisms, LAB can be used as environmentally friendly crop growth promoters in agriculture and provide another viable option for microbial fertilizers. KEY POINTS: • The inoculation of LAB strain effectively promoted the growth and chlorophyll synthesis of maize seedlings. • The inoculation of LAB strain significantly increased the TP content of maize seedlings and the AP concentration of the rhizosphere soil. • The inoculation of LAB strain increased the abundances of the dominant beneficial functional microbes in the rhizosphere soil.
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Affiliation(s)
- Haifeng Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China.
| | - Siyuan Chen
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Mengyu Wang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shuoshuo Shi
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Wenjian Zhao
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Guoyang Xiong
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Jia Zhou
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Jianhang Qu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
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Parecha D, Alfano A, Cimini D, Schiraldi C. Vegan grade medium component screening and concentration optimization for the fermentation of the probiotic strain Lactobacillus paracasei IMC 502® using Design of Experiments. J Ind Microbiol Biotechnol 2024; 51:kuae016. [PMID: 38658186 PMCID: PMC11099668 DOI: 10.1093/jimb/kuae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
Lactobacillus paracasei IMC502® is a commercially successful probiotic strain. However, there are no reports that investigate growth medium composition in relation to improved biomass production for this strain. The major outcome of the present study is the design and optimization of a growth medium based on vegan components to be used in the cultivation of Lactobacillus paracasei IMC502®, by using Design of Experiments. Besides comparing different carbon sources, the use of plant-based peptones as nitrogen sources was considered. In particular, the use of guar peptone as the main nitrogen source, in the optimization of fermentation media for the production of probiotics, could replace other plant peptones (e.g. potato, rice, wheat, and soy) which are part of the human diet, thereby avoiding an increase in product and process prices. A model with R2 and adjusted R2 values higher than 95% was obtained. Model accuracy was equal to 94.11%. The vegan-optimized culture medium described in this study increased biomass production by about 65% compared to growth on De Man-Rogosa-Sharpe (MRS) medium. Moreover, this approach showed that most of the salts and trace elements generally present in MRS are not affecting biomass production, thus a simplified medium preparation can be proposed with higher probiotic biomass yield and titer. The possibility to obtain viable lactic acid bacteria at high density from vegetable derived nutrients will be of great interest to specific consumer communities, opening the way to follow this approach with other probiotics of impact for human health.
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Affiliation(s)
- Darshankumar Parecha
- University of Campania Luigi Vanvitelli, Department of Experimental Medicine, 80138 Naples, Italy
| | - Alberto Alfano
- University of Campania Luigi Vanvitelli, Department of Experimental Medicine, 80138 Naples, Italy
| | - Donatella Cimini
- University of Campania Luigi Vanvitelli, Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, 81100 Caserta, Italy
| | - Chiara Schiraldi
- University of Campania Luigi Vanvitelli, Department of Experimental Medicine, 80138 Naples, Italy
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Xiong J, Liu DM, Huang YY. Exopolysaccharides from Lactiplantibacillus plantarum: isolation, purification, structure–function relationship, and application. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-023-04237-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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Effect of different drying methods on the functional properties of probiotics encapsulated using prebiotic substances. Appl Microbiol Biotechnol 2023; 107:1575-1588. [PMID: 36729228 DOI: 10.1007/s00253-023-12398-3] [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: 07/26/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 02/03/2023]
Abstract
Probiotics and prebiotics together work synergistically as synbiotics and confer various health benefits. Many studies on synbiotic foods only focus on the survival of probiotics but fail to evaluate their functional properties. The impact on functional properties should be explored to better understand its therapeutic efficacy. In this work, probiotics (Lactiplantibacillus plantarum NCIM 2083) were encapsulated with prebiotics (fructooligosaccharide + whey protein + maltodextrin) using spray-drying (SD), freeze-drying (FD), spray-freeze-drying (SFD), and refractance window-drying (RWD) techniques. Aggregation, intestinal adhesion, antagonistic activity, and bile salt hydrolase (BSH) activity of probiotics were studied before and after the encapsulation process. The SFD probiotics showed better aggregation ability (79% at 24-h incubation), on par with free cells (FC) (81% at 24-h incubation). The co-aggregation ability of encapsulated probiotics has drastic variations with each pathogenic strain. The adhesion ability of probiotics in chicken intestinal mucus was assessed by the crystal violet method, indicating no significant variations between FC and SFD probiotics. Also, encapsulated probiotics exhibit antagonistic activity (zone of inhibition in mm) against gut pathogens E. coli (11.33 to 17.34), S. faecalis (8.83 to 15.32), L. monocytogenes (13.67 to 18), S. boydii (12.17 to 15.5), and S. typhi (2.17 to 6.86). Overall, these studies confirm the significance and impact of various drying techniques on the functionality of encapsulated probiotics in synbiotic powders. KEY POINTS: • Understanding the relevance of processing effects on the functionality of probiotics. • Spray-freeze-dried probiotics showed superior functional properties. • The encapsulation process had no significant impact on bile salt hydrolase activity.
