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Physicochemical Properties, Antioxidant Capacity, and Bioavailability of Laurus nobilis L. Leaf Polyphenolic Extracts Microencapsulated by Spray Drying (CROSBI ID 325234)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Dobroslavić, Erika ; Elez Garofulić, Ivona ; Zorić, Zoran ; Pedisić, Sandra ; Roje, Marin ; Dragović- Uzelac, Verica Physicochemical Properties, Antioxidant Capacity, and Bioavailability of Laurus nobilis L. Leaf Polyphenolic Extracts Microencapsulated by Spray Drying // Foods, 12 (2023), 9; 1923, 18. doi: 10.3390/foods12091923

Podaci o odgovornosti

Dobroslavić, Erika ; Elez Garofulić, Ivona ; Zorić, Zoran ; Pedisić, Sandra ; Roje, Marin ; Dragović- Uzelac, Verica

engleski

Physicochemical Properties, Antioxidant Capacity, and Bioavailability of Laurus nobilis L. Leaf Polyphenolic Extracts Microencapsulated by Spray Drying

Laurel (Laurus nobilis L.) leaves are a rich source of polyphenols with the potential for use in functional foods, where the main obstacle is their low stability and bioavailability, which can be improved by spray drying (SD). This research examined the influence of SD parameters, including inlet temperature (120, 150, and 180 °C), carrier type (β-cyclodextrin (β-CD) ; β-CD + maltodextrin (MD) 50:50 ; β-CD + gum arabic (GA) 50:50), and sample:carrier ratio (1:1, 1:2 and 1:3) on the physicochemical properties, encapsulation efficiency, polyphenolic profile, antioxidant capacity and bioaccessibility of laurel leaf polyphenols. The highest encapsulation efficiency was achieved at a sample:carrier ratio 1:2 and the temperature of 180 °C by using either of the applied carriers. However, the application of β-CD + MD 50:50 ensured optimal solubility (55.10%), hygroscopicity (15.32%), and antioxidant capacity (ORAC 157.92 μmol Trolox equivalents per g of powder), while optimal moisture content (3.22%) was determined only by temperature, demanding conditions above 150 °C. A total of 29 polyphenols (dominantly flavonols) were identified in the obtained powders. SD encapsulation increased the bioaccessibility of laurel flavonols in comparison to the non-encapsulated extract by ~50% in the gastric and ~10% in the intestinal phase, especially for those powders produced with carrier mixtures.

laurel ; polyphenols ; microencapsulation ; spray drying ; bioaccessibility ; antioxidant activity

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Podaci o izdanju

12 (9)

2023.

1923

18

objavljeno

2304-8158

10.3390/foods12091923

Povezanost rada

Prehrambena tehnologija

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