1
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Bircher L, Sourabié AM, Paurevic M, Hochuli J, Geirnaert A, Navas C, Drogue B, Lacroix C. Faecalibacterium duncaniae A2-165 growth is strongly promoted by yeast extract and vitamin B5 in cGMP medium. Microb Biotechnol 2024; 17:e14374. [PMID: 38019136 PMCID: PMC10832529 DOI: 10.1111/1751-7915.14374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/30/2023] Open
Abstract
Several gut microbial species within the Faecalibacterium genus have emerged as promising next-generation probiotics (NGP) due to their multifunctional protective effects against gastrointestinal and systemic disorders. To enable clinical studies and further applications, improved methods for cultivating Faecalibacterium must be developed in compliance with current Good Manufacturing Practice regulations, which is complicated by its oxygen sensitivity and complex nutritional requirements. Different yeast-based nutrients (YBNs), including yeast extracts (YEs) and yeast peptones (YPs), are ubiquitously used when cultivating microbes to supply a broad range of macro- and micronutrients. In this study, we evaluated six experimental YBNs, namely three YEs, two YPs and a yeast cell wall product (YCW), and eight B-vitamins in the cultivation of Faecalibacterium duncaniae A2-165, former Faecalibacterium prausnitzii, using growth assays in microtitre plates, dose-effect studies in Hungate tube fermentations and fully controlled bioreactor experiments. We demonstrated that YEs promote F. duncaniae A2-165 growth in a nutritionally limited medium, while YPs and YCW lacked essential growth factors for enabling cell propagation. High cell density was obtained in controlled bioreactors using a medium containing 2-4% of a selected YE and 1% casein peptone (3.4 ± 1.7 × 109 -5.1 ± 1.3 × 109 cells mL-1 ). Among all tested B-vitamins, we identified B5 as a strong growth promoter. Replacing casein peptone with YP and supplementing with vitamin B5 further increased biomass by approximately 50% (6.8 ± 1.7 × 109 cells mL-1 ). Hence, empirical selection of YE, YP and B5 allowed formulation of a high-yielding animal allergen-free nutritive medium to produce F. duncaniae A2-165. Selecting nutritionally suitable YBNs and combining these with other key nutrients are important steps for optimizing production of NGP with high yields and lower cost.
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Affiliation(s)
- Lea Bircher
- Department Health Science and Technology, Laboratory of Food Biotechnology, Institute of Food, Nutrition and HealthETH ZurichZürichSwitzerland
| | - Alain M. Sourabié
- Science Technology and Innovation DepartmentProcelys by LeSaffreMaisons‐AlfortFrance
| | - Marijana Paurevic
- Department Health Science and Technology, Laboratory of Food Biotechnology, Institute of Food, Nutrition and HealthETH ZurichZürichSwitzerland
| | - Janina Hochuli
- Department Health Science and Technology, Laboratory of Food Biotechnology, Institute of Food, Nutrition and HealthETH ZurichZürichSwitzerland
| | - Annelies Geirnaert
- Department Health Science and Technology, Laboratory of Food Biotechnology, Institute of Food, Nutrition and HealthETH ZurichZürichSwitzerland
| | - Chloé Navas
- Science Technology and Innovation DepartmentProcelys by LeSaffreMaisons‐AlfortFrance
| | - Benoît Drogue
- Science Technology and Innovation DepartmentProcelys by LeSaffreMaisons‐AlfortFrance
| | - Christophe Lacroix
- Department Health Science and Technology, Laboratory of Food Biotechnology, Institute of Food, Nutrition and HealthETH ZurichZürichSwitzerland
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2
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Phirom-On K, Po-Ngern A, Jaikhan S, Sirichon S, Vichitphan S, Vichitphan K, Apiraksakorn J. Understanding the hindrance factor of bacterial proliferation and γ-aminobutyric acid-producing capability of nondairy strains of Lactiplantibacillus plantarum in milk fermentation. Sci Rep 2023; 13:11464. [PMID: 37454227 PMCID: PMC10349837 DOI: 10.1038/s41598-023-38701-w] [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: 05/15/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023] Open
Abstract
γ-aminobutyric-acid (GABA) is a mental health-supporting substance that helps release anxiety and depression and improves memory. Lactiplantibacillus plantarum SKKL1, a GABA-producing bacterium, has been introduced to formulate a gut-brain axis product. However, growth and sugar consumption of L. plantarum SKKL1 in milk were ineffective. This obstacle was investigated by varying different types of milk, sugars, fermentation temperatures, and times. The results revealed that none of these parameters improved growth and bacterial metabolism in milk, except addition of soluble protein as found in yeast extract and malt extract. Although a protease deficiency of L. plantarum SKKL1 was discovered, it was not a primary barrier to cell propagation. Insight of this study showed clearly that soluble protein was an essential metabolic activator for growth, nutrient consumption, and protease synthesis, then stimulated lactic acid and GABA productions. While, milk casein and casein hydrolysate, a complex protein structure with low solubility, were not utilized by L. plantarum SKKL1. The novelty of this study is the first in-depth investigation to confirm a significant effect of soluble protein on enrich-GABA milk fermentation by L. plantarum SKKL1 as the sole starter without protease and monosodium glutamate addition.
