Title :

Optimizing the Extraction of Bioactive Compounds (Polyphenols, Lipids, and Alpha-Tocopherol) from Almond Okara to Unlock Its Potential as Functional Food.

Author(s) :

Taha, Mariam [Auteur]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
Dimitrov, Krasimir [Auteur]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
Samaillie, Jennifer [Auteur]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
Caux, B. [Auteur]
Sahpaz, Sevser [Auteur]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158
Blanchemain, Nicolas [Auteur]
Advanced Drug Delivery Systems (ADDS) - U1008
West, C. [Auteur]
Riviere, Celine [Auteur]
BioEcoAgro - UMR transfrontalière INRAe - UMRT1158

Journal title :

Foods

Abbreviated title :

Foods

Volume number :

13

Pages :

2828

Publisher :

MDPI

Publication date :

2024-10-14

ISSN :

2304-8158

English keyword(s) :

almond milk by-product
bioactive compounds
solid-liquid extraction
polyphenols
antioxidant activity
alpha-tocopherol
triglycerides

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Almond okara, a by-product of almond milk production, is rich in bioactive components, such as polyphenols, lipids, and alpha-tocopherol, making it a valuable functional food ingredient. This work aimed to investigate its ...
Show more >Almond okara, a by-product of almond milk production, is rich in bioactive components, such as polyphenols, lipids, and alpha-tocopherol, making it a valuable functional food ingredient. This work aimed to investigate its composition while exploring two main aspects: (i) the impact of extraction time, solid-to-solvent ratio, ethanol concentration, and temperature on polyphenol recovery, and (ii) the quantification of okara’s triglycerides (TG) and alpha-tocopherol contents. The polyphenols’ optimal extraction conditions were 90 min, a 1:30 solid-to-solvent ratio (w/v), 50% ethanol, and 60 °C. These conditions achieved a total polyphenol yield of 523 mg GAE, tannin yield of 340 mg GAE, total flavonoid yield of 548 mg CE, and a total antioxidant capacity of 779 mg AAE per 100 g dry okara. The Peleg model effectively described the extraction kinetics. Additionally, TG levels, quantified by UHE/LPSFC-APCI-MS, in okara were comparable to those in almonds, and alpha-tocopherol levels, quantified by LC-UV, were 14,400 µg/100 g in almonds and 15,600 µg/100 g in okara. These findings highlight the potential of okara as a valuable resource, with a straightforward, scalable, and cost-effective solid-liquid extraction (SLE) method for polyphenols and a supercritical fluid extraction method for TG, for use in the functional food, nutraceutical, and cosmetic industries.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
Inserm
CHU Lille

Collections :

• Advanced Drug Delivery Systems (ADDS) - U1008

Submission date :

2024-11-28T22:00:25Z
2025-01-08T11:02:04Z