Claim · model-written summary
Weak PG activity was observed in the immature fruit of Pyrus communis in 1962 and 1963.
- Taxon
- Pyrus communis
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Organ / stage
- immature fruite7
- Gene
- PGe7
- Outcome
- PG activitye7
- Qualifier
- in 1962 and 1963e7
Not reportedMaterialCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e7“Weak PG activity was observed in the immature fruit in 1962 and 1963. No activity was observed in 1966, even in the presence of polyvinylpyrrolidone”
t0“the Pear (Pyrus communis)”
Title
Pectic Enzymes and Development of the Pear (Pyrus communis)
C. W. NAGEL; M. E. PATTERSON Journal of Food Science 1967. doi:10.1111/j.1365-2621.1967.tb01316.x
Other claims from this paper (12)
- Observation PE activity per pear increased during maturation in Pyrus communis.
- Association PE activity per pear was positively correlated with total weight in 1962 (r = 0.93) in Pyrus communis.
- Association PE activity per pear was positively correlated with total weight in 1963 (r = 0.87) in Pyrus communis.
- Association PE activity in Pyrus communis was positively correlated with protein in 1962 (r = 0.84).
- Association PE activity in Pyrus communis was positively correlated with protein in 1963 (r = 0.91).
- Observation The amount of PE activity per gram fresh weight and per milligram protein in Pyrus communis decreased during maturation.
- Observation The specific activity of the enzyme in Pyrus communis decreased during maturation.
- Observation The percent recovery of PE in Pyrus communis decreased as the fruit matured and ripened on the tree.
- Intervention effect Polyvinylpyrrolidone in the extraction procedure counteracted the decline in PE recovery on ripening.
- Mechanism Small changes in PE activity could not account for the changes in pectin esterification in Pyrus communis.
- Observation PG assays on Pyrus communis gave variable results.
- Observation No PG activity was observed in Pyrus communis in 1966, even in the presence of polyvinylpyrrolidone.