Relevant bibliographies by topics / Polyfenoles

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Academic literature on the topic 'Polyfenoles'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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Journal articles on the topic "Polyfenoles"

Supriyo, Edy, and Isti Pudjihastuti. "Konsentrasi Polyfenol pada Teh Hitam Celup Komersial Produksi Perkebunan Teh di Jawa Tengah." METANA 17, no. 2 (2021): 55–60. http://dx.doi.org/10.14710/metana.v17i2.41776.

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Teh merupakan minuman yang dihasilkan dari pucuk daun tanaman Camellia sinensis yang tumbuh di pegunungan pada ketinggian 600–2500 m dpl. Teh hitam merupakan jenis teh yang banyak dikonsumsi masyarakat Indonesia. Teh ini diproduksi dengan cara fermentasi melalui proses oksidasi enzimatis katekin oleh polifenol oksidase. Teh hitam yang dikemas dalam bentuk the celup banyak digemari konsumen. Tujuan dari penelitian ini mengetahui konsentrasi polyfenol dalam teh hitam celup komersial. Sampel teh hitam celup komersial dengan merk dagang TP, TDT, TB, TL, TD, dan TM diproduksi oleh enam perkebunan t

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BOUŠOVÁ, P., J. ŠROGL, J. FAMĚRA, and K. KOSAŘ. "Study of Solubility of Malt Polyphenols." Kvasny Prumysl 44, no. 2 (1998): 43–45. http://dx.doi.org/10.18832/kp1998004.

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MIKYŠKA, Alexandr, та Marie JURKOVÁ. "Summary Evaluation of bitter acids and polyphenols content in Czech hops harvest in 2013 - I: Contents of α- and β-Bitter Acids." Kvasny Prumysl 60, № 7-8 (2014): 191–97. http://dx.doi.org/10.18832/kp2014019.

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ZLOCH, Z. "Biological activity of plant polyphenols in beverages." Kvasny Prumysl 40, no. 9 (1994): 266–70. http://dx.doi.org/10.18832/kp1994018.

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Syukur, Sumaryati, Zozy Aneloi N, and Femilya Putri. "TRANSFORMASI Agrobakterium rhizogenese DAN INDUKSI AKAR RAMBUT PADA TANAMAN KAKAO (Theobroma cacao) UNTUK PRODUKSI SENYAWA ANTIOKSIDAN SECARA INVITRO." Jurnal Riset Kimia 2, no. 2 (2015): 156. http://dx.doi.org/10.25077/jrk.v2i2.156.

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ABSTRACT Transformation of Ri T-DNA Plasmid Agrobacterium rhizogenese to varieties Theobroma cacao variety TSH which is growing in west Sumatra and induction of hairy roots in order to produce bioflavonoid antioxidant compounds such as, catechin, polyfenol, or monomer and oligomer flavones was successfully obtained. Three spesies of A.rhizogenese (A4,LBA 9457 and ATTCC 15834) originaly from LIPI was used to transform Ri T-DNA plasmid in MS medium via cacao embryo culture. The aim of this paper is to determine the affectivity and ability of the three species of bacterial above to produce hairy

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ŠAVEL, Jan. "Prooxidant and antioxidant role of reductones and polyphenols in beer." Kvasny Prumysl 50, no. 10 (2004): 291–97. http://dx.doi.org/10.18832/kp2004019.

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DVOŘÁKOVÁ, Markéta, Pavel DOSTÁLEK, and Petr HULÍN. "Analytical Methods for Determination of Polyphenols in Sweet Wort, Wort and Beer." Kvasny Prumysl 52, no. 4 (2006): 111–14. http://dx.doi.org/10.18832/kp2006010.

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DVOŘÁKOVÁ, Markéta, Pavel DOSTÁLEK, Zuzana SKULILOVÁ, Marie JURKOVÁ, Vladimír KELLNER, and Luis F. GUIDO. "Barley and malt polyphenols and their antioxidant properties." Kvasny Prumysl 56, no. 3 (2010): 160–63. http://dx.doi.org/10.18832/kp2010022.

