پتانسیل محافظت نوری عصاره برنج سیاه: پروفایل‌سازی LC-MS/MS و بهینه‌سازی کرم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه فناوری و علوم دارویی، دانشگاه المریسه مدنی، ماکاسار، اندونزی

2 گروه زیست‌شناسی دارویی، دانشگاه المریسه مدنی، ماکاسار، اندونزی

3 گروه فارماکوتراپی، دانشکده پزشکی، دانشگاه پالانگکارایا، پالانگکارایا، اندونزی

چکیده

هدف: هدف از این مطالعه، شناسایی پروفایل فیتوشیمیایی عصاره برنج سیاه (Oryza sativa L.) با استفاده از روش LC-MS/MS، تعیین و ارزیابی فعالیت آنتی‌اکسیدانی و فعالیت محافظت نوری در شرایط in vitro، و فرمولاسیون و بهینه‌سازی یک کرم امولسیون روغن در آب حاوی عصاره برنج سیاه به‌عنوان یک عامل طبیعی محافظت‌کننده در برابر نور بود.
مواد و روش‌ها: دانه‌های برنج سیاه جمع‌آوری‌شده از منطقه نورث توراجا در اندونزی ابتدا با حلال هیدرواتانولی به روش ماسراسیون استخراج شدند و سپس با استفاده از تکنیک LC-MS/MS مورد شناسایی ترکیبات قرار گرفتند. این روش به‌منظور شناسایی ترکیبات اصلی فیتوشیمیایی عصاره به کار گرفته شد. فعالیت آنتی‌اکسیدانی، میزان کل ترکیبات فنولی و فلاونوئیدی، و فعالیت محافظت نوری عصاره در غلظت‌های مختلف با استفاده از روش DPPH و اسپکتروفتومتری UV–Vis ارزیابی گردید. پایه کرم با استفاده از طراحی آماری Simplex Lattice Design و با در نظر گرفتن اسید استئاریک، تری‌اتانول‌آمین (TEA) و گلیسرین به‌عنوان متغیرهای مستقل و با هدف دستیابی به محدوده مناسب pH و ویسکوزیته بهینه‌سازی شد. سپس پایه بهینه با غلظت‌های 5/2، ۵ و ۱۰ درصد عصاره غنی‌سازی شد و کرم‌های حاصل از نظر خواص فیزیکوشیمیایی، پایداری و فاکتور محافظت در برابر آفتاب مورد ارزیابی قرار گرفتند.
نتایج: بازده عصاره خشک برابر با 34/11% به‌دست آمد و میزان کل فنول‌ها و فلاونوئیدها به‌ترتیب 12/2 ± 68/15 میلی‌گرم معادل اسید گالیک بر گرم عصاره (mg GAE/g) و 69/0± 56/24 میلی‌گرم معادل کوئرستین بر گرم عصاره (mg QE/g) بود. عصاره فعالیت آنتی‌اکسیدانی قوی نشان داد و فعالیت محافظت نوری آن به‌صورت وابسته به غلظت افزایش یافت. آنالیز LC-MS/MS وجود ترکیبات پیچیده‌ای شامل پلی‌فنول‌ها و آمین‌ها/آمیدهای لیپوفیل را نشان داد. بر اساس طراحی Simplex Lattice، فرمولاسیونی شامل 10% اسید استئاریک، 3% TEA و 5/13% گلیسرین با pH حدود 1/6 و ویسکوزیته حدود 16000 سانتی‌پواز به‌عنوان فرمولاسیون بهینه شناسایی شد. کرم‌های حاوی 5/2 تا 10% عصاره از نظر pH (5/4 -6/4)، ویسکوزیته، یکنواختی و نوع امولسیون روغن در آب پایدار بودند و SPF آن‌ها تا 1/7 در غلظت 10% عصاره افزایش یافت. همچنین ویژگی‌های ارگانولپتیک قابل قبولی پس از آزمون‌های پایداری حفظ شد.
نتیجه‌گیری: عصاره برنج سیاه دارای فعالیت آنتی‌اکسیدانی و محافظت نوری in vitro قابل توجهی است و افزودن آن به فرمولاسیون کرم روغن در آب موجب بهبود SPF و پایداری فرمولاسیون می‌شود. ترکیب شناسایی فیتوشیمیایی با LC-MS/MS و بهینه‌سازی فرمولاسیون، رویکردی مؤثر برای توسعه محصولات محافظت نوری مبتنی بر برنج سیاه و استفاده از آن به‌عنوان یک ماده فعال چندمنظوره در ضدآفتاب‌های طبیعی فراهم می‌کند.

کلیدواژه‌ها


عنوان مقاله [English]

Photoprotective potential of black rice extract: LC-MS/MS profiling and cream optimization

نویسندگان [English]

  • Nur Khairi 1
  • Khairuddin Khairuddin 2
  • Marwati Marwati 2
  • Indrisari Maulita 3
  • Nisa Michrun 1
  • Nuril Irvani Fitria 2
1 Department of Pharmaceutical and Technology, Universitas Almarisah Madani, Makassar, Indonesia
2 Department of Pharmaceutical Biology, Universitas Almarisah Madani, Makassar, Indonesia
3 Department of Pharmacotherapy Faculty of Medicine, Palangkaraya University, Palangkaraya, Indonesia.
چکیده [English]

Objective
Characterizing the phytochemical profile of black rice (Oryza sativa L.) extract using LC-MS/MS, determining and assessing its antioxidant and in vitro photoprotective activities, and formulating an optimized oil-in-water cream containing the extract as a natural photoprotective agent were the aims of this study.
Materials and methods
The black rice grains of North Toraja, Indonesia, were first macerated with a hydroethanolic solvent and then further characterized using LC-MS/MS. This technology is expected to resolve the major phytochemical constituents of the extract. Antioxidant activity, total phenolic and flavonoid contents, and photoprotective activities were determined using the DPPH spectrophotometry and UV-Vis spectrophotometry, respectively, at various concentrations of the extract. A cream base was optimized using Simplex Lattice Design with stearic acid, triethanolamine (TEA), and glycerin as the independent variables, targeting appropriate ranges of pH and viscosity. The optimized base was then loaded with 2.5, 5, and 10% of the extract and the resulting creams were evaluated for physicochemical properties, stability, and SPF.
Results
The total amount of dry extract yielding 11.34% and total phenolic and flavonoid were 15.68 ± 2.12 mg GAE/g and 24.56 ± 0.69 mg QE/g, respectively. The extract was proven to have strong activity as an antioxidant and exhibited activity in a concentration-dependent manner on photoprotection where the SPF values increased from 6.90 to 15.5 and %Te and %Tp decreased at varying concentrations. A complex composition of extracts obtainable by LC-MS/MS including several polyphenols and lipophilic amines/amides was revealed. From the simplex Lattice Design, in a formulation comprising stearic acid 10%, 3% TEA, and 13.5% glycerin, having pH ≈ 6.1, viscosity ≈ 16,000 cPs were achieved and found to be in good agreement with the model predictions. The formulation of the creams with an extract concentration of 2.5 to 10 % was found to be stable and retained pH 4.5 to 4.6, viscosity, and homogeneity as well as the type of emulsion in O/W in the order of 5.7 SPF to 7.1 at 10% extract for the baseline at 10%, usable organoleptic properties after conducting stability tests.
Conclusion
The antioxidant and in vitro photoprotective activities of Black rice extract and its stability in O/W cream base formulation SPFs was enhanced. The combination of phytochemicals LC-MS/MS and formulation optimization streams the approach for black rice photoprotective products and as a multifunctional active ingredient in natural sunscreen products.

کلیدواژه‌ها [English]

  • antioxidant activity
  • black rice (Oryza sativa L.)
  • cream formulation optimization
  • LC-MS/MS
  • photoprotective activity
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