101
|
da Silva MF, Casazza AA, Ferrari PF, Perego P, Bezerra RP, Converti A, Porto ALF. A new bioenergetic and thermodynamic approach to batch photoautotrophic growth of Arthrospira (Spirulina) platensis in different photobioreactors and under different light conditions. BIORESOURCE TECHNOLOGY 2016; 207:220-228. [PMID: 26890797 DOI: 10.1016/j.biortech.2016.01.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 01/29/2016] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
Photobioreactor configuration, mode of operation and light intensity are known to strongly impact on cyanobacteria growth. To shed light on these issues, kinetic, bioenergetic and thermodynamic parameters of batch Arthrospira platensis cultures were estimated along the time at photosynthetic photon flux density (PPFD) of 70μmolm(-2)s(-1) in different photobioreactors with different surface/volume ratio (S/V), namely open pond (0.25cm(-1)), shaken flask (0.48cm(-1)), horizontal photobioreactor (HoP) (1.94cm(-1)) and helicoidal photobioreactor (HeP) (3.88cm(-1)). Maximum biomass concentration and productivity remarkably increased with S/V up to 1.94cm(-1). HoP was shown to be the best-performing system throughout the whole runs, while HeP behaved better only at the start. Runs carried out in HoP increasing PPFD from 40 to 100μmolm(-2)s(-1) revealed a progressive enhancement of bioenergetics and thermodynamics likely because of favorable light distribution. HoP appeared to be a promising configuration to perform high-yield indoor cyanobacterial cultures.
Collapse
|
102
|
Coelho Sampaio F, da Conceição Saraiva TL, Dumont de Lima e Silva G, Teles de Faria J, Grijó Pitangui C, Aliakbarian B, Perego P, Converti A. Batch growth of Kluyveromyces lactis cells from deproteinized whey: Response surface methodology versus Artificial neural network—Genetic algorithm approach. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.01.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
103
|
Frumento D, Aliakbarian B, Casazza AA, Converti A, Al Arni S, da Silva MF. Chlorella vulgarisas a lipid source: Cultivation on air and seawater-simulating medium in a helicoidal photobioreactor. Biotechnol Prog 2016; 32:279-84. [DOI: 10.1002/btpr.2218] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 09/03/2015] [Indexed: 11/06/2022]
|
104
|
Lopes AM, Oliveira-Nascimento LD, Ribeiro A, Tairum CA, Breyer CA, Oliveira MAD, Monteiro G, Souza-Motta CMD, Magalhães PDO, Avendaño JGF, Cavaco-Paulo AM, Mazzola PG, Rangel-Yagui CDO, Sette LD, Converti A, Pessoa A. Therapeuticl-asparaginase: upstream, downstream and beyond. Crit Rev Biotechnol 2015; 37:82-99. [DOI: 10.3109/07388551.2015.1120705] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
105
|
Bove D, Merello S, Frumento D, Arni SA, Aliakbarian B, Converti A. A Critical Review of Biological Processes and Technologies for Landfill Leachate Treatment. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201500257] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
106
|
Knirsch MC, Dell’Anno F, Chicoma D, Stephano MA, Bou-Chacra NA, Palombo D, Converti A, Polakiewicz B. Preparation and characterization of a microencapsulated polyethylene glycol cross-linked polyhemoglobin. Bioprocess Biosyst Eng 2015; 38:2263-9. [DOI: 10.1007/s00449-015-1463-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/19/2015] [Indexed: 10/23/2022]
|
107
|
Balciunas EM, Al Arni S, Converti A, Leblanc JG, Oliveira RPDS. Production of bacteriocin-like inhibitory substances (BLIS) byBifidobacterium lactisusing whey as a substrate. INT J DAIRY TECHNOL 2015. [DOI: 10.1111/1471-0307.12247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
108
|
Martínez EA, Canettieri EV, Bispo JAC, Giulietti M, de Almeida e Silva JB, Converti A. Strategies for xylitol purification and crystallization: A Review. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1009115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
109
|
da Silva Sabo S, Converti A, Todorov SD, Domínguez JM, de Souza Oliveira RP. Effect of inulin on growth and bacteriocin production byLactobacillus plantarumin stationary and shaken cultures. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12711] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
110
|
Viana Marques DA, Santos-Ebinuma VDC, de Oliveira PMS, Lima GMDS, Araújo JM, Lima-Filho JL, Converti A, Pessoa-Júnior A, Porto ALF. Screening of wild type Streptomyces isolates able to overproduce clavulanic acid. Braz J Microbiol 2014; 45:919-28. [PMID: 25477926 PMCID: PMC4204977 DOI: 10.1590/s1517-83822014000300022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 03/14/2014] [Indexed: 01/25/2023] Open
Abstract
The selection of new microorganisms able to produce antimicrobial compounds is hoped for to reduce their production costs and the side effects caused by synthetic drugs. Clavulanic acid is a β-lactam antibiotic produced by submerged culture, which is widely used in medicine as a powerful inhibitor of β-lactamases, enzymes produced by bacteria resistant to antibiotics such penicillin and cephalosporin. The purpose of this work was to select the best clavulanic acid producer among strains of Streptomyces belonging to the Microorganism Collection of the Department of Antibiotics of the Federal University of Pernambuco (DAUFPE). Initially, the strains were studied for their capacity to inhibit the action of β-lactamases produced by Klebsiella aerogenes ATCC 15380. From these results, five strains were selected to investigate the batch kinetics of growth and clavulanic acid production in submerged culture carried out in flasks. The results were compared with the ones obtained by Streptomyces clavuligerus ATCC 27064 selected as a control strain. The best clavulanic acid producer was Streptomyces DAUFPE 3060, molecularly identified as Streptomyces variabilis, which increased the clavulanic acid production by 28% compared to the control strain. This work contributes to the enlargement of knowledge on new Streptomyces wild strains able to produce clavulanic acid by submerged culture.
