کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7782864 1500566 2018 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An investigation on the effect of polyphenolic extracts of Nigella sativa seedcake on physicochemical properties of chitosan-based films
ترجمه فارسی عنوان
بررسی اثر عصاره های پلی فنولی نشاسته نیکلا سیتوا بر خواص فیزیکی و شیمیایی فیلم های مبتنی بر کیتوزان
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Nigella sativa seedcake phenolic extract (NSE), as compared to tannic acid (TA), was evaluated for its effect on film-forming ability of chitosan. These films were evaluated for their tensile strength, elongation, water vapor permeability (WVP), type of bonding, color, surface morphology, polyphenol and in vitro antioxidant activity release profile. At 7.5% (v/v of film-forming solution), NSE led to 42% decrease in tensile strength but improved the elongation by 66%, contradicting the effect of TA in chitosan films. WVP and crystallinity decreased with increasing NSE concentration. Changes in absorbance intensity by FTIR indicated structural modification. The calorimetric analysis showed changes in melting point and degree of crystallinity due to NSE. The release of total polyphenols and subsequent antioxidant activity in the water, 50% ethanol, and 95% ethanol media indicated potential application in active-packaging. This study shall help valorization of N. sativa seedcake after oil extraction for packaging, pharmaceutical, and allied applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 192, 15 July 2018, Pages 347-355
نویسندگان
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