What's the difference between aeration and leavening?

Aeration


Definition:

  • (n.) Exposure to the free action of the air; airing; as, aeration of soil, of spawn, etc.
  • (n.) A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.
  • (n.) The act or preparation of charging with carbonic acid gas or with oxygen.

Example Sentences:

  • (1) A theory for the neural control of middle ear aeration is proposed.
  • (2) It is suggested that lung ventilation takes place in the avian embryo in three distinct stages: the major air-ways become aerated, then respiratory movements begin and lastly the tertiary bronchi are slowly aerated.
  • (3) We therefore investigated the influence of different carbon dioxide tensions and bicarbonate concentrations on directly measured pH of organ baths aerated with mass-spectrometric analyzed O2-CO2 gases.
  • (4) The test organism, grown under anaerobic conditions in Trypticase soy broth, was diluted in buffered salt solution, and about 2 x 10(4) cells were suspended in 10 ml of an aerated broth.
  • (5) On the other hand, maintaining constant DO levels at 50 or 10% raised exoprotein levels higher than those achieved in a culture grown at the optimal aeration rate.
  • (6) None of the mutants are oxygen sensitive; they grow as well as wild bacteria, even when aerated.
  • (7) In helical strips of dog cerebral arteries contracted with K+ or prostaglandin F2 alpha, the increase in CO2 from 5 to 15% in the gas aerating the bathing media produced a persistent relaxation in association with a rise of PCO2 and a fall of pH and PO2.
  • (8) Although X-ray studies in many of the patients revealed mucosal swelling four weeks after surgery, the maxillary sinuses were well aerated 8 weeks after operation.
  • (9) One problem remains: permanent aeration of the new tympanic cavity.
  • (10) The time of the sporulating forms appearance depended on the aeration rate which defined the quantitative composition of the population during the phase of the culture active growth and the stationary phase.
  • (11) Azotobacter chroococcum (ATCC 7493) was grown in continuous culture with intense vortex aeration (stirring rate 1750 rpm) with up to 50% O2 in the gas phase.
  • (12) Assays on the Rm nifA-m RNA produced by the constitutive Rm nifA in E. coli under aerobic and microaerobic conditions with the cloned nifA as a probe for dot blot hybridization showed a marked decrease of Rm nifA mRNA when the bacteria were grown under aeration.
  • (13) Acute anoxia was induced by aerating a muscle chamber with a gas mixture of 95% nitrogen and 5% carbon dioxide.
  • (14) Amylase production by a Bacillus subtilis strain can occur without aeration after reaching the stationary phase of growth, provided the pH is controlled.
  • (15) The photosynthetically-incompetent mutant V-2 of Rhodopseudomonas spheroides which is incapable of synthesising bacteriochlorophyll was grown aerobically under conditions of both high and low aeration.
  • (16) The fim(+) bacteria did not show selective outgrowth in mixed cultures grown in broth aerated by continuous shaking, in static broth incubated anaerobically in hydrogen, and on aerobic agar plates, i.e., under conditions not allowing an advantage from pellicle formation.
  • (17) The rate of alpha-keto acid biosynthesis, on the contrary, decreased in the conditions of low aeration.
  • (18) Pyruvate-dependent glutamine aminotransferase activity is not regulated directly by O2 itself since a rho- strain showed a high activity regardless of the extent of aeration of cultures.
  • (19) Bacteriorhodopsin formation was negligible when washed suspensions of cells from dark, limited aeration or light, adequate aeration cultures were incubated in the light with limited aeration.
  • (20) Seventy two left anterior descending and circumflex coronary artery rings were removed in twelve dogs and mounted in organ chambers filled with Krebs-Ringer bicarbonate solution and aerated with 95% O2-5% CO2.

Leavening


Definition:

  • (p. pr. & vb. n.) of Leaven
  • (n.) The act of making light, or causing to ferment, by means of leaven.
  • (n.) That which leavens or makes light.

Example Sentences:

  • (1) Gellatly believes that anyone can make their own bread at home and, for a sourdough loaf, the process begins with a tangy starter (sometimes also known as a mother or leaven).
  • (2) One reader wondered whether good fantasy narrative needed perceptions of "reality" in order "to leaven it".
  • (3) Any such levity, however, is leavened by the tacit acknowledgment that existence is futile, and we are all just bags of flesh and bones whiling away the days before death and putrefaction sets in.
  • (4) The predominance of S. exiguus, its vigor in the particular acidic environment of the sour dough, and the correlation of its numbers with the leavening function constitute strong evidence on the role of this organism in the sour dough system.
  • (5) There was always a rueful melancholy, stiffened by irony and leavened by humour about him.
  • (6) After the death of Alexander the Great in 323BC the Greek garrisons of India and Afghanistan found themselves cut off from their Mediterranean homeland, and had no choice but to stay on, intermingling with the local peoples, and leavening Indian learning with classical philosophy.
  • (7) Twenty breads with leavening times varying from 0 to 120 h were prepared.
  • (8) The phytic acid content of bread containing bran was reduced to about 40% after 2 h of leavening and to 15% after 2 d. No further decrease was observed.
  • (9) This paper takes as index the content of free acids and total acids, the action of pepsin in the stomachs of hungry mice, impelling functions and intestines of hungry mice and makes a comparison of the raw products with the processed products of medicated leaven.
  • (10) The Telegraph, for whom he writes that weekly column, says he would be the business secretary , but that must be the paper’s attempt to leaven all the hard news with comedy.
  • (11) Extrinsic labeling of the calcium of whole-wheat flour results in a degree of labeling homogeneity equivalent to that of intrinsic labeling, at least for a leavened bread product.
  • (12) The feasibility of adding chick-pea flour substituting part of wheat flour in yeast-leavened bread-making in order to increase the protein value, was studied.
  • (13) In the majority opinion of Kimble v Marvel Enterprises, justice Elena Kagan sprinkled quotes and allusions to Spider-Man into the court’s decision, using unusually wry language to leaven the ruling about a patent for “web-slinging fun”.
  • (14) The relative biological value of thiamin in leavened bread (whole wheat and thiamin-restored white) and thiamin mononitrate was examined by using thiamin-deficient rats as the test model.
  • (15) And God and the church who live in our cities want to be leaven in the dough, and relate to everyone, to stand at everyone’s side.” It was a message crafted for a city not famous for compassion but recognised as open, tolerant and dynamic.
  • (16) To study the biological value of kumyss leaven, experiments were made with mono-cultures contained by kumyss leaven.
  • (17) The accounts, in my view at least, are not sufficiently sifted and leavened and tempered by time and distance.
  • (18) These are admittedly extravagant additions and the leavened dough crust requires a little effort, too, but if this pudding didn't merit the work I'd be the first to forsake it.
  • (19) Although fructooligosaccharide inhibited the dough leavening ability of YOY920, white bread containing fructooligosaccharide could be produced in the defined dough formula using the new strain.
  • (20) Pitch Strenuous workouts leavened by lots of cheeky-chappie banter.

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