Issue: Số 21 - Tháng 9 - 2022Hóa học - Công nghệ thực phẩm
Determining the antioxidant and antibacterial activities on foodborne pathogens of anthocyanin-rich extracts from purple sweet potato (Ipomoea batatas (L.) Lam)
Published: August 1, 2026
Abstract
Antioxidants from plants are mainly polyphenols, flavonoids, carotenoids, and vitamins. Extracts from plants could be potential natural sources of antioxidants, anti-inflammatories, and antimicrobial agents which can be used as a natural active pharmaceutical ingredient in functional food and nutraceutical products. This study is to determine the antioxidant and antibacterial activities on foodborne pathogens of anthocyanin-rich extracts including purple sweet potato extract and powder. The study’s results show that the extract and powder of purple sweet potato with the anthocyanin content of 1,642 mg/L and 770 mg/L, respectively, has the DPPH antioxidant activities of 12.25 (µmol TE/g) and 10.88 (µmol TE/g), respectively. The extract and powder of purple sweet potato exhibit antimicrobial activity against foodborne pathogens as Staphylococcus aureus and Escherichia coli at anthocyanin content of 100 and 200 mg/L.
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