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- 저자 : Chintha Pradeepika (검색결과 1 건)
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Chintha Pradeepika,Sarkar Dipayan,Pecota Kenneth,Dogramaci Munevver,Hatterman-Valenti Harlene,Shetty Kalidas 한국원예학회 2023 Horticulture, Environment, and Biotechnology Vol.64 No.5
Sweet potato is a rich source of antioxidant phytohemicals, like β-carotene, vitamin C, anthocyanins, xanthophylls, and phenolics, which are relevant for providing dietary protections against chronic oxidative stress-associated diseases, like type 2 diabetes. However, the health protective phytochemical profi les and associated antioxidant and anti-diabetic properties of sweet potatoes vary widely between diff erent fl esh color and among cultivars. Therefore, the aim of this study was to screen aqueous and ethanol (12%) extracts of seven sweet potato cultivars with diff erent fl esh colors (white–yellow, orange, and purple) for their phenolic phytochemical-linked functional qualities. Total soluble phenolic (TSP) content, phenolic profi le, protein content, total antioxidant activity, anti-hyperglycemic function relevant α-amylase, α-glucosidase, and antihypertensive function related angiotensin-I-converting enzyme (ACE) inhibitory activities of sweet potato cultivars were determined using rapid in vitro assay models. The purple fl esh cv. NIC-413 had signifi cantly higher phenolic content (2.8 mg GAE 100 g −1 FW) and associated high antioxidant activity. Catechin, gallic, and dihydroxybenzoic acids were found in all cultivars, while chlorogenic acid was present only in purple-fl esh cultivar. Anti-hyperglycemic property relevant α-amylase (74–84%), and α-glucosidase (21–60%) enzyme inhibitory activities were present in all sweet potato cultivars. Additionally, anti-hypertensive property relevant ACE (10–88%) enzyme inhibitory activity were present across all sweet potato cultivars. The results of this in vitro screening study suggested that sweet potato cultivars like NIC-413, Murasaki, Evangeline, and Covington are good dietary source of phenolic antioxidants and can be relevant for anti-hyperglycemic and anti-hypertensive benefi ts to target type 2 diabetes associated health risks.
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