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Affiliation(s)
- Konlarat Phirom-On
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Anuchida Po-Ngern
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Somchai Jaikhan
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sasiwan Sirichon
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sukanda Vichitphan
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
- Fermentation Research Center for Value Added Agricultural Products (FerVAAP), Khon Kaen University, Khon Kaen, Thailand
| | - Kanit Vichitphan
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand
- Fermentation Research Center for Value Added Agricultural Products (FerVAAP), Khon Kaen University, Khon Kaen, Thailand
| | - Jirawan Apiraksakorn
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand.
- Fermentation Research Center for Value Added Agricultural Products (FerVAAP), Khon Kaen University, Khon Kaen, Thailand.
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3
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Tao Z, Yuan H, Liu M, Liu Q, Zhang S, Liu H, Jiang Y, Huang D, Wang T. Yeast Extract: Characteristics, Production, Applications and Future Perspectives. J Microbiol Biotechnol 2023; 33:151-166. [PMID: 36474327 PMCID: PMC9998214 DOI: 10.4014/jmb.2207.07057] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 12/13/2022]
Abstract
Yeast extract is a product prepared mainly from waste brewer's yeast, which is rich in nucleotides, proteins, amino acids, sugars and a variety of trace elements, and has the advantages of low production cost and abundant supply of raw material. Consequently, yeast extracts are widely used in various fields as animal feed additives, food flavoring agents and additives, cosmetic supplements, and microbial fermentation media; however, their full potential has not yet been realized. To improve understanding of current research knowledge, this review summarizes the ingredients, production technology, and applications of yeast extracts, and discusses the relationship between their properties and applications. Developmental trends and future prospects of yeast extract are also previewed, with the aim of providing a theoretical basis for the development and expansion of future applications.
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Affiliation(s)
- Zekun Tao
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Haibo Yuan
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Meng Liu
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Qian Liu
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Siyi Zhang
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Hongling Liu
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Yi Jiang
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Di Huang
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
| | - Tengfei Wang
- State Key Laboratory of Bio-Based Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, P.R. China
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4
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Review: The effects of dietary yeast and yeast-derived extracts on rumen microbiota and their function. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Ayivi RD, Ibrahim SA, Krastanov A, Somani A, Siddiqui SA. The impact of alternative nitrogen sources on the growth and viability of Lactobacillus delbrueckii ssp. bulgaricus. J Dairy Sci 2022; 105:7986-7997. [DOI: 10.3168/jds.2022-21971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/03/2022] [Indexed: 11/19/2022]
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6
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Substrate size-dependent conformational changes of bacterial pectin-binding protein crucial for chemotaxis and assimilation. Sci Rep 2022; 12:12653. [PMID: 35879323 PMCID: PMC9314435 DOI: 10.1038/s41598-022-16540-5] [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] [Received: 01/20/2022] [Accepted: 07/12/2022] [Indexed: 11/08/2022] Open
Abstract
Gram-negative Sphingomonas sp. strain A1 exhibits positive chemotaxis toward acidic polysaccharide pectin. SPH1118 has been identified as a pectin-binding protein involved in both pectin chemotaxis and assimilation. Here we show tertiary structures of SPH1118 with six different conformations as determined by X-ray crystallography. SPH1118 consisted of two domains with a large cleft between the domains and substrates bound to positively charged and aromatic residues in the cleft through hydrogen bond and stacking interactions. Substrate-free SPH1118 adopted three different conformations in the open form. On the other hand, the two domains were closed in substrate-bound form and the domain closure ratio was changed in response to the substrate size, suggesting that the conformational change upon binding to the substrate triggered the expression of pectin chemotaxis and assimilation. This study first clarified that the solute-binding protein with dual functions recognized the substrate through flexible conformational changes in response to the substrate size.
