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Calumby RFDAT, de Lima FO, Valasques Junior GL, Santos JDG, Chaves PFP, Cordeiro LMC, Villarreal CF, Soares MBP, Boffo EF, de Assis SA. Antinociceptive and anti-inflammatory properties of α-D-mannan from the yeast Kluyveromyces marxianus: evidence for a role in interleukin-6 inhibition. Arch Microbiol 2023; 205:379. [PMID: 37950820 DOI: 10.1007/s00203-023-03718-2] [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: 08/31/2023] [Revised: 10/16/2023] [Accepted: 10/21/2023] [Indexed: 11/13/2023]
Abstract
The management of inflammatory states typically involves non-steroidal anti-inflammatory drugs (NSAIDs) and opiates. Understanding the mechanisms underlying the processing of nociceptive information from potential alternatives such as some polysaccharides may enable new and meaningful therapeutic approaches. In this study, α-D-mannan isolated from the Kluyveromyces marxianus cell wall produced antinociceptive effects in models of inflammatory pain (formalin and complete Freund's adjuvant tests). Furthermore, α-D-mannan reduced paw edema and interleukin-6 (IL-6) production after carrageenan-induced inflammation. The polysaccharide α-D-mannan was characterized by gas chromatography-mass spectrometry, methylation analysis, and spectroscopic techniques. Moreover, the Doehlert experimental design was applied to find the optimal conditions for biomass production, with the best conditions being 10.8 g/L and 117 h for the glucose concentration and the fermentation time, respectively. These results indicate that α-D-mannan from K. marxianus exerts anti-inflammatory and antinociceptive effects in mice, possibly via a mechanism dependent on the inhibition of IL-6 production.
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Affiliation(s)
- Renata Freitas de A T Calumby
- Health Department, State University of Feira de Santana, Av. Transnordestina s/n, Feira de Santana, Bahia, 44036-900, Brazil
| | - Flávia Oliveira de Lima
- Health Department, State University of Feira de Santana, Av. Transnordestina s/n, Feira de Santana, Bahia, 44036-900, Brazil
| | - Gildomar Lima Valasques Junior
- Health Department, State University of Feira de Santana, Av. Transnordestina s/n, Feira de Santana, Bahia, 44036-900, Brazil
| | | | - Pedro Felipe Pereira Chaves
- Biochemistry and Molecular Biology Department, Federal University of Paraná, CP 19.046, Curitiba, PR, CEP 81531-980, Brazil
| | - Lucimara Mach Côrtes Cordeiro
- Biochemistry and Molecular Biology Department, Federal University of Paraná, CP 19.046, Curitiba, PR, CEP 81531-980, Brazil
| | - Cristiane Flora Villarreal
- Gonçalo Moniz Research Center (CPqGM), Fundação Oswaldo Cruz, Rua Waldemar Falcão 121, Salvador, BA, 40296-710, Brazil
| | - Milena Botelho Pereira Soares
- Gonçalo Moniz Research Center (CPqGM), Fundação Oswaldo Cruz, Rua Waldemar Falcão 121, Salvador, BA, 40296-710, Brazil
| | - Elisangela Fabiana Boffo
- Chemistry Institute, Federal University of Bahia, Barão de Jeremoabo s/n, Salvador, Bahia, 40170-290, Brazil
| | - Sandra Aparecida de Assis
- Health Department, State University of Feira de Santana, Av. Transnordestina s/n, Feira de Santana, Bahia, 44036-900, Brazil.
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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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Li B, Liu Y, Wang L, Hong J, Chen Y, Ying H. RNA accumulation in Candida tropicalis based on cofactor engineering. FEMS Yeast Res 2019; 19:5426822. [PMID: 30942847 DOI: 10.1093/femsyr/foz028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 04/02/2019] [Indexed: 11/12/2022] Open
Abstract
Redox cofactors play an important role in biosynthetic and catabolic reactions and the transfer of energy for the cell. Therefore, studying the relationship between cofactor perturbation and metabolism is a useful approach to improve the yield of target products. To study RNA accumulation and metabolism when intracellular cofactor balance was impaired, the water-forming NADH oxidase (NoxE) from Lactococcus lactis and membrane-bound transhydrogenase (PntAB) from Escherichia coli were expressed in Candidatropicalis no. 121, respectively. Expression of noxE significantly decreased the intracellular NADH/NAD+ ratio, but the NADPH/NADP+ ratio did not differ significantly. PntAB increased the intracellular NADH pool, while the NADPH/NADP+ ratio decreased. The perturbation of the cofactors caused a large redistribution of metabolic fluxes. The biomass and RNA content decreased by 11.0% and 10.6% in pAUR-noxE strain, respectively, while the RNA content increased by 5.5% and the biomass showed no signification difference in pAUR-pntAB strain. Expression of noxE and pntAB led to decreases and increases in the ATP concentration and yield of RNA, respectively, which also indicated that ATP plays an important role in the RNA biosynthesis.
