126
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Lima CA, Júnior ACF, Filho JLL, Converti A, Marques DAV, Carneiro-da-Cunha MG, Porto ALF. Two-phase partitioning and partial characterization of a collagenase from Penicillium aurantiogriseum URM4622: Application to collagen hydrolysis. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.03.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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127
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Castillo Martinez FA, Balciunas EM, Salgado JM, Domínguez González JM, Converti A, Oliveira RPDS. Lactic acid properties, applications and production: A review. Trends Food Sci Technol 2013. [DOI: 10.1016/j.tifs.2012.11.007] [Citation(s) in RCA: 401] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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128
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Martinez FAC, Balciunas EM, Converti A, Cotter PD, de Souza Oliveira RP. Bacteriocin production by Bifidobacterium spp. A review. Biotechnol Adv 2013; 31:482-8. [PMID: 23384878 DOI: 10.1016/j.biotechadv.2013.01.010] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/24/2013] [Accepted: 01/24/2013] [Indexed: 12/20/2022]
Abstract
Bacteriocins are ribosomally-synthesized antibacterial peptides. These compounds are produced by a broad variety of different bacteria belonging mainly to the genus Bifidobacterium, to which health promoting properties have frequently been attributed. However, despite the fact that the identification of Bifidobacterium-associated bacteriocins was first reported in 1980 and that they exhibit antimicrobial activity against pathogenic microorganisms such as Listeria monocytogenes, Clostridium perfringens, and Escherichia coli, relatively little information is still available about the antimicrobial compounds produced by strains of this genus. More detailed understanding of the action mechanisms of these antimicrobials could allow us to determine the extent to which their production contributes to the probiotic properties of specific bifidobacteria strains and, potentially, be of crucial significance for ultimate preservation of functional foods or pharmaceutical applications. Here we review what is already known about their structure, classification, mode of action, functionality, immunity, production and purification.
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129
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Matsudo MC, Bezerra RP, Sato S, Converti A, de Carvalho JCM. Photosynthetic efficiency and rate of CO2 assimilation by Arthrospira (Spirulina) platensis continuously cultivated in a tubular photobioreactor. Biotechnol J 2012; 7:1412-7. [PMID: 22933335 DOI: 10.1002/biot.201200177] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 08/06/2012] [Accepted: 08/24/2012] [Indexed: 11/07/2022]
Abstract
Similar to other photosynthetic microorganisms, the cyanobacterium Arthrospira platensis can be used to produce pigments, single cell proteins, fatty acids (which can be used for bioenergy), food and feed supplements, and biofixation of CO(2) . Cultivation in a specifically designed tubular photobioreactor is suitable for photosynthetic biomass production, because the cultivation area can be reduced by distributing the microbial cells vertically, thus avoiding loss of ammonia and CO(2) . The aim of this study was to investigate the influence of light intensity and dilution rate on the photosynthetic efficiency and CO(2) assimilation efficiency of A. platensis cultured in a tubular photobioreactor in a continuous process. Urea was used as a nitrogen source and CO(2) as carbon source and for pH control. Steady-state conditions were achieved in most of the runs, indicating that continuous cultivation of this cyanobacterium in a tubular photobioreactor could be an interesting alternative for the large-scale fixation of CO(2) to mitigate the greenhouse effect while producing high protein content biomass.