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JELÍNEK, Lukáš, Monika DOLEČKOVÁ, Tereza HUDCOVÁ, Marcel KARABÍN та Pavel DOSTÁLEK. "Profilling of czech hop varieties by means of analyses of α- and β-bitter acids, essential oils and polyphenols." Kvasny Prumysl 57, № 7-8 (2011): 272–76. http://dx.doi.org/10.18832/kp2011031.

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LENKOV�, Marianna, Judita Bystrick�, Tom� T�th, and Miroslava HRSTKOV�. "Evaluation and comparison of the content of total polyphenols and antioxidant activity of selected species of the genus Allium." Journal of Central European Agriculture 17, no. 4 (2016): 1119–33. http://dx.doi.org/10.5513/jcea01/17.4.1820.

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Dissertations / Theses on the topic "Polyfenoles"

Haidarian, Behroz, and Christina Lidborg. "Extraktion av polyfenoler från pressrester av röda vindruvor." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20414.

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Antioxidanter är kemiska ämnen som är kapabla till att förhindra oxidation av andra molekyler. Dessa ämnen återfinns i djur- och växtriket och tycks ha en skyddande effekt på cellvävnad genom att motverka skadliga oxidativa reaktioner. Antioxidanter används bland annat industriellt som tillsater i livsmedel och andra produkter i syfte att förhindra oxidativ degradering och bibehålla näringsvärdet i livsmedel. I vindruvor återfinns höga koncentrationer av naturliga antioxidanter, främst i form av fenoliska ämnen. På grund av att vinindustrin bidrar till stora mänger avfall, främst i form av dru

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Critén, Sladjana. "POLYFENOLER, VITAMINER OCH PARODONTALA SJUKDOMAR - en systematisk litteraturstudie." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19866.

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Syftet med denna systematiska litteraturöversikt var att utreda om det finns stöd i litteraturen avseende vilken betydelse kostens innehåll av polyfenoler och vitaminer kan ha för parodontala sjukdomar. Material och metod: En sökning i PubMed gjordes i mars 2012. Sökningen begränsades till humana studier på engelska och publicerade mellan januari 1990 och mars 2012. Kriterier för inkludering var: “randomized controlled trial”, “clinical controlled trial”, “clinical trial” och “”humans. Referenslistorna i de selekterade studierna granskades för att finna ytterligare studier som kunde inklud

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Dostálová, Blanka. "Stanovení celkového obsahu bílkovin, polyfenolů a sacharidů v pivu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240548.

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This master‘s thesis deals with the analysis of 65 different beers, with a focus on finding differences between Czech tap ales, lagers Czech, Czech special beers and foreign beers. Czech beers were compared by the results of analysis among beers bearing the indication "Czech beer" and the group without this indication. The total amount of proteins, polyphenols and carbohydrates was determined using UV-VIS spectrometry. The history of brewing, the nature and types of Czech beers and protected geographical indication "Czech beer" were described. Raw materials for beer production and brewing tech

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Pařilová, Kateřina. "Studium vybraných aktivních látek v českém pivu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216475.

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The aim of this work was to study phenolics and other active compounds in 22 kinds of lager beer and especially to find some differences between Czech beer and beers made in foreign countries. In theoretical part the most useful methods for phenolic and protein analysis are discussed. Further, basic steps of brewery technology are introduced and main beer components with regard to Czech beer specificity are presented. Analysis of total phenolics, total flavonoids, antioxidant activity and most of basic technological characteristics was performed spectrophotometrically. To identification and qu

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Měřínská, Radana. "Analýza flavonoidů v pivu metodou LC-MS." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216608.

