بررسی تاثیر نوع و غلظت مواد دیواره بر خصوصیات نانوکپسول و میکروکپسول‌های روغن ماهی کیلکا با استفاده از صمغ دانه شاهی و زانتان

نویسندگان
دانشگاه علوم کشاورزی و منابع طبیعی ساری
چکیده
روغن ماهی کیلکا به دلیل دارا بودن مقادیر بالای اسیدهای چرب غیر اشباع به میزان زیادی مستعد اکسیداسیون است. یکی از روش­هایی که جهت محافظت روغن­های غیر اشباع از آسیب­های محیطی استفاده می­شود فرآیند ریزپوشانی است. هدف از این پژوهش بررسی تاثیر نوع و غلظت مواد دیواره بر خصوصیات روغن ماهی کیلکا ریزپوشانی شده بود. ترکیب زانتان: صمغ دانه شاهی در نسبت های 100:0، 50:50 و 0:100 به عنوان فاز پیوسته امولسیون استفاده شد. غلظت مواد جامد در محلول تشکیل دهنده پوشش کپسول 30، 40 و 50 درصد انتخاب شد. برای تولید نانوامولسیون از دستگاه هموژنایزر اولتراتوراکس و برای تولید میکروامولسیون از دستگاه هموژنایزر با فشار بالا استفاده شد. نتایج نشان داد کپسول های تهیه شده با پوشش ترکیبی در همه غلظت ها، کپسول با دیواره زانتان در غلظت 40 و 50 درصد و کپسول با دیواره صمغ شاهی در غلظت 30 درصد اندازه نانو (زیر 100 نانومتر) داشتند. میکروکپسول ها اندازه زیر 10 میکرومتر داشتند. پتانسیل زتا برای میکروکپسول ها و نانوکپسول های بدست آمده منفی بود و کمترین و بیشترین پتانسیل زتا به ترتیب مربوط به کپسول های با دیواره ترکیبی و کپسول های با دیواره صمغ شاهی بود. نانوکپسول ها نسبت به میکروکپسول ها راندمان بالاتری در ریزپوشانی روغن ماهی کیلکا نشان دادند. نتایج این تحقیق استفاده از میکروکپسول روغن ماهی با غلظت دیواره 40% صمغ شاهی، نانو کپسول روغن ماهی با غلظت دیواره 40% صمغ دانه شاهی:زانتان و نانو کپسول روغن ماهی با غلظت دیواره 30% صمغ زانتان را به علت خصوصیات مناسب جهت نگهداری روغن توصیه می نماید.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Effect of Type and Concentration of Wall Materials on Kilka Fish Oil Nano and Microcapsules Properties Using Xanthan and Lepidium Sativum Seeds gum

نویسندگان English

sara maghsoudi
reza esmaeilzadeh kenari
reza farahmandfar
sari agricultural sciences and natural resources university
چکیده English

Kilka fish oil is highly susceptible to oxidation due to high amounts of unsaturated fatty acids. One of the methods used to protect unsaturated oils from environmental damage is the encapsulation process. The purpose of this study was to investigate the effect of encapsulation process on reduction of Kilka fish oil oxidation. The purpose of this study was to investigate the effect of type and concentration of wall materials on encapsulated fish oil properties. The mixture of xanthan and lepidium sativum (Shahi) seed gum was used in 100: 0, 50:50 and 0: 100 ratios as the continuous phase of emulsion. Concentration of solid material in wall solution was chosen at 30, 40 and 50%. A homogenizer ultraturax was used to prepare nanomulsions and a high pressure homogenizer was used to produce microemulsion. The results showed that the size of the capsules prepared with mixture wall in all concentration, xanthan gum at 40 and 50% concentration and capsules with shahi seed gum at 30% concentration was in the range of nano (below 100 nm). All microcapsules had a size below 10 micrometers. Zeta potential was negative for microcapsules and nanocapsules and the lowest and highest zeta potentials were related to capsule with mixture and shahi seed gum walls respectively. The nanocapsules showed higher efficiency of Kilka fish oil encapsulation than microcapsules. The images of the Scanning Electron Microscope represent a suitable network and uniform wall cover around the capsules, and structural fractures were not observed. The results of this study suggest using of fish oil microcapsules with shahi gum wall at 40% concentration, fish oil nanocapsules with mixture of xanthan and shahi gum wall at 40% concentration, and fish oil nanocapsules with 30% xanthan gum due to good properties for oil storage.

کلیدواژه‌ها English

kilka fish oil
Xanthan
Lepidium sativum seed gum
nanocapsule
microcapsule
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