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7
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Yeast Extract Affecting the Transformation of Biogenic Tooeleite and Its Stability. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12073290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Highly toxic As(III) is the main form of As in wastewater. The retention of As by tooeleite has gradually attracted attention in recent years due to its great potential for the direct removal of As(III). The existence of natural As-bearing minerals is closely related to microorganisms and organic matters. In this study, yeast extract was found to enhance the stability of biogenic tooeleite by Acidithiobacillus ferrooxidans (A. ferrooxidans). The effects of pH, Fe/As and yeast extract concentration were systematically studied, and the toxicity characteristic leaching procedure (TCLP) was conducted to evaluate the short-term stability of tooeleite. The mineral synthesized in the presence of yeast extract showed that the As leaching concentration decreased from 13.78 mg/L to 7.23 mg/L and the stability increased by more than 40%. In addition, various characteristics confirmed that the precursor was changed from amorphous schwertmannite to basic ferric sulfate in the presence of yeast extract, and then transformed to relatively purer tooeleite with less hollow structure and excellent dispersion, which is favorable for the stability of tooeleite. This result indicated that yeast extract resulted in the formation of different precursors and thus affected the transformation and stability of tooeleite.
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8
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Bloom SM, Mafunda NA, Woolston BM, Hayward MR, Frempong JF, Abai AB, Xu J, Mitchell AJ, Westergaard X, Hussain FA, Xulu N, Dong M, Dong KL, Gumbi T, Ceasar FX, Rice JK, Choksi N, Ismail N, Ndung'u T, Ghebremichael MS, Relman DA, Balskus EP, Mitchell CM, Kwon DS. Cysteine dependence of Lactobacillus iners is a potential therapeutic target for vaginal microbiota modulation. Nat Microbiol 2022; 7:434-450. [PMID: 35241796 PMCID: PMC10473153 DOI: 10.1038/s41564-022-01070-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 01/27/2022] [Indexed: 12/28/2022]
Abstract
Vaginal microbiota composition affects many facets of reproductive health. Lactobacillus iners-dominated microbial communities are associated with poorer outcomes, including higher risk of bacterial vaginosis (BV), compared with vaginal microbiota rich in L. crispatus. Unfortunately, standard-of-care metronidazole therapy for BV typically results in dominance of L. iners, probably contributing to post-treatment relapse. Here we generate an L. iners isolate collection comprising 34 previously unreported isolates from 14 South African women with and without BV and 4 previously unreported isolates from 3 US women. We also report an associated genome catalogue comprising 1,218 vaginal Lactobacillus isolate genomes and metagenome-assembled genomes from >300 women across 4 continents. We show that, unlike L. crispatus, L. iners growth is dependent on L-cysteine in vitro and we trace this phenotype to the absence of canonical cysteine biosynthesis pathways and a restricted repertoire of cysteine-related transport mechanisms. We further show that cysteine concentrations in cervicovaginal lavage samples correlate with Lactobacillus abundance in vivo and that cystine uptake inhibitors selectively inhibit L. iners growth in vitro. Combining an inhibitor with metronidazole promotes L. crispatus dominance of defined BV-like communities in vitro by suppressing L. iners growth. Our findings enable a better understanding of L. iners biology and suggest candidate treatments to modulate the vaginal microbiota to improve reproductive health for women globally.
