ArticleFoods (Basel, Switzerland)2025
Optimization of Anthocyanin Extraction from Purple Sweet Potato Peel (
Article in Foods (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Effect of encapsulated purple sweet potato (Ipomoea batatas L.) peel extract on fresh goat cheese: quality and polyphenolic and color stability during refrigerated storage.Journal of the science of food and agriculture · 2026Article
- Green ultrasound-assisted extraction, purification, characterization and stability kinetics of anthocyanins fromFood chemistry: X · 2026Article
- Isolation, identification and quantification of phenolic acids, flavonoids and anthocyanins based on different particle fractions of purple-fleshed sweet potato flour for utilization as industrial applications.Food chemistry: X · 2026Article
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5 authors.
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Abstract
Sweet potato is a valuable root due to its nutritional benefits, health-promoting properties, and technological applications. The peel, often discarded during food processing, can be employed in the food industry, supporting a circular economy. Purple sweet potato peel (PSPP) is rich in anthocyanins, which can be used as natural colourants and antioxidants. Optimising their extraction can enhance yield and reduce costs. The current work aimed to optimize anthocyanin and antioxidant recovery from PSPP using a Box-Behnken design and sonotrode ultrasound-assisted extraction (sonotrode-UAE). Three independent variables were analysed: extraction time (2-6 min), ethanol concentration (35-85%), and liquid-to-solid ratio (10-30 mL/g). The dependent variables included total monomeric anthocyanin content (TMAC), individual anthocyanins, and antioxidant activity. TMAC in 15 extracts ranged from 0.16 to 2.66 mg/g PSPP. Peonidin-3-caffeoyl-p-hydroxybenzoyl sophoroside-5-glucoside was the predominant anthocyanin. Among four antioxidant assays, Ferric-reducing antioxidant power (FRAP) showed the highest value. Ethanol concentration significantly influenced anthocyanin and antioxidant recovery (
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