بررسی پروفایل اسیدهای چرب، خواص آنتی اکسیدانی و ترکیبات پلی فنلی برگ ازگیل ژاپنی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد، دپارتمان علوم و صنایع غذایی، واحد علوم دارویی، دانشگاه آزاد اسلامی، تهران، ایران

2 ععضو هیئت علمی، پژوهشکاه استاندارد-پژوهشکده غذایی و کشاورزی، گروه پژوهشی مواد غذایی و کشاورزی، تهران، ایران

3 عضو هیئت علمی، پژوهشکاه استاندارد-پژوهشکده غذایی و کشاورزی، گروه پژوهشی مواد غذایی و کشاورزی، تهران، ایران

چکیده

در این پژوهش، برگ درخت ازگیل ژاپنی از گیلان به منظور تعیین پروفایل اسیدهای چرب، مقدار فنل کل، فلاونوئید کل، تانن کل، فعالیت آنتی اکسیدانی و نوع و مقدار ترکیبات پلی فنلی مورد بررسی و آنالیز قرار گرفت. نتایج نشان داد که بیشترین اسیدهای چرب غیراشباع موجود در برگ ازگیل ژاپنی، به ترتیب، اسید لینولنیک (15/0 ±3/25 درصد)، اولئیک (01/0 ±0/18 درصد) و لینولئیک (15/0 ±7/9 درصد) بود .محتوای فنل کل و تانن کل عصاره برگ ازگیل ژاپنی، به ترتیب، مقدار 55/0 ±45/171، 22/0 ±41/3 میلی‏گرم گالیک اسید بر گرم ماده خشک، محتوای فلاوونوئید86/0 ±40/790 میلی گرم کوئرستین بر گرم ماده خشک و مقدار فعالیت آنتی اکسیدانی با استفاده از آزمون DPPH،10/1 ±11/92 بوده است. با استفاده از دستگاه کروماتوگرافی مایع با کارایی بالا، مشاهده شد که کافئیک اسید بیشترین مقدار ترکیب پلی فنلی شناسایی شده در برگ ازگیل ژاپنی بوده است. برگ ازگیل ژاپنی منبع غنی از امگا 3 است. برگ ازگیل را می‏توان به عنوان منبع غنی از آنتی‏اکسیدان مورد مصرف خوراکی (مانند دمنوش گیاهی) قرار داد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study of Fatty Acids Profile, Antioxidant Activity Properties and Polyphenol Compounds of Loquat Leaf

نویسندگان [English]

  • Zohreh Golmohamadi 1
  • Maryam Jalili 2
  • Ladan Rashidi 3
1 Master of Science, Department of Food and Agriculture, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
2 Faculty Member, Standard Research Institute Department of Food and Agriculture, Research center of food and agriculture, Tehran, Iran
3 Faculty Member,Standard Research Institute Department of Food and Agriculture, Research center of food and agriculture, Tehran, Iran
چکیده [English]

In this study, loquat leaf from Gilan province was analyzed in terms of fatty acids profile, total phenol content, total flavonoids, total tannin, antioxidant activity, type and amount of polyphenol content. Results showed the maximum amounts of unsaturated fatty acids of loquat leaf belonged to linolenic acid (25.3 ± 0.15%), oleic acid (18 ± 0.01%) and linolenic acid (9.7 ± 0.15%), respectively. Total phenol content and total tannin of leaf extract of loquat were, respectively, obtained 171.45 ± 0.55, 3.41 ± 0.22 mg gallic acid/ g dry matter. Total flavonoid content was obtained 790.4 ± 0.86 mg quercetin per g dry matter and antioxidant activity was 92.11 ± 1.10%. According to high-pressure liquid chromatography (HPLC), caffeic acid had the highest amount of polyphenol compound detected in loquat leaf. Loquat leaf can be consumed as a rich source of antioxidant (such as herbal drink). 

کلیدواژه‌ها [English]

  • Loquat
  • Total Flavonoid
  • total phenol
  • Caffeic Acid
  • Linolenic Acid
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