مجله علوم و صنایع غذایی ایران

مجله علوم و صنایع غذایی ایران

بررسی ویژگی‌های کلروفیل استخراج شده از ضایعات سبزیجات و رنگ خوراکی پایدار به دست آمده از آن

نوع مقاله : مقاله پژوهشی

نویسندگان
گروه مهندسی علوم و صنایع غذایی، واحد قزوین، دانشگاه آزاد اسلامی، قزوین، ایران
10.48311/fsct.2026.116513.1001
چکیده
امروزه از رنگدانه‌های طبیعی به صورت گسترده‌ای در صنایع غذایی، آرایشی و بهداشتی استفاده می‌گردد و طی سال‌های اخیر تحقیقات متعددی پیرامون روش‌های استخراج و بررسی خواص رنگدانه‌های طبیعی انجام یافته است. هدف از این تحقیق بهینه-سازی استخراج کلروفیل از ضایعات سبزیجات و تولید رنگ خوراکی پایدار از آن با استفاده از خشک‌کن پاششی، انجمادی و هوای داغ بود. بعد از استخراج عصاره از ضایعات سبزیجات، مقدار کلروفیل a و b، مقدار ترکیبات فنلی و فعالیت آنتی اکسیدانی اندازه گیری شد. سپس با سه روش خشک کردن عصاره به پودر تبدیل شد. فعالیت آبی، حلالیت، دانسیته توده، دانسیته ضربه، فعالیت آنتی اکسیدانی، ترکیبات فنولی کل و پارامترهای رنگی برای پودرهای تولید شده بررسی شد. نتایج نشان داد نمونه‌های خشک شده با خشک کن انجمادی مقدار کلروفیل a (mg/g 03/6 ) و b (mg/g 52/8 )، فعالیت آنتی اکسیدانی (% 19/82) و ترکیبات فنولی کل (mgGL/ml 02/347) بالاتری داشتند. خشک کردن انجمادی روی خصوصیات فیزیکی پودر نیز تاثیر داشت. فعالیت آبی، حلالیت، دانسیته توده و دانسیته ضربه نمونه‌های خشک شده با خشک کن انجمادی به صورت معنی دار از نمونه های دیگر بالاتر بود. در بررسی پارامترهای رنگی نمونه‌های خشک شده با خشک‌کن پاششی امتیاز بالاتری کسب کردند. نتایج این تحقیق نشان داد با خشک کردن انجمادی میتوان پودری با خصوصیات فیزیکوشیمیایی مطلوب و مناسب برای کاربرد در مواد غذایی به عنوان رنگدانه تولید کرد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Investigation of the characteristics of chlorophyll extracted from vegetable wastes and its application as a stable natural food colorant

نویسندگان English

Hadi Maddai Barough
akram sharifi
Department of Food Science and Technology, Qa .C., Islamic Azad University, Qazvin, Iran.
چکیده English

Nowadays, natural pigments are widely used in the food, cosmetic, and pharmaceutical industries, and in recent years, numerous studies have been conducted on their extraction methods and functional properties. The aim of this study was to optimize the extraction of chlorophyll from vegetable wastes and to produce a stable food colorant using spray drying, freeze-drying, and hot air-drying methods. After extracting the pigment from vegetable residues, the contents of chlorophyll a and b, total phenolic compounds, and antioxidant activity were determined. The extracts were then converted into powder using the three drying techniques. The produced powders were analyzed for water activity, solubility, bulk density, tapped density, antioxidant activity, total phenolic content, and color parameters. The results showed that freeze-dried samples contained higher amounts of chlorophyll a (6.03 mg/g) and b (8.52 mg/g), antioxidant activity (82.19%), and total phenolic compounds (347.02 mg GA/mL). Freeze-drying also influenced the physical properties of the powders, leading to significantly higher water activity, solubility, bulk density, and tapped density compared to the other methods. In terms of color parameters, spray-dried samples exhibited superior scores. Overall, the findings indicated that freeze-drying can produce powders with desirable physicochemical properties, making them suitable for application as natural food colorants.

کلیدواژه‌ها English

Extraction
Chlorophyll
Vegetable Waste
Spray Dryer
Freeze Dryer
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