Collapse
|
111
|
Daneshvar E, Sohrabi MS, Kousha M, Bhatnagar A, Aliakbarian B, Converti A, Norrström AC. Shrimp shell as an efficient bioadsorbent for Acid Blue 25 dye removal from aqueous solution. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.09.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
112
|
Lima CA, Campos JF, Filho JLL, Converti A, da Cunha MGC, Porto ALF. Antimicrobial and radical scavenging properties of bovine collagen hydrolysates produced by Penicillium aurantiogriseum URM 4622 collagenase. Journal of Food Science and Technology 2014; 52:4459-66. [PMID: 26139912 DOI: 10.1007/s13197-014-1463-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/17/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
Abstract
A 2(3) full factorial design was used to identify the main effects and interactions of pH, collagen concentration and temperature on the degree of collagen hydrolysis (DH) by collagenase from Penicillium aurantiogriseum URM 4622. Increases in both pH and collagen concentration improved DH, and a positive interaction effect was observed for these variables. On the other hand, temperature had a negative main effect on DH. The maximum value of DH (4.65 μg/mL) was achieved at 7.5 mg/mL collagen concentration, pH 8.0 and 25 °C. The peptide profile showed several peptides with molecular weights lower than 2 kDa and exhibited antibacterial activity against Escherichia coli, Bacillus subtilis and Staphylococcus aureus. An antioxidant activity of 84.7 ± 0.24 % towards the radical ABTS• + was obtained with 50 mg/mL hydrolysates. This study demonstrated that collagen hydrolysed by P. aurantiogriseum URM 4622 collagenase possesses interesting antibacterial and antioxidant activities.
Collapse
|
113
|
Nascimento Sassano CE, Gioielli LA, Converti A, de Oliveira Moraes I, Sato S, de Carvalho JCM. Urea increases fed-batch growth and γ-linolenic acid production of nutritionally valuableArthrospira (Spirulina) platensiscyanobacterium. Eng Life Sci 2014. [DOI: 10.1002/elsc.201400020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
114
|
Apolinário AC, do Nascimento ML, de Luna Vieira JP, Melo CDO, Santos FF, de Lima Damasceno BPG, Converti A, Pessoa A, da Silva JA. Physico-chemical quality parameters of herbal products from Agave sisalana. Nat Prod Res 2014; 28:1992-9. [PMID: 24896813 DOI: 10.1080/14786419.2014.920334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Agave sisalana components have great potential in different pharmaceutical applications, but the quality of herbal raw materials is essential to reach the desired product specifications. In this work, we investigated the physico-chemical quality parameters of bole and wastes from decortication of A. sisalana leaves. The statistically significant variations among products suggest different pharmaceutical applications for each of them.