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Affiliation(s)
- Bingbing Li
- School of Life Science and Engineering, Henan University of Urban Construction, Pingdingshan, 367036, Henan, P.R. China.,Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China.,Henan Health Food Engineering and Technology Research Center, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China
| | - Ying Liu
- School of Life Science and Engineering, Henan University of Urban Construction, Pingdingshan, 367036, Henan, P.R. China.,Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China.,Henan Health Food Engineering and Technology Research Center, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China
| | - Lianzhe Wang
- School of Life Science and Engineering, Henan University of Urban Construction, Pingdingshan, 367036, Henan, P.R. China.,Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China.,Henan Health Food Engineering and Technology Research Center, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China
| | - Jun Hong
- School of Life Science and Engineering, Henan University of Urban Construction, Pingdingshan, 367036, Henan, P.R. China.,Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China.,Henan Health Food Engineering and Technology Research Center, Henan University of Urban Construction, Pingdingshan, 467036, Henan, P.R. China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Life Science and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 210009, P.R. China.,National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, Nanjing, 211009, China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Life Science and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 210009, P.R. China.,National Engineering Technique Research Center for Biotechnology, Nanjing Tech University, Nanjing, 211009, China
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Álvarez-Cao ME, Cerdán ME, González-Siso MI, Becerra M. Bioconversion of Beet Molasses to Alpha-Galactosidase and Ethanol. Front Microbiol 2019; 10:405. [PMID: 30899250 PMCID: PMC6416216 DOI: 10.3389/fmicb.2019.00405] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 02/15/2019] [Indexed: 12/15/2022] Open
Abstract
Molasses are sub-products of the sugar industry, rich in sucrose and containing other sugars like raffinose, glucose, and fructose. Alpha-galactosidases (EC. 3.2.1.22) catalyze the hydrolysis of alpha-(1,6) bonds of galactose residues in galacto-oligosaccharides (melibiose, raffinose, and stachyose) and complex galactomannans. Alpha-galactosidases have important applications, mainly in the food industry but also in the pharmaceutical and bioenergy sectors. However, the cost of the enzyme limits the profitability of most of these applications. The use of cheap sub-products, such as molasses, as substrates for production of alpha-galactosidases, reduces the cost of the enzymes and contributes to the circular economy. Alpha-galactosidase is a specially indicated bioproduct since, at the same time, it allows to use the raffinose present in molasses. This work describes the development of a two-step system for the valuation of beet molasses, based on their use as substrate for alpha-galactosidase and bioethanol production by Saccharomyces cerevisiae. Since this yeast secretes high amounts of invertase, to avoid congest the secretory route and to facilitate alpha-galactosidase purification from the culture medium, a mutant in the SUC2 gene (encoding invertase) was constructed. After a statistical optimization of culture conditions, this mutant yielded a very high rate of molasses bioconversion to alpha-galactosidase. In the second step, the SUC2 wild type yeast strain fermented the remaining sucrose to ethanol. A procedure to recycle the yeast biomass, by using it as nitrogen source to supplement molasses, was also developed.