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130
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Latoui M, Aliakbarian B, Casazza AA, Seffen M, Converti A, Perego P. Extraction of phenolic compounds from Vitex agnus-castus L. FOOD AND BIOPRODUCTS PROCESSING 2012. [DOI: 10.1016/j.fbp.2012.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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131
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do Espírito Santo A, Perego P, Converti A, Oliveira M. Influence of milk type and addition of passion fruit peel powder on fermentation kinetics, texture profile and bacterial viability in probiotic yoghurts. Lebensm Wiss Technol 2012. [DOI: 10.1016/j.lwt.2012.01.038] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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132
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de Souza Oliveira RP, Perego P, de Oliveira MN, Converti A. Effect of inulin on the growth and metabolism of a probiotic strain of Lactobacillus rhamnosus in co-culture with Streptococcus thermophilus. Lebensm Wiss Technol 2012. [DOI: 10.1016/j.lwt.2012.01.031] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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133
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Cukier de Aquino V, Converti A, Perego P, Caetano da Silva Lannes S. Leavening Bread Dough. CURRENT NUTRITION & FOOD SCIENCE 2012. [DOI: 10.2174/157340112800840835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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134
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Rodrigues MS, Ferreira LS, de Carvalho JCM, Lodi A, Finocchio E, Converti A. Metal biosorption onto dry biomass of Arthrospira (Spirulina) platensis and Chlorella vulgaris: multi-metal systems. JOURNAL OF HAZARDOUS MATERIALS 2012; 217-218:246-255. [PMID: 22480702 DOI: 10.1016/j.jhazmat.2012.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 03/01/2012] [Accepted: 03/08/2012] [Indexed: 05/31/2023]
Abstract
Binary and ternary systems of Ni(2+), Zn(2+), and Pb(2+) were investigated at initial metal concentrations of 0.5, 1.0 and 2.0mM as competitive adsorbates using Arthrospira platensis and Chlorella vulgaris as biosorbents. The experimental results were evaluated in terms of equilibrium sorption capacity and metal removal efficiency and fitted to the multi-component Langmuir and Freundlich isotherms. The pseudo second order model of Ho and McKay described well the adsorption kinetics, and the FT-IR spectroscopy confirmed metal binding to both biomasses. Ni(2+) and Zn(2+) interference on Pb(2+) sorption was lower than the contrary, likely due to biosorbent preference to Pb. In general, the higher the total initial metal concentration, the lower the adsorption capacity. The results of this study demonstrated that dry biomass of C. vulgaris behaved as better biosorbent than A. platensis and suggest its use as an effective alternative sorbent for metal removal from wastewater.
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135
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Oliveira RPDS, Basso LC, Junior AP, Penna TCV, Del Borghi M, Converti A. Response of Saccharomyces cerevisiae to cadmium and nickel stress: the use of the sugar cane vinasse as a potential mitigator. Biol Trace Elem Res 2012; 145:71-80. [PMID: 21809054 DOI: 10.1007/s12011-011-9156-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
Abstract
Most of the metals released from industrial activity, among them are cadmium (Cd) and nickel (Ni), inhibit the productivity of cultures and affect microbial metabolism. In this context, the aim of this work was to investigate the capacity of sugar cane vinasse to mitigate the adverse effects of Cd and Ni on cell growth, viability, budding rate and trehalose content of Saccharomyces cerevisiae, likely because of adsorption and chelating action. For this purpose, the yeast was grown batch-wise in YED medium supplemented with selected amounts of vinasse and Cd or Ni. The negative effects of Cd and Ni on S. cerevisiae growth and the mitigating one of sugar cane vinasse were quantified by an exponential model. Without vinasse, the addition of increasing levels of Cd and Ni reduced the specific growth rate, whereas in its presence no reduction was observed. Consistently with the well-proved toxicity of both metals, cell viability and budding rate progressively decreased with increasing their concentration, but in the presence of vinasse the situation was remarkably improved. The trehalose content of S. cerevisiae cells followed the same qualitative behavior as cell viability, even though the negative effect of both metals on this parameter was stronger. These results demonstrate the ability of sugar cane vinasse to mitigate the toxic effects of Cd and Ni.
