دورية أكاديمية
Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves
| العنوان: | Pressurized Hot Water Extraction and Bio-Hydrogels Formulation with Aristotelia chilensis [Mol.] Stuntz Leaves |
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| المؤلفون: | Audrey Bianchi, Pamela R. Rivera-Tovar, Vanesa Sanz, Tania Ferreira-Anta, María Dolores Torres, José Ricardo Pérez-Correa, Herminia Domínguez |
| المصدر: | Molecules, Vol 26, Iss 21, p 6402 (2021) |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Organic chemistry |
| مصطلحات موضوعية: | maqui, phenolic compounds, microwave, heating methods, gelling agent, rheology, Organic chemistry, QD241-441 |
| الوصف: | Aristotelia chilensis is a plant rich in phenolics and other bioactive compounds. Their leaves are discarded as waste in the maqui berry industry. A new application of these wastes is intended by the recovery of bioactive compounds using pressurized hot water extraction with conventional or microwave heating. Both technologies have been selected for their green character regarding the type of solvent and the high efficiency in shorter operation times. Extractions were performed in the temperature range 140–200 °C with a solid/liquid ratio of 1:15 (w:w). The extracts’ total phenolic content, antioxidant capacity, and saccharides content obtained with both heating methods were measured. Additionally, the thermo-rheological properties of the gelling matrix enriched with these extracts were analyzed. Optimum conditions for lyophilized extracts were found with conventional heating, at 140 °C and 20 min extraction; 250.0 mg GAE/g dry extract and 1321.5 mg Trolox/g dry extract. Close to optimum performance was achieved with microwave heating in a fraction of the time (5 min) at 160 °C (extraction), yielding extracts with 231.9 mg GAE/g dry extract of total phenolics and antiradical capacity equivalent to 1176.3 mg Trolox/g dry extract. Slightly higher antioxidant values were identified for spray-dried extracts (between 5% for phenolic content and 2.5% for antioxidant capacity). The extracts obtained with both heating methods at 200 °C contained more than 20% oligosaccharides, primarily glucose. All the formulated gelling matrices enriched with the obtained extracts displayed intermediate gel strength properties. The tested technologies efficiently recovered highly active antioxidant extracts, rich in polyphenolics, and valuable for formulating gelling matrices with potential applicability in foods and other products. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1420-3049 78804493 |
| Relation: | https://www.mdpi.com/1420-3049/26/21/6402; https://doaj.org/toc/1420-3049 |
| DOI: | 10.3390/molecules26216402 |
| URL الوصول: | https://doaj.org/article/287a30ce788044939e9d3697a9da3901 |
| رقم الأكسشن: | edsdoj.287a30ce788044939e9d3697a9da3901 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14203049 78804493 |
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| DOI: | 10.3390/molecules26216402 |