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Affiliation(s)
- María-Efigenia Álvarez-Cao
- Grupo EXPRELA, Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - María-Esperanza Cerdán
- Grupo EXPRELA, Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - María-Isabel González-Siso
- Grupo EXPRELA, Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - Manuel Becerra
- Grupo EXPRELA, Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
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Tabanelli G, Verardo V, Pasini F, Cavina P, Lanciotti R, Caboni M, Gardini F, Montanari C. Survival of the functional yeast Kluyveromyces marxianus B0399 in fermented milk with added sorbic acid. J Dairy Sci 2016; 99:120-9. [DOI: 10.3168/jds.2015-10084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/17/2015] [Indexed: 11/19/2022]
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Ali TH, Ali NH, Haroun BM, Tantawy AE. Purification and partial characterization of NAD aminohydrolase from Aspergillus oryzae NRRL447. World J Microbiol Biotechnol 2013; 30:819-25. [PMID: 24158390 DOI: 10.1007/s11274-013-1483-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 09/04/2013] [Indexed: 10/26/2022]
Abstract
Aspergillus oryzae aminohydrolase free acid phosphodiesterase catalyzes nicotinamide adenine dinucleotide to deamino-NAD and ammonia. The enzyme was purified to homogeneity by a combination of acetone precipitation, anion exchange chromatography and gel filtration chromatography. The enzyme was purified 230.5 fold. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the purified enzyme showed a single protein band of MW 94 kDa. The enzyme displayed maximum activity at pH 5 and 40 °C with NAD as substrate. The enzyme activity appeared to be stable up to 40 °C. The enzyme activity was enhanced slightly by addition of Na⁺ and K⁺, whereas inhibited strongly by addition of Ag⁺, Mn²⁺, Hg²⁺ and Cu²⁺ to the reaction mixtures. The enzyme hydrolyzes several substrates, suggesting a probable non-specific nature. The enzyme catalyzes the hydrolytic cleavage of amino group of NAD, adenosine, AMP, CMP, GMP, adenosine, cytidine and cytosine to the corresponding nucleotides, nucleosides or bases and ammonia. The substrate concentration-activity relationship is the hyperbolic type and the apparent Km and Kcat for the tested substrates were calculated.
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Affiliation(s)
- Thanaa H Ali
- Department of Microbial Chemistry, National Research Centre, Dokki, Cairo, Egypt,
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Vieira E, Brandão T, Ferreira IMPLVO. Evaluation of Brewer's spent yeast to produce flavor enhancer nucleotides: influence of serial repitching. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:8724-8729. [PMID: 24004163 DOI: 10.1021/jf4021619] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The present work evaluates the influence of serial yeast repitching on nucleotide composition of brewer's spent yeast extracts produced without addition of exogenous enzymes. Two procedures for disrupting cell walls were compared, and the conditions for low-cost and efficient RNA hydrolysis were selected. A HILIC methodology was validated for the quantification of nucleotides and nucleosides in yeast extracts. Thirty-seven samples of brewer's spent yeast ( Saccharomyces pastorianus ) organized according to the number of serial repitchings were analyzed. Nucleotides accounted for 71.1-88.2% of the RNA products; 2'AMP was the most abundant (ranging between 0.08 and 2.89 g/100 g dry yeast). 5'GMP content ranged between 0.082 and 0.907 g/100 g dry yeast. The sum of 5'GMP, 5'IMP, and 5'AMP represented between 25 and 32% of total nucleotides. This works highlights for the first time that although serial repitching influences the content of monophosphate nucleotides and nucleosides, the profiles of these RNA hydrolysis products are not affected.
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Affiliation(s)
- Elsa Vieira
- REQUIMTE - Departamento de Ciências Quı́micas, Laboratório de Bromatologia e Hidrologia, Faculdade de Farmácia, Universidade do Porto , Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
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DNA as an adhesin: Bacillus cereus requires extracellular DNA to form biofilms. Appl Environ Microbiol 2009; 75:2861-8. [PMID: 19251901 DOI: 10.1128/aem.01317-08] [Citation(s) in RCA: 204] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The soil saprophyte Bacillus cereus forms biofilms at solid-liquid interfaces. The composition of the extracellular polymeric matrix is not known, but biofilms of other bacteria are encased in polysaccharides, protein, and also extracellular DNA (eDNA). A Tn917 screen for strains impaired in biofilm formation at a solid-liquid interface yielded several mutants. Three mutants deficient in the purine biosynthesis genes purA, purC, and purL were biofilm impaired, but they grew planktonically like the wild type in Luria-Bertani broth. Biofilm populations had higher purA, purC, and purL transcript ratios than planktonic cultures, as measured by real-time PCR. Laser scanning confocal microscopy (LSCM) of BacLight-stained samples indicated that there were nucleic acids in the cell-associated matrix. This eDNA could be mobilized off the biofilm into an agarose gel matrix through electrophoresis, and it was a substrate for DNase. Glass surfaces exposed to exponentially growing populations acquired a DNA-containing conditioning film, as indicated by LSCM. Planktonic exponential-phase cells released DNA into an agarose gel matrix through electrophoresis, while stationary-phase populations did not do this. DNase treatment of planktonic exponential-phase populations rendered cells more susceptible than control populations to the DNA-interacting antibiotic actinomycin D. Exponential-phase purA cells did not contain detectable eDNA, nor did they convey a DNA-containing conditioning film to the glass surface. These results indicate that exponential-phase cells of B. cereus ATCC 14579 are decorated with eDNA and that biofilm formation requires DNA as part of the extracellular polymeric matrix.