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Sarangi PK, Anand Singh T, Joykumar Singh N, Prasad Shadangi K, Srivastava RK, Singh AK, Chandel AK, Pareek N, Vivekanand V. Sustainable utilization of pineapple wastes for production of bioenergy, biochemicals and value-added products: A review. BIORESOURCE TECHNOLOGY 2022; 351:127085. [PMID: 35358673 DOI: 10.1016/j.biortech.2022.127085] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 05/27/2023]
Abstract
Agricultural residues play a pivotal role in meeting the growing energy and bulk chemicals demand and food security of society. There is global concern about the utilization of fossil-based fuels and chemicals which create serious environmental problems. Biobased sustainable fuels can afford energy and fuels for future generations. Agro-industrial waste materials can act as the alternative way for generating bioenergy and biochemicals strengthening low carbon economy. Processing of pineapple generates about 60% of the weight of the original pineapple fruit in the form of peel, core, crown end, and pomace that can be converted into bioenergy sources like bioethanol, biobutanol, biohydrogen, and biomethane along with animal feed and vermicompost as described in this paper. This paper also explains about bioconversion process towards the production of various value-added products such as phenolic anti-oxidants, bromelain enzyme, phenolic flavour compounds, organic acids, and animal feed towards bioeconomy.
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Affiliation(s)
- Prakash Kumar Sarangi
- College of Agriculture, Central Agricultural University, Imphal 795 004 Manipur, India
| | - Thangjam Anand Singh
- College of Agriculture, Central Agricultural University, Imphal 795 004 Manipur, India
| | - Ng Joykumar Singh
- College of Agriculture, Central Agricultural University, Imphal 795 004 Manipur, India
| | - Krushna Prasad Shadangi
- Department of Chemical Engineering, Veer Surendra Sai University of Technology, Burla Sambalpur 768 018, Odisha, India
| | - Rajesh K Srivastava
- Department of Biotechnology, GIT, GITAM (Deemed to be University) Visakhapatnam, 530 045 Andhra Pradesh, India
| | - Akhilesh K Singh
- Department of Biotechnology, Mahatma Gandhi Central University, Motihari, 845 401 Bihar, India
| | - Anuj K Chandel
- Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo (USP), Lorena, São Paulo, Brazil
| | - Nidhi Pareek
- Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer 305 817, Rajasthan, India
| | - Vivekanand Vivekanand
- Center for Energy and Environment, Malaviya National Institute of Technology Jaipur, 302 017 Rajasthan, India.
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Optimization of Lactic Acid Production from Pineapple By-Products and an Inexpensive Nitrogen Source Using Lactiplantibacillus plantarum strain 4O8. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2021; 2021:1742018. [PMID: 34712725 PMCID: PMC8548162 DOI: 10.1155/2021/1742018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/12/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
Lactic acid (LA) is used in food, cosmetic, chemical, and pharmaceutical industries and has recently attracted much attention in the production of biodegradable polymers. The expensive substances including carbon and nitrogen sources involved in its fermentative synthesis and the increasing market demand of LA have prompted scientists to look for inexpensive raw materials from which it can be produced. This research was aimed at determining the optimum conditions of lactic acid (LA) production from pineapple by-products and an inexpensive nitrogen source using Lactiplantibacillus plantarum strain 4O8. After collection and preparation of the carbon source (pineapple by-products) and nitrogen sources (by-products from fish, chicken, and beer brewing industries), they were used for the formulation of 4 different media in terms of nitrogen sources. Then, the proximate compositions of promising nitrogen sources were determined. This was followed by the screening of factors (temperature, carbon source, nitrogen source, MgSO4, MnSO4, FeSO4, KH2PO4, and KHPO4) influencing the production of LA using the definitive plan. Lastly, the optimization process was done using the central composite design. The highest LA productions (14.64 ± 0.05 g/l and 13.4 ± 0.02 g/l) were obtained in production medium supplemented with chicken and fish by-products, respectively, making them the most promising sources of nitrogen. The proximate analysis of these nitrogen sources revealed that their protein contents were 83.00 ± 1.41% DM and 74.00 ± 1.41% DM for chicken by-products and fish by-products, respectively. Concerning the screening of factors, temperature, nitrogen source, and carbon source were the factors that showed a major impact on LA production in the production medium containing chicken by-products as nitrogen source. A pineapple by-product concentration of 141.75 g/l, a nitrogen source volume of 108.99 ml/l, and a temperature of 30.89°C were recorded as the optimum conditions for LA production. The optimization led to a 2.73-fold increase in LA production when compared with the production medium without nitrogen source. According to these results, chicken by-products are a promising and an inexpensive nitrogen source that can be an alternative to yeast extract in lactic acid production.
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