Collapse
|
115
|
Ortiz Montoya EY, Casazza AA, Aliakbarian B, Perego P, Converti A, de Carvalho JCM. Production ofChlorella vulgarisas a source of essential fatty acids in a tubular photobioreactor continuously fed with air enriched with CO2at different concentrations. Biotechnol Prog 2014; 30:916-22. [DOI: 10.1002/btpr.1885] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/22/2013] [Indexed: 11/07/2022]
|
116
|
de Faria JT, Rocha PF, Converti A, Passos FML, Minim LA, Sampaio FC. Statistical investigation of Kluyveromyces lactis cells permeabilization with ethanol by response surface methodology. Braz J Microbiol 2014; 44:1067-74. [PMID: 24688494 PMCID: PMC3958170 DOI: 10.1590/s1517-83822013000400007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Accepted: 04/04/2013] [Indexed: 11/21/2022] Open
Abstract
The aim of our study was to select the optimal operating conditions to permeabilize Kluyveromyces lactis cells using ethanol as a solvent as an alternative to cell disruption and extraction. Cell permeabilization was carried out by a non-mechanical method consisting of chemical treatment with ethanol, and the results were expressed as β-galactosidase activity. Experiments were conducted under different conditions of ethanol concentration, treatment time and temperature according to a central composite rotatable design (CCRD), and the collected results were then worked out by response surface methodology (RSM). Cell permeabilization was improved by an increase in ethanol concentration and simultaneous decreases in the incubation temperature and treatment time. Such an approach allowed us to identify an optimal range of the independent variables within which the β-galactosidase activity was optimized. A maximum permeabilization of 2,816 mmol L−1 oNP min−1 g−1 was obtained by treating cells with 75.0% v/v of ethanol at 20.0 °C for 15.0 min. The proposed methodology resulted to be effective and suited for K. lactis cells permeabilization at a lab-scale and promises to be of possible interest for future applications mainly in the food industry.
Collapse
|
117
|
Souza EC, Moraes DA, Vessoni-Penna TC, Converti A, Oliveira RPDS. Volumetric Oxygen Mass Transfer Coefficient and Surface Tension in Simulated Salt Bioremediation Media. Chem Eng Technol 2014. [DOI: 10.1002/ceat.201300592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
118
|
Apolinário AC, de Lima Damasceno BPG, de Macêdo Beltrão NE, Pessoa A, Converti A, da Silva JA. Inulin-type fructans: A review on different aspects of biochemical and pharmaceutical technology. Carbohydr Polym 2014; 101:368-78. [DOI: 10.1016/j.carbpol.2013.09.081] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 09/10/2013] [Accepted: 09/21/2013] [Indexed: 01/22/2023]
|
119
|
Frumento D, Casazza AA, Al Arni S, Converti A. Cultivation of Chlorella vulgaris in tubular photobioreactors: A lipid source for biodiesel production. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.10.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
120
|
Beruto DT, Lagazzo A, Frumento D, Converti A. Kinetic model of Chlorella vulgaris growth with and without extremely low frequency-electromagnetic fields (EM-ELF). J Biotechnol 2013; 169:9-14. [PMID: 24216340 DOI: 10.1016/j.jbiotec.2013.10.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 10/17/2013] [Accepted: 10/25/2013] [Indexed: 01/12/2023]
Abstract
Chlorella vulgaris was grown in two bench-scale photobioreactors with and without the application of a low intensity, low frequency electromagnetic field (EM-ELF) of about 3mT. Cell concentration and tendency of cells to form aggregates inside the reactor were recorded over a 30 days-time period at 0.5L-constant medium volume in the temperature range 289-304K. At 304K, after a cultivation period of 15 days, the rate of cell death became predominant over that of growth. In the temperature range 289-299K, a two step-kinetic model based on the mitotic division and the clusterization processes was developed and critically discussed. The best-fitted curves turned out to have a sigmoid shape, and the competition between mitosis and clusterization was investigated. Without EM-ELF, the temperature dependence of the specific rate constant of the mitotic step yielded an apparent total enthalpy of 15±6kJmol(-1), whose value was not influenced by the EM-ELF application. The electromagnetic field was shown to exert a significant effect on the exothermic clusterization step. The heat exchange due to binding between cells and liquid medium turned out to be -44±5kJmol(-1) in the absence of EM-ELF and -68±8kJmol(-1) when it was active. Optical microscopy observations were in agreement with the model predictions and confirmed that EM-ELF was able to enhance cell clusterization.
Collapse
|
121
|
Oliveira RPS, Casazza AA, Aliakbarian B, Perego P, Converti A, Oliveira MN. Influence of fructooligosaccharides on the fermentation profile and viable counts in a symbiotic low fat milk. Braz J Microbiol 2013; 44:431-4. [PMID: 24294233 PMCID: PMC3833139 DOI: 10.1590/s1517-83822013000200014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 06/05/2012] [Indexed: 11/21/2022] Open
Abstract
This study evaluated the effects of prebiotics on fermentation profile and growth of Lactobacillus acidophilus, Lactobacillus bulgaricus, Lactobacillus rhamnosus, and Bifidobacterium lactis in co-cultures with Streptococcus thermophilus. Acidification rate and viability were positively influenced by the co-culture with B. lactis and by both inulin or oligofructose in low fat milk.
