Naslov
Effect of Microwave-Assisted Extraction on the Recovery of Polyphenols from Tomato Waste
(Effect of microwave-assisted extraction on the recovery of polyphenols from tomato waste)

Autori
Tranfić Bakić, Marina ; Pedisić, Sandra ; Zorić, Zoran ; Dragović-Uzelac, Verica ; Ninčević Grassino, Antonela

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

Izvornik
19th Ružička Days „Today Science - Tomorrow Industry“ / Babić, Jurislav ; Lauš, Ivana - Osijek : Zagreb : Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2022, 109-109

Skup
19th Ružička Days „Today Science - Tomorrow Industry“

Mjesto i datum
Vukovar, Hrvatska, 21.09.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Tomato Peel Waste ; Microwaves-Assisted Extraction ; Polyphenols ; HPLC-DAD
(tomato peel waste ; microwaves-assisted extraction ; polyphenols ; HPLC-DAD)

Sažetak
The edible fruit of the tomato (Solanum lycopersicum) is one of the most widely produced and consumed vegetables in the world, either fresh or processed in the form of canned tomatoes, sauce, juice, ketchup, and soup. Industrial processing of tomatoes generates significant amounts of waste, consisting mainly of tomato peels and seeds, but also leaves and stems. The management of by-products from tomato processing is an important problem for tomato processing companies, as these wastes are released into the environment. Normally, some of this waste is reused for animal feed through composting or drying. However, modern environmentally sound technologies offer more efficient strategies for recycling these by-products and reusing them as a sustainable source of various nutrients and highly biologically active compounds such as polyphenols. In this context, the present study describes the application of microwave-assisted extraction (MAE) as an innovative technique for the isolation of polyphenols from tomato peel waste. The effects of solvents, i.e. water and aqueous solution of HCl (1%, v/v), methanol (50 and 70%, v/v), with or without addition of 1% HCl and ethanol (50 and 70% v/v), temperatures (25, 55 and 90 °C) and times (5 and 10 min) were evaluated by HPLC-DAD analyses in terms of phenolic compounds recovery. Of the extraction parameters evaluated, temperatures and solvents have a significant effect on the yield of individual phenolic compounds. Different combinations of these parameters lead to the isolation of different amounts of individual phenolic compounds. Kaemferol-3-O-rutinoside (8.5 to 142.5 mg/kg), p-coumaric acid (3 to 111.5 mg/kg), and chlorogenic acid derivative (10.5 to 109 mg/kg) are found in high amounts. On the other hand, the extraction time has no significant (p > 0.05) influence on the recovery of phenolic compounds. In conclusion, HPLC-DAD analyses show that polyphenols were isolated in remarkable amounts with minimal time (5 min), using MAE as an innovative and environmentally friendly technique.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Prehrambena tehnologija

POVEZANOST RADA