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Fonseca GG, Heinzle E, Wittmann C, Gombert AK. The yeast Kluyveromyces marxianus and its biotechnological potential. Appl Microbiol Biotechnol 2008; 79:339-54. [PMID: 18427804 DOI: 10.1007/s00253-008-1458-6] [Citation(s) in RCA: 307] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 03/12/2008] [Accepted: 03/13/2008] [Indexed: 11/26/2022]
Abstract
Strains belonging to the yeast species Kluyveromyces marxianus have been isolated from a great variety of habitats, which results in a high metabolic diversity and a substantial degree of intraspecific polymorphism. As a consequence, several different biotechnological applications have been investigated with this yeast: production of enzymes (beta-galactosidase, beta-glucosidase, inulinase, and polygalacturonases, among others), of single-cell protein, of aroma compounds, and of ethanol (including high-temperature and simultaneous saccharification-fermentation processes); reduction of lactose content in food products; production of bioingredients from cheese-whey; bioremediation; as an anticholesterolemic agent; and as a host for heterologous protein production. Compared to its congener and model organism, Kluyveromyces lactis, the accumulated knowledge on K. marxianus is much smaller and spread over a number of different strains. Although there is no publicly available genome sequence for this species, 20% of the CBS 712 strain genome was randomly sequenced (Llorente et al. in FEBS Lett 487:71-75, 2000). In spite of these facts, K. marxianus can envisage a great biotechnological future because of some of its qualities, such as a broad substrate spectrum, thermotolerance, high growth rates, and less tendency to ferment when exposed to sugar excess, when compared to K. lactis. To increase our knowledge on the biology of this species and to enable the potential applications to be converted into industrial practice, a more systematic approach, including the careful choice of (a) reference strain(s) by the scientific community, would certainly be of great value.
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Lee JS, Hyun KW, Jeong SC, Kim JH, Choi YJ, Miguez CB. Production of ribonucleotides by autolysis of Pichia anomala mutant and some physiological activities. Can J Microbiol 2004; 50:489-92. [PMID: 15381973 DOI: 10.1139/w04-032] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Various mutants of Pichia anomala were isolated by ethyl methanesulfonate (EMS) treatment and UV irradiation through cycloheximide resistance and KCl sensitivity. The selected mutant HA-2 accumulated a higher content of RNA and grew faster than the wild-type strain in yeast extract-malt (YM) broth. Autolysis of the HA-2 mutant at 60 degrees C and pH 7.0 for 6 h was the best condition to obtain maximum yields of 5'-ribonucleotides, inosinic monophosphate (IMP) (6.2 mg/g biomass) and guanylic monophosphate (GMP) (35.5 mg/g biomass). The yield of adenylic monophosphate (AMP) (7.8 mg/g biomass) was optimal at 60 degrees C at pH 6.5 for 6 h. The inhibitory activity of the angiotensin-converting enzyme and the nitrite-scavenging activity for autolysates of the HA-2 mutant were about 13.0% and 47.0% higher than those of native strain, respectively.
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Affiliation(s)
- Jong-Soo Lee
- Department of Genetic Engineering and Bio-Medicinal Resources Research Center, Paichai University, Daejon, Korea
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Jae-Ho K, Byung-Hoon L, Jong-Soo L. Production of ribonucleotides by autolysis of Hansenula anomala grown on Korean ginseng steaming effluent. J Biosci Bioeng 2002; 93:318-21. [PMID: 16233207 DOI: 10.1016/s1389-1723(02)80035-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2001] [Accepted: 12/18/2001] [Indexed: 11/16/2022]
Abstract
Hansenula anomala KCCM 11473, which grew well in Korean ginseng steaming effluent, was selected for the production of 5'-ribonucleotides. This strain had high RNA content. Optimal autolysis conditions were established to produce 5'-ribonucleotides (13.9 approximately 28.5 mg/g of biomass) at 55 degrees C and pH 5.0 for 24 h. 5'-Phosphodiesterase and adenyl deaminase were not effective in increasing the yield of 5'-ribonucleotides, but the yield of IMP increased significantly only after the addition of 1.0% adenyl deaminase.
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Affiliation(s)
- Kim Jae-Ho
- Department of Genetic Engineering and Bio-Medicinal Resources Research Center, Paichai University, Taejon 302-735, Korea
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