Pregled bibliografske jedinice broj: 1226280
Influence of solvent and material proportion during microwave-assisted extraction of Dictoyota dichotoma and Thymus vulgaris pigments
Influence of solvent and material proportion during microwave-assisted extraction of Dictoyota dichotoma and Thymus vulgaris pigments // Book of Abstracts of the 2nd International Conference on Advanced Production and Processing / Šereš, Zita (ur.).
Novi Sad: Tehnološki fakultet Univerziteta u Novom Sadu, 2022. str. 84-84 (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Influence of solvent and material proportion
during microwave-assisted extraction of Dictoyota
dichotoma and Thymus vulgaris pigments
Autori
Cegledi, Ena ; Dobrinčić, Ana ; Dobroslavić, Erika ; Repajić, Maja ; Dragović-Uzelac, Verica
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts of the 2nd International Conference on Advanced Production and Processing
/ Šereš, Zita - Novi Sad : Tehnološki fakultet Univerziteta u Novom Sadu, 2022, 84-84
ISBN
978-86-6253-160-5
Skup
2nd International Conference on Advanced Production and Processing (ICAPP 2022)
Mjesto i datum
Novi Sad, Srbija, 20.10.2022. - 22.10.2022
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Dictyota dichotoma, Thymus vulgaris, pigments, Microwave-assisted extraction
Sažetak
Dictyota dichotoma is a brown alga found in rocky littoral and sublittoral zones from the Atlantic to the western Indian Ocean. Thyme (Thymus vulgaris L.) is a Mediterranean herb that belongs to the Lamiaceae family and is known in folk medicine for its various health-promoting properties. Both D. dichotoma and T. vulgaris contain a variety of biologically active compounds, which include pigments. Pigments, especially chlorophylls and carotenoids, have been the subject of numerous studies due to their potential and utilization for commercial and industrial purposes. They are well known for their industrial applications as food colorants and antioxidants, and have beneficial effects on human health. In order to increase extraction efficiency and to eliminate degradation of the target compounds, novel extraction techniques such as Microwave-assisted extraction (MAE)have been employed. The type of the solvent and the ratio of material in the extraction mixture are important parameters for obtaining higher concentrations of pigments. In this study, MAE was used to isolate pigments from D. dichotoma and leaves of T. vulgaris. The content of ethanol in the aqueous mixture (30, 50, 70 and 96%) and sample:solvent ratio (1:10, 1:20 and 1:30) were varied, while other extraction parameters (temperature 60 °C ; microwave power 800 W ; irradiation time 10 min) were kept constant. The content of chlorophylls, carotenoids and total pigments in the extracts was determined spectrophotometrically. Both sources of variation studied had a significant effect on all evaluated pigments. The highest levels of chlorophylls (3.33 mg/g), carotenoids (1.12 mg/g) and total pigments (4.45 mg/g) in the algal extract were obtained using 96% ethanol and a ratio of 1:30. The same conditions were equally effective for thyme extract, where the highest content of total pigments and chlorophylls was 0.46 and 0.40 mg/g, respectively. However, the highest content of carotenoids (0.06 mg/g) in thyme extract was obtained using 30% ethanol and a ratio of 1:30. Algae contained more pigments when compared to thyme, making them an important subject of future research on pigments isolation. The results of this study also confirm the importance of developing optimal isolation conditions that lead to the most effective recovery of pigments.
Izvorni jezik
Engleski
Znanstvena područja
Prehrambena tehnologija
POVEZANOST RADA
Projekti:
--KK.01.1.1.04.0093 - Bioaktivne molekule ljekovitog bilja kao prirodni antioksidansi, mikrobiocidi i konzervansi (Dragović-Uzelac, Verica) ( CroRIS)
Ustanove:
Prehrambeno-biotehnološki fakultet, Zagreb
Profili:
Ana Dobrinčić
(autor)
Maja Repajić
(autor)
Ena Cegledi
(autor)
Erika Dobroslavić
(autor)
Verica Dragović-Uzelac
(autor)