| Title: | "Bentonite fining during fermentation reduces the dosage required and exhibits significant side-effects on phenols, free and bound aromas, and sensory quality of white wine" |
| Author(s): | Horvat I; Radeka S; Plavsa T; Lukic I; |
| Address: | "Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Porec, Croatia. Electronic address: ihorvat@iptpo.hr. Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Porec, Croatia. Electronic address: sanja@iptpo.hr. Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Porec, Croatia. Electronic address: tomislav@iptpo.hr. Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Porec, Croatia; Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetosimunska 25, 10000 Zagreb, Croatia. Electronic address: igor@iptpo.hr" |
| DOI: | 10.1016/j.foodchem.2019.01.172 |
| ISSN/ISBN: | 1873-7072 (Electronic) 0308-8146 (Linking) |
| Abstract: | "To test the effects of bentonite addition at various stages of fermentation, five Malvazija istarska white grape must vinification treatments were performed with 100?ª+g/hL of bentonite added in clear juice, at the beginning, in the middle, and at the end of fermentation, while control was fermented without bentonite. Phenols and free and bound volatile aromas were determined by HPLC-DAD and SPE-GC-MS. Wines were evaluated sensorially. Fining during fermentation reduced the total bentonite dose required, and was most effective near the end of fermentation with the reduction of 16% and 21%, depending on the protein stability test. All treated wines preserved more hydroxycinnamoyltartaric acids with respect to control. The side-effect of these treatments on varietal aromas was moderate, but enhanced the preservation of key fermentation volatiles in relation to control, and exhibited positive sensory effects. It was concluded that bentonite added during fermentation may positively affect wine quantity and quality" |
| Keywords: | "Adult *Bentonite Chromatography, High Pressure Liquid Female Fermentation Food Handling/*methods Gas Chromatography-Mass Spectrometry Humans Male Middle Aged Odorants/analysis Phenols/analysis/metabolism Protein Stability *Vitis Volatile Organic Compounds;" |
| Notes: | "MedlineHorvat, Ivana Radeka, Sanja Plavsa, Tomislav Lukic, Igor eng England 2019/02/25 Food Chem. 2019 Jul 1; 285:305-315. doi: 10.1016/j.foodchem.2019.01.172. Epub 2019 Feb 2" |
