Microbiology of winemaking

Bartowsky, Eveline

doi:10.1071/ma17033

Cited by 4 publications

(2 citation statements)

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“…Molecular biological methods in yeast identification can reliably determine which species are found in a given winegrowing area as well as which species apply at a certain stage of fermentation and how they affect this process. From grapes and wine, many yeast genera have been identified by molecular biological methods such: Brettanomyces, Candida, Kloeckera/Hanseniaspora, Kluzveromyces, Metschnikowia, Pichia, Saccharomyces and Zygosaccharomyces (Bartowsky, 2017).…”

Section: Introductionmentioning

confidence: 99%

Food safety and quality. Scientific proceedings

2023

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We tested 68 strains of Staphylococci, (S. aureus -29, S. epidermidis -34, S. haemolyticus -23, S. warneri -16, and S. chromogenes -6). They have been isolated from various types of mastitis. Staphylococci in milk samples were isolated from acute form (27,9 %), subacute form (10,3 %), subclinical form (25 %) and latent form (36,8 %). The most common form of mastitis in dairy cows was latent mastitis. Formation of biofilm was evaluated by results of two methods: quantitative growth on CongoRed agar (CRA) and semiquantitative growth on microtiter plates (MTP). At the significance level of α = 0.05, the dependence of biofilm formation in bacteria positive using both phenotypic methods in S. aureus, S. epidermidis and S. haemolyticus was confirmed. The positivity in S. warneri and S. chromogenes determined by both methods was random. Based on our results and found dependence in comparison both methods of biofilm detection, we can recommend the simultaneous use of these methods in ideal conditions. It should be supplemented by determining the presence of genes encoding biofilm production. Keywords production of biofil:, staphylococci m, cow´s mastitis, milk ÚVOD Tvorba biofilmu ako významný faktor virulencie pomáha baktériám vyhnúť sa imunitnej obrane hostiteľa a antimikrobiálnej terapii. V chovoch prežúvavcov má biofilm vplyv na intenzitu a pretrvávanie mastitíd spôsobených v prevažnej miere baktériami z rodu Staphylococcus spp., ktoré sú najčastejšou príčinou mastitíd u prežúvavcov (Vasiľ et al., 2017).Vzhľadom na úlohu biofilmu pri perzistencii a kolonizácii stafylokokov v epiteli mliečnej žľazy, zníženie imunologickej odpovede organizmu, rezistencie na antibiotickú liečbu a ťažkosti pri eradikácii patogénov má podrobné preskúmanie a pochopenie mechanizmu tvorby biofilmu zásadný význam pri terapii príp. prevencii zápalov mliečnej žľazy. Je všeobecne známe, že baktérie produkujúce biofilm je ťažké z mliečnej žľazy odstrániť, sú často rezistentné na antibiotickú liečbu, ktorá sa na liečbu mastitíd bežne používa (Farkašová et al., 2020).Cieľom našej práce bolo stanovenie biofilmu u stafylokokov izolovaných z mlieka mastitídnych dojníc počas jedného roka. MATERIÁL A METODIKAVyšetrované vzorky mlieka sme odobrali v priebehu jedného roka od dojníc na PD Kluknava na východe Slovenska. Odbery sme uskutočnili u dojníc v štvrťročných intervaloch (marec, jún, september december). Celkom bolo vyšetrených 120 kusov dobytka. Mlieko bolo hneď po odbere vyšetrené maštaľným NK testom na detekciu typu mastitídy (akútna, subakútna, subklinická, latentná), a následne bakteriologickou kultiváciou na 5 % krvnom agare a na špeciálnych selektívnych pôdach. Následne boli stafylokokové kmene identifikované pomocou dvoch rôznych identifikačných metód: na základe biochemických enzymatických vlastností baktérií STAPHYtest 24 s identifikačným programom TNW 7.0 (Erba-Lachema, Brno, Česká republika) s presnosťou detekcie viac ako 90,0 % a na základe stanovenia

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Section: Introductionmentioning

confidence: 99%

Food safety and quality. Scientific proceedings

2023

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“…138 Fermentation can be done in stainless steel tanks, which is popular with many white wines, inside a wooden wine barrel or inside the wine bottle itself as in the manufacture of many sparkling wines like champagne for example.The method of winemaking or actually wine fermentation is one of the most ancient human experiences as it is known since the dawn of civilisation. 139 Winemaking contains generally three categories of operations, namely, prefermentation, fermentation, and post-fermentation processes. In the case of wines made from grapes, pre-fermentation includes crushing the fruit and freeing juice.…”

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confidence: 99%

Egyptian Beverages: A Journey through Ancient to Modern Times

Raafat

Fouad

2018

International Academic Journal Faculty of Tourism and Hotel Man

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There is a strong line of continuity linking the history of Egyptian beverages since early history till our present time. The ancient Egyptians thrived on drinking beer, wine and fresh milk beside their usual water intake. Nowadays in Egypt, locally manufactured beer and wine still exist but their consumption is limited due to religious beliefs. Beverages in ancient Egypt were normally served during celebrations, funerals or banquets which is still the case. This article attempts to explore the journey of manufacturing and consuming Egyptian beverages through history with the aim of assessing the possible sustainability. It is concluded that the outcome of the manufacturing techniques of beer, wine and milk have considerably changed. The methodology used was based on observing ancient artifacts/tomb paintings in addition to reviewing compiled literature from previous studies.

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