Prospective use of fruit byproducts in Colombia according to their antioxidant capacity

Abstract

Currently, the use of agro-industrial waste represents a viable alternative for obtaining valuable compounds that, in the case of biorefineries, is an opportunity for improvement. In this context, the aim of our study was to determine the flavonoid content and the antioxidant capacity of 30 byproducts from fruit processing in Colombia and propose possible applications. We analyzed the antioxidant capacity of the ethanolic extracts from each byproduct using the ferric reducing antioxidant power (FRAP) and the reducing power of antioxidant activity (RPAA) assays, as well as the oxygen radical absorbance capacity (ORAC) test. We found that tree tomato peels and stem and peach peels had a high flavonoid content, with values greater than 8,271.82 ± 702.70 μg quercetin per gram of dry sample. We also found that mango (22,676.57 ± 759.71 μg TE1/g Sdb, 3,692.38 ± 92.67 μg GAE/g Sdb), soursop (22,117.13 ± 754.94 μg TE1/g Sdb, 4,858.79 ± 156.71 μg GAE/g Sdb, 14,713.39 ± 757.95 μg TE2/g Sdb), grape (17,027.85 ± 765.11 μg TE1/g Sdb, 13,395.15 ± 659.31 μg TE2/g Sdb), peach peels (17,910.21 ± 1,424.33 μg TE2/g Sdb) and seeds (4,316.46 ± 112.00 μg GAE/g Sdb, 20,093.32 ± 1,317.93 μg TE2/g Sdb), and grape stalk (3,552.26 ± 31.63 μg GAE/g Sdb) showed a high antioxidant capacity in the different tests performed. Our results demonstrate that fruit byproducts have potential use in the pharmaceutical, ood, and cosmetic industry due to heir flavonoids content and their high antioxidant capacity.

Bibliometric Analysis from Colombia's Coffee Region Natural Products derived from plants: Insights from the Literature

“…In terms of the food industry, natural antioxidants are used as preservatives to prevent food oxidation, extending shelf life and maintaining nutritional quality. 26 Similarly, antibacterial activities are relevant in medicine as alternatives to current antibiotics, combating bacterial infections that are resistant to conventional treatments. Additionally, they can be used as biopesticides, offering a safer and more environmentally friendly alternative to traditional chemical pesticides, helping to control bacterial diseases in crops.…”

Quercetin: A Bioactive Compound Imparting Cardiovascular and Neuroprotective Benefits: Scope for Exploring Fresh Produce, Their Wastes, and By-Products

“…The food waste/byproducts containing quercetin by the amount reported in recent years are summarized in Table 3. Tomato peels 9.97 ± 0.27 [326] Berry peel 0.0001 ± 0.00 [327] Lotus byproducts (Only detected not quantified) [328] Coppery onion outer dry layers 52.84 ± 0.12 [329] Red grape pomace 0.05 ± 0.00 [330] Cacao beans pod husk 0.6018 ± 0.0112 [331] Grape pomace 0.03189 ± 0.00277 [332] Grape pomace 0.24923 ± 0.00114 [333] Onion waste (A case study of industrial scale, output yield is in Kgs) [334] Black currant residue with quercetin glycoside (based on the place of cultivation) 34.6 ± 5.7 [335] * The units presented are converted to (mg/g) as compared to different units reported in the references.…”