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Affiliation(s)
- Seth M Bloom
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Nomfuneko A Mafunda
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Benjamin M Woolston
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Matthew R Hayward
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Josephine F Frempong
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Medical Scientist Training Program, Washington University School of Medicine, St Louis, MO, USA
| | - Aaron B Abai
- Harvard College, Harvard University, Cambridge, MA, USA
| | - Jiawu Xu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Alissa J Mitchell
- Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA, USA
- William Carey University College of Osteopathic Medicine, Hattiesburg, MS, USA
| | - Xavier Westergaard
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA, USA
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Fatima A Hussain
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Nondumiso Xulu
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
| | - Mary Dong
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Massachusetts General Hospital, Boston, MA, USA
| | - Krista L Dong
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | | | - Justin K Rice
- Harvard Medical School, Boston, MA, USA
- Ronald O. Perelman Department of Emergency Medicine, NYU School of Medicine, New York, NY, USA
| | - Namit Choksi
- Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA, USA
- Rishihood University - School of Healthcare, Sonepat, Haryana, India
| | - Nasreen Ismail
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
| | - Thumbi Ndung'u
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
- Africa Health Research Institute (AHRI), Durban, South Africa
- Max Planck Institute for Infection Biology, Berlin, Germany
- Division of Infection and Immunity, University College London, London, UK
| | - Musie S Ghebremichael
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - David A Relman
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Infectious Diseases Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Emily P Balskus
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Caroline M Mitchell
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA, USA
| | - Douglas S Kwon
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
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9
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Canon F, Briard-Bion V, Jardin J, Thierry A, Gagnaire V. Positive Interactions Between Lactic Acid Bacteria Could Be Mediated by Peptides Containing Branched-Chain Amino Acids. Front Microbiol 2022; 12:793136. [PMID: 35087496 PMCID: PMC8789265 DOI: 10.3389/fmicb.2021.793136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022] Open
Abstract
Lactic acid bacteria (LAB) are responsible for the sanitary, organoleptic, and health properties of most fermented products. Positive interactions between pairs of LAB strains, based on nitrogen dependencies, were previously demonstrated. In a chemically defined medium, using milk and lupin proteins as sole nitrogen source, two proteolytic strains were able to sustain the growth of non-proteolytic strains, but one did not. The objective of the present study was, thus, to determine which specific peptides were implicated in the positive interactions observed. Peptides produced and involved in the bacterial interactions were quantified using tandem mass spectrometry (LC-MS/MS). About 2,000 different oligopeptides ranging from 6 to more than 50 amino acids in length were identified during the time-course of the experiment. We performed a clustering approach to decipher the differences in peptide production during fermentation by the three proteolytic strains tested. We also performed sequence alignments on parental proteins and identified the cleavage site profiles of the three bacterial strains. Then, we characterized the peptides that were used by the non-proteolytic strains in monocultures. Hydrophobic and branched-chain amino acids within peptides were identified as essential in the interactions. Ultimately, better understanding how LAB can positively interact could be useful in multiple food-related fields, e.g., production of fermented food products with enhanced functional properties, or fermentation of new food matrices.
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Affiliation(s)
- Fanny Canon
- UMR STLO, INRAE, Institut Agro, Rennes, France
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10
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Bukhari NA, Loh SK, Luthfi AAI, Abdul PM, Jahim JM. Low cost nutrient-rich oil palm trunk bagasse hydrolysate for bio-succinic acid production by Actinobacillus succinogenes. Prep Biochem Biotechnol 2021; 52:950-960. [PMID: 34935581 DOI: 10.1080/10826068.2021.2015692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Economical source of succinic acid (SA) is most sought-after as a key platform chemical for a wide range of applications. Low-cost production of bio-succinic acid (bio-SA) from a renewable biomass resource i.e., oil palm trunk (OPT) is reported in this paper. Apart from carbon source, nitrogen source and mineral salts are other important nutrients affecting microbial cell growth and bio-SA biosynthesis by Actinobacillus succinogenes 130Z. In order to access and optimize nutrient requirement of the latter two sources, their effects in terms of types and concentrations were investigated. The findings highlighted the importance of selecting proper nitrogen source in A. succinogenes fermentation. The possibility of producing bio-SA from OPT economically can be achieved through minimal supply of 5 g/L yeast extract compared to that generally supplemented 15 g/L with a similar yield (0.47 g/g). In addition, a higher bio-SA yield (0.49 g/g) was achieved without adding mineral salts, which could further reduce fermentation cost. The use of minimally supplemented hydrolysate resulted in 21.1 g/L of bio-SA with a satisfactory yield (0.58 g/g) in a batch bioreactor system with an estimated 56.4% in cost savings. Conclusively, OPT bagasse hydrolysate is a nutrient-rich feedstock that can be practically utilized for bio-SA production.
