Naslov
Optimization of the Spray Drying Process of Grape Pomace Extract

Autori
Perković, Gabriela ; Martinović, Josipa ; Šelo, Gordana ; Tišma, Marina ; Bucić-Kojić, Ana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Conference 19th Ružička days “TODAY SCIENCE – TOMORROW INDUSTRY” Book of Abstarcts / Babić, Jurislav - : Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku ; Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022, 106-106

Skup
19. Ružičkini dani "Danas znanost - sutra industrija"

Mjesto i datum
Vukovar, Hrvatska, 21.09.2022. - 23.09.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
grape pomace extract, phenolic compounds, response surface methodology, sodium alginate, spray drying

Sažetak
Spray drying is one of the most commonly used encapsulation techniques in the food industry. By using coating material, various active ingredients are protected by the encapsulation process. The aim of this study was to find optimal spray drying conditions to achieve maximum encapsulation efficiency and protection of phenolic compounds from liquid grape pomace extract when 1% sodium alginate is used as coating. The liquid extract was prepared under the previously determined optimal conditions for solid-liquid extraction (temperature: 80 °C, time: 120 min, liquid/solid ratio: 40 mL/g, shaking bath: 200 rpm). A Box- Behnken design was used to investigate the influence of drying conditions such as air inlet temperature (160-200 °C), feed flow rate (4-8 mL/min), and volume of added liquid pomace extract (50-150 mL) and their interaction on the phenolic content of the grape pomace powder. The encapsulation efficiency was more than 56% in all experiments performed. Optimal conditions for spray drying were established, such as an air inlet temperature of 180 °C, a feed flow rate of 6 mL/min, and a volume of 150 mL of liquid pomace extract. Under these conditions, the predicted value for the yield of total phenolic compounds was 30.50 mg/gpowder.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA