Submit Manuscript

American Journal of Food Technology

Year: 2012 | Volume: 7 | Issue: 2 | Page No.: 50-61
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend

Total views 837

Search

Authors

Jace D. Everette

Shahidul Islam

Keywords

Research Article

Effect of Extraction Procedures, Genotypes and Screening Methods to Measure the Antioxidant Potential and Phenolic Content of Orange-fleshed Sweetpotatoes (Ipomoea batatas L.)

Jace D. Everette and Shahidul Islam
The antioxidant activities and phenolic contents of the five orange-fleshed sweetpotato genotypes namely SP-122, SP-129, SP-115, SP-323 and SP-425 in relation to the two extraction methods (hydrophilic and lipophilic fraction) were examined. The antioxidant capacity was investigated with three different screening methods: the 2, 2’-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS), 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and Oxygen Radical Absorbance Capacity (ORAC). It was found that the antioxidant activity of sweetpotato extracts in hydrophilic fraction have a significant antioxidant effect when tested by each method. There was a relationship between total polyphenol content and antioxidant function in case of ABTS (r = 0.59) and ORAC (r = 0.35). The hydrophilic ABTS values correlate significantly with the hydrophilic DPPH values (r = 0.84) and the hydrophilic ORAC values correlate reasonably well with the hydrophilic ABTS values (r = 0.85). In case of the hydrophilic DPPH values and hydrophilic ORAC values also showed a strong correlation (r = 0.87). However, antioxidant activities with the lipophilic extracts were not significantly correlated. Among the sweetpotato genotypes studied, the SP-129 had significantly higher antioxidant activity in ORAC and ABTS methods. In case of DPPH methods, the genotypes SP-425 showed higher activity compared to others studied; however, phenolic content of all genotypes was ranged 3.5-4.8 mg TAE/g dry weight. Among the methods examined, ABTS proved the best for antioxidant determination in orange-fleshed sweetpotatoes followed by ORAC method. The information provided by this research will also facilitate the genetic and chemical breeding study for improvement of the desired quality criteria of orange fleshed sweetpotatoes as well as other produces.
PDF Fulltext XML References Citation

How to cite this article

Jace D. Everette and Shahidul Islam, 2012. Effect of Extraction Procedures, Genotypes and Screening Methods to Measure the Antioxidant Potential and Phenolic Content of Orange-fleshed Sweetpotatoes (Ipomoea batatas L.). American Journal of Food Technology, 7: 50-61.

DOI: 10.3923/ajft.2012.50.61

URL: https://scialert.net/abstract/?doi=ajft.2012.50.61

Related Articles

Effect of Pre-drying, Blanching and Citric Acid Treatments on the Quality of Fried Sweet Potato Chips
Antioxidant Capacities of Various Leaves Extract from Five Colors Varieties of Sweet Potatoes Tubers Using ABTS, DPPH Assays and Correlation with Total Flavonoid, Phenolic, Carotenoid Content
Anti-inflammatory and Antioxidant Activities of a Fraction I1 of Male Inflorescences of Borassus aethiopum Mart (Arecaceae)
Effect of Convective Drying of Myrtus communis on the Yield and Quality of Essential Oils
Influence of Different Extraction Parameters on Antioxidant Properties of Carica papaya Peel and Seed
Antioxidative and Antimutagenic Potentials of Phytochemicals from Ipomoea batatas (L.) Lam.
Effects of Steaming and Dehydration on Anthocyanins, Antioxidant Activity,Total Phenols and Color Characteristics of Purple-Fleshed Sweet Potatoes(Ipomoea batatas)

Leave a Comment

Your email address will not be published. Required fields are marked *