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Influence of solvent and material proportion during microwave-assisted extraction of Dictoyota dichotoma and Thymus vulgaris pigments (CROSBI ID 726112)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Cegledi, Ena ; Dobrinčić, Ana ; Dobroslavić, Erika ; Repajić, Maja ; Dragović-Uzelac, Verica 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

Podaci o odgovornosti

Cegledi, Ena ; Dobrinčić, Ana ; Dobroslavić, Erika ; Repajić, Maja ; Dragović-Uzelac, Verica

engleski

Influence of solvent and material proportion during microwave-assisted extraction of Dictoyota dichotoma and Thymus vulgaris pigments

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.

Dictyota dichotoma, Thymus vulgaris, pigments, Microwave-assisted extraction

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Podaci o prilogu

84-84.

2022.

objavljeno

Podaci o matičnoj publikaciji

Book of Abstracts of the 2nd International Conference on Advanced Production and Processing

Šereš, Zita

Novi Sad: Tehnološki fakultet Univerziteta u Novom Sadu

978-86-6253-160-5

Podaci o skupu

2nd International Conference on Advanced Production and Processing (ICAPP 2022)

poster

20.10.2022-22.10.2022

Novi Sad, Srbija

Povezanost rada

Prehrambena tehnologija