Collapse
|
122
|
Torrado AM, Cortés S, Manuel Salgado J, Max B, Rodríguez N, Bibbins BP, Converti A, Manuel Domínguez J. Citric Acid production from orange peel wastes by solid-state fermentation. Braz J Microbiol 2013; 42:394-409. [PMID: 24031646 PMCID: PMC3768945 DOI: 10.1590/s1517-83822011000100049] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 09/24/2010] [Accepted: 11/03/2010] [Indexed: 11/25/2022] Open
Abstract
Valencia orange (Citrus sinensis) peel was employed in this work as raw material for the production of citric acid (CA) by solid-state fermentation (SSF) of Aspergillus niger CECT-2090 (ATCC 9142, NRRL 599) in Erlenmeyer flasks. To investigate the effects of the main operating variables, the inoculum concentration was varied in the range 0.5·103 to 0.7·108 spores/g dry orange peel, the bed loading from 1.0 to 4.8 g of dry orange peel (corresponding to 35-80 % of the total volume), and the moisture content between 50 and 100 % of the maximum water retention capacity (MWRC) of the material. Moreover, additional experiments were done adding methanol or water in different proportions and ways. The optimal conditions for CA production revealed to be an inoculum of 0.5·106 spores/g dry orange peel, a bed loading of 1.0 g of dry orange peel, and a humidification pattern of 70 % MWRC at the beginning of the incubation with posterior addition of 0.12 mL H2O/g dry orange peel (corresponding to 3.3 % of the MWRC) every 12 h starting from 62 h. The addition of methanol was detrimental for the CA production. Under these conditions, the SSF ensured an effective specific production of CA (193 mg CA/g dry orange peel), corresponding to yields of product on total initial and consumed sugars (glucose, fructose and sucrose) of 376 and 383 mg CA/g, respectively. These results, which demonstrate the viability of the CA production by SSF from orange peel without addition of other nutrients, could be of interest to possible, future industrial applications.
Collapse
|
123
|
Lataoui M, Seffen M, Aliakbarian B, Casazza AA, Converti A, Perego P. Optimisation of phenolics recovery from Vitex agnus-castus Linn. leaves by high-pressure and temperature extraction. Nat Prod Res 2013; 28:67-9. [PMID: 24404955 DOI: 10.1080/14786419.2013.832678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
To optimise recovery of phenolics from Vitex agnus-castus Linn., a non-conventional high-pressure (2-24 bar) and temperature (100-180°C) extraction method was used under nitrogen atmosphere with methanol as a solvent. Optimal temperature was between 100 and 140°C, and optimal extraction time was about one half that of conventional solid/liquid extraction at room temperature. Final yields of total polyphenols, total flavonoids, o-diphenols and anthocyanins extraction were 2.0, 3.0, 2.5 and 11-fold those obtained by conventional extraction.
Collapse
|
124
|
Pigatto G, Lodi A, Aliakbarian B, Converti A, da Silva RMG, Palma MSA. Phenol oxidation by mushroom waste extracts: a kinetic and thermodynamic study. BIORESOURCE TECHNOLOGY 2013; 143:678-681. [PMID: 23849755 DOI: 10.1016/j.biortech.2013.06.069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 06/16/2013] [Accepted: 06/18/2013] [Indexed: 06/02/2023]
Abstract
Tyrosinase activity of mushroom extracts was checked for their ability to degrade phenol. Phenol oxidation kinetics was investigated varying temperature from 10 to 60 °C and the initial values of pH, enzyme activity and phenol concentration in the ranges 4.5-8.5, 1.43-9.54 U/mL and 50-600 mg/L, respectively. Thermodynamic parameters of phenol oxidation and tyrosinase reversible inactivation were estimated. Tyrosinase thermostability was also investigated through residual activity tests after extracts exposition at 20-50 °C, whose results allowed exploring the thermodynamics of enzyme irreversible thermoinactivation. This study is the first attempt to separate the effects of reversible unfolding and irreversible denaturation of tyrosinase on its activity. Extracts were finally tested on a real oil mill wastewater.
Collapse
|
125
|
Balciunas EM, Castillo Martinez FA, Todorov SD, Franco BDGDM, Converti A, Oliveira RPDS. Novel biotechnological applications of bacteriocins: A review. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.11.025] [Citation(s) in RCA: 221] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|