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Presented diploma thesis is focused on analysis of phenolic compounds in various types of beers. The aim of this work was to find possible differences among several types of beers and also between Czech beers and beers of foreign production. Theoretical part contains detailed description of beer technology, review of important analytical methods for determination of phenolic compounds and total antioxidant activity. The main attention is focused on instrumental technique LC/MS. In the experimental part values of total phenolics and total flavonoids and results of antioxidant status in analyzed

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Omerdic, Nermina. "Syreupptag i öl vid filtrering med kiselgur." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-82520.

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Öl är en dryck som i ökande grad framställs av mindre bryggerier. För bryggarna är ett av målen att producera öl med så lång hållbarhet och en så jämn kvalitet som det är möjligt utifrån resurser, ekonomi och engagemang. En av svårigheterna vid ölbryggning är oönskad förekomst av syre efter jäsning. Syre i produkten kan förstöra ölets karaktär och ge upphov till oönskade smakämnen. Det här projektet har handlat om att mäta koncentrationen löst syre(O2) i öl efter filtrering med kiselgur och med några olika metoder försöka minimera syreupptag under filtreringsprocessen. Detta för att säkerställ

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Jelénková, Zuzana. "Stanovení aktivních látek v medu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216227.

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This diploma thesis was focused on biologically active compounds determination. 26 samples of honey, one sample of propolis and one sample of royal jelly were analyzed. Honey were harvested in year 2006 and 2007 and bought in retail chain, special shops and directly from bee-keeper. Samples were analyzed by titration, spectrofotometry, LC/MS and RP-HPLC methods. The study was focused on analysis of antioxidants. Followed groups of antioxidants were determined: flavonoids, catechins, carotenoids, vitamins E, C, A. Authenticity of quality was determined by hydroxymethylfurfural analysis. Average

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Trčková, Marie. "Využití metody LC/MS k analýze vybraných přírodních fyziologicky aktivních látek." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216232.

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Presented work is focused on application of combined instrumental method RP-HPLC/ESI-MS in analysis of several groups of natural compounds with positive physiological activities. Especially some antioxidants were studied in commonly and abundantly consumed food. Moreover some other substances than standard compounds were observed in complex dies. In conclusion the HPLC/ESI-MS method is comparatively advantageous in phenolic analysis, while another type of ionisation would be used in case of carotenoid compound.

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Smělá, Margita. "Stanovení některých nutričních faktorů ve vybraných druzích ovoce." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216776.

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Diploma thesis is concerned with determination of some nutrion factors and vitamin C in various cultivars of apples (Pirus Malus, L.) and quinces (Cydonia oblonga, Mill.). In theoretical part there are described general characterization in selected kinds of fruits, their medically significant sunstances and utilization of these fruits. Main focus is paid to vitamin C. There are described its chemical properties and effect for human health. Various methods for determination of some nutrion factors with focus on determination of vitamin C by high-performance liquid chromatography. In experimenta

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Kurzová, Pavlína. "Izolace antibakteriálních sloučenin z kávové sedliny." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433498.

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Coffee grounds are one of the very valuable lignocellulosic wastes that have been able to be processed and used for isolated phenolic substances. Many phenolic substances isolated from lignocellulosic wastes have antimicrobial properties. Aim of this thesis is isolation phenolic substances from spent coffee grounds extract and their available antimicrobial properties. Two isolation ways were applied to receive phenolic substances from spent coffee grounds: 1) solvent extraction (hexane, 75% ethanol, 70% acetone, diethyl ether, and ethyl acetate) and 2) release of active substances by alcoholic

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Conference papers on the topic "Polyfenoles"

Bogdan-Stefan, Negreanu-Pirjol. "ANTIOXIDATIVE ACTIVITY OF INDIGEN BITTER CHERRY FRUITS EXTRACT CORELLATED WITH POLYFENOLS AND MINERALS CONTENT." In 14th SGEM GeoConference on NANO, BIO AND GREEN � TECHNOLOGIES FOR A SUSTAINABLE FUTURE. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b61/s25.035.

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