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Affiliation(s)
- Nurul Adela Bukhari
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.,Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.,Energy and Environment Unit, Engineering and Processing Research Division, Malaysian Palm Oil Board (MPOB), Selangor, Kajang, Malaysia
| | - Soh Kheang Loh
- Energy and Environment Unit, Engineering and Processing Research Division, Malaysian Palm Oil Board (MPOB), Selangor, Kajang, Malaysia
| | - Abdullah Amru Indera Luthfi
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.,Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Peer Mohamed Abdul
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.,Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Jamaliah Md Jahim
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia.,Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
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11
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Jiang Y, Shi Y, Li R, Hang F, Zhao J, Zhang H, Chen W. The peptides in oat and malt extracts that are preferentially absorbed by
Lactobacillus plantarum
and stimulates its proliferation in milk. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yuanzhi Jiang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- Food Biotechnology Institute of Jiangnan University Yangzhou Jiangsu 225004 China
| | - Yangyang Shi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- Food Biotechnology Institute of Jiangnan University Yangzhou Jiangsu 225004 China
| | - Rui Li
- Food Biotechnology Institute of Jiangnan University Yangzhou Jiangsu 225004 China
| | - Feng Hang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- Food Biotechnology Institute of Jiangnan University Yangzhou Jiangsu 225004 China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- National Engineering Research Center for Functional Food Jiangnan University Wuxi Jiangsu 214122 China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- Food Biotechnology Institute of Jiangnan University Yangzhou Jiangsu 225004 China
- National Engineering Research Center for Functional Food Jiangnan University Wuxi Jiangsu 214122 China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- School of Food Science and Technology Jiangnan University Wuxi Jiangsu 214122 China
- National Engineering Research Center for Functional Food Jiangnan University Wuxi Jiangsu 214122 China
- Beijing Innovation Centre of Food Nutrition and Human Health Beijing Technology & Business University Beijing 100048 China
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12
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Cosson A, Oliveira Correia L, Descamps N, Saint-Eve A, Souchon I. Identification and characterization of the main peptides in pea protein isolates using ultra high-performance liquid chromatography coupled with mass spectrometry and bioinformatics tools. Food Chem 2021; 367:130747. [PMID: 34384979 DOI: 10.1016/j.foodchem.2021.130747] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
Pea protein isolates are a source of high-quality plant proteins. However, from a sensory perspective, they are usually described as having strong beany and bitter notes, which arise from a complex mixture of volatiles, phytochemicals, and peptides. The aim of this study was to identify the main peptides in isolates and examine their correlations with sensory perceptions. Thus, 28 solutions containing different mixtures of pea protein fractions were assessed. Any peptides present were identified and characterized using ultra high-performance liquid chromatography-mass spectrometry. There were a total of 3,005 unique peptides representing various protein families; 1,640 and 275 peptides were correlated with broth and bitter attributes, respectively. In particular, 14 peptides with short sequences (<8 residues) were correlated with bitterness. These results show how key peptides in isolates may cause sensory perceptions.
