Sentence examples for headspace oxygen from inspiring English sources
The oxygen permeability of the packaging materials can alter the headspace oxygen concentration.
On a tour of the cavernous and gleaming BrewDog plant in Ellon, just north of Aberdeen, Dickie happily batted around terminology – IBU, ABV, pH, haze, present gravity, headspace oxygen – with PhD-level microbiologists working in the lab.
Headspace oxygen concentrations were measured with a Varian 3800 gas chromatographic (GC) system equipped with a thermal conductivity detector (TCD) and a tandem column (Molsieve 5 A/Porabond Q, Agilent, CA, USA).
The three factors included in the study were pH, ionic strength of the buffer and the headspace oxygen content in the container.
Thus, it is not enough to keep the headspace oxygen level low, if the headspace volume at the same time is large, there will still be sufficient oxygen for colour deteriorating processes to take place.
However, after addition of 1 mM formate to stimulate nitrite reduction, an oxygen concentration of up to 2.1% (5.25 µM) was detected by the oxygen electrode in the liquid phase of the continuous culture after 1.5 hours and by headspace oxygen analysis using GC-TCD (Figure S3).
These data were obtained by measuring oxygen headspace concentration above the scavenging polymer with an OxySense® 200T non-invasive oxygen sensor, and, for comparison, oxygen uptake was measured with an analytical balance.
Industrial bread dough mixing often involves a period of mixing under high headspace pressure to enhance oxygen availability, followed by a period of partial vacuum to favourably manipulate the final bubble size distribution.
Milk lipid and soybean oil oxidation declines upon reduction of the headspace partial pressure of oxygen (Kacyn et al., 1983; Koelsch et al., 1991).
The measured content of oxygen in the headspace was incorporated in the model and the interaction between measured oxygen content in the headspace and the product to headspace volume ratio was found to be crucial.
The δ18O of dissolved oxygen in the headspace was measured in a Finnigan GasBench II attached to a Finnigan DeltaPlusXP isotope ratio mass spectrometer, with precision better than 0.1‰.