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136
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Ben Hamissa AM, Seffen M, Aliakbarian B, Casazza AA, Perego P, Converti A. Phenolics extraction from Agave americana (L.) leaves using high-temperature, high-pressure reactor. FOOD AND BIOPRODUCTS PROCESSING 2012. [DOI: 10.1016/j.fbp.2010.11.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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137
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Lima CA, Filho JLL, Neto BB, Converti A, Carneiro da Cunha MG, Porto ALF. Production and characterization of a collagenolytic serine proteinase by Penicillium aurantiogriseum URM 4622: A factorial study. BIOTECHNOL BIOPROC E 2011. [DOI: 10.1007/s12257-010-0247-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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138
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Vieira DCM, Matsudo MC, Sato S, Converti A, de Carvalho JCM. Simultaneous use of urea and potassium nitrate for Arthrospira (Spirulina) platensis cultivation. Biotechnol J 2011; 7:649-55. [DOI: 10.1002/biot.201100203] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 08/24/2011] [Accepted: 08/26/2011] [Indexed: 11/09/2022]
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139
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Oliveira RPDS, Perego P, Oliveira MND, Converti A. Effect of inulin as prebiotic and synbiotic interactions between probiotics to improve fermented milk firmness. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.06.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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140
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Ferreira LS, Rodrigues MS, Converti A, Sato S, Carvalho JC. Kinetic and growth parameters of Arthrospira (Spirulina) platensis cultivated in tubular photobioreactor under different cell circulation systems. Biotechnol Bioeng 2011; 109:444-50. [DOI: 10.1002/bit.23315] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 08/05/2011] [Accepted: 08/18/2011] [Indexed: 11/09/2022]
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141
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Santos VC, Hasmann FA, Converti A, Pessoa A. Liquid–liquid extraction by mixed micellar systems: A new approach for clavulanic acid recovery from fermented broth. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.05.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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142
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Rodrigues MS, Ferreira LS, Converti A, Sato S, de Carvalho JCM. Influence of ammonium sulphate feeding time on fed-batch Arthrospira (Spirulina) platensis cultivation and biomass composition with and without pH control. BIORESOURCE TECHNOLOGY 2011; 102:6587-6592. [PMID: 21507628 DOI: 10.1016/j.biortech.2011.03.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 03/24/2011] [Accepted: 03/26/2011] [Indexed: 05/30/2023]
Abstract
Previous work demonstrated that a mixture of NH(4)Cl and KNO(3) as nitrogen source was beneficial to fed-batch Arthrospira (Spirulina) platensis cultivation, in terms of either lower costs or higher cell concentration. On the basis of those results, this study focused on the use of a cheaper nitrogen source mixture, namely (NH(4))(2)SO(4) plus NaNO(3), varying the ammonium feeding time (T=7-15 days), either controlling the pH by CO(2) addition or not. A. platensis was cultivated in mini-tanks at 30°C, 156 μmol photons m(-2) s(-1), and starting cell concentration of 400 mg L(-1), on a modified Schlösser medium. T=13 days under pH control were selected as optimum conditions, ensuring the best results in terms of biomass production (maximum cell concentration of 2911 mg L(-1), cell productivity of 179 mg L(-1)d(-1) and specific growth rate of 0.77 d(-1)) and satisfactory protein and lipid contents (around 30% each).
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143
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Marques DAV, Cunha MNC, Araújo JM, Lima-Filho JL, Converti A, Pessoa A, Porto ALF. Optimization of clavulanic acid production by Streptomyces daufpe 3060 by response surface methodology. Braz J Microbiol 2011; 42:658-67. [PMID: 24031677 PMCID: PMC3769858 DOI: 10.1590/s1517-838220110002000030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Accepted: 01/13/2011] [Indexed: 11/22/2022] Open
Abstract
Clavulanic acid is a ß-lactam antibiotic which has a potent ß-lactamase inhibiting activity. In order to optimize its production by the new isolate Streptomyces DAUFPE 3060, the influence of two independent variables, temperature and soybean flour concentration, on clavulanic acid and biomass concentrations was investigated in 250 mL-Erlenmeyers according to a 22 central composite design. To this purpose, temperature and soybean flour (SF) concentration were varied in the ranges 26–34°C and 10–50 g/L, respectively, and the results evaluated utilizing the Response Surface Methodology. The experimental maximum production of clavulanic acid (629 mg/L) was obtained at 32°C and 40 g/L SF after 48 h, while the maximum biomass concentration (3.9 g/L) at 30°C and 50 g/L soybean flour, respectively. These values are satisfactorily close to those (640 mg/L and 3.75 g/L, respectively) predicted by the model, thereby demonstrating the validity of the mathematical approach adopted in this study.