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Affiliation(s)
- Audrey Cosson
- Univ Paris Saclay, UMR SayFood, AgroParisTech, INRAE, F-78850 Thiverval Grignon, France; Roquette Frères, 10 rue haute loge, F-62136 Lestrem, France
| | - Lydie Oliveira Correia
- Univ Paris Saclay, INRAE, AgroParisTech, Micalis Inst, PAPPSO, F-78350 Jouy En Josas, France
| | | | - Anne Saint-Eve
- Univ Paris Saclay, UMR SayFood, AgroParisTech, INRAE, F-78850 Thiverval Grignon, France
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Insight into the Metabolic Profiles of Pb(II) Removing Microorganisms. Molecules 2021; 26:molecules26134008. [PMID: 34209142 PMCID: PMC8271443 DOI: 10.3390/molecules26134008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/21/2021] [Accepted: 06/26/2021] [Indexed: 11/17/2022] Open
Abstract
The objective of the study was to gather insight into the metabolism of lead-removing microorganisms, coupled with Pb(II) removal, biomass viability and nitrate concentrations for Pb(II) bioremoval using an industrially obtained microbial consortium. The consortium used for study has proven to be highly effective at removing aqueous Pb(II) from solution. Anaerobic batch experiments were conducted with Luria-Bertani broth as rich growth medium over a period of 33 h, comparing a lower concentration of Pb(II) with a higher concentration at two different nutrient concentrations. Metabolite profiling and quantification were conducted with the aid of both liquid chromatography coupled with tandem mass spectroscopy (UPLC-HDMS) in a “non-targeted” fashion and high-performance liquid chromatography (HPLC) in a “targeted” fashion. Four main compounds were identified, and a metabolic study was conducted on each to establish their possible significance for Pb(II) bioremoval. The study investigates the first metabolic profile to date for Pb(II) bioremoval, which in turn can result in a clarified understanding for development on an industrial and microbial level.
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14
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Yu W, Zhang G, Wang W, Jiang C, Cao L. Identification and comparison of proteomic and peptide profiles of mung bean seeds and sprouts. BMC Chem 2020; 14:46. [PMID: 32760914 PMCID: PMC7391586 DOI: 10.1186/s13065-020-00700-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 07/21/2020] [Indexed: 11/10/2022] Open
Abstract
The objectives of this study were to analyze and compare the proteomic and peptide profiles of mung bean (Vigna radiata) seeds and sprouts. Label-free proteomics and peptidomics technologies allowed the identification and relative quantification of proteins and peptides. There were 1918 and 1955 proteins identified in mung bean seeds and sprouts, respectively. The most common biological process of proteins in these two samples was the metabolic process, followed by cellular process and single-organism process. Their dominant molecular functions were catalytic activity, binding, and structural molecule activity, and the majority of them were the cell, cell part, and organelle proteins. These proteins were primarily involved in metabolic pathways, biosynthesis of secondary metabolites, and ribosome. PCA and HCA results indicated the proteomic profile varied significantly during mung bean germination. A total of 260 differential proteins between mung bean seeds and sprouts were selected based on their relative abundance, which were associated with the specific metabolism during seed germination. There were 2364 peptides identified and 76 potential bioactive peptides screened based on the in silico analysis. Both the types and concentration of the peptides in mung bean sprouts were higher than those in seeds, and the content of bioactive peptides in mung bean sprouts was deduced to be higher.
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Affiliation(s)
- Wei Yu
- Heilongjiang Bayi Agricultural University National Coarse Cereals Engineering Research Center, Daqing, 163319 Heilongjiang China
| | - Guifang Zhang
- Heilongjiang Bayi Agricultural University National Coarse Cereals Engineering Research Center, Daqing, 163319 Heilongjiang China
| | - Weihao Wang
- Heilongjiang Bayi Agricultural University National Coarse Cereals Engineering Research Center, Daqing, 163319 Heilongjiang China
| | - Caixia Jiang
- Heilongjiang Bayi Agricultural University National Coarse Cereals Engineering Research Center, Daqing, 163319 Heilongjiang China
| | - Longkui Cao
- Heilongjiang Bayi Agricultural University National Coarse Cereals Engineering Research Center, Daqing, 163319 Heilongjiang China
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15
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Multi-omics Approach Reveals How Yeast Extract Peptides Shape Streptococcus thermophilus Metabolism. Appl Environ Microbiol 2020; 86:AEM.01446-20. [PMID: 32769193 DOI: 10.1128/aem.01446-20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/04/2020] [Indexed: 12/28/2022] Open
Abstract
