AI Article Synopsis
- The study used ohmic heating to extract phenolic compounds from rambutan peel, comparing deionized water and ethanol at different concentrations over varying times.
- The research found significant differences in yields, phenolic and flavonoid content, and antioxidant activities between the water and ethanol extracts.
- Fortified bread made with the extract demonstrated enhanced nutritional qualities, improved texture, antifungal properties, and a longer shelf life.
Article Abstract
This study employed the principles of electrothermal process using ohmic heating (OH) to extract phenolic compounds from rambutan peel. Deionized water and ethanol at different concentrations (50% and 70%) were used as electrical-transmission medium at different holding times (15, 30 and 60 min). The result showed significant difference (p ≤ 0.05) between the water and ethanol-based extracts in terms of yield, total phenolic, flavonoid contents and antioxidant activities. The main compounds such as gallic acid, corilagin, geraniin and ellagic acid were identified in the peel. Bread fortified with the extract showed better phenolic content and antioxidant activities, with 15 µg/mL fortification level having excellent texture properties. Interestingly, fortified breads showed excellent antifungal activity, thereby extended the shelf life of the bread crumb. The efficient ohmic heating extraction technique and proper formulation of rambutan peel extract in food, could serves as vital approach for high-quality products development with longer shelf life.
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| http://dx.doi.org/10.1016/j.foodchem.2022.132332 | DOI Listing |
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Article Synopsis
- Food proteins can conduct electricity under a Moderate Electric Field (MEF), which generates internal heat and triggers electrochemical reactions that affect protein aggregation.
- The study specifically examined how MEF impacts the formation of β-Lactoglobulin amyloid fibril aggregates (AFA) using whey protein isolate, revealing that MEF extends the initial lag phase and alters the dynamics of nucleation and fibril growth compared to traditional heating.
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