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Marques DAV, Cunha MNC, Araújo JM, Lima-Filho JL, Converti A, Pessoa-Jr A, Porto ALF. Optimization of clavulanic acid production by Streptomyces daufpe 3060 by response surface methodology. Braz J Microbiol 2011. [DOI: 10.1590/s1517-83822011000200030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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145
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Matsudo MC, Bezerra RP, Converti A, Sato S, Carvalho JCM. CO2 from alcoholic fermentation for continuous cultivation of Arthrospira (Spirulina) platensis in tubular photobioreactor using urea as nitrogen source. Biotechnol Prog 2011; 27:650-6. [DOI: 10.1002/btpr.581] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 01/27/2011] [Indexed: 11/11/2022]
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146
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Palazzi E, Molinari F, Fabiano B, Pessoa Jr A, Converti A. Kinetic analysis of batch ethanol acetylation in isothermal non-stationary multiphase systems by lyophilized mycelium of Aspergillus oryzae. Braz J Microbiol 2011; 42:388-93. [PMID: 24031645 PMCID: PMC3768936 DOI: 10.1590/s1517-83822011000100048] [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: 03/16/2010] [Accepted: 06/21/2010] [Indexed: 11/25/2022] Open
Abstract
A relatively complex network of reactions has been investigated, using as a network model the isothermal batch esterification of acetic acid with ethanol in n-heptane catalyzed by lyophilized mycelium of Aspergillus oryzae. The kinetic analysis was firstly carried out on the whole system, without any simplification, by means of the well-known integral method. Owing to the poor results obtained by this way, we developed an alternative approach, combining initial rates and integral analysis and reducing the number of empirical parameters to be determined by the use of equilibrium data. All the values of the parameters calculated according to this “composite” approach to kinetic analysis well correlate with experimental data.
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147
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De Souza Oliveira RP, Perego P, De Oliveira MN, Converti A. Effect of inulin as a prebiotic to improve growth and counts of a probiotic cocktail in fermented skim milk. Lebensm Wiss Technol 2011. [DOI: 10.1016/j.lwt.2010.08.024] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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148
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Bezerra RP, Montoya EYO, Sato S, Perego P, de Carvalho JCM, Converti A. Effects of light intensity and dilution rate on the semicontinuous cultivation of Arthrospira (Spirulina) platensis. A kinetic Monod-type approach. BIORESOURCE TECHNOLOGY 2011; 102:3215-3219. [PMID: 21111613 DOI: 10.1016/j.biortech.2010.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 10/31/2010] [Accepted: 11/01/2010] [Indexed: 05/30/2023]
Abstract
Semicontinuous cultures were carried out at different dilution rates (D) and light intensities (I) to determine the maximum productivity of Arthrospira platensis cultivated in helicoidal photobioreactor up to the achievement of pseudo-steady-state conditions. At I=108 μmol photons m(-2) s(-1), the semicontinuous regime ensured the highest values of maximum cell concentration (X(m)=5772±113 mg L(-1)) and productivity (P(XS)=1319±25 mg L(-1) d(-1)) at the lowest (D=0.1 day(-1)) and the highest (D=0.3 day(-1)) dilution rates, respectively. A kinetic model derived from that of Monod was proposed to determine the relationship between the product of light intensity to dilution rate (ID) and the cell productivity, which were shown to exert a combined influence on this parameter. This result put into evidence that pseudo-steady-state conditions could be modified according to circumstances, conveniently varying one or other of the two independent variables.
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149
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De Souza Oliveira RP, Rodrigues Florence AC, Perego P, De Oliveira MN, Converti A. Use of lactulose as prebiotic and its influence on the growth, acidification profile and viable counts of different probiotics in fermented skim milk. Int J Food Microbiol 2011; 145:22-7. [DOI: 10.1016/j.ijfoodmicro.2010.11.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 10/08/2010] [Accepted: 11/07/2010] [Indexed: 11/25/2022]
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150
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Viana Marques DA, Pessoa-Júnior A, Lima-Filho JL, Converti A, Perego P, Porto ALF. Extractive fermentation of clavulanic acid by Streptomyces DAUFPE 3060 using aqueous two-phase system. Biotechnol Prog 2010; 27:95-103. [DOI: 10.1002/btpr.526] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 09/08/2010] [Indexed: 11/08/2022]
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