Naslov
Effect of high intensity ultrasound extraction on polyphenols recovery from rosemary leaves

Autori
Buratović, Andrea ; Marjanović, Ivona ; Matanović, Angela ; Moslavac, Leonina ; Dujmić, Filip ; Brnčić, Mladen ; Ninčević Grassino, Antonela

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

Izvornik
BOOK OF ABSTRACT 9th International CONGRESS of Food Technologists, Biotechnologists and Nutritionists / Kovačević Ganić, Karin - Zagreb : Hrvatsko društvo prehrambenih tehnologa, biotehnologa i nutricionista, 2018, 126-126

ISBN
978-953-99725-7-6

Skup
9th International Congress of Food Technologists, Biotechnologists and Nutritionist

Mjesto i datum
Zagreb, Hrvatska, 03.10.2018. - 06.10.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Eco-friendly anticorrosion substances ; Polyphenols ; Rosemary ; Ultrasound assisted extraction
(eco-friendly anticorrosion substances ; polyphenols ; rosemary ; ultrasound assisted extraction)

Sažetak
Polyphenols as active component of plant materials relevant for maintaining balance in human organism, besides antioxidants, also possessed anticorrosive properties. Due to theirs capability of adsorption on metals and metal alloys, they occupied important place in investigations of anticorrosion activity. Therefore, in this work the polyphenols from rosemary leaves were isolated with aim to be subsequently evaluated as potential eco-friendly anticorrosion substances. The extraction of dried and milled rosemary leaves was performed by ultrasound assisted extraction, applying time of 3, 6, and 9 min, amplitude of 60, 80 and 100 % and 30 and 70 % (v/v) ethanol and acetone. For comparison purpose, the extraction by refluxing for 1.5 and 3 h was also applied. The obtained extracts were evaluated in terms of colour and total phenols and flavonoids, determined by Hunter colorimeter and UV/Vis spectrophotometry, respectively. Due to the fact that results indicated that the highest recovery of total phenols and flavonoids is obtained using 70 % ethanol and acetone, during 9 min of extraction, at 100 % amplitude, these extracts will be further utilised for examination of its anticorrosive properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Prehrambena tehnologija

POVEZANOST RADA