Total phenolic content and antioxidant activity of methanolic extract of selected wild leafy vegetables grown in Bangladesh: A cheapest source of antioxidants.
Mohammad Khairul Alam,Ziaul Hasan Rana,Sheikh Nazrul Islam,Mohammad Akhtaruzzaman +3 more
- Vol. 13, Iss: 1, pp 287-293
TLDR
In this article, methanolic extracts of 10 traditionally consumed wild leafy vegetables of Bangladesh were analyzed for their total phenolic content (TPC) and free radical scavenging activity.Abstract:
Nowadays, more attention has been paid on wild plants as new source of natural antioxidants. Therefore, methanolic extracts of 10 traditionally consumed wild leafy vegetables of Bangladesh were analyzed for their total phenolic content (TPC) and free radical scavenging activity. Folin-Ciocalteu method followed by spectrophotometric measurement was used to quantify the TPC of the selected wild leafy vegetables. Free radical scavenging activity was examined utilizing 1,1-diphenyl-2-picryl-hydrazyl (DPPH) assay. Different concentrations of the plant extract were applied to ascertain the dose response relationship in inhibiting DPPH free radical. The results revealed that the TPC ranged from 102.20 to 710.42 mg GAE/100g dry weight (DW). The highest TPC was observed in Bauhinia acuminata (Shetokanchan) while Leucas aspera (Shetodhron) exhibited the lowest TPC among the undertaken vegetables. The studied samples proportionately inhibited DPPH with increasing concentrations. At high concentration (500 µg.mL-1), the percentage inhibition of DPPH radical by plant extract ranged from 68.1 ±2.65 % to 93.1 ±1.23 %. The highest DPPH radical inhibition was observed in Bauhinia acuminata (Shetokanchan) (93.10 ±1.23 %), followed by Commelina benghalensis (Bat baittashak) (91.97 ±1.31 %), Hydrocotyle sibthorpiodes L. (Sakumubakla) (91.83 ±2.13 %). The lowest DPPH radical inhibition among the studied samples was observed in Leucas aspera (Shetodhron) (68.1 ±2.65 %). IC50 values measured by DPPH assay in this study ranged from 11.64 to 313.79 µg.mL-1. The study findings indicated that the samples under study possesses strong activity against DPPH, and thus could be used as natural antioxidants in the food and/or pharmaceutical industry.read more
Citations
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Journal ArticleDOI
Nutritional Composition, Total Phenolic Content, Antioxidant and α-Amylase Inhibitory Activities of Different Fractions of Selected Wild Edible Plants.
TL;DR: The study findings concluded that the investigated plants were good sources of fiber, protein, mineral, natural antioxidant compounds and α-amylase inhibitors and their increased intake could provide health benefits.
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Comparative assessment of nutritional composition, polyphenol profile, antidiabetic and antioxidative properties of selected edible wild plant species of Bangladesh.
TL;DR: The undertaken plant samples were found to have good amounts of total phenolic, total flavonoid, and antioxidant capacities, documented by DPPH, FRAP, and TEAC assays and exhibited varying spectrum of polyphenols estimated by HPLC.
Journal ArticleDOI
Minerals, vitamin C, and effect of thermal processing on carotenoids composition in nine varieties orange-fleshed sweet potato (Ipomoea batatas L.)
Mohammad Khairul Alam,Samia Sams,Ziaul Hasan Rana,Mohammad Akhtaruzzaman,Sheikh Nazrul Islam +4 more
TL;DR: Being rich in minerals, vitamin C and β-carotene, the studied OFSP varieties could be utilized as a promising source of dietary micronutrients to reduce or prevent the vitamin A malnutrition and other micronUTrient deficiency-related diseases observed in affected populations.
Journal ArticleDOI
Purification Process of Mangiferin from Mangifera indica L. Leaves and Evaluation of Its Bioactivities
Nguyen Thi Truc Loan,Dang Thanh Long,Pham Nguyen Dong Yen,Truong Thi Minh Hanh,Tri Nhut Pham,Dung Thuy Nguyen Pham +5 more
TL;DR: In this paper, a local variety of mango leaves was extracted using ultrasonic assisted extraction methods and ethanol as the extraction solvent, and the crude ethanolic extract of mangiferin was then purified by the liquid-liquid fractionation method with dichloromethane and ethyl acetate, then further separated by HPLC.
Journal ArticleDOI
Profiling of minerals, water soluble vitamins and carotenoid in selected unconventional leafy and non-leafy vegetables of Bangladesh.
Mohammad Khairul Alam,Samia Sams,Mohammad Sharif Khan,Jannatul Azmir,Monira Ahsan,Mohammad Akhtaruzzaman,Sheikh Nazrul Islam +6 more
TL;DR: It can be suggested that regular intake of these vegetables may contribute to daily minerals and vitamins requirement and can combat micronutrient deficiency.
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