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Dictionary » Q » Quench

Quench

quench

1. To extinguish; to overwhelm; to make an end of; said of flame and fire, of things burning, and figuratively of sensations and emotions; as, to quench flame; to quench a candle; to quench thirst, love, hate, etc. Ere our blood shall quench that fire. (Shak) The supposition of the lady's death Will quench the wonder of her infamy. (Shak)

2. To cool suddenly, as heated steel, in tempering.

Synonym: To extinguish, still, stifle, allay, cool, check.

Origin: OE. Quenchen, AS. Cwencan in acwencan, to extinguish utterly, causative of cwincan, acwincan, to decrease, disappear; cf. AS. Cwinan, acwinan, to waste or dwindle away.


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Re: Dose response curves

... whichever is easier. This will be the initial velocity of the reaction in micrmole/min or some such unit. I’m assuming you have a way to either quench the reaction after 1 min, or you’re continuously monitoring the absorbance or fluorescence over time, and you can just “take” the value at 1 ...

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by blcr11
Thu Aug 28, 2008 4:50 pm
 
Forum: Molecular Biology
Topic: Dose response curves
Replies: 1
Views: 665

1 MOLAR histidine?

... method for polyamine detection using 4-fluoro-3-nitrobenzotrifluoride (FNBT) (Spragg and Hutchings, 1983). The published protocol tells you to quench the reaction with 1 M histidine in 1 M sodium bicarbonate. At first I thought this must be a typo because it's so far above the nominal solubility ...

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by mediocritus
Sun Apr 20, 2008 10:37 pm
 
Forum: Molecular Biology
Topic: 1 MOLAR histidine?
Replies: 6
Views: 626

poly(dεA)

... I haven’t seen any good explanation as to why the fluorescence increases on binding. My guess is that adjacent adducts (or other bases, even) quench the intrinsic fluorescence of the adduct. Binding to protein disrupts the interbase interactions and thus enhances the fluorescence by removing ...

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by blcr11
Mon Sep 10, 2007 5:03 pm
 
Forum: Molecular Biology
Topic: poly(dεA)
Replies: 1
Views: 507

Milk Easing the "hotness" of Spicy Food

... damage the eyes. Because capsaicins are not water-soluble, drinking milk (with milk fat and proteins) rather than water is a more effective way to quench the fire caused by hot peppers.

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by b_d_41501
Thu Jun 09, 2005 2:11 pm
 
Forum: Human Biology
Topic: Milk Easing the "hotness" of Spicy Food
Replies: 10
Views: 10157


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