Peptides present in growth media are essential for nitrogen nutrition and optimal growth of lactic acid bacteria. In addition, according to their amino acid composition, they can also directly or indirectly play regulatory roles and influence global metabolism. This is especially relevant during the propagation phase to produce high cell counts of active lactic acid bacteria used as starters in the dairy industry. In the present work, we aimed at investigating how the respective compositions of two different yeast extracts, with a specific focus on peptide content, influenced Streptococcus thermophilus metabolism during growth under pH-controlled conditions. In addition to free amino acid quantification, we used a multi-omics approach (peptidomics, proteomics, and transcriptomics) to identify peptides initially present in the two culture media and to follow S. thermophilus gene expression and bacterial protein production during growth. The free amino acid and peptide compositions of the two yeast extracts differed qualitatively and quantitatively. Nevertheless, the two yeast extracts sustained similar levels of growth of S. thermophilus and led to equivalent final biomasses. However, transcriptomics and proteomics showed differential gene expression and protein production in several S. thermophilus metabolic pathways, especially amino acid, citrate, urease, purine, and pyrimidine metabolisms. The probable role of the regulator CodY is discussed in this context. Moreover, we observed significant differences in the production of regulators and of a quorum sensing regulatory system. The possible roles of yeast extract peptides on the modulation of the quorum sensing system expression are evaluated.IMPORTANCE Improving the performance and industrial robustness of bacteria used in fermentations and food industry remains a challenge. We showed here that two Streptococcus thermophilus fermentations, performed with the same strain in media that differ only by their yeast extract compositions and, more especially, their peptide contents, led to similar growth kinetics and final biomasses, but several genes and proteins were differentially expressed/produced. In other words, subtle variations in peptide composition of the growth medium can finely tune the metabolism status of the starter. Our work, therefore, suggests that acting on growth medium components and especially on their peptide content, we could modulate bacterial metabolism and produce bacteria differently programmed for further purposes. This might have applications for preparing active starter cultures.
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Impact of Media Heat Treatment on Cell Morphology and Stability of L. acidophilus, L. johnsonii and L. delbrueckii subsp. delbrueckii during Fermentation and Processing. FERMENTATION 2020. [DOI: 10.3390/fermentation6040094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Manufacturers of starter cultures and probiotics aim to provide preparations with the highest possible amount of living cells and assurance of long-term storage stability. Thereby the industrial economy and thus an efficient outcome of the processes is of utmost importance. Earlier research has shown that the sterilization procedure of the microbial culture medium tremendously impacts growth performance of heating product-sensitive Lactobacillus strains. Thus, three different strains, i.e., L. acidophilus NCFM, L. johnsonii La-2801 and L. delbrueckii subsp. delbrueckii La-0704, were investigated for the influence of media heat pretreatment on cell morphology and stability during fermentation and further freeze drying and storage. The data indicate a relationship between the heating time of the culture medium, which is associated with an increase in browning reactions, and the cultural characteristics of the three strains. The resulting characteristic cell sizes of the cultures could be a major reason for the different stability properties during processing and storage that were observed. Besides the obvious relevance of the results for the production of starter cultures and probiotics, the pleomorphic phenomenon described here could also be a subject for other biotechnological processes, where heat-mediated media conversions, and thereby related cellular effects, could be a topic. Future studies have to show if further functional properties are influenced by the cell morphology and which cellular mechanisms lead to the observed pleomorphism.
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A marine photosynthetic microbial cell factory as a platform for spider silk production. Commun Biol 2020; 3:357. [PMID: 32641733 PMCID: PMC7343832 DOI: 10.1038/s42003-020-1099-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 06/22/2020] [Indexed: 12/03/2022] Open
Abstract
Photosynthetic microorganisms such as cyanobacteria, purple bacteria and microalgae have attracted great interest as promising platforms for economical and sustainable production of bioenergy, biochemicals, and biopolymers. Here, we demonstrate heterotrophic production of spider dragline silk proteins, major ampullate spidroins (MaSp), in a marine photosynthetic purple bacterium, Rhodovulum sulfidophilum, under both photoheterotrophic and photoautotrophic growth conditions. Spider silk is a biodegradable and biocompatible material with remarkable mechanical properties. R. sulfidophilum grow by utilizing abundant and renewable nonfood bioresources such as seawater, sunlight, and gaseous CO2 and N2, thus making this photosynthetic microbial cell factory a promising green and sustainable production platform for proteins and biopolymers, including spider silks. Foong et al. demonstrate production of spider dragline silk proteins in Rhodovulum sulfidophilum, a marine photosynthetic purple bacterium. This platform generates promise for the sustainable production of valuable biocompounds in photosynthetic organisms.
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