Application of ultra-high pressure homogenization (UHPH) at different stages of wine production
Visualitza/Obre
Data de publicació
2023-12-06ISSN
2117-4458
Resum
Ultra-High Pressure Homogenization (UHPH) is an emerging, efficient and fast technology that can
be applied at different stages in winemaking in order to reduce or avoid the use of sulphites or other
antimicrobial and antioxidant treatments. During 2022 vintage, four batches of must of three different white
cultivars (Vitis vinifera L.) were processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC and
their effectiveness was compared with control batches (without SO2 addition) and musts that were sulphited
with 60 mg/L of total SO2. A complete inactivation of yeasts and bacteria was achieved when grape juices were
processed by UHPH, reaching up to 7 log of reduction in yeasts, 4.6 log for acetic acid bacteria and 4.3 log for
lactic acid bacteria. All UHPH musts remained stable from a microbiological point of view for more than 8
months stored at 4 ºC in aseptic containers. Results showed that when antioxidant activity, colour intensity and
total phenol index were measured, UHPH can be considered a protective technique, with a similar action to that
of adding SO2. Furthermore, PPO enzymatic activity was completely inactivated in UHPH and sulphited musts.
When a red wine contaminated by Brettanomyces was treated by UHPH at 300 MPa and Ti = 17 ºC, a 6.6 log
reduction was obtained for this spoilage microorganism and no increase of volatile phenols were detected after
2 months.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
663/664 - Aliments i nutrició. Enologia. Olis. Greixos
Pàgines
6
Publicat per
EDP Sciences
Publicat a
BIO Web of Conferences
Citació
Puig-Pujol, Anna, Gemma Roca-Domènech, Joan-Miquel Quevedo, and Antonio-José Trujillo. 2023. “Application of Ultra-high Pressure Homogenization (UHPH) at Different Stages of Wine Production.” BIO Web of Conferences 68: 02025. doi: 10.1051/bioconf/20236802025
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