Solid substrate cultivation of Gibberella fujikuroi on an inert support

Gelmi, Claudio A.; Pérez-Correa, Ricardo; González, Mónica; Agosín, Eduardo

doi:10.1016/s0032-9592(00)00161-8

Cited by 40 publications

(27 citation statements)

References 16 publications

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“…The increase in the glucosamine level in the control group was similar to the one obtained by Desgranges et al (1991) in Beauveria bassiana cultivation, by Gelmi et al (2000) in Gibberella fujikuroi cultivation and by Nopharatana et al (2003) in Rhizopus oligosporus cultivation. However, it was different from the increase found in the case of Thermoascus aurantiacus in which the glucosamine content remained constant over the period of the study.…”

Section: Determination Of the Glucosaminesupporting

confidence: 84%

Assessment of the antifungal activity of Spirulina platensis phenolic extract against Aspergillus flavus

et al. 2011

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The production of safe food has stimulated the search for natural substances that possess antifungal activity. The indirect methods of estimating fungal biomass are based on the measurement of glucosamine, ergosterol and protein -typical compounds produced during the development of biomass. The aim of the study was to assess the effect of the phenolic extract from Spirulina platensis on the production of structural compounds in Aspergillus flavus, in order to identify its action on fungal inhibition. The Spirulina platensis methanolic extracts presented 1.15 mg phenolic compound/g Spirulina platensis, which showed an antifungal effect against Aspergillus flavus, inhibiting the glucosamine production up to 56%. Therefore, it may be employed as natural defense when food protection is necessary.Index terms: Phenolic inhibitors, antifungal property, glucosamine, protein, ergosterol. RESUMOA produção de alimentos seguros tem estimulado a busca por substâncias naturais que possuem atividade antifúngica. Os métodos indiretos de estimativa de biomassa fúngica são baseados na medição de glucosamina, ergosterol e proteína -compostos típicos produzidos durante o desenvolvimento da biomassa. Neste estudo, objetivou-se avaliar o efeito do extrato fenólico de Spirulina platensis na produção de componentes estruturais em Aspergillus flavus, a fim de identificar seu mecanismo de ação dos fenóis na inibição fúngica. O extrato metanólico de Spirulina platensis apresentou 1,15 mg de compostos fenólicos/g Spirulina platensis, apresentando um efeito antifúngico contra Aspergillus flavus, inibindo a produção de glucosamina em até 56%. Portanto, pode ser empregado como antifúngico natural quando for necessária a proteção de alimentos.

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Section: Determination Of the Glucosaminesupporting

confidence: 84%

Assessment of the antifungal activity of Spirulina platensis phenolic extract against Aspergillus flavus

et al. 2011

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“…In their study, spent malt grains were used as the inert support. As it was difficult to separate the gum from spent malt grains, polyurethane foam (PUF), which has been used in the production of organic acids [19], enzymes [20], and antibiotics [21], was chosen as the inert carrier for the present study. Compared with other materials such as spent malt grains and ion-exchange resins, PUF has more homogeneous porous structure, and PUF can be reused.…”

mentioning

confidence: 99%

Xanthan Production on Polyurethane Foam and Its Enhancement by Air Pressure Pulsation

Zhang

Chen

2010

Appl Biochem Biotechnol

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In this study, we evaluated the feasibility of solid-state fermentation (SSF) on polyurethane foam (PUF) for xanthan production. The effects of air pressure pulsation (APP) on biomass accumulation and final xanthan concentration were also studied. Under suitable conditions (15% inoculum, 0.5-cm (side length) PUF cubes, 15 mL medium per gram cubes and 4.5 cm bed depth), the broth was dispersed on the PUF as a film. When the initial glucose concentration in the media was low (20 and 40 g L⁻¹), there was no significant difference between the final xanthan concentration in static SSF and submerged fermentation (SMF). When high initial glucose concentrations (60 and 80 g L⁻¹) were used, the final gum concentrations in SSF were much higher than those in SMF. When the APP technique was applied in xanthan production with a medium containing a high glucose concentration (80 g L⁻¹), the oxygen consumption rate of Xanthomonas campestris was significantly enhanced at the later stages of fermentation, and both the biomass and xanthan concentration were improved. The results indicated that SSF on PUF is suitable for xanthan preparation, especially when the initial glucose concentration ranged from 60 to 80 g L⁻¹. Those results also demonstrated that APP technology can be used to enhance xanthan yields.

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“…These authors demonstrated that PUF can be a very useful support by producing a high number of spores per gram of medium in a short time of incubation, with ease spore extraction and reusability of the same mycelia. The use of an inert support loaded with a culture-specific liquid medium provides a constant physical structure throughout the process and facilitates reproducible and detailed physiological and kinetic studies in SSC, which will eventually be the basis for efficient process development, control strategies and reactor design (Gelmi et al, 2000;Ooijkaas et al, 2000). In addition, because the structure of the inert support cannot be altered by microorganisms or microbial metabolites, it can prevent agglomeration and limitations to heat and mass transfer (Chen, 2013).…”

Section: Introductionmentioning

confidence: 99%

OXYGEN TRANSFER IN THE SOLID-STATE CULTIVATION OF D. monoceras ON POLYURETHANE FOAM AS AN INERT SUPPORT

Bastos

Motta

Santana

2016

Braz. J. Chem. Eng.

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-In recent years, there has been a resurgence of interest concerning solid-state cultivation processes due to a number of advantages over submerged cultivation. However, studies on oxygen transfer and the performance of bioreactors are lacking. Processes that use inert supports loaded with chemically-defined liquid media have several potential applications and offer numerous advantages, such as improved process control and monitoring and enhanced process consistency compared with cultivation on natural solid substrates. The aim of this research was to study the oxygen transfer for the production of allergenic proteins from a biomass of Drechslera (Helminthosporium) monoceras cultured in a packed-bed reactor filled with polyurethane foam. The results show that a high protein concentration can be produced on an inert support with a high overall oxygen transfer coefficient (K L a) during cultivation.

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Solid substrate cultivation of Gibberella fujikuroi on an inert support

Cited by 40 publications

References 16 publications

Assessment of the antifungal activity of Spirulina platensis phenolic extract against Aspergillus flavus

Assessment of the antifungal activity of Spirulina platensis phenolic extract against Aspergillus flavus

Xanthan Production on Polyurethane Foam and Its Enhancement by Air Pressure Pulsation

OXYGEN TRANSFER IN THE SOLID-STATE CULTIVATION OF D. monoceras ON POLYURETHANE FOAM AS AN INERT SUPPORT

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