Potentiometric Titration in Two-phase Systems. Determination of Bitter Acids in Hops.
نویسندگان
چکیده
منابع مشابه
synthesis of platinum nanostructures in two phase system
چکیده پلاتین، فلزی نجیب، پایدار و گران قیمت با خاصیت کاتالیزوری زیاد است که کاربرد های صنعتی فراوانی دارد. کمپلکس های پلاتین(ii) به عنوان دارو های ضد سرطان شناخته شدند و در شیمی درمانی بیماران سرطانی کاربرد دارند. خاصیت کاتالیزوری و عملکرد گزینشی پلاتین مستقیماً به اندازه و- شکل ماده ی پلاتینی بستگی دارد. بعضی از نانو ذرات فلزی در سطح مشترک مایع- مایع سنتز شده اند، اما نانو ساختار های پلاتین ب...
A Student-Designed Potentiometric Titration: Quantitative Determination of Iron(II) by Caro's Acid Titration
Oxidation–reduction titrations and potentiometric methods provide a convenient experimental means to quantitatively determine compositions of unknown mixtures containing oxidizable/reducible species. Over the past decade, numerous titration methods have appeared in this Journal (1–6) and in standard laboratory manuals (7–10) involving common titrants such as potassium dichromate, iodine, potass...
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This study on potentiometric titration of polyprotic acids and bases using a glass electrode is a continuation of our paper (Maslarska V., Tencheva J., Budevsky O., Anal. Bioanal. Chem., 375, 217 (2003)) [1]. The derived earlier theoretical equation was found to fit well the experimental data. A commercial software was applied and main attention was paid to the analytical result rather than to ...
متن کاملHPLC/MS/MS Analysis of Bitter Acids in Hops and Beer
consumed beverages in the world. Its annual worldwide production, measured in hundreds of millions of hectoliters, is a testimony to its popularity. While there are many different types of beer, all share one underlying characteristic taste, bitterness. Beer derives its bitter taste from bitter acids present in hops that undergo isomerization during the brewing process. In contrast to old tradi...
متن کاملPotentiometric titration and conformational change in pepsinogen.
Potentiometric titrations of pepsinogen as functions of ionic strength and temperature were studied. It was found that the ionic strength has a minor effect on the titration behavior of the protein. The maximum values of the buffering capacity in the pH range of 6.0 to 9.0 were found at pH values corresponding to those at which a conformational change of the protein occurs as determined by opti...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1948
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.02-0583