Respiratory parameters and sugar catabolism of mushroom (Agaricus bisporus Lange)

Varoquaux, P
Gouble, B
Barron, C
Yıldız, Fatih
The respiration rate (RR) of mushroom (Agaricus bisporus Lange, strain X25) under air follows Arrhenius' law with an apparent activation energy of 43 400 J mol(-1) corresponding to a Q(10) of 2.9 between 10 and 20 degrees C. Oxygen from 20 to 1 kPa did not affect RR at temperatures ranging from 5 to 20 degrees C, confirming previous studies. The initial RR of mushroom (same cultivar, flush, growing conditions) measured 24 h after harvesting can vary from 1 to 2 mmol O-2 kg(-1) h(-1) at 10 degrees C. The apparent K-m value was below 0.1 kPa at 10 degrees C, and could not be estimated more accurately due to instrumental limitations. Decrease in dry matter of modified atmosphere-packed mushrooms matched the theoretical carbon consumption calculated from the constant respiration rate. Glucose and glycogen were rapidly catabolized, whereas mannitol consumption began 3 and 8 days after harvest at 20 and 10 degrees C, respectively. It was concluded that no extension of mushroom shelf life was attainable through modified atmosphere packaging. Controlling RH within the package is likely to be more effective.


Thermal and chemical inactivation of lactococcal bacteriophages
BUZRUL, Sencer; OZTURK, Pinar; Alpas, Hami; AKÇELİK, Mustafa (Elsevier BV, 2007-01-01)
Ten lactococcal bacteriophages in M 17 broth were treated by heat (72 degrees C, 15 min and 90 degrees C, 5 min), ethanol and isopropanol at concentrations of 10%, 50%. 75% and 100% (v/v). The heat treatments were not sufficient to inactivate all the bacteriophages studied whereas ethanol, which was also more efficient biocide than isopropanol, at a concentration of 75% could inactivate all the phages in I min. The 50% and 75% of ethanol were more effective than 100%, which was also observed for isopropanol...
Multi-pulsed high hydrostatic pressure treatment for inactivation and injury of Escherichia coli
Pilavtepe-Celik, Mutlu; BUZRUL, Sencer; Alpas, Hami; LARGETEAU, Alain; DEMAZEAU, Gerard (Springer Science and Business Media LLC, 2011-09-01)
Escherichia coli cells in peptone water were pressurized at 300 MPa at ambient temperature with no holding time (pulse series) and with a total holding duration of 300 s for single- (300 s x 1 pulse) and multi-pulsed (150 s x 2 pulses, 100 s x 3 pulses, 75 s x 4 pulses, 60 s x 5 pulses, 50 s x 6 pulses and 30 s x 10 pulses) high hydrostatic pressure (HHP) treatments. Multi-pulsed HHP treatment with no holding time indicated that as the pulse number increased the number of inactivated and injured cells also ...
Response surfaces of hazelnut oil yield in supercritical carbon dioxide
Ozkal, SG; Yener, Meryem Esra; Salgin, U; Mehmetoglu, U (Springer Science and Business Media LLC, 2005-01-01)
Response Surface Methodology was used to determine the effects of solvent flow rate (1, 3 and 5 g/ min), pressure (300, 375 and 450 bar) and temperature (40, 50 and 60 degreesC) on hazelnut oil yield in supercritical carbon dioxide (SC-CO2). Oil yield was represented by a second order response surface equation (R-2 = 0.997) using Box-Bhenken design of experiments. Oil yield increased with increasing SC-CO2 flow rate, pressure and temperature. The maximum oil yield was predicted from the response surface equ...
Recovery of strawberry aroma compounds by pervaporation
Isci, A; Şahin, Serpil; Şümnü, Servet Gülüm (Elsevier BV, 2006-07-01)
The main objective of this study was to determine the effects of feed temperature (30, 40, 50 degrees C), concentration (50, 100, 150 ppm), composition (different strawberry model solutions) and permeate pressure (4, 8 mbar) on recovery of strawberry aroma compounds by pervaporation. Pervaporation was performed using a hydrophobic membrane, PERVAP 1070 (PDMS). As the feed temperature increased or downstream pressure decreased, the mass flux and selectivity increased in pervaporation of methyl butyrate (MTB)...
OZILGEN, S; OZILGEN, M; REID, DS (Elsevier BV, 1994-01-01)
Homogeneous and heterogeneous nucleation rates of ice in aqueous systems are described in the literature with the equation J = A exp (B tau). There are a very large number of published data available for variation of the constants A and B with experimental conditions. Results of this study show that the parameters obtained in the experiments with differential scanning calorimeter and the microscopic technique may be described separately with an empirical compensation equation of the form In A = aB + b. The ...
Citation Formats
P. Varoquaux, B. Gouble, C. Barron, and F. Yıldız, “Respiratory parameters and sugar catabolism of mushroom (Agaricus bisporus Lange),” POSTHARVEST BIOLOGY AND TECHNOLOGY, pp. 51–61, 1999, Accessed: 00, 2020. [Online]. Available: