Growth and sporulation behaviour of Penicillium roquefortii in solid substrate fermentation: effect of the hydric parameters of the medium

Larroche, Christian; Theodore, M.; Gros, Jean‐Bernard

doi:10.1007/bf00174465

Cited by 11 publications

(3 citation statements)

References 17 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10). However, it should be noted that the moisture content of the solid substrate itself during fermentation is probably lower than the measured overall moisture content, because biomass, as part of the wheat grain, probably has a higher moisture content than the overall average (Larroche et al, 1992;Oriol et al, 1988).…”

Section: Effect Of Evaporative Coolingmentioning

confidence: 99%

Temperature control in a continuously mixed bioreactor for solid-state fermentation

Nagel

Tramper

Bakker

et al. 2000

Biotechnol. Bioeng.

View full text Add to dashboard Cite

Section: Effect Of Evaporative Coolingmentioning

confidence: 99%

Temperature control in a continuously mixed bioreactor for solid-state fermentation

Nagel

Tramper

Bakker

et al. 2000

Biotechnol. Bioeng.

View full text Add to dashboard Cite

“…Previous studies have shown that fungal development can cease when the water content is below a certain threshold value. Lesions of Phytophthora cinnamomi on stems of Eucalyptus marginata ceased their extension when the relative water content was <85% (33), and mycelial growth and sporulation of Penicillium roquefortii on buckwheat seeds ceased when the relative water content was close to 40% (18). In studies on fungal growth in alfalfa hay the threshold relative water content for ascoma development (28 to 42%) was lower than that for mycelial development (52 to 65%) of fungi in the hay (2).…”

Section: Discussionmentioning

confidence: 96%

Effects of Environmental Factors on Development of Pyrenopeziza brassicae (Light Leaf Spot) Apothecia on Oilseed Rape Debris

Gilles¹,

Fitt²,

Jeger³

2001

Phytopathology®

View full text Add to dashboard Cite

The development of Pyrenopeziza brassicae (light leaf spot) apothecia was studied on petiole debris from artificially infected oilseed rape leaves incubated at temperatures from 6 to 22°C under different wetness regimes and in 16 h light/8 h dark or continuous darkness. There was no significant difference between light treatments in numbers of apothecia that developed. Mature apothecia developed at temperatures from 5 to 18°C but not at 22°C. The rate of apothecial development decreased as temperature decreased from 18 to 5°C; mature apothecia were first observed after 5 days at 18°C and after 15 days at 6°C. Models were fitted to estimates of the time (days) for 50% of the maximum number of apothecia to develop (t 1 ; model 1, t 1 = 7.6 + 55.8(0.839) T ) and the time for 50% of the maximum number of apothecia to decay (t 2 ; model 2, t 2 = 24.2 + 387(0.730) T ) at temperatures (T) from 6 to 18°C. An interruption in wetness of the petiole debris for 4 days after 4, 7, or 10 days of wetness delayed the time to observation of the first mature apothecia for ≈4 days and decreased the number of apothecia produced (by comparison with continuous wetness). A relationship was found between water content of pod debris and electrical resistance measured by a debris-wetness sensor. The differences between values of t 1 predicted by model 1 and observed values of t 1 were 1 to 9 days. Model 2 did not predict t 2 ; apothecia decayed more quickly under natural conditions than predicted by model 2.

show abstract

“…The suspension was diluted in sterile water and the concentration of spores was determined using a Malassez chamber. 11 Concentration was expressed in terms of the number of spores g −1 dry CP.…”

Section: Spore Production Measurementsmentioning

confidence: 99%

Penicillium commune spore production in solid‐state fermentation of coffee pulp at laboratory scale and in a helical ribbons rotating reactor

Nava

Gaime-Perraud

Huerta‐Ochoa

et al. 2006

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Penicillium commune was grown on coffee pulp (CP) by solid-state fermentation (SSF). The effects of the duration of CP thermal treatment and the effects of incubation temperature on spore production yield were studied at laboratory scale. The effect of mixing during fermentation was assayed at pilot plant scale in a 70 L stainless steel non-aseptic reactor equipped with helical ribbons for mixing solids. For thermal treatments of CP at 121• C for 10, 20, 30 and 40 min, no significant difference in spore production yield was observed. Maximum sporulation yield was found at 25• C; when the incubation temperature was higher than 30 • C, the sporulation yield decreased significantly. A spore production yield of 3.7 × 10 9 spores g −1 dry CP was obtained when continuous mixing (0.25 rpm) was used at pilot plant scale; however, a decrease in spore yield (1.4 × 10 9 spores g −1 dry CP) was observed under static conditions. Spore production was not affected when a scale factor between 79 and 105 was assayed from laboratory to pilot plant; at this level, the productivity obtained was 3.1 × 10 7 spores g −1 dry CP h −1 . This value is similar to that found in other reports using natural substrates but working at a smaller scale.

show abstract

Growth and sporulation behaviour of Penicillium roquefortii in solid substrate fermentation: effect of the hydric parameters of the medium

Cited by 11 publications

References 17 publications

Temperature control in a continuously mixed bioreactor for solid-state fermentation

Temperature control in a continuously mixed bioreactor for solid-state fermentation

Effects of Environmental Factors on Development of Pyrenopeziza brassicae (Light Leaf Spot) Apothecia on Oilseed Rape Debris

Penicillium commune spore production in solid‐state fermentation of coffee pulp at laboratory scale and in a helical ribbons rotating reactor

Contact Info

Product

Resources

About