Articles
Phenolic bioactive-linked antioxidant and anti-hyperglycemic functionalities of blackberry cultivars grown under organic and conventional production practices
Article number
1329_13
Pages
99 – 112
Language
English
Abstract
Blackberries are a rich source of dietary bioactive phenolics with potential human metabolism modulating functionalities.
Therefore, blackberries can be targeted in dietary intervention strategies to potentially counter diet and chronic oxidative stress-linked non-communicable chronic diseases such as early stages of type 2 diabetes (T2D). The aim of this study was to screen and compare food grade relevant cold water extracts of blackberry cultivars Prime-Ark 45 and Prime-Ark Freedom grown over one year under six different production practices, four organic practices (mulch-based weed management + organic fertilizers) and two conventional practices (herbicide + chemical fertilizers). Total soluble phenolic content, phenolic acid profiles, antioxidant activity, α-amylase, and α-glucosidase enzyme inhibitory activities of blackberry extracts were determined using in vitro assay models.
Overall, high soluble phenolic content, high antioxidant activity and high α-amylase and α-glucosidase enzyme inhibitory activities were observed in both blackberry cultivars.
However, blackberry grown under organic weed management and with organic fertilization had higher phenolic-linked antioxidant and anti-hyperglycemic properties. Prime-Ark 45 grown under black fabric and black plastic mulch with feather meal had greater phenolic-linked antioxidant and anti-hyperglycemic properties.
Results suggest that these organic production strategies, especially with Prime-Ark 45 should be advanced in the Northern Plains to potentially improve phenolic content and associated T2D-linked health benefits in blackberry.
Therefore, blackberries can be targeted in dietary intervention strategies to potentially counter diet and chronic oxidative stress-linked non-communicable chronic diseases such as early stages of type 2 diabetes (T2D). The aim of this study was to screen and compare food grade relevant cold water extracts of blackberry cultivars Prime-Ark 45 and Prime-Ark Freedom grown over one year under six different production practices, four organic practices (mulch-based weed management + organic fertilizers) and two conventional practices (herbicide + chemical fertilizers). Total soluble phenolic content, phenolic acid profiles, antioxidant activity, α-amylase, and α-glucosidase enzyme inhibitory activities of blackberry extracts were determined using in vitro assay models.
Overall, high soluble phenolic content, high antioxidant activity and high α-amylase and α-glucosidase enzyme inhibitory activities were observed in both blackberry cultivars.
However, blackberry grown under organic weed management and with organic fertilization had higher phenolic-linked antioxidant and anti-hyperglycemic properties. Prime-Ark 45 grown under black fabric and black plastic mulch with feather meal had greater phenolic-linked antioxidant and anti-hyperglycemic properties.
Results suggest that these organic production strategies, especially with Prime-Ark 45 should be advanced in the Northern Plains to potentially improve phenolic content and associated T2D-linked health benefits in blackberry.
Publication
Authors
A. Espe, K. Shetty, D. Sarkar, H. Hatterman-Valenti
Keywords
α-amylase, α-glucosidase, enzyme inhibition, fruit ripeness, health benefits, oxidative stress, type 2 diabetes
Online Articles (23)