نتایج جستجو برای: Water vapor permeability, Response surface

تعداد نتایج: 2060353  

Journal: :journal of food and bioprocess engineering 0
sara abbasi rad transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran gholamreza askari transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran

the effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. ratio of water t...

Gholamreza Askari, Sara Abbasi Rad

The effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio of water t...

Gholamreza Askari, Sara Abbasi Rad

The effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio of water t...

Gholamreza Askari, Sara Abbasi Rad

The effect of dry material, glycerol and ratio of water to seed in Alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

Journal: :مهندسی بیوسیستم ایران 0
محمد اکرامی کارشناس ارشد گروه علوم و مهندسی صنایع غذایی، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران زهرا امام جمعه استاد گروه علوم و مهندسی صنایع غذایی، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مرضیه میرزاخانی کارشناس ارشد گروه علوم و مهندسی صنایع غذایی، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

in this study the feasibility of using salep as a new film-forming material was studied. the mechanical properties, water vapor permeability and thickness of salep films incorporated with glycerol were determined. increasing the content of dry material of salep from 1% to 3%(w/v) increased values for tensile strength and elongation at break from 16.16% and 18.85 mpa to 70.15% and 24.50 mpa resp...

Objective(s): Due to nanocomposites antimicrobial properties, one of the most extensive usages of nano-products is in packing industry. Thus, the production of packages with nanotechnology can effectively prevent against a variety of microorganisms. In this study, the silicon dioxide nanoparticles the poly (lactic acid) PLA films on antimicrobial and permeability was investigated. Methods...

Mahsa Tabari, Mahya Shafiee Nasab

Objective(s): Since microbial contamination can reduce the shelf life of the foodstuff and there is a potential for the growth of some pathogen microorganisms, films containing antimicrobial agents were produced, which are also biodegradable. In this study, the effect of 1, 3 and 5% nano-zinc oxide on antimicrobial properties and permeability of poly lactic acid film was invest...

Journal: :تحقیقات مهندسی کشاورزی 0
محمد اکرامی دانشجوی کارشناسی ارشد گروه علوم و مهندسی صنایع غذایی پردیس کشاورزی و منابع طبیعی دانشگاه تهران زهرا امام جمعه استاد گروه علوم و مهندسی صنایع غذایی پردیس کشاورزی و منابع طبیعی دانشگاه تهران میلاد محمدی کیا دانشجوی کارشناسی ارشد گروه علوم و مهندسی صنایع غذایی پردیس کشاورزی و منابع طبیعی دانشگاه تهران

new edible composite films formed from salep (orchis mascula) and 10%, 20%, and 30% (w/w) oleic acid were prepared by emulsification with the aim of improving the water vapor barrier and mechanical properties of the film. as oleic acid concentration increased up to 30% (w/w), oxygen permeability (27%), elongation at break (86%) and thickness (2%) of salep films increased significantly and the t...

Journal: :پژوهش های حبوبات ایران 0
امین حسین زاده الناز میلانی امیرحسین الهامی راد محمدحسین حداد خداپرست

legumes are rich sources of protein and consider a good alternative to make a protein films. in this study, central composite design to investigate the simultaneously effect of the grasspea protein isolates (2 - 10 percent), glycerol (0.5 - 7%) and oleic acid (0 - 2%) on properties of edible films made from grasspea protein isolates, such as thickness, density, percentage of solubility in water...

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