ISSN 2308-4057 (Печать),
ISSN 2310-9599 (Онлайн)

BEER QUALITY ASSURANCE BY CONTROLLING WORT POLYPHENOLIC CONTENT WITH ADSORPTION METHOD

Аннотация
This research explores feasibility of adsorption method used for regulating polypenols content in wort with a view of improving beer quality. It examines adsorption of polyphenols (quercetin, gallic acid, rutin) from pure substance solutions, their mixtures and beer wort treated by sorbents that differ by origin, making, structure and surface chemical composition. The work determines patterns and specific features of polyphenols adsorption with activated carbons. To describe adsorption mechanism more precisely, we specified structure, surface chemical condition, and calculated adsorption parameters using equations of Langmuir, Freundlich and Dubinin-Radushkevich, and the multilayer adsorption theory (BET model). It is demonstrated that polyphenols adsorption mechanism depends on carbon characteristics and is of physical nature that reveals itself in dispersion interaction in micropores and in specific one with oxygen-containing functional group (OFG) on carbon surface. Polyphenol competitive adsorption in mixture and wort recognized. At polyphenols adsorption from model solutions and wort, carbon sorbents are identified to share sufficiently close sorption characteristics. We performed comparative evaluation of quality characteristics of beer produced from activated carbons treated and untreated worts. It is shown that beer samples produced from unhopped wort filtered through semi-coke adsorption, meet regulatory standards requirements of safety by organoleptic, physical and chemical indicators. Moreover, beer obtained from semi-coke treated wort exceeds control sample in terms of organoleptic and stability ensuring indicators.
Ключевые слова
gallic acid, rutin, quercetin, wort, carbon sorbents, adsorption
СПИСОК ЛИТЕРАТУРЫ
  1. www.baltika.ru (accessed 15 February 2016). (In Russian).
  2. Khorunzhina S.I. Khimiya solodovennogo i pivovarennogo proizvodstv [Chemistry of malt processing and brewing]. Kemerovo: KemIFST Publ., 2006. 124 p.
  3. Kovalevskiy K.A. Tekhnologiya brodil'nykh proizvodstv [Fermentation industry]. Kiev: Firma “INKOS” Publ., 2004. 340 p.
  4. Pokrovskaya N.V. and Kadaner Ya.D. Biologicheskaya i kolloidnaya stoykost' piva [Biological and colloidal stability of beer]. Moscow: Pishchevaya promyshlennost' Publ., 1978. 272 p.
  5. Meledina T.V. Syr'e i vspomogatel'nye materialy v pivovarenii [Raw and auxiliary materials in brewing]. St. Petersburg: “Professija” Publ., 2003. 304 p.
  6. Kudrinskaya V.A., Dmitrienko S.G. and Zolotov Yu.A. Synthesis and research of polymers sorption properties with quercetin molecular imprintments. Moscow State University Vestnik. Series 2. Chemistry, 2009, vol. 50, no. 3, pp. 156-163. (In Russian).
  7. Temerdashev Z.A., Milevskaya V.V., Kiseleva N.V., Vernikovskaya N.A. and Korobkov V.A. Sorption chromatographic definition of gallic and caffeic acids, rutin and epicatechin in remedial plants. Analytics and control, 2013, vol.17, no. 2, pp. 211-281. (In Russian).
  8. Ermolaeva G.A. Spravochnik rabotnika laboratorii pivovarennogo predpriyatiya [Brewery laboratory worker handbook]. St. Petersburg: “Professija” Publ., 2004. 536 p.
  9. Krasnova T.A., Timoshchuk I.V. and Kirsanov M.P. The adsorption kinetics of organic compound mixtures from aqueous solutions by activated carbons. Water: chemistry and ecology, 2014, no. 7, pp. 69 - 74. (In Russian).
  10. Borisenko T.N. and Nushtaeva T.I. Metody issledovaniya kachestva syr'ya, polufabrikatov i gotovoy produktsii brodil'nykh proizvodstv. Chast' 3. Tekhnologiya piva i bezalkogol'nykh napitkov [Methods of quality of raw materials research, semi-finished and finished products fermentation industries. Part 3. Technology and beer soft drinks]. Kemerovo: KemIFST Publ., 2003. 104 p.
  11. GOST 31711-2012. Pivo. Obshchie tekhnicheskie usloviya [State Standard 31711-2012. Beer. General technological conditions]. Moscow: Standartinform Publ., 2013. 11 p.
  12. TR TS 021/2011. Tekhnicheskiy reglament Tamozhennogo soyuza «O bezopasnosti pishchevoy produktsii» [TR CU 021/2011. Technical Regulations of the Customs Union “On the safety of food production”]. Moscow, 2011. 234 p.
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