Simultaneous measurement of oxygen and carbon dioxide diffusivity in pear fruit tissue

2003 ◽  
Vol 29 (2) ◽  
pp. 155-166 ◽  
Author(s):  
W Schotsmans ◽  
B.E Verlinden ◽  
J Lammertyn ◽  
B.M Nicolaı̈
Keyword(s):  
Carbon Dioxide ◽  
Simultaneous Measurement ◽  
Pear Fruit ◽  
Fruit Tissue

SIMULTANEOUS MEASUREMENT OF OXYGEN AND CARBON DIOXIDE DIFFUSIVITIES IN PEAR FRUIT TISSUE USING OPTICAL SENSORS

2005 ◽  
pp. 243-251
Author(s):  
Q. Tri Ho ◽  
B.E. Verlinden ◽  
P. Verboven ◽  
S. Vandewalle ◽  
B.M. Nicolaï
Keyword(s):  
Carbon Dioxide ◽  
Optical Sensors ◽  
Simultaneous Measurement ◽  
Pear Fruit ◽  
Fruit Tissue

Simultaneous measurement of oxygen and carbon dioxide diffusivities in pear fruit tissue using optical sensors

2007 ◽  
Vol 87 (10) ◽  
pp. 1858-1867 ◽  
Author(s):  
Quang Tri Ho ◽  
Bert E Verlinden ◽  
Pieter Verboven ◽  
Stefan Vandewalle ◽  
Bart M Nicolaï
Keyword(s):  
Carbon Dioxide ◽  
Optical Sensors ◽  
Simultaneous Measurement ◽  
Pear Fruit ◽  
Fruit Tissue

scholarly journals Involvement of Aureobasidium pullulans and Rhodotorula glutinis in Russet of d'Anjou Pear Fruit

Plant Disease ◽  
2002 ◽  
Vol 86 (6) ◽  
pp. 625-628 ◽  
Author(s):  
R. A. Spotts ◽  
L. A. Cervantes
Keyword(s):  
Aureobasidium Pullulans ◽  
Rhodotorula Glutinis ◽  
Pear Fruit ◽  
Full Bloom ◽  
Fruit Tissue ◽  
History Of ◽  
Fruit Surface

d'Anjou pear, the main cultivar grown in the Mid-Columbia Region of Oregon, is subject to russeting of the fruit surface, resulting in reduced quality and value. The role of Aureobasidium pullulans and Rhodotorula glutinis in russet of pear fruit was studied. Inoculations were done at full bloom in 1998 and 1999 and petal fall in 1999 with a log range of concentrations up to 108CFU/ml. Populations of A. pullulans on floral and fruit tissue were monitored during spring 1999 and 2000 in six orchards with a history of russet. Russet of fruit in both studies was evaluated at harvest. In 1998 neither fungus increased russet. In 1999, inoculation with two strains of each fungus at 108 CFU/ml increased russet. Inoculation with 104 or 106 CFU/ml did not increase russet in either year. In commercial orchards, there was no correlation between fruit russet and the populations of A. pullulans on floral and fruit tissue. Populations were less than 103 CFU/g of tissue. We conclude that A. pullulans and R. glutinis are not major contributors to russet of d'Anjou pear fruit in the Mid-Columbia Region.

OPTIMIZATION OF A MEASUREMENT SET-UP FOR ESTIMATION OF O2 AND CO2 DIFFUSIVITIES IN PEAR FRUIT TISSUE USING OPTICAL SENSORS

2005 ◽  
pp. 113-120
Author(s):  
Q. Tri Ho ◽  
B.E. Verlinden ◽  
P. Verboven ◽  
B.M. Nicolaï ◽  
S. Vandewalle
Keyword(s):  
Optical Sensors ◽  
Pear Fruit ◽  
Fruit Tissue ◽  
Set Up

Combined amperometric sensors for simultaneous measurement of carbon dioxide and oxygen

1993 ◽  
Vol 17 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Fang Qian ◽  
Juntao Lu ◽  
Zhongbo Zhou ◽  
Chuansin Cha
Keyword(s):  
Carbon Dioxide ◽  
Simultaneous Measurement ◽  
Amperometric Sensors

scholarly journals METABOLIC CHANGES ASSOCIATED WITH OXYGEN STRESS IN PEAR FRUITS

HortScience ◽  
1990 ◽  
Vol 25 (11) ◽  
pp. 1355F-1356
Author(s):  
George D. Nanos ◽  
Roger J. Romani ◽  
Adel A. Kader
Keyword(s):  
Alcohol Dehydrogenase ◽  
Ethanol Production ◽  
Ethylene Production ◽  
Pyruvate Decarboxylase ◽  
Insect Control ◽  
Pear Fruit ◽  
Oxygen Stress ◽  
Fruit Tissue ◽  
Subsequent Recovery ◽  
Alcohol Dehydrogenase Activity

The response of pear fruits and suspension-cultured pear fruit cells to 0% or 0.25% O2 is being examined to evaluate the feasibility of using such atmospheres for postharvest insect control. These treatments inhibited ethylene production, had no effect on acetaldehyde content, and increased ethanol production in pears kept at 20C for 10 days. The blossom end area of pear fruits was more prone to anaerobiosis, as indicated by increased alcohol dehydrogenase activity and ethanol content. Pear fruit plugs showed increased respiration and ethylene production rates when skin was present compared to plugs without skin. Methods for measuring activity of alcohol dehydrogenase, pyruvate decarboxylase, and pyruvate kinase have been modified and optimized and will be used to determine changes in pear fruit tissue during low O2 treatment and subsequent recovery in air.

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