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Avicenna Journal of Phytomedicine، جلد ۲، شماره ۲، صفحات ۷۹-۸۵
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عنوان انگلیسی Evaluation of antioxidant activity of three common potato (Solanum tuberosum) cultivars in Iran
چکیده انگلیسی مقاله Objectives: Potato (Solanum tuberosum L.), as a whole food, contains high levels of vitamins and important antioxidants including phenolic acids, carotenoids and flavonoids. The objective of this study was to determine the total phenolic content and antioxidant activities of three common potatoes (Solanum tuberosum) cultivars in Iran i.e., Savalan, Agria and Sante. Materials and Methods: Phenolic compound extraction of samples was done with methanol and total phenolic on the basis of folin-ciocalteu assay was estimated as 16.58 to 36.24 mg GAE/100g dry sample. The antioxidant activities of potato extracts on the basis of inhibition of linoleic acid peroxidation and DPPH assay were compared with a commercially available antioxidant, α -tocopherol. Results: Savalan had the highest phenolic content and the highest DPPH radical scavenging activity with EC50 value of 41.815±mg/ml (DB). Also Savalan had the best inhibitory action against linoleic acid oxidation at 94.10±1.89% at 50 mg/ml sample concentration. Methanolic potato extracts had better antioxidant activity than α-tocopherol. Significant (p< 0.01) negative correlation was observed between total phenolic content and the EC50 for DPPH radical scavenging activity(R=-0.877), but there was no correlation between total phenolic content and total antioxidant activity. Conclusion: Metanolic extracts of three potato cultivars are able to inhibit the oxidation process. The correlation between total phenolic content and DPPH radical scavenging activity indicates that phenolic compounds are responsible for antiradical activity.
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نویسندگان مقاله فریده حسام | faride hesam
faculty of food science, islamic azad university, shahreza branch, isfahan, shahreza, i. r. iran

سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

غلامرضا بلالی | gholam reza balali
department of potato research biotechnology, university of isfahan, i. r. iran

سازمان اصلی تایید شده: دانشگاه اصفهان (Isfahan university)

رضا طاهری تهرانی | reza taheri tehrani
department of potato research biotechnology, university of isfahan, i. r. iran

سازمان اصلی تایید شده: دانشگاه اصفهان (Isfahan university)

نشانی اینترنتی http://ajp.mums.ac.ir/article_36.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Research Article
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